ast_to_hir.cpp revision b66be7518ad57368b31b5d70a2bb4c0fe66aa988
1a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick/* 2a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Copyright © 2010 Intel Corporation 3a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 4a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Permission is hereby granted, free of charge, to any person obtaining a 5a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * copy of this software and associated documentation files (the "Software"), 6a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to deal in the Software without restriction, including without limitation 7a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * and/or sell copies of the Software, and to permit persons to whom the 9a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Software is furnished to do so, subject to the following conditions: 10a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 11a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * The above copyright notice and this permission notice (including the next 12a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * paragraph) shall be included in all copies or substantial portions of the 13a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Software. 14a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 15a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 21a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * DEALINGS IN THE SOFTWARE. 22a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 24a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick/** 25a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * \file ast_to_hir.c 26a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Convert abstract syntax to to high-level intermediate reprensentation (HIR). 27a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 28a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * During the conversion to HIR, the majority of the symantic checking is 29a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * preformed on the program. This includes: 30a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 31a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * Symbol table management 32a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * Type checking 33a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * Function binding 34a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 35a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * The majority of this work could be done during parsing, and the parser could 36a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * probably generate HIR directly. However, this results in frequent changes 37a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to the parser code. Since we do not assume that every system this complier 38a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * is built on will have Flex and Bison installed, we have to store the code 39a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * generated by these tools in our version control system. In other parts of 40a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the system we've seen problems where a parser was changed but the generated 41a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * code was not committed, merge conflicts where created because two developers 42a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * had slightly different versions of Bison installed, etc. 43a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 44a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * I have also noticed that running Bison generated parsers in GDB is very 45a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * irritating. When you get a segfault on '$$ = $1->foo', you can't very 46a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * well 'print $1' in GDB. 47a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 48a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * As a result, my preference is to put as little C code as possible in the 49a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * parser (and lexer) sources. 50a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 51ac95f2f8c88d39aaa878f61172d9748af13e2c80Eric Anholt 52bfd7c9ac228c7ed8aec04c3b3aa33f40ee00b035Chia-I Wu#include "main/core.h" /* for struct gl_extensions */ 538bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick#include "glsl_symbol_table.h" 54a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "glsl_parser_extras.h" 55a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "ast.h" 56a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "glsl_types.h" 57a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "ir.h" 58a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 59d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanickvoid 60d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) 61d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick{ 62adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick _mesa_glsl_initialize_variables(instructions, state); 6381168351a7f493fcde55e621af046c9301aa93e9Kenneth Graunke _mesa_glsl_initialize_functions(state); 64adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick 65814c89abdbcd5b841b98746af921796df0362238Kenneth Graunke state->symbols->language_version = state->language_version; 66814c89abdbcd5b841b98746af921796df0362238Kenneth Graunke 6741ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 6841ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 69a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke /* Section 4.2 of the GLSL 1.20 specification states: 70a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * "The built-in functions are scoped in a scope outside the global scope 71a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * users declare global variables in. That is, a shader's global scope, 72a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * available for user-defined functions and global variables, is nested 73a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * inside the scope containing the built-in functions." 74a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * 75a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * Since built-in functions like ftransform() access built-in variables, 76a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * it follows that those must be in the outer scope as well. 77a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * 78a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * We push scope here to create this nesting effect...but don't pop. 79a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * This way, a shader's globals are still in the symbol table for use 80a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * by the linker. 81a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke */ 82a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke state->symbols->push_scope(); 83a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke 842b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, & state->translation_unit) 85304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 86d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick} 87d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 88d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 890104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick/** 900104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is available, convert one operand to a different type 910104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 920104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * The \c from \c ir_rvalue is converted "in place". 930104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 940104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param to Type that the operand it to be converted to 950104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param from Operand that is being converted 960104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param state GLSL compiler state 970104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 980104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \return 990104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is possible (or unnecessary), \c true is returned. 1000104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * Otherwise \c false is returned. 1010104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 102f32d3df8ab2b7c6c746f46870edc4b284cea50caKenneth Graunkebool 103bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickapply_implicit_conversion(const glsl_type *to, ir_rvalue * &from, 1040104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick struct _mesa_glsl_parse_state *state) 1050104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick{ 106953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 107bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (to->base_type == from->type->base_type) 1080104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 1090104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1100104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* This conversion was added in GLSL 1.20. If the compilation mode is 1110104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * GLSL 1.10, the conversion is skipped. 1120104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 1130104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (state->language_version < 120) 1140104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 1150104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1160104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* From page 27 (page 33 of the PDF) of the GLSL 1.50 spec: 1170104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 1180104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * "There are no implicit array or structure conversions. For 1190104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * example, an array of int cannot be implicitly converted to an 1200104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * array of float. There are no implicit conversions between 1210104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * signed and unsigned integers." 1220104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 1230104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* FINISHME: The above comment is partially a lie. There is int/uint 1240104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * FINISHME: conversion for immediate constants. 1250104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 126bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (!to->is_float() || !from->type->is_numeric()) 1270104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 1280104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 129506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke /* Convert to a floating point type with the same number of components 130506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke * as the original type - i.e. int to float, not int to vec4. 131506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke */ 132506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke to = glsl_type::get_instance(GLSL_TYPE_FLOAT, from->type->vector_elements, 133506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke from->type->matrix_columns); 134506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke 135bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick switch (from->type->base_type) { 1360104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_INT: 1371660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_i2f, to, from, NULL); 1380104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1390104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_UINT: 1401660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_u2f, to, from, NULL); 1410104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1420104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_BOOL: 1431660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_b2f, to, from, NULL); 144dc58b3f8ccd817fdee390a3df5b8e0fb29d5397cEric Anholt break; 1450104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick default: 1460104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick assert(0); 1470104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick } 1480104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1490104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 1500104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick} 1510104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1520104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 153a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 154bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickarithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 155a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool multiply, 156a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 157a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 158336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 159336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 1600104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 161a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 162a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 163a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic binary operators add (+), subtract (-), 164a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * multiply (*), and divide (/) operate on integer and 165a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * floating-point scalars, vectors, and matrices." 166a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16760b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick if (!type_a->is_numeric() || !type_b->is_numeric()) { 168a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 169a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Operands to arithmetic operators must be numeric"); 1700471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 171a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 172a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 173a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 174a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If one operand is floating-point based and the other is 175a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * not, then the conversions from Section 4.1.10 "Implicit 176a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Conversions" are applied to the non-floating-point-based operand." 177a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1780104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 1790104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 180a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 181a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Could not implicitly convert operands to " 182a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "arithmetic operator"); 1830104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return glsl_type::error_type; 184a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 185336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 186336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 187336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 188a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If the operands are integer types, they must both be signed or 189a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both be unsigned." 190a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 191a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * From this rule and the preceeding conversion it can be inferred that 192a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT. 19360b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * The is_numeric check above already filtered out the case where either 19460b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * type is not one of these, so now the base types need only be tested for 19560b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * equality. 196a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 197a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_a->base_type != type_b->base_type) { 198a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 199a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "base type mismatch for arithmetic operator"); 2000471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 202a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 203a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All arithmetic binary operators result in the same fundamental type 204a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (signed integer, unsigned integer, or floating-point) as the 205a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands they operate on, after operand type conversion. After 206a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * conversion, the following cases are valid 207a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The two operands are scalars. In this case the operation is 209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * applied, resulting in a scalar." 210a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 211cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar() && type_b->is_scalar()) 212a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 213a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 214a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* One operand is a scalar, and the other is a vector or matrix. 215a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case, the scalar operation is applied independently to each 216a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component of the vector or matrix, resulting in the same size 217a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector or matrix." 218a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 219cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar()) { 220cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (!type_b->is_scalar()) 221a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 222cb36f8aaeeb09660843316270a781948f773d90bIan Romanick } else if (type_b->is_scalar()) { 223a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 224a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 225a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 226a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 227a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been 228a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * handled. 229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23060b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_a->is_scalar()); 23160b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_b->is_scalar()); 232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 233a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The two operands are vectors of the same size. In this case, the 234a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operation is done component-wise resulting in the same size 235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector." 236a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 237a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector() && type_b->is_vector()) { 238a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) { 239a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 240a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } else { 241a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 242a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "vector size mismatch for arithmetic operator"); 243a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 244a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } 245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and 249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <vector, vector> have been handled. At least one of the operands must 250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * be matrix. Further, since there are no integer matrix types, the base 251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * type of both operands must be float. 252a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 25360b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(type_a->is_matrix() || type_b->is_matrix()); 254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_a->base_type == GLSL_TYPE_FLOAT); 255a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_b->base_type == GLSL_TYPE_FLOAT); 256a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 257a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The operator is add (+), subtract (-), or divide (/), and the 258a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands are matrices with the same number of rows and the same 259a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * number of columns. In this case, the operation is done component- 260a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise resulting in the same size matrix." 261a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The operator is multiply (*), where both operands are matrices or 262a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * one operand is a vector and the other a matrix. A right vector 263a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand is treated as a column vector and a left vector operand as a 264a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * row vector. In all these cases, it is required that the number of 265a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * columns of the left operand is equal to the number of rows of the 266a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * right operand. Then, the multiply (*) operation does a linear 267a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * algebraic multiply, yielding an object that has the same number of 268a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * rows as the left operand and the same number of columns as the right 269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand. Section 5.10 "Vector and Matrix Operations" explains in 270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * more detail how vectors and matrices are operated on." 271a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 272a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (! multiply) { 273a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) 274a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 275a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 276fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick if (type_a->is_matrix() && type_b->is_matrix()) { 277c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* Matrix multiply. The columns of A must match the rows of B. Given 278c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the other previously tested constraints, this means the vector type 279c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of a row from A must be the same as the vector type of a column from 280c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 281c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 282c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b->column_type()) { 283c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* The resulting matrix has the number of columns of matrix B and 284c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the number of rows of matrix A. We get the row count of A by 285c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * looking at the size of a vector that makes up a column. The 286c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * transpose (size of a row) is done for B. 287c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 288a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt const glsl_type *const type = 289c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick glsl_type::get_instance(type_a->base_type, 290c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_a->column_type()->vector_elements, 291c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_b->row_type()->vector_elements); 292a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt assert(type != glsl_type::error_type); 293a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 294a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type; 295a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 296fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick } else if (type_a->is_matrix()) { 297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* A is a matrix and B is a column vector. Columns of A must match 298c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * rows of B. Given the other previously tested constraints, this 299c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * means the vector type of a row from A must be the same as the 300c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * vector the type of B. 301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 30247c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth if (type_a->row_type() == type_b) { 30347c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth /* The resulting vector has a number of elements equal to 30447c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth * the number of rows of matrix A. */ 30547c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth const glsl_type *const type = 30647c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth glsl_type::get_instance(type_a->base_type, 30747c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth type_a->column_type()->vector_elements, 30847c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 1); 30947c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth assert(type != glsl_type::error_type); 31047c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 31147c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth return type; 31247c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth } 313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 314fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick assert(type_b->is_matrix()); 315a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 316c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* A is a row vector and B is a matrix. Columns of A must match rows 317c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of B. Given the other previously tested constraints, this means 318c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the type of A must be the same as the vector type of a column from 319c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 32147c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth if (type_a == type_b->column_type()) { 32247c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth /* The resulting vector has a number of elements equal to 32347c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth * the number of columns of matrix B. */ 32447c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth const glsl_type *const type = 32547c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth glsl_type::get_instance(type_a->base_type, 32647c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth type_b->row_type()->vector_elements, 32747c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 1); 32847c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth assert(type != glsl_type::error_type); 32947c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 33047c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth return type; 33147c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth } 332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 333a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 334a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); 335a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All other cases are illegal." 340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 341a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3420471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 343a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 34765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholtunary_arithmetic_result_type(const struct glsl_type *type, 34865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 57: 351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic unary operators negate (-), post- and pre-increment 353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * and decrement (-- and ++) operate on integer or floating-point 354a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * values (including vectors and matrices). All unary operators work 355a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component-wise on their operands. These result with the same type 356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * they operated on." 357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 35865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (!type->is_numeric()) { 35965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 36065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to arithmetic operators must be numeric"); 3610471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 36265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 364a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 365a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 367cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace/** 368cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * \brief Return the result type of a bit-logic operation. 369cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * 370cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * If the given types to the bit-logic operator are invalid, return 371cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * glsl_type::error_type. 372cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * 373cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * \param type_a Type of LHS of bit-logic op 374cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * \param type_b Type of RHS of bit-logic op 375cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace */ 376cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versacestatic const struct glsl_type * 377cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versacebit_logic_result_type(const struct glsl_type *type_a, 378cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace const struct glsl_type *type_b, 379cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace ast_operators op, 380cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 381cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace{ 382cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (state->language_version < 130) { 383cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30"); 384cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return glsl_type::error_type; 385cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace } 386cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace 387cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace /* From page 50 (page 56 of PDF) of GLSL 1.30 spec: 388cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * 389cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * "The bitwise operators and (&), exclusive-or (^), and inclusive-or 390cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * (|). The operands must be of type signed or unsigned integers or 391cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * integer vectors." 392cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace */ 393cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (!type_a->is_integer()) { 394cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace _mesa_glsl_error(loc, state, "LHS of `%s' must be an integer", 395cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace ast_expression::operator_string(op)); 396cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return glsl_type::error_type; 397cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace } 398cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (!type_b->is_integer()) { 399cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace _mesa_glsl_error(loc, state, "RHS of `%s' must be an integer", 400cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace ast_expression::operator_string(op)); 401cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return glsl_type::error_type; 402cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace } 403cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace 404cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace /* "The fundamental types of the operands (signed or unsigned) must 405cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * match," 406cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace */ 407cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (type_a->base_type != type_b->base_type) { 408cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace _mesa_glsl_error(loc, state, "operands of `%s' must have the same " 409cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace "base type", ast_expression::operator_string(op)); 410cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return glsl_type::error_type; 411cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace } 412cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace 413cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace /* "The operands cannot be vectors of differing size." */ 414cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (type_a->is_vector() && 415cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace type_b->is_vector() && 416cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace type_a->vector_elements != type_b->vector_elements) { 417cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace _mesa_glsl_error(loc, state, "operands of `%s' cannot be vectors of " 418cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace "different sizes", ast_expression::operator_string(op)); 419cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return glsl_type::error_type; 420cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace } 421cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace 422cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace /* "If one operand is a scalar and the other a vector, the scalar is 423cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * applied component-wise to the vector, resulting in the same type as 424cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * the vector. The fundamental types of the operands [...] will be the 425cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace * resulting fundamental type." 426cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace */ 427cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace if (type_a->is_scalar()) 428cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return type_b; 429cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace else 430cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace return type_a; 431cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace} 432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 433a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 434a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickmodulus_result_type(const struct glsl_type *type_a, 43565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt const struct glsl_type *type_b, 43665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 437a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 438a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 439a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The operator modulus (%) operates on signed or unsigned integers or 440a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * integer vectors. The operand types must both be signed or both be 441a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * unsigned." 442a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 44340176e249f72b6090204611873b19aed3da67c71Ian Romanick if (!type_a->is_integer() || !type_b->is_integer() 444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->base_type != type_b->base_type)) { 44565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 4460471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 447a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operands cannot be vectors of differing size. If one operand is 450a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * a scalar and the other vector, then the scalar is applied component- 451a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise to the vector, resulting in the same type as the vector. If both 452a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * are vectors of the same size, the result is computed component-wise." 453a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 454a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector()) { 455a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (!type_b->is_vector() 456a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->vector_elements == type_b->vector_elements)) 457a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 458a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else 459a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 460a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 461a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operator modulus (%) is not defined for any other data types 462a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (non-integer types)." 463a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 46465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 4650471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 466a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 467a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 468a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 469a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 470bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickrelational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 47165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 472a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 473336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 474336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 4750150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick 476a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 477a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The relational operators greater than (>), less than (<), greater 478a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * than or equal (>=), and less than or equal (<=) operate only on 479a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * scalar integer and scalar floating-point expressions." 480a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 481a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick if (!type_a->is_numeric() 482a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick || !type_b->is_numeric() 483cb36f8aaeeb09660843316270a781948f773d90bIan Romanick || !type_a->is_scalar() 48465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt || !type_b->is_scalar()) { 48565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 48665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to relational operators must be scalar and " 48765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "numeric"); 4880471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 48965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 490a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 491a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "Either the operands' types must match, or the conversions from 492a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Section 4.1.10 "Implicit Conversions" will be applied to the integer 493a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand, after which the types must match." 494a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4950150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 4960150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 49765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 49865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Could not implicitly convert operands to " 49965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "relational operator"); 5000150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick return glsl_type::error_type; 501a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 502336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 503336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 504a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 50565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (type_a->base_type != type_b->base_type) { 50665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "base type mismatch"); 5070471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 50865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 509a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 510a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The result is scalar Boolean." 511a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 5120471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::bool_type; 513a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 514a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 515c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace/** 516c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * \brief Return the result type of a bit-shift operation. 517c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * 518c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * If the given types to the bit-shift operator are invalid, return 519c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * glsl_type::error_type. 520c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * 521c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * \param type_a Type of LHS of bit-shift op 522c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * \param type_b Type of RHS of bit-shift op 523c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace */ 524c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versacestatic const struct glsl_type * 525c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versaceshift_result_type(const struct glsl_type *type_a, 526c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace const struct glsl_type *type_b, 527c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace ast_operators op, 528c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 529c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace{ 530c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace if (state->language_version < 130) { 531c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30"); 532c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return glsl_type::error_type; 533c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace } 534c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace 535c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace /* From page 50 (page 56 of the PDF) of the GLSL 1.30 spec: 536c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * 537c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * "The shift operators (<<) and (>>). For both operators, the operands 538c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * must be signed or unsigned integers or integer vectors. One operand 539c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * can be signed while the other is unsigned." 540c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace */ 541c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace if (!type_a->is_integer()) { 542c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace _mesa_glsl_error(loc, state, "LHS of operator %s must be an integer or " 543c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace "integer vector", ast_expression::operator_string(op)); 544c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return glsl_type::error_type; 545c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace 546c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace } 547c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace if (!type_b->is_integer()) { 548c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace _mesa_glsl_error(loc, state, "RHS of operator %s must be an integer or " 549c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace "integer vector", ast_expression::operator_string(op)); 550c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return glsl_type::error_type; 551c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace } 552c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace 553c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace /* "If the first operand is a scalar, the second operand has to be 554c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * a scalar as well." 555c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace */ 556c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace if (type_a->is_scalar() && !type_b->is_scalar()) { 557c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace _mesa_glsl_error(loc, state, "If the first operand of %s is scalar, the " 558c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace "second must be scalar as well", 559c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace ast_expression::operator_string(op)); 560c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return glsl_type::error_type; 561c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace } 562c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace 563c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace /* If both operands are vectors, check that they have same number of 564c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * elements. 565c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace */ 566c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace if (type_a->is_vector() && 567c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace type_b->is_vector() && 568c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace type_a->vector_elements != type_b->vector_elements) { 569c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace _mesa_glsl_error(loc, state, "Vector operands to operator %s must " 570c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace "have same number of elements", 571c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace ast_expression::operator_string(op)); 572c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return glsl_type::error_type; 573c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace } 574c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace 575c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace /* "In all cases, the resulting type will be the same type as the left 576c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace * operand." 577c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace */ 578c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace return type_a; 579c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace} 580a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 5810bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick/** 5820bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that a value can be assigned to a location with a specified type 5830bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 5840bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that \c rhs can be assigned to some location. If the types are 5850bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * not an exact match but an automatic conversion is possible, \c rhs will be 5860bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * converted. 5870bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 5880bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \return 5890bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. 5900bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Otherwise the actual RHS to be assigned will be returned. This may be 5910bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c rhs, or it may be \c rhs after some type conversion. 5920bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 5930bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \note 5940bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * In addition to being used for assignments, this function is used to 5950bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * type-check return values. 5960bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 597fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 598336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholtvalidate_assignment(struct _mesa_glsl_parse_state *state, 599336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *lhs_type, ir_rvalue *rhs) 6000bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick{ 6010bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If there is already some error in the RHS, just return it. Anything 6020bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * else will lead to an avalanche of error message back to the user. 6030bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 604ec53010c4d02e11171d3c782a41b70cad76788e8Ian Romanick if (rhs->type->is_error()) 6050bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 6060bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 6070bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If the types are identical, the assignment can trivially proceed. 6080bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 609ec53010c4d02e11171d3c782a41b70cad76788e8Ian Romanick if (rhs->type == lhs_type) 6100bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 6110bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 6120157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the array element types are the same and the size of the LHS is zero, 6130157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the assignment is okay. 6140157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * 6150157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * Note: Whole-array assignments are not permitted in GLSL 1.10, but this 6160157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is handled by ir_dereference::is_lvalue. 6170157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 6180157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs_type->is_array() && rhs->type->is_array() 6190157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->element_type() == rhs->type->element_type()) 6200157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->array_size() == 0)) { 6210157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick return rhs; 6220157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 6230157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 624336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt /* Check for implicit conversion in GLSL 1.20 */ 625336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (apply_implicit_conversion(lhs_type, rhs, state)) { 626ec53010c4d02e11171d3c782a41b70cad76788e8Ian Romanick if (rhs->type == lhs_type) 627336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt return rhs; 628336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt } 629336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 6300bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return NULL; 6310bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick} 6320bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 63310a685218610e737e23d2d8a243ed6ff6613becdEric Anholtir_rvalue * 63410a685218610e737e23d2d8a243ed6ff6613becdEric Anholtdo_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, 63510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_rvalue *lhs, ir_rvalue *rhs, 63610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt YYLTYPE lhs_loc) 63710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt{ 638953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 63910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); 64010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 64110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!error_emitted) { 642b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace if (lhs->variable_referenced() != NULL 643b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace && lhs->variable_referenced()->read_only) { 644b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace _mesa_glsl_error(&lhs_loc, state, 645b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace "assignment to read-only variable '%s'", 646b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace lhs->variable_referenced()->name); 647b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace error_emitted = true; 648b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace 649b66be7518ad57368b31b5d70a2bb4c0fe66aa988Chad Versace } else if (!lhs->is_lvalue()) { 65010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 65110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 65210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 65310eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke 65410eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke if (state->es_shader && lhs->type->is_array()) { 65510eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke _mesa_glsl_error(&lhs_loc, state, "whole array assignment is not " 65610eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke "allowed in GLSL ES 1.00."); 65710eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke error_emitted = true; 65810eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke } 65910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 66010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 661336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 66210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 66310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 66410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 66510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 6660157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6670157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 6680157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 6690157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 6700157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 6710157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 6720157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 6730157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 6740157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6750157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 6760157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 67736ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 6780157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6790157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 6800157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 68163f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 68263f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 68363f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 68463f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 68563f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 68663f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 68763f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 688f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 6890157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 6909703ed05e684f4269cd8af27c94e9b6bf8781d85Eric Anholt d->type = var->type; 6910157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 69210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 69310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 6942731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 6952731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 6962731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 6972731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 6982731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 6992731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 7002731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 7012731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 7022731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 7032731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 7047e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", 7057e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 706e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); 707ae805922b7e3cdaf3aee26c3b799fe3608669bbaEric Anholt instructions->push_tail(var); 708e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt instructions->push_tail(new(ctx) ir_assignment(deref_var, 7091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth rhs, 7101660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 711e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var = new(ctx) ir_dereference_variable(var); 7122731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt 7138e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick if (!error_emitted) 7148e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); 71510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 7161660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 71710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 7180bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 719de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 720959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 721de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 7221660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 723de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 724de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7257e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", 7267e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 72743b5b03d67ce890e867c81d4a5cfc4871d711d43Eric Anholt instructions->push_tail(var); 728de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 729de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), 7311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth lvalue, NULL)); 732de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 733de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 734de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 735de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 736de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 737de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 739de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 740de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 741de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 742fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 7430044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 74418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 74518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 74618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 74718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 74818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 74918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 75018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 75118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 752b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholtstatic void 753b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholtmark_whole_array_access(ir_rvalue *access) 754b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt{ 755b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt ir_dereference_variable *deref = access->as_dereference_variable(); 756b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 757b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt if (deref) { 758b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt deref->var->max_array_access = deref->type->length - 1; 759b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt } 760b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt} 761b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 762ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholtstatic ir_rvalue * 763ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholtdo_comparison(void *mem_ctx, int operation, ir_rvalue *op0, ir_rvalue *op1) 764ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt{ 765ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt int join_op; 7666d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick ir_rvalue *cmp = NULL; 767ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 768ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt if (operation == ir_binop_all_equal) 769ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt join_op = ir_binop_logic_and; 770ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt else 771ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt join_op = ir_binop_logic_or; 772ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 773ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt switch (op0->type->base_type) { 774ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_FLOAT: 775ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_UINT: 776ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_INT: 777ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_BOOL: 778ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt return new(mem_ctx) ir_expression(operation, op0, op1); 779ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 780ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_ARRAY: { 781ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt for (unsigned int i = 0; i < op0->type->length; i++) { 782ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt ir_rvalue *e0, *e1, *result; 783ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 784ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e0 = new(mem_ctx) ir_dereference_array(op0->clone(mem_ctx, NULL), 785ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt new(mem_ctx) ir_constant(i)); 786ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e1 = new(mem_ctx) ir_dereference_array(op1->clone(mem_ctx, NULL), 787ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt new(mem_ctx) ir_constant(i)); 788ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(mem_ctx, operation, e0, e1); 789ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 7906d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp) { 7916d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_expression(join_op, cmp, result); 792ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } else { 7936d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = result; 794ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 795ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 796b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 797b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt mark_whole_array_access(op0); 798b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt mark_whole_array_access(op1); 7996d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 800ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 801ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 802ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_STRUCT: { 803ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt for (unsigned int i = 0; i < op0->type->length; i++) { 804ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt ir_rvalue *e0, *e1, *result; 805ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt const char *field_name = op0->type->fields.structure[i].name; 806ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 807ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e0 = new(mem_ctx) ir_dereference_record(op0->clone(mem_ctx, NULL), 808ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt field_name); 809ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e1 = new(mem_ctx) ir_dereference_record(op1->clone(mem_ctx, NULL), 810ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt field_name); 811ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(mem_ctx, operation, e0, e1); 812ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 8136d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp) { 8146d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_expression(join_op, cmp, result); 815ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } else { 8166d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = result; 817ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 818ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 8196d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 820ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 821ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 822ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_ERROR: 823ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_VOID: 824ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_SAMPLER: 825ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt /* I assume a comparison of a struct containing a sampler just 826ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt * ignores the sampler present in the type. 827ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt */ 8286d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 8296d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick 8306d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick default: 8316d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick assert(!"Should not get here."); 8326d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 833ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 834d56c97413ee65e40e3544b89ffca450df9ba1c06Eric Anholt 8356d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp == NULL) 8366d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_constant(true); 8376d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick 8386d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick return cmp; 839ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt} 84018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 841fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 8420044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 84318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 844a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 845953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 846a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 847a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 848a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 849a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 850a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 851a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 852a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 853a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 854a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 855a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 856a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 857a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 858a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 859a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 8614dfb89904c0a3d2166e9a3fc0253a254680e91bcLuca Barbieri ir_binop_all_equal, 8624dfb89904c0a3d2166e9a3fc0253a254680e91bcLuca Barbieri ir_binop_any_nequal, 863a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 864a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 865a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 866a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 867a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 868a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 869a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 870a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 871a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 872a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 873a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 874a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 875a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 876a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 877a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 878a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 879a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 880a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 881a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 882a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 883a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 884a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 885a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 886a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 887de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 888de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 889de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 890de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 891a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 892a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 893a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 894a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 895a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 896a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 897a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 898a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 899a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 900a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 901fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 9021c325af4d6b907e0a47ab7f868a2a78f054f153fAras Pranckevicius ir_rvalue *op[3]; 9030471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 904a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 905a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 906a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 90718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 908a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 90918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 9106652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 91118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 91218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 913a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 91410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 91510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 91610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 91710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 918a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 9196652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 920a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 921a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 92218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 923a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 924c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth type = unary_arithmetic_result_type(op[0]->type, state, & loc); 925c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth 926c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth error_emitted = type->is_error(); 927a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 928a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 929a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 930a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 931a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 93218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 933a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 93465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 935a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 93665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 937a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9391660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 940a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 941a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 942a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 943a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 944a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 945a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 94618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 94718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 948a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 949bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 95018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 951a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 952a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 953a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9541660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9551660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 957a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 95918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 96018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 961a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 96265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 963a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 96418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 965a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9661660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9671660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 96865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 969a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 970a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 971a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 9735c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace if (state->language_version < 130) { 9745c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace _mesa_glsl_error(&loc, state, "operator %s requires GLSL 1.30", 9755c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace operator_string(this->oper)); 9765c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace error_emitted = true; 9775c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace } 9785c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace 9795c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 9805c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 981c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, 982c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace &loc); 9835c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace result = new(ctx) ir_expression(operations[this->oper], type, 9845c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[0], op[1]); 9855c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 9865c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace break; 987a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 988a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 989a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 990a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 991a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 99218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 99318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 994a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 99565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 997a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 998a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 999a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1000a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 1001a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 1002cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 1003a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 10041660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 10051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 100665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 1007a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1008a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1009a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 1010a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 10116e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 10126e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 10136e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 10146e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 10156e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 10166e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 10176e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 10186e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 10196e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 10206e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 10216e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 10226e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 1023bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 1024bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 1025212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 10266e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 10276e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 10286e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 1029a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 1030a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 1031a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 1032a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 1033a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 10346e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 10356e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 1036ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(ctx, operations[this->oper], op[0], op[1]); 10376e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 10386e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 10396d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick assert(error_emitted || (result->type == glsl_type::bool_type)); 1040a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1041a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1042a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 1043a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 1044a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 10451eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 10461eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[1] = this->subexpressions[1]->hir(instructions, state); 1047cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, 1048cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace state, &loc); 10491eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(operations[this->oper], type, 10501eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0], op[1]); 10511eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 10521eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke break; 10531eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 1054a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 10551eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 10561eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10571eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (state->language_version < 130) { 10581eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30"); 10591eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 10601eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 10611eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10621eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (!op[0]->type->is_integer()) { 10631eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "operand of `~' must be an integer"); 10641eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 10651eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 10661eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10671eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke type = op[0]->type; 10681eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(ir_unop_bit_not, type, op[0], NULL); 1069a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1070a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 10714950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 1072b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1073b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 1074b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 1075b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 1076b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 1077b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 1078b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 1079ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 1080b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 1081b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 108244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 108344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 108444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 108544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 108644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 108744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 108844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 108944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 109044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 109144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 109244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 109344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 109444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 109544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 109644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 109744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 109844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 109944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 110044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 110181d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 11027e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "and_tmp", 11037e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 110481d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(tmp); 110581d664f099a5fd5fac777480532fb4307d591451Ian Romanick 11061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 110744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 11084950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 110944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 11104950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 111144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 111244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 11134950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 111444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 111544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 111644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 111744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 111844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 1119b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 11201660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 112144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 11221660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 112344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 11244950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11251660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 112644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 11271660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 112844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 11294950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 113144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 113244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11334950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 11344950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11364950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 11374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 11384950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11394950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 11404950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 11414950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11424950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 11434950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 11444950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 11454950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11464950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 114744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 114844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 114944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 115044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 115144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 115244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 115344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 115444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 115544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 115644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 115744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 115844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 115944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 116044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 116144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 116244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 116344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 116444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 116544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 1166dfd30ca6a95a7d95835dad78ffe1fba4d1f4ef69Kenneth Graunke ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 11677e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "or_tmp", 11687e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 11690b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 11704950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 117181d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_if *const stmt = new(ctx) ir_if(op[0]); 117281d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(stmt); 117381d664f099a5fd5fac777480532fb4307d591451Ian Romanick 1174a0879b9dd438d78635f047cdd5ed4c72bc831b60Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state); 11754950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 117644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 117744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 11784950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 117944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 118044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 118144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 118244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11834950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 118544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 11861660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 118744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 11884950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 119044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 11911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 119244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 11934950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11941660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 119544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 119644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11974950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 11984950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11994950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 12004950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 12014950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 12024950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 12034950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 12044950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 12051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 12061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1207ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1210a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 1211a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1212a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1213a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 1214a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 1215a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1216a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 1217a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 1218ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 1219a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 1220a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 12211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 12221660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 1223ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1224a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 1225a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1226a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 1227a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 1228a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 1229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 123018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 123118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 1232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1233bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 123418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 1235a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 1236a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12371660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 12381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12403e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 12418273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 124210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 124310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 124410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 1245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 1247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 1248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 1249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1252a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1253a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 125448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 125548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 125648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 125748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 125865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 125948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 126048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 126148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 1262768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 12631660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 12641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 126548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 12663e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 12678273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 126848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 126948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 127065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 127148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 127248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 1273a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1274a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 1275338ed6ec297d76746b6466c26c307722af965e60Chad Versace case ast_rs_assign: { 1276338ed6ec297d76746b6466c26c307722af965e60Chad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 1277338ed6ec297d76746b6466c26c307722af965e60Chad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 1278338ed6ec297d76746b6466c26c307722af965e60Chad Versace type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, 1279338ed6ec297d76746b6466c26c307722af965e60Chad Versace &loc); 1280338ed6ec297d76746b6466c26c307722af965e60Chad Versace ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], 1281338ed6ec297d76746b6466c26c307722af965e60Chad Versace type, op[0], op[1]); 1282338ed6ec297d76746b6466c26c307722af965e60Chad Versace result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), 1283338ed6ec297d76746b6466c26c307722af965e60Chad Versace temp_rhs, 1284338ed6ec297d76746b6466c26c307722af965e60Chad Versace this->subexpressions[0]->get_location()); 1285338ed6ec297d76746b6466c26c307722af965e60Chad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1286251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1287338ed6ec297d76746b6466c26c307722af965e60Chad Versace } 1288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 1290a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 1291d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace case ast_or_assign: { 1292d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 1293d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 1294d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, 1295d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace state, &loc); 1296d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], 1297d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace type, op[0], op[1]); 1298d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), 1299d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace temp_rhs, 1300d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace this->subexpressions[0]->get_location()); 1301d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1302251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1303d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace } 1304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 130596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 130696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 130796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 130896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 130996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 131096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 131196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 131296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 131396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 131496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 131596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 131696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 131796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 131896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 131996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 132096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 132196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 132296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 132396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 132496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 132596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 13260ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 13270ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 132896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 13290ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 13300ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 133196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 133296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 133396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 133496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 133596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 133696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 133796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 133896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 133996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 134096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1341bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1342bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1343db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 134496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 134596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 134696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 134796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 134896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 13490ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1350db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 13510ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 135296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 135396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 1354f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec: 1355f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * 1356f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * "The second and third expressions must be the same type, but can 1357f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * be of any type other than an array." 1358f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick */ 1359f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick if ((state->language_version <= 110) && type->is_array()) { 1360f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 1361f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick "operator must not be arrays."); 1362f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick error_emitted = true; 1363f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick } 1364f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick 13657825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 13667825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 13677825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 13687825d3d15710fdfcfc503754862963aac8065480Ian Romanick 13697825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 13707825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 13717825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 13727825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 13737825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 13747e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *const tmp = 13757e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); 13760b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 13770ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 13797825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 13800ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13817825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 13821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 13831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 13847825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 13851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 13867825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 13870ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13887825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 13891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 13901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 13917825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 13921660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 13937825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 13940ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13951660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 13967825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1397251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 139896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1399a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1400a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 140176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 140276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 140376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 14041660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 140576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 14061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 140776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1408a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 140976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1410768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 14111660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 14121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 141376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 14143e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 14158273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 141676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 141776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 141876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 141976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 142076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1421a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1422a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1423de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1424de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1425de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 14261660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1427de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 14281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1429de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1430de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1431de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1432a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1433de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1434768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 14351660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 14361660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1437de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1438de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1439de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1440de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 14418273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL)); 1442de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 14433e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 14448273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 1445de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1446de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1447de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1448de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1450de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1451a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1452a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 145318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1454a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1455a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1456a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 145727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 145827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 145927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 146027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 146127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 146227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 146327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 146427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1465a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1466b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 14671660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1468b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1469b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1470b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1471b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1472b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 147327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 147427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 147527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 147627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 147763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 147863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 147963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 148027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 148163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 148263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 148327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 148427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 148527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 148627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 148727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 148827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 148927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 149027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 149127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 149227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 149327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 149427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 149527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 149627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 149727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 149827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 149927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 150027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 150127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 150227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 150327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 150463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 150563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 150663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 150763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 150863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 150963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 151063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 151163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 151263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 151363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 151427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 151527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 151627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 151727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 151827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 151927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 152027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 152127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 152227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 152363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 152463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 152563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 152663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 152763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 152863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 152963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 153063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 153163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 153263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 153363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 153463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 153563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 153627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 153727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 153863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 153963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 154063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 154163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 154263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 154363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 154463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 154527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 154627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1547b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 154863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1549a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1550a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1551a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1552a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1553a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1554a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1555a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 155663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 155763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 155863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 15592b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke } else if (array->type->array_size() == 0) { 15602b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke _mesa_glsl_error(&loc, state, "unsized array index must be constant"); 1561a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } else { 1562a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt if (array->type->is_array()) { 15635226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius /* whole_variable_referenced can return NULL if the array is a 15645226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * member of a structure. In this case it is safe to not update 15655226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * the max_array_access field because it is never used for fields 15665226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * of structures. 15675226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius */ 1568a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt ir_variable *v = array->whole_variable_referenced(); 15695226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius if (v != NULL) 15705226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius v->max_array_access = array->type->array_size(); 1571a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } 157227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 157327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1574e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick /* From page 23 (29 of the PDF) of the GLSL 1.30 spec: 1575e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * 1576f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * "Samplers aggregated into arrays within a shader (using square 1577f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * brackets [ ]) can only be indexed with integral constant 1578f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * expressions [...]." 1579e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * 1580e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * This restriction was added in GLSL 1.30. Shaders using earlier version 1581e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * of the language should not be rejected by the compiler front-end for 1582e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * using this construct. This allows useful things such as using a loop 1583e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * counter as the index to an array of samplers. If the loop in unrolled, 1584e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * the code should compile correctly. Instead, emit a warning. 1585f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace */ 1586f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace if (array->type->is_array() && 1587f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace array->type->element_type()->is_sampler() && 1588f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace const_index == NULL) { 1589f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace 1590e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick if (state->language_version == 100) { 1591e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_warning(&loc, state, 1592e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1593e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is optional in GLSL ES 1.00"); 1594e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } else if (state->language_version < 130) { 1595e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_warning(&loc, state, 1596e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1597e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is forbidden in GLSL 1.30 and " 1598e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "later"); 1599e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } else { 1600e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_error(&loc, state, 1601e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1602e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is forbidden in GLSL 1.30 and " 1603e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "later"); 1604e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick error_emitted = true; 1605e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } 1606f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace } 1607f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace 160827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 160927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 161027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 161127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1612a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 161327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1614a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 16167cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 16177cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16197cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16278bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 16288bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1633bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->used = true; 1634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 163671d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 163718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 16450471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 16461660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1648a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 16500471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 16511660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1653a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1654a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 16550471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 16561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1659a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 16600471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 16611660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1663a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1665a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1668304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1669a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1673a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1674a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16752b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1676304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1677a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1680a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1681a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1683a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1686a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1687cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 168871d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1689a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1690a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1691a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1693a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1694fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 16950044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 169618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1697a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1698a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1699a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1700a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1701a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1702a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1703a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1704a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1705a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1706a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 170718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 170818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1709a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1710a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1711a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1712a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1713a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1716fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 17170044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 171818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1719a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 172018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 17218bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1722a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17232b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1724304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 172618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 17278bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1728a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1729a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1730a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1731a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1732a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1733a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1734a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 173528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 1736d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunkeprocess_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size, 173728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 173828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 173928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 174028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 174128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 174228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 174328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 174428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 174528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 174628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 174728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 174828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 174928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 175028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 175128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 175228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 175328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 175428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 175528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 175628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 175728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 175828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 175928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 176028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 176128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 176228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 176328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 176428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 176528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 176628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 176728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 176828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 176928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 177028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 177128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1772d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke } else if (state->es_shader) { 1773d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke /* Section 10.17 of the GLSL ES 1.00 specification states that unsized 1774d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke * array declarations have been removed from the language. 1775d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke */ 1776d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke _mesa_glsl_error(loc, state, "unsized array declarations are not " 1777d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke "allowed in GLSL ES 1.00."); 177828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 177928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1780f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick return glsl_type::get_array_instance(base, length); 178128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 178228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 178328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1784d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1785d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1786d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1787a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1788d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1789a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1790ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke type = state->symbols->get_type(this->type_name); 1791ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke *name = this->type_name; 1792a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1793ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke if (this->is_array) { 1794ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke YYLTYPE loc = this->get_location(); 1795ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke type = process_array_type(&loc, type, this->array_size, state); 1796a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1797a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1798a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1799a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1800a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1801a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1802a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1803a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1804768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var, 18052e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 18062e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1807a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1808bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick if (qual->flags.q.invariant) { 1809bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick if (var->used) { 1810bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick _mesa_glsl_error(loc, state, 1811bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "variable `%s' may not be redeclared " 1812bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "`invariant' after being used", 1813bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->name); 1814bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } else { 1815bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->invariant = 1; 1816bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } 1817bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } 1818a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1819e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.constant || qual->flags.q.attribute 1820e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || qual->flags.q.uniform 1821e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == fragment_shader))) 1822a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1823a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1824e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.centroid) 1825a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1826a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1827e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.attribute && state->target != vertex_shader) { 18282e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 18292e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 18302e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1831ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1832ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 18332e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 18342e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 183590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 183690b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 183790b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 183890b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 183990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 184090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 1841e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.varying) { 18420ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 18430ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 18440ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 18450ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 18460ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 18470ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 18480ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 18490ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 18500ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 18510ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 18520ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 18530ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 185490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 185590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 18567e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick /* If there is no qualifier that changes the mode of the variable, leave 18577e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick * the setting alone. 18587e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick */ 1859e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.in && qual->flags.q.out) 1860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1861e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.attribute || qual->flags.q.in 1862e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == fragment_shader))) 1863a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 1864e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.out 1865e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == vertex_shader))) 1866a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1867e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.uniform) 1868a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1869a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 187086b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (state->all_invariant && (state->current_function == NULL)) { 187186b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick switch (state->target) { 187286b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case vertex_shader: 187386b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (var->mode == ir_var_out) 187486b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 187586b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 187686b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case geometry_shader: 187786b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if ((var->mode == ir_var_in) || (var->mode == ir_var_out)) 187886b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 187986b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 188086b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case fragment_shader: 188186b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (var->mode == ir_var_in) 188286b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 188386b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 188486b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick } 188586b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick } 188686b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick 1887e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.flat) 1888a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1889e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.noperspective) 1890a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1891a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1892a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 18939d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 1894e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick var->pixel_center_integer = qual->flags.q.pixel_center_integer; 1895e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick var->origin_upper_left = qual->flags.q.origin_upper_left; 1896e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer) 18978d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick && (strcmp(var->name, "gl_FragCoord") != 0)) { 1898e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick const char *const qual_string = (qual->flags.q.origin_upper_left) 18998d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick ? "origin_upper_left" : "pixel_center_integer"; 19008d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 19018d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick _mesa_glsl_error(loc, state, 19028d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "layout qualifier `%s' can only be applied to " 19038d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "fragment shader input `gl_FragCoord'", 19048d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick qual_string); 19058d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick } 19068d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 1907eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (qual->flags.q.explicit_location) { 1908eee68d3631813580a14fa51fda6f0c959279256cIan Romanick const bool global_scope = (state->current_function == NULL); 1909eee68d3631813580a14fa51fda6f0c959279256cIan Romanick bool fail = false; 1910eee68d3631813580a14fa51fda6f0c959279256cIan Romanick const char *string = ""; 1911eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1912eee68d3631813580a14fa51fda6f0c959279256cIan Romanick /* In the vertex shader only shader inputs can be given explicit 1913eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * locations. 1914eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * 1915eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * In the fragment shader only shader outputs can be given explicit 1916eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * locations. 1917eee68d3631813580a14fa51fda6f0c959279256cIan Romanick */ 1918eee68d3631813580a14fa51fda6f0c959279256cIan Romanick switch (state->target) { 1919eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case vertex_shader: 1920eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (!global_scope || (var->mode != ir_var_in)) { 1921eee68d3631813580a14fa51fda6f0c959279256cIan Romanick fail = true; 1922eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string = "input"; 1923eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1924eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1925eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1926eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case geometry_shader: 1927eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_error(loc, state, 1928eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "geometry shader variables cannot be given " 1929eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "explicit locations\n"); 1930eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1931eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1932eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case fragment_shader: 1933eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (!global_scope || (var->mode != ir_var_in)) { 1934eee68d3631813580a14fa51fda6f0c959279256cIan Romanick fail = true; 1935eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string = "output"; 1936eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1937eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1938a75da2c0e85eb6b8279ec895c3f74cc4aefc0257Kenneth Graunke }; 1939eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1940eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (fail) { 1941eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_error(loc, state, 1942eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "only %s shader %s variables can be given an " 1943eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "explicit location\n", 1944eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_shader_target_name(state->target), 1945eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string); 1946eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } else { 1947eee68d3631813580a14fa51fda6f0c959279256cIan Romanick var->explicit_location = true; 194868a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick 194968a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick /* This bit of silliness is needed because invalid explicit locations 195068a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * are supposed to be flagged during linking. Small negative values 195168a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias 195268a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS). 195368a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * The linker needs to be able to differentiate these cases. This 195468a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * ensures that negative values stay negative. 195568a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick */ 195668a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick if (qual->location >= 0) { 195768a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick var->location = (state->target == vertex_shader) 195868a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick ? (qual->location + VERT_ATTRIB_GENERIC0) 195968a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick : (qual->location + FRAG_RESULT_DATA0); 196068a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick } else { 196168a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick var->location = qual->location; 196268a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick } 1963eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1964eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1965eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 19664bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Does the declaration use the 'layout' keyword? 19674bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19684bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool uses_layout = qual->flags.q.pixel_center_integer 19694bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.origin_upper_left 19704bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.explicit_location; 19714bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 19724bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Does the declaration use the deprecated 'attribute' or 'varying' 19734bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * keywords? 19744bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19754bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool uses_deprecated_qualifier = qual->flags.q.attribute 19764bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.varying; 19774bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 19784bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Is the 'layout' keyword used with parameters that allow relaxed checking. 19794bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * Many implementations of GL_ARB_fragment_coord_conventions_enable and some 19804bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * implementations (only Mesa?) GL_ARB_explicit_attrib_location_enable 19814bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * allowed the layout qualifier to be used with 'varying' and 'attribute'. 19824bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * These extensions and all following extensions that add the 'layout' 19834bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * keyword have been modified to require the use of 'in' or 'out'. 19844bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19854bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * The following extension do not allow the deprecated keywords: 19864bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19874bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_AMD_conservative_depth 19884bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_gpu_shader5 19894bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_separate_shader_objects 19904bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_tesselation_shader 19914bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_transform_feedback3 19924bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_uniform_buffer_object 19934bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19944bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * It is unknown whether GL_EXT_shader_image_load_store or GL_NV_gpu_shader5 19954bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * allow layout with the deprecated keywords. 19964bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19974bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool relaxed_layout_qualifier_checking = 19984bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick state->ARB_fragment_coord_conventions_enable; 19994bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 20004bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick if (uses_layout && uses_deprecated_qualifier) { 20014bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick if (relaxed_layout_qualifier_checking) { 20024bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick _mesa_glsl_warning(loc, state, 20034bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`layout' qualifier may not be used with " 20044bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`attribute' or `varying'"); 20054bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } else { 20064bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick _mesa_glsl_error(loc, state, 20074bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`layout' qualifier may not be used with " 20084bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`attribute' or `varying'"); 20094bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } 20104bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } 20114bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 201210eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke if (var->type->is_array() && state->language_version != 110) { 20139d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 20149d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 2015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2016a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2017a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2018fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 20190044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 202018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 2021a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2022953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 2023a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 2024a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 20258558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 2026c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 2027a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20286f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 20296f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20306f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 20316f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 20326f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 20336f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20346f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 20356f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20366f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 20376f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 20386f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 20396f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 20406f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 20416f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20426f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 20436f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20446f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 20456f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 20466f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20476f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20486f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 20496f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 20506f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 20516f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 20526f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 20546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 20556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 20566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 20586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 20596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 20606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 20616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 20636f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 20646f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 20656f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 20666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 20686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 2069bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } else if (earlier->used) { 2070bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick _mesa_glsl_error(& loc, state, 2071bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "variable `%s' may not be redeclared " 2072bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "`invariant' after being used", 2073bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick earlier->name); 20746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 20756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 20766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 20806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 20816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 20826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 20856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 20866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20873455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 20883455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 20893455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 20903455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 20913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 2092d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 2093304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 20946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 20956f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 20966f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 2097c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 2098c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 20996f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 2100c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 2101c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 2102c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 2103c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 2104a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21052b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 2106a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 2107768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var; 2108a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2109a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 2110a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 2111a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2112a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2113cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 2114a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 2115a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2116a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 2117a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 2118a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2119a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2120a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 2121a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 2122a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2123a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 2124a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2125a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2126a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 2127d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke var_type = process_array_type(&loc, decl_type, decl->array_size, 2128d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke state); 2129a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2130a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 2131a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2132a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21337e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); 2134a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21353f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 21363f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 21373f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 21383f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 21393f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 21403f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 21413f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 21423f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 214382c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick * This is relaxed in GLSL 1.30. It is also relaxed by any extension 214482c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick * that adds the 'layout' keyword. 21453f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 214682c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick if ((state->language_version < 130) 214782c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick && !state->ARB_explicit_attrib_location_enable 214882c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick && !state->ARB_fragment_coord_conventions_enable) { 2149e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.out) { 21503f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 21513f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 2152469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick "only valid for function parameters in %s.", 2153469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick decl->identifier, state->version_string); 21543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 2155e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.in) { 21563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 21573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 2158469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick "only valid for function parameters in %s.", 2159469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick decl->identifier, state->version_string); 21603f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 21613f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 21623f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 21633f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 21642e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 21652e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 2166a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2167e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.invariant) { 2168046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt if ((state->target == vertex_shader) && !(var->mode == ir_var_out || 2169046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt var->mode == ir_var_inout)) { 2170046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 2171046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature outval 2172046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 21736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 21746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 21756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 2176046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt } else if ((state->target == fragment_shader) && 2177046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt !(var->mode == ir_var_in || var->mode == ir_var_inout)) { 2178046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 2179046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature inval 2180046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 21816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 21826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 21836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 21846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 21856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 21866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 2187e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 2188b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 2189e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 2190b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 2191e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 2192e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 2193e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 2194e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.attribute) { 2195b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 2196e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.uniform) { 2197b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 2198e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.varying) { 2199b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 2200e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.in) { 2201e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 2202e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 2203e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.out) { 2204e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 2205e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 2206b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 2207b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 2208b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 2209e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 2210b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 2211e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 2212e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 2213e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 2214e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 221501a584d09350d2c726312e2c9e88c5dbc54bdb70Chad Versace var->read_only = true; 221601a584d09350d2c726312e2c9e88c5dbc54bdb70Chad Versace 2217fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 2218fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 2219fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 2220fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 2221fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 2222fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 2223fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 2224fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 2225fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 2226fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 22272d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 22282d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 22292d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 22302d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 22312d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 22322d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 2233fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 2234fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 2235fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 2236fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 2237fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 2238fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 2239fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 2240fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 2241fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 2242fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 2243fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 2244fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 2245fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 2246fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 2247fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 2248fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 2249fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 2250fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 2251fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 2252fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 2253fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 2254fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 2255fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 2256fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 2257fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2258fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 22592d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 2260fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 2261fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 2262fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 2263fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 2264fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 2265fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2266fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2267fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2268fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 226968d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace /* Integer vertex outputs must be qualified with 'flat'. 227068d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * 227168d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * From section 4.3.6 of the GLSL 1.30 spec: 227268d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * "If a vertex output is a signed or unsigned integer or integer 227368d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * vector, then it must be qualified with the interpolation qualifier 227468d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * flat." 227568d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace */ 227668d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace if (state->language_version >= 130 227768d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && state->target == vertex_shader 227868d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && state->current_function == NULL 227968d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->type->is_integer() 228068d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->mode == ir_var_out 228168d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->interpolation != ir_var_flat) { 228268d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 228368d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace _mesa_glsl_error(&loc, state, "If a vertex output is an integer, " 228468d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace "then it must be qualified with 'flat'"); 228568d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace } 228668d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 228768d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 2288605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace /* Interpolation qualifiers cannot be applied to 'centroid' and 2289605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * 'centroid varying'. 2290605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * 2291605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * From page 29 (page 35 of the PDF) of the GLSL 1.30 spec: 2292605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * "interpolation qualifiers may only precede the qualifiers in, 2293605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * centroid in, out, or centroid out in a declaration. They do not apply 2294605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * to the deprecated storage qualifiers varying or centroid varying." 2295605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace */ 2296605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace if (state->language_version >= 130 2297605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace && this->type->qualifier.has_interpolation() 2298605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace && this->type->qualifier.flags.q.varying) { 2299605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2300605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace const char *i = this->type->qualifier.interpolation_string(); 2301605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace assert(i != NULL); 2302605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace const char *s; 2303605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace if (this->type->qualifier.flags.q.centroid) 2304605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace s = "centroid varying"; 2305605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace else 2306605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace s = "varying"; 2307605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2308605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace _mesa_glsl_error(&loc, state, 2309605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace "qualifier '%s' cannot be applied to the " 2310605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace "deprecated storage qualifier '%s'", i, s); 2311605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace } 2312605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2313605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 23148faaa4a672c1062e486eda2525287715b554342dChad Versace /* Interpolation qualifiers can only apply to vertex shader outputs and 23158faaa4a672c1062e486eda2525287715b554342dChad Versace * fragment shader inputs. 23168faaa4a672c1062e486eda2525287715b554342dChad Versace * 23178faaa4a672c1062e486eda2525287715b554342dChad Versace * From page 29 (page 35 of the PDF) of the GLSL 1.30 spec: 23188faaa4a672c1062e486eda2525287715b554342dChad Versace * "Outputs from a vertex shader (out) and inputs to a fragment 23198faaa4a672c1062e486eda2525287715b554342dChad Versace * shader (in) can be further qualified with one or more of these 23208faaa4a672c1062e486eda2525287715b554342dChad Versace * interpolation qualifiers" 23218faaa4a672c1062e486eda2525287715b554342dChad Versace */ 23228faaa4a672c1062e486eda2525287715b554342dChad Versace if (state->language_version >= 130 23238faaa4a672c1062e486eda2525287715b554342dChad Versace && this->type->qualifier.has_interpolation()) { 23248faaa4a672c1062e486eda2525287715b554342dChad Versace 23258faaa4a672c1062e486eda2525287715b554342dChad Versace const char *i = this->type->qualifier.interpolation_string(); 23268faaa4a672c1062e486eda2525287715b554342dChad Versace assert(i != NULL); 23278faaa4a672c1062e486eda2525287715b554342dChad Versace 23288faaa4a672c1062e486eda2525287715b554342dChad Versace switch (state->target) { 23298faaa4a672c1062e486eda2525287715b554342dChad Versace case vertex_shader: 23308faaa4a672c1062e486eda2525287715b554342dChad Versace if (this->type->qualifier.flags.q.in) { 23318faaa4a672c1062e486eda2525287715b554342dChad Versace _mesa_glsl_error(&loc, state, 23328faaa4a672c1062e486eda2525287715b554342dChad Versace "qualifier '%s' cannot be applied to vertex " 23338faaa4a672c1062e486eda2525287715b554342dChad Versace "shader inputs", i); 23348faaa4a672c1062e486eda2525287715b554342dChad Versace } 23358faaa4a672c1062e486eda2525287715b554342dChad Versace break; 23368faaa4a672c1062e486eda2525287715b554342dChad Versace case fragment_shader: 23378faaa4a672c1062e486eda2525287715b554342dChad Versace if (this->type->qualifier.flags.q.out) { 23388faaa4a672c1062e486eda2525287715b554342dChad Versace _mesa_glsl_error(&loc, state, 23398faaa4a672c1062e486eda2525287715b554342dChad Versace "qualifier '%s' cannot be applied to fragment " 23408faaa4a672c1062e486eda2525287715b554342dChad Versace "shader outputs", i); 23418faaa4a672c1062e486eda2525287715b554342dChad Versace } 23428faaa4a672c1062e486eda2525287715b554342dChad Versace break; 23438faaa4a672c1062e486eda2525287715b554342dChad Versace default: 23448faaa4a672c1062e486eda2525287715b554342dChad Versace assert(0); 23458faaa4a672c1062e486eda2525287715b554342dChad Versace } 23468faaa4a672c1062e486eda2525287715b554342dChad Versace } 23478faaa4a672c1062e486eda2525287715b554342dChad Versace 23488faaa4a672c1062e486eda2525287715b554342dChad Versace 23491eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace /* From section 4.3.4 of the GLSL 1.30 spec: 23501eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace * "It is an error to use centroid in in a vertex shader." 23511eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace */ 23521eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace if (state->language_version >= 130 23531eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && this->type->qualifier.flags.q.centroid 23541eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && this->type->qualifier.flags.q.in 23551eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && state->target == vertex_shader) { 23561eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 23571eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace _mesa_glsl_error(&loc, state, 23581eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace "'centroid in' cannot be used in a vertex shader"); 23591eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace } 23601eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 23611eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 2362889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace /* Precision qualifiers exists only in GLSL versions 1.00 and >= 1.30. 2363889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace */ 2364889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace if (this->type->specifier->precision != ast_precision_none 2365889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace && state->language_version != 100 2366889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace && state->language_version < 130) { 2367889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2368889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace _mesa_glsl_error(&loc, state, 2369889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace "precision qualifiers are supported only in GLSL ES " 2370889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace "1.00, and GLSL 1.30 and later"); 2371889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace } 2372889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2373889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 237445e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace /* Precision qualifiers only apply to floating point and integer types. 2375889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * 2376889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * From section 4.5.2 of the GLSL 1.30 spec: 2377889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * "Any floating point or any integer declaration can have the type 2378889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * preceded by one of these precision qualifiers [...] Literal 2379889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * constants do not have precision qualifiers. Neither do Boolean 2380889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * variables. 2381889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace */ 2382889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace if (this->type->specifier->precision != ast_precision_none 238345e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !var->type->is_float() 238445e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !var->type->is_integer() 238545e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !(var->type->is_array() 238645e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && (var->type->fields.array->is_float() 238745e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace || var->type->fields.array->is_integer()))) { 2388889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2389889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace _mesa_glsl_error(&loc, state, 239045e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace "precision qualifiers apply only to floating point " 239145e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace "and integer types"); 2392889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace } 2393889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2394e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 2395e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 2396e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 2397e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 2398e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 2399e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 2400fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt exec_list initializer_instructions; 240166faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 240243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 240343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 240466faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 240566faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 240666faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 240766faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 240866faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 240966faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 241066faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 241166faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 241243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 241343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 241443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 241543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 241643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 241743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 241843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 241943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 242019360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 242143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 242243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 242343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 2424ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 242543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 242643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 242766faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 242866faec4895b7bb59a614087a200c05157191b4aeIan Romanick 24291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 2430fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions, 2431e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 243219360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 2433ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 2434307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 243566faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 2436e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant 2437e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || this->type->qualifier.flags.q.uniform) { 2438e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); 2439e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke if (new_rhs != NULL) { 2440e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs = new_rhs; 2441e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt 2442e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 2443e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (!constant_value) { 2444e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt _mesa_glsl_error(& initializer_loc, state, 2445e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "initializer of %s variable `%s' must be a " 2446e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "constant expression", 2447e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick (this->type->qualifier.flags.q.constant) 2448e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ? "const" : "uniform", 2449e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt decl->identifier); 2450e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 2451e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 2452e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 2453e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2454e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } else { 2455e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt rhs = constant_value; 2456e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = constant_value; 2457e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2458e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } else { 2459e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke _mesa_glsl_error(&initializer_loc, state, 2460e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "initializer of type %s cannot be assigned to " 2461e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "variable of type %s", 2462e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs->type->name, var->type->name); 2463e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 2464e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 2465e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 2466e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2467307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 2468307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 246966faec4895b7bb59a614087a200c05157191b4aeIan Romanick 2470307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 2471ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 2472e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant) 2473ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 2474ce030884064046925a655413097dd8257e9392ddIan Romanick 2475d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick /* Never emit code to initialize a uniform. 2476d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick */ 2477d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick const glsl_type *initializer_type; 2478d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick if (!this->type->qualifier.flags.q.uniform) { 2479d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick result = do_assignment(&initializer_instructions, state, 2480d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick lhs, rhs, 2481d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick this->get_location()); 2482d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick initializer_type = result->type; 2483d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick } else 2484d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick initializer_type = rhs->type; 2485d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick 2486b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick /* If the declared variable is an unsized array, it must inherrit 2487b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * its full type from the initializer. A declaration such as 2488b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2489b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * uniform float a[] = float[](1.0, 2.0, 3.0, 3.0); 2490b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2491b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * becomes 2492b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2493b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * uniform float a[4] = float[](1.0, 2.0, 3.0, 3.0); 2494b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2495b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * The assignment generated in the if-statement (below) will also 2496b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * automatically handle this case for non-uniforms. 2497b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2498b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * If the declared variable is not an array, the types must 2499b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * already match exactly. As a result, the type assignment 2500d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * here can be done unconditionally. For non-uniforms the call 2501d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * to do_assignment can change the type of the initializer (via 2502d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * the implicit conversion rules). For uniforms the initializer 2503d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * must be a constant expression, and the type of that expression 2504d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * was validated above. 2505b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick */ 2506d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick var->type = initializer_type; 2507b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick 2508ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 250966faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 251066faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 251117d86f4371da413176ba365ca26a58bac172d365Ian Romanick 25120ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 25130ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 25140ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 25150ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 25160ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 25170ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 2518e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant && decl->initializer == NULL) { 25190ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 252046f7105df487c91569f7e4a8da74d673c12e5619Chad Versace "const declaration of `%s' must be initialized", 252146f7105df487c91569f7e4a8da74d673c12e5619Chad Versace decl->identifier); 25220ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 25230ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 25245d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Check if this declaration is actually a re-declaration, either to 25255d25746640ee27882b69a962459727cf924443dbKenneth Graunke * resize an array or add qualifiers to an existing variable. 25265466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 2527a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * This is allowed for variables in the current scope, or when at 2528a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * global scope (for built-ins in the implicit outer scope). 25295466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 25305d25746640ee27882b69a962459727cf924443dbKenneth Graunke ir_variable *earlier = state->symbols->get_variable(decl->identifier); 2531a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke if (earlier != NULL && (state->current_function == NULL || 2532a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke state->symbols->name_declared_this_scope(decl->identifier))) { 25335466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25345d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 25355d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 25365d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "It is legal to declare an array without a size and then 25375d25746640ee27882b69a962459727cf924443dbKenneth Graunke * later re-declare the same name as an array of the same 25385d25746640ee27882b69a962459727cf924443dbKenneth Graunke * type and specify a size." 25395d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 25405d25746640ee27882b69a962459727cf924443dbKenneth Graunke if ((earlier->type->array_size() == 0) 25415466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 25425466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 25435466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 25445466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 25455466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 25465466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 25475466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 2548cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 2549cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 2550cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 2551cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 2552cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 2553127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 2554cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 2555127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 2556cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 2557cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 2558cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 2559cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 2560127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 256112873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 25625466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 25635466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25645466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 25655466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 25665466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 25675466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 25685466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25695466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 25705466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 25715466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 25726e006273840282e06a08655553821ef8176b2d9cChad Versace } else if (state->ARB_fragment_coord_conventions_enable 25735d25746640ee27882b69a962459727cf924443dbKenneth Graunke && strcmp(var->name, "gl_FragCoord") == 0 25745d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->type == var->type 25755d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->mode == var->mode) { 25764a962170d7cf4243d6ae156fca20a6167388925dEric Anholt /* Allow redeclaration of gl_FragCoord for ARB_fcc layout 25774a962170d7cf4243d6ae156fca20a6167388925dEric Anholt * qualifiers. 25784a962170d7cf4243d6ae156fca20a6167388925dEric Anholt */ 25794a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->origin_upper_left = var->origin_upper_left; 25804a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->pixel_center_integer = var->pixel_center_integer; 2581b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace 2582b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace /* According to section 4.3.7 of the GLSL 1.30 spec, 2583b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * the following built-in varaibles can be redeclared with an 2584b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * interpolation qualifier: 2585b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_FrontColor 2586b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_BackColor 2587b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_FrontSecondaryColor 2588b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_BackSecondaryColor 2589b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_Color 2590b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_SecondaryColor 2591b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace */ 2592b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace } else if (state->language_version >= 130 2593b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && (strcmp(var->name, "gl_FrontColor") == 0 2594b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_BackColor") == 0 2595b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_FrontSecondaryColor") == 0 2596b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_BackSecondaryColor") == 0 2597b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_Color") == 0 2598b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_SecondaryColor") == 0) 2599b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && earlier->type == var->type 2600b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && earlier->mode == var->mode) { 2601b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace earlier->interpolation = var->interpolation; 26025466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 26035466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 26045d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier); 26055466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 26065466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 26075466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 26085466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 26095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 26105d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* By now, we know it's a new variable declaration (we didn't hit the 26115d25746640ee27882b69a962459727cf924443dbKenneth Graunke * above "continue"). 26125d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26135d25746640ee27882b69a962459727cf924443dbKenneth Graunke * From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 26145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 26155466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 26165466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 26175466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 26185466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 2619de3b40d8cdc42cc1cd71dd65c90d6d569d922fc6Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) 26205466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 26215466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 26225466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 26235466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 26245d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Add the variable to the symbol table. Note that the initializer's 26255d25746640ee27882b69a962459727cf924443dbKenneth Graunke * IR was already processed earlier (though it hasn't been emitted yet), 26265d25746640ee27882b69a962459727cf924443dbKenneth Graunke * without the variable in scope. 26275d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26285d25746640ee27882b69a962459727cf924443dbKenneth Graunke * This differs from most C-like languages, but it follows the GLSL 26295d25746640ee27882b69a962459727cf924443dbKenneth Graunke * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 26305d25746640ee27882b69a962459727cf924443dbKenneth Graunke * spec: 26315d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26325d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "Within a declaration, the scope of a name starts immediately 26335d25746640ee27882b69a962459727cf924443dbKenneth Graunke * after the initializer if present or immediately after the name 26345d25746640ee27882b69a962459727cf924443dbKenneth Graunke * being declared if not." 26355d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 2636001eee52d461233b1e1d6ed3577965e9bcb209e8Eric Anholt if (!state->symbols->add_variable(var)) { 26375d25746640ee27882b69a962459727cf924443dbKenneth Graunke YYLTYPE loc = this->get_location(); 26385d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "name `%s' already taken in the " 26395d25746640ee27882b69a962459727cf924443dbKenneth Graunke "current scope", decl->identifier); 26405d25746640ee27882b69a962459727cf924443dbKenneth Graunke continue; 26415d25746640ee27882b69a962459727cf924443dbKenneth Graunke } 26425d25746640ee27882b69a962459727cf924443dbKenneth Graunke 26438048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt /* Push the variable declaration to the top. It means that all 26448048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * the variable declarations will appear in a funny 26458048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * last-to-first order, but otherwise we run into trouble if a 26468048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is prototyped, a global var is decled, then the 26478048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is defined with usage of the global var. See 26488048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * glslparsertest's CorrectModule.frag. 26498048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt */ 26508048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt instructions->push_head(var); 2651fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt instructions->append_list(&initializer_instructions); 2652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2653a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 26548558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 26558558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 26568558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 26578558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 26588558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 26598558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 26608558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 26618558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 26628558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 2663a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 26648558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 2665a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2668fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 26690044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 267018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 2671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2672953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 2673a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 2674a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 26752e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 2676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2677d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 2678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 2680a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 2681a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 268318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 2684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2686a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 268718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 2688a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2689a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 26900471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 2691a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2693068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 2694068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2695068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 2696068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 2697068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 2698068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 2699068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 2700068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2701068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 2702068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 2703068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 2704068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 2705cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 2706cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 2707cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2708cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2709cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2710cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2711068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2712cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2713068c80cfe0a280490353b6b007165d717c672eedEric Anholt 271445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 271545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 271645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 271745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 271845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2719e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke /* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...) 2720e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke * call already handled the "vec4[..] foo" case. 2721e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke */ 2722e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (this->is_array) { 2723d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke type = process_array_type(&loc, type, this->array_size, state); 2724e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2725e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2726e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (type->array_size() == 0) { 2727e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke _mesa_glsl_error(&loc, state, "arrays passed as parameters must have " 2728e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke "a declared size."); 2729e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke type = glsl_type::error_type; 2730e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2731e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2732cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 27337e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); 2734a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2735cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2736cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2737cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 27382e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2739a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27400044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2741a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2742a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2743a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2744a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2745a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2746a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2747a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 274845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2749304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 275045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 275145d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 275245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2753a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2754cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2755cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2756a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27572b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 275845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2759068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2760cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2761cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2762cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2763cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2764cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2765cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2766cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2767cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2768cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2769cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2770cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2771cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2772a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2773a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2774a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2775a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27766fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunkevoid 27776fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunkeemit_function(_mesa_glsl_parse_state *state, exec_list *instructions, 27786fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke ir_function *f) 27796fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke{ 27806fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke /* Emit the new function header */ 27816fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke if (state->current_function == NULL) { 27826fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke instructions->push_tail(f); 27836fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke } else { 27846fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke /* IR invariants disallow function declarations or definitions nested 27856fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * within other function definitions. Insert the new ir_function 27866fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * block in the instruction sequence before the ir_function block 27876fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * containing the current ir_function_signature. 27886fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke */ 27896fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke ir_function *const curr = 27906fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke const_cast<ir_function *>(state->current_function->function()); 27916fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 27926fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke curr->insert_before(f); 27936fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke } 27946fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke} 27956fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 27966fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 2797fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 279892318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 279992318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2800a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2801953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 280218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 280392318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 280492318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2805a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2806ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2807a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 280863b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick /* From page 21 (page 27 of the PDF) of the GLSL 1.20 spec, 280963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 281063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "Function declarations (prototypes) cannot occur inside of functions; 281163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * they must be at global scope, or for the built-in functions, outside 281263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * the global scope." 281363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 281463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * From page 27 (page 33 of the PDF) of the GLSL ES 1.00.16 spec, 281563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 281663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "User defined functions may only be defined within the global scope." 281763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 281863b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * Note that this language does not appear in GLSL 1.10. 281963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick */ 282063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick if ((state->current_function != NULL) && (state->language_version != 110)) { 282163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick YYLTYPE loc = this->get_location(); 282263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick _mesa_glsl_error(&loc, state, 282363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "declaration of function `%s' not allowed within " 282463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "function body", name); 282563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick } 282663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick 2827edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 2828edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * 2829edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * "Identifiers starting with "gl_" are reserved for use by 2830edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * OpenGL, and may not be declared in a shader as either a 2831edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * variable or a function." 2832edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke */ 2833edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke if (strncmp(name, "gl_", 3) == 0) { 2834edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke YYLTYPE loc = this->get_location(); 2835edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke _mesa_glsl_error(&loc, state, 2836edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke "identifier `%s' uses reserved `gl_' prefix", name); 2837edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke } 2838edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke 2839a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2840a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2841a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2842a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 284345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 284445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 284545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2846a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2847e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2848e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 284992318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2850e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 285176e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt if (!return_type) { 285276e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt YYLTYPE loc = this->get_location(); 285376e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt _mesa_glsl_error(&loc, state, 285476e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt "function `%s' has undeclared return type `%s'", 285576e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt name, return_type_name); 285676e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt return_type = glsl_type::error_type; 285776e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt } 2858e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2859ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2860ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2861ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2862ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2863ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2864ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2865ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2866ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2867ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2868a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2869a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2870a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2871a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2872e466b182bbf21f62fe6542091f4af3275555db80Ian Romanick f = state->symbols->get_function(name); 287381f03393982c29f8f4165b5629c8e8fb708b97a3Kenneth Graunke if (f != NULL && (state->es_shader || f->has_user_signature())) { 2874202604e8160157e4e80b3458175e0170d168e557Ian Romanick sig = f->exact_matching_signature(&hir_parameters); 28750d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 28760d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 28770d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 28780d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2879abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 28800d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 28810d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 28820d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 28831e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 28840d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 28850d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 288660be7626b829af7e1d07330b9a88468924ba350eEric Anholt 28870d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 28880d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 28890d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2890a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 28910d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 28920d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2893a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 28940d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 2895a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2896a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2897a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 28981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 2899e8f5ebf313da3ce33ccbbcf9b72946853035fbddEric Anholt if (!state->symbols->add_function(f)) { 2900e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke /* This function name shadows a non-function use of the same name. */ 2901e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke YYLTYPE loc = this->get_location(); 2902e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke 2903e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke _mesa_glsl_error(&loc, state, "function name `%s' conflicts with " 2904e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke "non-function", name); 2905e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke return NULL; 2906e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke } 29079fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 29086fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke emit_function(state, instructions, f); 2909a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2910a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2911ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2912ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 291325711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2914ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2915ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2916ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2917ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2918174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 291992318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2920174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2921174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2922174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2923174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2924ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2925a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2926a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2927a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 292892318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 29291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 293092318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2931a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2932a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2933bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 293492318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 293592318a947958892497722772b03c643ebc943294Ian Romanick 293692318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 293792318a947958892497722772b03c643ebc943294Ian Romanick */ 293892318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 293992318a947958892497722772b03c643ebc943294Ian Romanick} 294092318a947958892497722772b03c643ebc943294Ian Romanick 294192318a947958892497722772b03c643ebc943294Ian Romanick 294292318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 294392318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 294492318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 294592318a947958892497722772b03c643ebc943294Ian Romanick{ 294692318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 294792318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2948e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 294992318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2950826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke if (signature == NULL) 2951826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke return NULL; 2952a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 295341ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 295441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 29556de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 295641ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2957e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2958e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 29608bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2961e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2962fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2963e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2964fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2965a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29663359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 29673359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 29683359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 29693359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 29703359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 29713359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 29723359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 29733359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 2974001eee52d461233b1e1d6ed3577965e9bcb209e8Eric Anholt state->symbols->add_variable(var); 29753359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29789fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2979894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 29809fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2981a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29828bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2983a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 298441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 298541ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2986a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29876de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 29886de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 29896de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 29906de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 29916de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 29926de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 29936de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 29946de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2995a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2997a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2998a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 299916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 300016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3001fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 300216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 300316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 300416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 3005953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 300616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3007c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 3008c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 300916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 3010aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 301116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 301216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 3013ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 3014ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 3015ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 3016ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 3017ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 3018ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 3019ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 3020f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 3021ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 302216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3023b4cdba687c098eea2ecc61349a4ea02a8769909eChad Versace ir_rvalue *const ret = opt_return_value->hir(instructions, state); 302416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 302516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 302618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 302718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 302818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 302918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 303018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 303118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 303218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 303318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 303418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 303518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 303618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 303716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 30381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 303916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 3040aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 3041aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 3042aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 3043aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 3044aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 3045aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 3046aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 3047f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 3048aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 30491660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 305016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 305116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 30526de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 305316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 3054c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 305516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 305616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3057c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 3058b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 3059b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 3060b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 3061b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 3062b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 3063b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 306477049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 3065c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 3066c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 3067c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 3068c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 30694cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 30704cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 30714cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 30724cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 30734cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 30744cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 30754cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 30764cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 30774cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 30784cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 30794cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 30804cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 30814cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 30824cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 30834cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 30844cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 30852d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt /* Inline the for loop expression again, since we don't know 30862d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * where near the end of the loop body the normal copy of it 30872d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * is going to be placed. 30882d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt */ 30892d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt if (mode == ast_continue && 30902d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression) { 30912d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, 30922d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state); 30932d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt } 30942d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 30954cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 30964cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 30971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 30981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 30991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 31004cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 31014cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 31024cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 31034cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 3104c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 3105b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 3106b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 310716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 310816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 310916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 311016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 31113c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31123c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31133c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 31143c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 31153c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 31163c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 3117953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 31181660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 31193c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 31203c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31213c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 31223c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 31233c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 31243c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 31253c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 31263c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 31273c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 31283c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 31293c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 31303c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 31313c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 31323c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31333c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 31343c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 31353c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 31363c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31371660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 31383c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 3139665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (then_statement != NULL) { 3140665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 31414f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 3142665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 3143665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 31443c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 3145665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (else_statement != NULL) { 3146665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 31474f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 3148665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 3149665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 31503c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31513c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 31523c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31533c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 31543c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 31553c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 31563c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 31579e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31589e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31598c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 31608c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 31618c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 31629e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 3163953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 31641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 31659e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 31669e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 31679e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 31689e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31699e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 31709e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 31719e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 31729e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31739e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 31749e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 31759e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 31769e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 31779e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 31789e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 31799e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 31801660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 31811660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 31829e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 31849e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31859e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 31861660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 31879e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31889e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 31899e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 31909e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 31919e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 31928c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 31938c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 31948c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 31958c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 31968c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 31978c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 31988c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 3199953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 32001660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 3201484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 32028c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 3203484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 32048c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 32058c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32068c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 32078c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 32088c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 32108c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 32118c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32128c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 32138c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 32148c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 32152d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; 32162d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 32178c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 32182d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = this; 32198c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32208c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 32218c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 32229e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32234f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 32244f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 32259e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32269e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 32279e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 32289e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32298c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 32308c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 32318c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 3232484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 32339e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 32349e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 3235e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 3236e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 3237e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 32382d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = nesting_ast; 3239e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 32409e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 32419e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 32429e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 32439e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 32443455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 32453455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 32463455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 32473455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 32483455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 32493455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 325008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (!this->is_precision_statement && this->structure == NULL) 325108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 325208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 325308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace YYLTYPE loc = this->get_location(); 325408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 325508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->precision != ast_precision_none 325608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && state->language_version != 100 325708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && state->language_version < 130) { 325808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 325908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "precision qualifiers exist only in " 326008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "GLSL ES 1.00, and GLSL 1.30 and later"); 326108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 326208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 326308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->precision != ast_precision_none 326408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && this->structure != NULL) { 326508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 326608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "precision qualifiers do not apply to structures"); 326708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 326808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 326908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 327008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace /* If this is a precision statement, check that the type to which it is 327108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * applied is either float or int. 327208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * 327308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * From section 4.5.3 of the GLSL 1.30 spec: 327408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * "The precision statement 327508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * precision precision-qualifier type; 327608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * can be used to establish a default precision qualifier. The type 327708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * field can be either int or float [...]. Any other types or 327808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * qualifiers will result in an error. 327908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace */ 328008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->is_precision_statement) { 328108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace assert(this->precision != ast_precision_none); 328208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace assert(this->structure == NULL); /* The check for structures was 328308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * performed above. */ 328408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->is_array) { 328508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 328608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "default precision statements do not apply to " 328708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "arrays"); 328808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 328908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 329008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->type_specifier != ast_float 329108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && this->type_specifier != ast_int) { 329208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 329308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "default precision statements apply only to types " 329408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "float and int"); 329508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 329608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 329708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 329808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace /* FINISHME: Translate precision statements into IR. */ 329908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 330008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 330108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 33023455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 33033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 330485ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 330585ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 33063455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 33073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33093455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 33103455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 33113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 33123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 33133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 33143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 33163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 33173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 33183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 33193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 33202b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 33212b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 3322304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 33233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 33243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33273455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 33283455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 33293455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 33303455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 33313455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 333221b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, 333321b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt decl_count); 33343455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33353455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 33362b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 33372b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 33383455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 33393455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33403455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 33413455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 3342c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke /* Section 10.9 of the GLSL ES 1.00 specification states that 3343c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke * embedded structure definitions have been removed from the language. 3344c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke */ 3345c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke if (state->es_shader && decl_list->type->specifier->structure != NULL) { 3346c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke YYLTYPE loc = this->get_location(); 3347c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke _mesa_glsl_error(&loc, state, "Embedded structure definitions are " 3348c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke "not allowed in GLSL ES 1.00."); 3349c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke } 3350c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke 33513455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 33523455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 33533455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33542b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 33552b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 3356d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke const struct glsl_type *field_type = decl_type; 3357d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke if (decl->is_array) { 3358d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke YYLTYPE loc = decl->get_location(); 3359d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke field_type = process_array_type(&loc, decl_type, decl->array_size, 3360d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke state); 3361d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke } 336273986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 336373986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 33643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 33653455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 33663455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33673455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33693455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 33703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 337149e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 3372ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke glsl_type::get_record_instance(fields, decl_count, this->name); 33731d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 3374ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 3375a789ca649cb143c0c5bf3209ff1bde398fbd777eIan Romanick if (!state->symbols->add_type(name, t)) { 3376ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 3377ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 3378a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 3379a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 3380a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 3381a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 3382a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 3383a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 3384a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 3385a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 3386a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 3387a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 3388ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 33893455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33903455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 33913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 33923455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 33933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 3394