ast_to_hir.cpp revision 45e8e6c6b1b7f3bc00a578fa6809c9bc719c171a
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) { 64210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!lhs->is_lvalue()) { 64310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 64410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 64510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 64610eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke 64710eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke if (state->es_shader && lhs->type->is_array()) { 64810eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke _mesa_glsl_error(&lhs_loc, state, "whole array assignment is not " 64910eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke "allowed in GLSL ES 1.00."); 65010eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke error_emitted = true; 65110eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke } 65210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 65310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 654336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 65510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 65610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 65710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 65810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 6590157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6600157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 6610157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 6620157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 6630157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 6640157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 6650157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 6660157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 6670157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6680157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 6690157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 67036ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 6710157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 6720157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 6730157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 67463f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 67563f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 67663f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 67763f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 67863f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 67963f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 68063f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 681f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 6820157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 6839703ed05e684f4269cd8af27c94e9b6bf8781d85Eric Anholt d->type = var->type; 6840157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 68510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 68610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 6872731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 6882731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 6892731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 6902731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 6912731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 6922731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 6932731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 6942731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 6952731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 6962731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 6977e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", 6987e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 699e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); 700ae805922b7e3cdaf3aee26c3b799fe3608669bbaEric Anholt instructions->push_tail(var); 701e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt instructions->push_tail(new(ctx) ir_assignment(deref_var, 7021660a2954797e056caba319c5d6c70b0d4be22feCarl Worth rhs, 7031660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 704e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var = new(ctx) ir_dereference_variable(var); 7052731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt 7068e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick if (!error_emitted) 7078e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); 70810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 7091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 71010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 7110bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 712de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 713959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 714de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 7151660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 716de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 717de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7187e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", 7197e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 72043b5b03d67ce890e867c81d4a5cfc4871d711d43Eric Anholt instructions->push_tail(var); 721de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 722de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), 7241660a2954797e056caba319c5d6c70b0d4be22feCarl Worth lvalue, NULL)); 725de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 726de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 727de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 728de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 729de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 730de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 7311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 732de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 733de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 734de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 735fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 7360044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 73718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 73818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 73918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 74018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 74118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 74218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 74318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 74418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 745b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholtstatic void 746b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholtmark_whole_array_access(ir_rvalue *access) 747b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt{ 748b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt ir_dereference_variable *deref = access->as_dereference_variable(); 749b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 750b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt if (deref) { 751b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt deref->var->max_array_access = deref->type->length - 1; 752b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt } 753b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt} 754b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 755ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholtstatic ir_rvalue * 756ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholtdo_comparison(void *mem_ctx, int operation, ir_rvalue *op0, ir_rvalue *op1) 757ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt{ 758ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt int join_op; 7596d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick ir_rvalue *cmp = NULL; 760ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 761ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt if (operation == ir_binop_all_equal) 762ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt join_op = ir_binop_logic_and; 763ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt else 764ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt join_op = ir_binop_logic_or; 765ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 766ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt switch (op0->type->base_type) { 767ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_FLOAT: 768ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_UINT: 769ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_INT: 770ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_BOOL: 771ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt return new(mem_ctx) ir_expression(operation, op0, op1); 772ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 773ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_ARRAY: { 774ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt for (unsigned int i = 0; i < op0->type->length; i++) { 775ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt ir_rvalue *e0, *e1, *result; 776ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 777ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e0 = new(mem_ctx) ir_dereference_array(op0->clone(mem_ctx, NULL), 778ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt new(mem_ctx) ir_constant(i)); 779ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e1 = new(mem_ctx) ir_dereference_array(op1->clone(mem_ctx, NULL), 780ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt new(mem_ctx) ir_constant(i)); 781ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(mem_ctx, operation, e0, e1); 782ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 7836d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp) { 7846d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_expression(join_op, cmp, result); 785ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } else { 7866d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = result; 787ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 788ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 789b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt 790b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt mark_whole_array_access(op0); 791b4f585665c31b1f80d909e38b3b2a9fab0c03076Eric Anholt mark_whole_array_access(op1); 7926d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 793ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 794ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 795ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_STRUCT: { 796ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt for (unsigned int i = 0; i < op0->type->length; i++) { 797ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt ir_rvalue *e0, *e1, *result; 798ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt const char *field_name = op0->type->fields.structure[i].name; 799ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 800ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e0 = new(mem_ctx) ir_dereference_record(op0->clone(mem_ctx, NULL), 801ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt field_name); 802ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt e1 = new(mem_ctx) ir_dereference_record(op1->clone(mem_ctx, NULL), 803ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt field_name); 804ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(mem_ctx, operation, e0, e1); 805ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 8066d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp) { 8076d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_expression(join_op, cmp, result); 808ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } else { 8096d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = result; 810ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 811ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 8126d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 813ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 814ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt 815ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_ERROR: 816ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_VOID: 817ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt case GLSL_TYPE_SAMPLER: 818ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt /* I assume a comparison of a struct containing a sampler just 819ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt * ignores the sampler present in the type. 820ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt */ 8216d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 8226d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick 8236d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick default: 8246d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick assert(!"Should not get here."); 8256d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick break; 826ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt } 827d56c97413ee65e40e3544b89ffca450df9ba1c06Eric Anholt 8286d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick if (cmp == NULL) 8296d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick cmp = new(mem_ctx) ir_constant(true); 8306d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick 8316d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick return cmp; 832ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt} 83318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 834fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 8350044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 83618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 837a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 838953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 839a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 840a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 841a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 842a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 843a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 844a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 845a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 846a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 847a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 848a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 849a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 850a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 851a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 852a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 853a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 8544dfb89904c0a3d2166e9a3fc0253a254680e91bcLuca Barbieri ir_binop_all_equal, 8554dfb89904c0a3d2166e9a3fc0253a254680e91bcLuca Barbieri ir_binop_any_nequal, 856a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 857a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 858a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 859a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 861a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 862a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 863a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 864a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 865a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 866a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 867a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 868a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 869a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 870a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 871a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 872a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 873a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 874a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 875a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 876a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 877a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 878a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 879a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 880de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 881de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 882de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 883de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 884a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 885a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 886a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 887a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 888a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 889a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 890a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 891a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 892a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 893a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 894fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 8951c325af4d6b907e0a47ab7f868a2a78f054f153fAras Pranckevicius ir_rvalue *op[3]; 8960471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 897a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 898a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 899a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 90018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 901a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 90218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 9036652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 90418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 90518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 906a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 90710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 90810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 90910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 91010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 911a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 9126652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 913a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 914a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 91518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 916a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 917c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth type = unary_arithmetic_result_type(op[0]->type, state, & loc); 918c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth 919c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth error_emitted = type->is_error(); 920a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 921a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 922a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 923a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 924a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 92518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 926a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 92765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 928a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 92965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 930a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9321660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 933a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 934a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 935a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 936a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 937a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 938a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 93918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 94018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 941a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 942bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 94318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 944a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 945a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 946a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9471660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9481660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 949a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 950a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 951a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 95218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 95318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 954a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 95565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 95718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9601660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 96165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 962a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 963a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 964a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 965a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 9665c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace if (state->language_version < 130) { 9675c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace _mesa_glsl_error(&loc, state, "operator %s requires GLSL 1.30", 9685c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace operator_string(this->oper)); 9695c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace error_emitted = true; 9705c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace } 9715c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace 9725c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 9735c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 974c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, 975c0197ab0af94ed0f3b2d453fb1ee6589f15d8e9cChad Versace &loc); 9765c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace result = new(ctx) ir_expression(operations[this->oper], type, 9775c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace op[0], op[1]); 9785c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 9795c4c36f7f3842e287b303b1eca8d260c37e3580bChad Versace break; 980a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 981a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 982a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 983a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 984a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 98518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 98618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 987a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 98865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 989a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 990a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 991a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 992a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 993a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 994a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 995cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 9981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 99965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 1000a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1001a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1002a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 1003a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 10046e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 10056e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 10066e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 10076e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 10086e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 10096e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 10106e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 10116e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 10126e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 10136e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 10146e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 10156e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 1016bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 1017bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 1018212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 10196e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 10206e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 10216e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 1022a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 1023a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 1024a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 1025a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 1026a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 10276e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 10286e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 1029ff79633d9f930e396933a0ad9564824ec73ea4dcEric Anholt result = do_comparison(ctx, operations[this->oper], op[0], op[1]); 10306e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 10316e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 10326d36be508ff0765beb6cf6bb95a323ff01e458ddIan Romanick assert(error_emitted || (result->type == glsl_type::bool_type)); 1033a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1034a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1035a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 1036a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 1037a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 10381eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 10391eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[1] = this->subexpressions[1]->hir(instructions, state); 1040cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, 1041cfdbf8bc8497b29fbdd9fa7bd00da554aecb5962Chad Versace state, &loc); 10421eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(operations[this->oper], type, 10431eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0], op[1]); 10441eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 10451eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke break; 10461eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 1047a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 10481eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 10491eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10501eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (state->language_version < 130) { 10511eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30"); 10521eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 10531eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 10541eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10551eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (!op[0]->type->is_integer()) { 10561eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "operand of `~' must be an integer"); 10571eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 10581eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 10591eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 10601eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke type = op[0]->type; 10611eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(ir_unop_bit_not, type, op[0], NULL); 1062a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1063a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 10644950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 1065b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1066b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 1067b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 1068b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 1069b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 1070b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 1071b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 1072ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 1073b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 1074b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 107544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 107644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 107744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 107844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 107944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 108044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 108144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 108244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 108344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 108444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 108544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 108644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 108744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 108844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 108944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 109044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 109144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 109244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 109344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 109481d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 10957e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "and_tmp", 10967e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 109781d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(tmp); 109881d664f099a5fd5fac777480532fb4307d591451Ian Romanick 10991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 110044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 11014950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 110244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 11034950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 110444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 110544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 11064950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 110744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 110844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 110944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 111044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 111144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 1112b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 11131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 111444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 11151660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 111644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 11174950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11181660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 111944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 11201660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 112144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 11224950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 112444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 112544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11264950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 11274950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11284950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11294950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 11304950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 11314950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11324950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 11334950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 11344950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 11364950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 11374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 11384950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11394950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 114044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 114144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 114244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 114344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 114444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 114544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 114644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 114744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 114844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 114944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 115044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 115144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 115244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 115344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 115444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 115544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 115644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 115744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 115844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 1159dfd30ca6a95a7d95835dad78ffe1fba4d1f4ef69Kenneth Graunke ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 11607e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "or_tmp", 11617e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 11620b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 11634950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 116481d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_if *const stmt = new(ctx) ir_if(op[0]); 116581d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(stmt); 116681d664f099a5fd5fac777480532fb4307d591451Ian Romanick 1167a0879b9dd438d78635f047cdd5ed4c72bc831b60Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state); 11684950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 116944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 117044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 11714950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 117244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 117344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 117444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 117544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11764950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 117844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 11791660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 118044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 11814950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 118344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 11841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 118544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 11864950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 118844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 118944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 11904950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 11914950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 11924950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11934950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 11944950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 11954950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 11964950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11974950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 11981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 11991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1200ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1202a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1203a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 1204a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1205a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1206a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 1207a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 1208a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1209a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 1210a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 1211ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 1212a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 1213a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 12141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 12151660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 1216ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1217a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 1218a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1219a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 1220a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 1221a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 1222a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 122318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 122418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 1225a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1226bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 122718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 1228a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 1229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 12311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12333e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 12348273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 123510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 123610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 123710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 1238a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 1240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 1241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 1242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1244a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 124748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 124848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 124948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 125048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 125165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 125248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 125348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 125448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 1255768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 12561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 12571660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 125848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 12593e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 12608273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 126148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 126248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 126365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 126448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 126548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 1266a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1267a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 1268338ed6ec297d76746b6466c26c307722af965e60Chad Versace case ast_rs_assign: { 1269338ed6ec297d76746b6466c26c307722af965e60Chad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 1270338ed6ec297d76746b6466c26c307722af965e60Chad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 1271338ed6ec297d76746b6466c26c307722af965e60Chad Versace type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, 1272338ed6ec297d76746b6466c26c307722af965e60Chad Versace &loc); 1273338ed6ec297d76746b6466c26c307722af965e60Chad Versace ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], 1274338ed6ec297d76746b6466c26c307722af965e60Chad Versace type, op[0], op[1]); 1275338ed6ec297d76746b6466c26c307722af965e60Chad Versace result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), 1276338ed6ec297d76746b6466c26c307722af965e60Chad Versace temp_rhs, 1277338ed6ec297d76746b6466c26c307722af965e60Chad Versace this->subexpressions[0]->get_location()); 1278338ed6ec297d76746b6466c26c307722af965e60Chad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1279251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1280338ed6ec297d76746b6466c26c307722af965e60Chad Versace } 1281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1282a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 1283a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 1284d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace case ast_or_assign: { 1285d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace op[0] = this->subexpressions[0]->hir(instructions, state); 1286d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace op[1] = this->subexpressions[1]->hir(instructions, state); 1287d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, 1288d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace state, &loc); 1289d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], 1290d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace type, op[0], op[1]); 1291d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), 1292d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace temp_rhs, 1293d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace this->subexpressions[0]->get_location()); 1294d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1295251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1296d03ac0f8d81fd3032d271586d936f14b7d9201d5Chad Versace } 1297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 129896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 129996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 130096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 130196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 130296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 130396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 130496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 130596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 130696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 130796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 130896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 130996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 131096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 131196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 131296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 131396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 131496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 131596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 131696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 131796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 131896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 13190ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 13200ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 132196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 13220ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 13230ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 132496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 132596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 132696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 132796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 132896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 132996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 133096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 133196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 133296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 133396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1334bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1335bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1336db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 133796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 133896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 133996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 134096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 134196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 13420ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1343db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 13440ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 134596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 134696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 1347f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec: 1348f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * 1349f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * "The second and third expressions must be the same type, but can 1350f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * be of any type other than an array." 1351f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick */ 1352f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick if ((state->language_version <= 110) && type->is_array()) { 1353f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 1354f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick "operator must not be arrays."); 1355f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick error_emitted = true; 1356f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick } 1357f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick 13587825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 13597825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 13607825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 13617825d3d15710fdfcfc503754862963aac8065480Ian Romanick 13627825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 13637825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 13647825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 13657825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 13667825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 13677e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *const tmp = 13687e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); 13690b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 13700ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13711660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 13727825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 13730ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13747825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 13751660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 13761660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 13777825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 13781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 13797825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 13800ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13817825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 13821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 13831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 13847825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 13851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 13867825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 13870ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 13881660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 13897825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1390251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 139196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1392a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1393a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 139476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 139576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 139676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 13971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 139876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 13991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 140076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1401a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 140276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1403768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 14041660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 14051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 140676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 14073e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 14088273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 140976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 141076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 141176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 141276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 141376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1416de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1417de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1418de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 14191660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1420de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 14211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1422de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1423de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1424de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1425a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1426de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1427768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 14281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 14291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1430de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1431de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1432de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1433de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 14348273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL)); 1435de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 14363e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 14378273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 1438de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1439de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1440de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1441de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1442a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1443de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1445a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 144618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1447a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 145027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 145127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 145227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 145327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 145427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 145527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 145627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 145727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1458a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1459b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 14601660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1461b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1462b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1463b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1464b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1465b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 146627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 146727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 146827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 146927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 147063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 147163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 147263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 147327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 147463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 147563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 147627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 147727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 147827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 147927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 148027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 148127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 148227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 148327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 148427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 148527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 148627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 148727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 148827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 148927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 149027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 149127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 149227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 149327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 149427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 149527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 149627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 149763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 149863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 149963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 150063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 150163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 150263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 150363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 150463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 150563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 150663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 150727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 150827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 150927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 151027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 151127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 151227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 151327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 151427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 151527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 151663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 151763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 151863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 151963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 152063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 152163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 152263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 152363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 152463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 152563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 152663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 152763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 152863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 152927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 153027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 153163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 153263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 153363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 153463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 153563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 153663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 153763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 153827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 153927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1540b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 154163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1542a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1543a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1544a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1545a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1546a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1547a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1548a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 154963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 155063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 155163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 15522b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke } else if (array->type->array_size() == 0) { 15532b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke _mesa_glsl_error(&loc, state, "unsized array index must be constant"); 1554a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } else { 1555a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt if (array->type->is_array()) { 15565226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius /* whole_variable_referenced can return NULL if the array is a 15575226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * member of a structure. In this case it is safe to not update 15585226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * the max_array_access field because it is never used for fields 15595226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * of structures. 15605226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius */ 1561a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt ir_variable *v = array->whole_variable_referenced(); 15625226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius if (v != NULL) 15635226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius v->max_array_access = array->type->array_size(); 1564a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } 156527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 156627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1567e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick /* From page 23 (29 of the PDF) of the GLSL 1.30 spec: 1568e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * 1569f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * "Samplers aggregated into arrays within a shader (using square 1570f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * brackets [ ]) can only be indexed with integral constant 1571f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace * expressions [...]." 1572e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * 1573e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * This restriction was added in GLSL 1.30. Shaders using earlier version 1574e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * of the language should not be rejected by the compiler front-end for 1575e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * using this construct. This allows useful things such as using a loop 1576e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * counter as the index to an array of samplers. If the loop in unrolled, 1577e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick * the code should compile correctly. Instead, emit a warning. 1578f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace */ 1579f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace if (array->type->is_array() && 1580f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace array->type->element_type()->is_sampler() && 1581f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace const_index == NULL) { 1582f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace 1583e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick if (state->language_version == 100) { 1584e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_warning(&loc, state, 1585e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1586e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is optional in GLSL ES 1.00"); 1587e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } else if (state->language_version < 130) { 1588e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_warning(&loc, state, 1589e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1590e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is forbidden in GLSL 1.30 and " 1591e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "later"); 1592e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } else { 1593e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick _mesa_glsl_error(&loc, state, 1594e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "sampler arrays indexed with non-constant " 1595e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "expressions is forbidden in GLSL 1.30 and " 1596e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick "later"); 1597e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick error_emitted = true; 1598e942f328365309a1d8240cfe8eb5d88391015f37Ian Romanick } 1599f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace } 1600f0f2ec4d8a50c79c2943ac95eb790fb734d88980Chad Versace 160127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 160227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 160327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 160427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1605a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 160627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1607a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1608a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 16097cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 16107cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1611a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16127cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1613a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1614a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1617a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1619a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16208bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 16218bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1626bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->used = true; 1627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 162971d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 163018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 16380471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 16391660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 16430471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 16441660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1645a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1646a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 16480471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 16491660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1651a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 16530471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 16541660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1655a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1656a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1659a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1660a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1661304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1663a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1665a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16682b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1669304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1673a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1674a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1675a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1677a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1680cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 168171d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1683a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1686a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1687fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 16880044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 168918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1690a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1691a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1693a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1694a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1695a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1696a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1697a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1698a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1699a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 170018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 170118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1702a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1703a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1704a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1705a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1706a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1707a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1708a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1709fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 17100044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 171118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1712a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 171318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 17148bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17162b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1717304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1718a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 171918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 17208bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1721a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1722a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1723a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1724a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1726a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1727a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 172828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 1729d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunkeprocess_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size, 173028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 173128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 173228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 173328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 173428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 173528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 173628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 173728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 173828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 173928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 174028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 174128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 174228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 174328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 174428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 174528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 174628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 174728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 174828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 174928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 175028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 175128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 175228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 175328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 175428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 175528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 175628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 175728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 175828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 175928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 176028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 176128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 176228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 176328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 176428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1765d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke } else if (state->es_shader) { 1766d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke /* Section 10.17 of the GLSL ES 1.00 specification states that unsized 1767d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke * array declarations have been removed from the language. 1768d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke */ 1769d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke _mesa_glsl_error(loc, state, "unsized array declarations are not " 1770d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke "allowed in GLSL ES 1.00."); 177128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 177228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1773f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick return glsl_type::get_array_instance(base, length); 177428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 177528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 177628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1777d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1778d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1779d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1780a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1781d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1782a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1783ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke type = state->symbols->get_type(this->type_name); 1784ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke *name = this->type_name; 1785a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1786ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke if (this->is_array) { 1787ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke YYLTYPE loc = this->get_location(); 1788ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke type = process_array_type(&loc, type, this->array_size, state); 1789a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1790a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1791a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1792a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1793a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1794a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1795a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1796a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1797768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var, 17982e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 17992e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1800a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1801bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick if (qual->flags.q.invariant) { 1802bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick if (var->used) { 1803bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick _mesa_glsl_error(loc, state, 1804bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "variable `%s' may not be redeclared " 1805bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "`invariant' after being used", 1806bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->name); 1807bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } else { 1808bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick var->invariant = 1; 1809bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } 1810bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } 1811a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1812a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1813e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.constant || qual->flags.q.attribute 1814e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || qual->flags.q.uniform 1815e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == fragment_shader))) 1816a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1817a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1818e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.centroid) 1819a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1820a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1821e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.attribute && state->target != vertex_shader) { 18222e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 18232e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 18242e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1825ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1826ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 18272e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 18282e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 182990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 183090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 183190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 183290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 183390b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 183490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 1835e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.varying) { 18360ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 18370ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 18380ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 18390ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 18400ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 18410ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 18420ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 18430ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 18440ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 18450ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 18460ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 18470ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 184890b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 184990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 18507e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick /* If there is no qualifier that changes the mode of the variable, leave 18517e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick * the setting alone. 18527e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick */ 1853e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.in && qual->flags.q.out) 1854a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1855e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.attribute || qual->flags.q.in 1856e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == fragment_shader))) 1857a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 1858e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.out 1859e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || (qual->flags.q.varying && (state->target == vertex_shader))) 1860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1861e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.uniform) 1862a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1863a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 186486b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (state->all_invariant && (state->current_function == NULL)) { 186586b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick switch (state->target) { 186686b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case vertex_shader: 186786b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (var->mode == ir_var_out) 186886b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 186986b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 187086b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case geometry_shader: 187186b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if ((var->mode == ir_var_in) || (var->mode == ir_var_out)) 187286b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 187386b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 187486b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick case fragment_shader: 187586b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick if (var->mode == ir_var_in) 187686b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick var->invariant = true; 187786b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick break; 187886b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick } 187986b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick } 188086b4398cd158024f6be9fa830554a11c2a7ebe0cIan Romanick 1881e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (qual->flags.q.flat) 1882a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1883e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick else if (qual->flags.q.noperspective) 1884a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1885a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1886a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 18879d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 1888e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick var->pixel_center_integer = qual->flags.q.pixel_center_integer; 1889e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick var->origin_upper_left = qual->flags.q.origin_upper_left; 1890e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer) 18918d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick && (strcmp(var->name, "gl_FragCoord") != 0)) { 1892e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick const char *const qual_string = (qual->flags.q.origin_upper_left) 18938d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick ? "origin_upper_left" : "pixel_center_integer"; 18948d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 18958d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick _mesa_glsl_error(loc, state, 18968d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "layout qualifier `%s' can only be applied to " 18978d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "fragment shader input `gl_FragCoord'", 18988d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick qual_string); 18998d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick } 19008d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 1901eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (qual->flags.q.explicit_location) { 1902eee68d3631813580a14fa51fda6f0c959279256cIan Romanick const bool global_scope = (state->current_function == NULL); 1903eee68d3631813580a14fa51fda6f0c959279256cIan Romanick bool fail = false; 1904eee68d3631813580a14fa51fda6f0c959279256cIan Romanick const char *string = ""; 1905eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1906eee68d3631813580a14fa51fda6f0c959279256cIan Romanick /* In the vertex shader only shader inputs can be given explicit 1907eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * locations. 1908eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * 1909eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * In the fragment shader only shader outputs can be given explicit 1910eee68d3631813580a14fa51fda6f0c959279256cIan Romanick * locations. 1911eee68d3631813580a14fa51fda6f0c959279256cIan Romanick */ 1912eee68d3631813580a14fa51fda6f0c959279256cIan Romanick switch (state->target) { 1913eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case vertex_shader: 1914eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (!global_scope || (var->mode != ir_var_in)) { 1915eee68d3631813580a14fa51fda6f0c959279256cIan Romanick fail = true; 1916eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string = "input"; 1917eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1918eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1919eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1920eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case geometry_shader: 1921eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_error(loc, state, 1922eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "geometry shader variables cannot be given " 1923eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "explicit locations\n"); 1924eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1925eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1926eee68d3631813580a14fa51fda6f0c959279256cIan Romanick case fragment_shader: 1927eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (!global_scope || (var->mode != ir_var_in)) { 1928eee68d3631813580a14fa51fda6f0c959279256cIan Romanick fail = true; 1929eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string = "output"; 1930eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1931eee68d3631813580a14fa51fda6f0c959279256cIan Romanick break; 1932a75da2c0e85eb6b8279ec895c3f74cc4aefc0257Kenneth Graunke }; 1933eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 1934eee68d3631813580a14fa51fda6f0c959279256cIan Romanick if (fail) { 1935eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_error(loc, state, 1936eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "only %s shader %s variables can be given an " 1937eee68d3631813580a14fa51fda6f0c959279256cIan Romanick "explicit location\n", 1938eee68d3631813580a14fa51fda6f0c959279256cIan Romanick _mesa_glsl_shader_target_name(state->target), 1939eee68d3631813580a14fa51fda6f0c959279256cIan Romanick string); 1940eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } else { 1941eee68d3631813580a14fa51fda6f0c959279256cIan Romanick var->explicit_location = true; 194268a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick 194368a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick /* This bit of silliness is needed because invalid explicit locations 194468a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * are supposed to be flagged during linking. Small negative values 194568a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias 194668a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS). 194768a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * The linker needs to be able to differentiate these cases. This 194868a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick * ensures that negative values stay negative. 194968a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick */ 195068a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick if (qual->location >= 0) { 195168a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick var->location = (state->target == vertex_shader) 195268a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick ? (qual->location + VERT_ATTRIB_GENERIC0) 195368a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick : (qual->location + FRAG_RESULT_DATA0); 195468a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick } else { 195568a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick var->location = qual->location; 195668a4fc9d5a9dd3b61472451d659275531253b67dIan Romanick } 1957eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1958eee68d3631813580a14fa51fda6f0c959279256cIan Romanick } 1959eee68d3631813580a14fa51fda6f0c959279256cIan Romanick 19604bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Does the declaration use the 'layout' keyword? 19614bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19624bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool uses_layout = qual->flags.q.pixel_center_integer 19634bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.origin_upper_left 19644bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.explicit_location; 19654bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 19664bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Does the declaration use the deprecated 'attribute' or 'varying' 19674bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * keywords? 19684bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19694bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool uses_deprecated_qualifier = qual->flags.q.attribute 19704bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick || qual->flags.q.varying; 19714bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 19724bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick /* Is the 'layout' keyword used with parameters that allow relaxed checking. 19734bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * Many implementations of GL_ARB_fragment_coord_conventions_enable and some 19744bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * implementations (only Mesa?) GL_ARB_explicit_attrib_location_enable 19754bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * allowed the layout qualifier to be used with 'varying' and 'attribute'. 19764bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * These extensions and all following extensions that add the 'layout' 19774bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * keyword have been modified to require the use of 'in' or 'out'. 19784bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19794bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * The following extension do not allow the deprecated keywords: 19804bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19814bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_AMD_conservative_depth 19824bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_gpu_shader5 19834bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_separate_shader_objects 19844bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_tesselation_shader 19854bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_transform_feedback3 19864bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * GL_ARB_uniform_buffer_object 19874bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * 19884bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * It is unknown whether GL_EXT_shader_image_load_store or GL_NV_gpu_shader5 19894bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick * allow layout with the deprecated keywords. 19904bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick */ 19914bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick const bool relaxed_layout_qualifier_checking = 19924bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick state->ARB_fragment_coord_conventions_enable; 19934bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 19944bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick if (uses_layout && uses_deprecated_qualifier) { 19954bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick if (relaxed_layout_qualifier_checking) { 19964bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick _mesa_glsl_warning(loc, state, 19974bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`layout' qualifier may not be used with " 19984bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`attribute' or `varying'"); 19994bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } else { 20004bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick _mesa_glsl_error(loc, state, 20014bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`layout' qualifier may not be used with " 20024bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick "`attribute' or `varying'"); 20034bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } 20044bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick } 20054bcff0c19091c7df2b2e0bafe58addb5bae28f1aIan Romanick 200610eaa8bcbce1cd6d2e120e913f7abafde9675215Kenneth Graunke if (var->type->is_array() && state->language_version != 110) { 20079d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 20089d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 2009a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2010a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2011a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2012fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 20130044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 201418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 2015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2016953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 2017a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 2018a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 20198558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 2020c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 2021a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20226f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 20236f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20246f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 20256f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 20266f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 20276f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20286f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 20296f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 20306f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 20316f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 20326f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 20336f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 20346f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 20356f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20366f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 20376f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20386f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 20396f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 20406f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20416f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20426f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 20436f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 20446f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 20456f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 20466f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20476f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 20486f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 20496f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 20506f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20516f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 20526f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 20536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 20546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 20556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 20576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 20586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 20596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 20606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 20616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 20626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 2063bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick } else if (earlier->used) { 2064bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick _mesa_glsl_error(& loc, state, 2065bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "variable `%s' may not be redeclared " 2066bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick "`invariant' after being used", 2067bd33055ef4b6dd18d6247ff7d9e47496ff4acc51Ian Romanick earlier->name); 20686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 20696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 20706f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20716f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 20746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 20756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 20766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 20776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 20796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 20806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 20813455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 20823455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 20833455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 20843455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 20853455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 2086d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 2087304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 20886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 20896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 20906f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 2091c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 2092c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 20936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 2094c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 2095c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 2096c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 2097c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 2098a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20992b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 2100a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 2101768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var; 2102a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2103a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 2104a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 2105a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2106a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2107cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 2108a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 2109a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2110a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 2111a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 2112a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2113a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2114a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 2115a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 2116a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2117a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 2118a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2119a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2120a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 2121d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke var_type = process_array_type(&loc, decl_type, decl->array_size, 2122d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke state); 2123a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2124a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 2125a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2126a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21277e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); 2128a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21293f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 21303f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 21313f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 21323f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 21333f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 21343f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 21353f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 21363f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 213782c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick * This is relaxed in GLSL 1.30. It is also relaxed by any extension 213882c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick * that adds the 'layout' keyword. 21393f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 214082c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick if ((state->language_version < 130) 214182c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick && !state->ARB_explicit_attrib_location_enable 214282c4b4f88af97395a3d1b01e1998ec828cd5d305Ian Romanick && !state->ARB_fragment_coord_conventions_enable) { 2143e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.out) { 21443f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 21453f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 2146469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick "only valid for function parameters in %s.", 2147469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick decl->identifier, state->version_string); 21483f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 2149e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.in) { 21503f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 21513f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 2152469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick "only valid for function parameters in %s.", 2153469ea695bbbc984ebec26b2413ab70d450a283caIan Romanick decl->identifier, state->version_string); 21543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 21553f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 21563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 21573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 21582e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 21592e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 2160a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2161e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.invariant) { 2162046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt if ((state->target == vertex_shader) && !(var->mode == ir_var_out || 2163046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt var->mode == ir_var_inout)) { 2164046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 2165046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature outval 2166046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 21676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 21686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 21696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 2170046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt } else if ((state->target == fragment_shader) && 2171046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt !(var->mode == ir_var_in || var->mode == ir_var_inout)) { 2172046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 2173046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature inval 2174046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 21756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 21766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 21776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 21786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 21796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 21806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 2181e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 2182b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 2183e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 2184b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 2185e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 2186e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 2187e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 2188e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.attribute) { 2189b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 2190e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.uniform) { 2191b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 2192e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.varying) { 2193b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 2194e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.in) { 2195e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 2196e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 2197e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick } else if (this->type->qualifier.flags.q.out) { 2198e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 2199e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 2200b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 2201b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 2202b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 2203e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 2204b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 2205e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 2206e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 2207e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 2208e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 2209fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 2210fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 2211fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 2212fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 2213fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 2214fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 2215fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 2216fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 2217fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 2218fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 22192d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 22202d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 22212d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 22222d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 22232d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 22242d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 2225fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 2226fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 2227fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 2228fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 2229fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 2230fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 2231fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 2232fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 2233fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 2234fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 2235fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 2236fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 2237fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 2238fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 2239fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 2240fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 2241fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 2242fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 2243fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 2244fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 2245fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 2246fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 2247fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 2248fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 2249fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2250fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 22512d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 2252fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 2253fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 2254fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 2255fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 2256fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 2257fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2258fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2259fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 2260fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 226168d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace /* Integer vertex outputs must be qualified with 'flat'. 226268d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * 226368d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * From section 4.3.6 of the GLSL 1.30 spec: 226468d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * "If a vertex output is a signed or unsigned integer or integer 226568d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * vector, then it must be qualified with the interpolation qualifier 226668d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace * flat." 226768d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace */ 226868d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace if (state->language_version >= 130 226968d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && state->target == vertex_shader 227068d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && state->current_function == NULL 227168d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->type->is_integer() 227268d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->mode == ir_var_out 227368d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace && var->interpolation != ir_var_flat) { 227468d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 227568d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace _mesa_glsl_error(&loc, state, "If a vertex output is an integer, " 227668d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace "then it must be qualified with 'flat'"); 227768d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace } 227868d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 227968d06b1454aea30c492c7318ab4e8514df8f38fdChad Versace 2280605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace /* Interpolation qualifiers cannot be applied to 'centroid' and 2281605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * 'centroid varying'. 2282605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * 2283605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * From page 29 (page 35 of the PDF) of the GLSL 1.30 spec: 2284605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * "interpolation qualifiers may only precede the qualifiers in, 2285605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * centroid in, out, or centroid out in a declaration. They do not apply 2286605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace * to the deprecated storage qualifiers varying or centroid varying." 2287605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace */ 2288605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace if (state->language_version >= 130 2289605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace && this->type->qualifier.has_interpolation() 2290605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace && this->type->qualifier.flags.q.varying) { 2291605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2292605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace const char *i = this->type->qualifier.interpolation_string(); 2293605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace assert(i != NULL); 2294605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace const char *s; 2295605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace if (this->type->qualifier.flags.q.centroid) 2296605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace s = "centroid varying"; 2297605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace else 2298605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace s = "varying"; 2299605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2300605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace _mesa_glsl_error(&loc, state, 2301605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace "qualifier '%s' cannot be applied to the " 2302605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace "deprecated storage qualifier '%s'", i, s); 2303605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace } 2304605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 2305605aacc67d73db0926e0046a90a07fcd93a2d613Chad Versace 23068faaa4a672c1062e486eda2525287715b554342dChad Versace /* Interpolation qualifiers can only apply to vertex shader outputs and 23078faaa4a672c1062e486eda2525287715b554342dChad Versace * fragment shader inputs. 23088faaa4a672c1062e486eda2525287715b554342dChad Versace * 23098faaa4a672c1062e486eda2525287715b554342dChad Versace * From page 29 (page 35 of the PDF) of the GLSL 1.30 spec: 23108faaa4a672c1062e486eda2525287715b554342dChad Versace * "Outputs from a vertex shader (out) and inputs to a fragment 23118faaa4a672c1062e486eda2525287715b554342dChad Versace * shader (in) can be further qualified with one or more of these 23128faaa4a672c1062e486eda2525287715b554342dChad Versace * interpolation qualifiers" 23138faaa4a672c1062e486eda2525287715b554342dChad Versace */ 23148faaa4a672c1062e486eda2525287715b554342dChad Versace if (state->language_version >= 130 23158faaa4a672c1062e486eda2525287715b554342dChad Versace && this->type->qualifier.has_interpolation()) { 23168faaa4a672c1062e486eda2525287715b554342dChad Versace 23178faaa4a672c1062e486eda2525287715b554342dChad Versace const char *i = this->type->qualifier.interpolation_string(); 23188faaa4a672c1062e486eda2525287715b554342dChad Versace assert(i != NULL); 23198faaa4a672c1062e486eda2525287715b554342dChad Versace 23208faaa4a672c1062e486eda2525287715b554342dChad Versace switch (state->target) { 23218faaa4a672c1062e486eda2525287715b554342dChad Versace case vertex_shader: 23228faaa4a672c1062e486eda2525287715b554342dChad Versace if (this->type->qualifier.flags.q.in) { 23238faaa4a672c1062e486eda2525287715b554342dChad Versace _mesa_glsl_error(&loc, state, 23248faaa4a672c1062e486eda2525287715b554342dChad Versace "qualifier '%s' cannot be applied to vertex " 23258faaa4a672c1062e486eda2525287715b554342dChad Versace "shader inputs", i); 23268faaa4a672c1062e486eda2525287715b554342dChad Versace } 23278faaa4a672c1062e486eda2525287715b554342dChad Versace break; 23288faaa4a672c1062e486eda2525287715b554342dChad Versace case fragment_shader: 23298faaa4a672c1062e486eda2525287715b554342dChad Versace if (this->type->qualifier.flags.q.out) { 23308faaa4a672c1062e486eda2525287715b554342dChad Versace _mesa_glsl_error(&loc, state, 23318faaa4a672c1062e486eda2525287715b554342dChad Versace "qualifier '%s' cannot be applied to fragment " 23328faaa4a672c1062e486eda2525287715b554342dChad Versace "shader outputs", i); 23338faaa4a672c1062e486eda2525287715b554342dChad Versace } 23348faaa4a672c1062e486eda2525287715b554342dChad Versace break; 23358faaa4a672c1062e486eda2525287715b554342dChad Versace default: 23368faaa4a672c1062e486eda2525287715b554342dChad Versace assert(0); 23378faaa4a672c1062e486eda2525287715b554342dChad Versace } 23388faaa4a672c1062e486eda2525287715b554342dChad Versace } 23398faaa4a672c1062e486eda2525287715b554342dChad Versace 23408faaa4a672c1062e486eda2525287715b554342dChad Versace 23411eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace /* From section 4.3.4 of the GLSL 1.30 spec: 23421eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace * "It is an error to use centroid in in a vertex shader." 23431eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace */ 23441eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace if (state->language_version >= 130 23451eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && this->type->qualifier.flags.q.centroid 23461eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && this->type->qualifier.flags.q.in 23471eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace && state->target == vertex_shader) { 23481eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 23491eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace _mesa_glsl_error(&loc, state, 23501eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace "'centroid in' cannot be used in a vertex shader"); 23511eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace } 23521eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 23531eb0f17fa4aa548779cb7d8ffbd86de3523d6796Chad Versace 2354889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace /* Precision qualifiers exists only in GLSL versions 1.00 and >= 1.30. 2355889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace */ 2356889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace if (this->type->specifier->precision != ast_precision_none 2357889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace && state->language_version != 100 2358889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace && state->language_version < 130) { 2359889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2360889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace _mesa_glsl_error(&loc, state, 2361889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace "precision qualifiers are supported only in GLSL ES " 2362889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace "1.00, and GLSL 1.30 and later"); 2363889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace } 2364889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2365889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 236645e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace /* Precision qualifiers only apply to floating point and integer types. 2367889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * 2368889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * From section 4.5.2 of the GLSL 1.30 spec: 2369889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * "Any floating point or any integer declaration can have the type 2370889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * preceded by one of these precision qualifiers [...] Literal 2371889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * constants do not have precision qualifiers. Neither do Boolean 2372889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace * variables. 2373889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace */ 2374889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace if (this->type->specifier->precision != ast_precision_none 237545e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !var->type->is_float() 237645e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !var->type->is_integer() 237745e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && !(var->type->is_array() 237845e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace && (var->type->fields.array->is_float() 237945e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace || var->type->fields.array->is_integer()))) { 2380889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2381889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace _mesa_glsl_error(&loc, state, 238245e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace "precision qualifiers apply only to floating point " 238345e8e6c6b1b7f3bc00a578fa6809c9bc719c171aChad Versace "and integer types"); 2384889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace } 2385889e1a5b6c6602198d649ea5881e0010dec575e9Chad Versace 2386e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 2387e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 2388e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 2389e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 2390e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 2391e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 2392fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt exec_list initializer_instructions; 239366faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 239443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 239543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 239666faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 239766faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 239866faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 239966faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 240066faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 240166faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 240266faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 240366faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 240443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 240543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 240643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 240743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 240843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 240943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 241043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 241143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 241219360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 241343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 241443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 241543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 2416ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 241743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 241843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 241966faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 242066faec4895b7bb59a614087a200c05157191b4aeIan Romanick 24211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 2422fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions, 2423e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 242419360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 2425ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 2426307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 242766faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 2428e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant 2429e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick || this->type->qualifier.flags.q.uniform) { 2430e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); 2431e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke if (new_rhs != NULL) { 2432e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs = new_rhs; 2433e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt 2434e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 2435e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (!constant_value) { 2436e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt _mesa_glsl_error(& initializer_loc, state, 2437e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "initializer of %s variable `%s' must be a " 2438e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "constant expression", 2439e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick (this->type->qualifier.flags.q.constant) 2440e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ? "const" : "uniform", 2441e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt decl->identifier); 2442e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 2443e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 2444e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 2445e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2446e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } else { 2447e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt rhs = constant_value; 2448e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = constant_value; 2449e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2450e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } else { 2451e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke _mesa_glsl_error(&initializer_loc, state, 2452e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "initializer of type %s cannot be assigned to " 2453e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "variable of type %s", 2454e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs->type->name, var->type->name); 2455e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 2456e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 2457e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 2458e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 2459307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 2460307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 246166faec4895b7bb59a614087a200c05157191b4aeIan Romanick 2462307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 2463ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 2464e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant) 2465ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 2466ce030884064046925a655413097dd8257e9392ddIan Romanick 2467d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick /* Never emit code to initialize a uniform. 2468d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick */ 2469d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick const glsl_type *initializer_type; 2470d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick if (!this->type->qualifier.flags.q.uniform) { 2471d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick result = do_assignment(&initializer_instructions, state, 2472d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick lhs, rhs, 2473d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick this->get_location()); 2474d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick initializer_type = result->type; 2475d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick } else 2476d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick initializer_type = rhs->type; 2477d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick 2478b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick /* If the declared variable is an unsized array, it must inherrit 2479b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * its full type from the initializer. A declaration such as 2480b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2481b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * uniform float a[] = float[](1.0, 2.0, 3.0, 3.0); 2482b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2483b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * becomes 2484b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2485b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * uniform float a[4] = float[](1.0, 2.0, 3.0, 3.0); 2486b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2487b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * The assignment generated in the if-statement (below) will also 2488b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * automatically handle this case for non-uniforms. 2489b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * 2490b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * If the declared variable is not an array, the types must 2491b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick * already match exactly. As a result, the type assignment 2492d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * here can be done unconditionally. For non-uniforms the call 2493d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * to do_assignment can change the type of the initializer (via 2494d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * the implicit conversion rules). For uniforms the initializer 2495d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * must be a constant expression, and the type of that expression 2496d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick * was validated above. 2497b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick */ 2498d7f27e2e76eac9bc2ee0fa36f52542fdcb9563ddIan Romanick var->type = initializer_type; 2499b0fc5103cbc9116806a9888f747baed4b8166246Ian Romanick 2500ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 250166faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 250266faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 250317d86f4371da413176ba365ca26a58bac172d365Ian Romanick 25040ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 25050ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 25060ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 25070ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 25080ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 25090ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 2510e24d35a5b59ca1e75b69a32db6294787378a963fIan Romanick if (this->type->qualifier.flags.q.constant && decl->initializer == NULL) { 25110ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 25120ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 25130ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 25140ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 25155d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Check if this declaration is actually a re-declaration, either to 25165d25746640ee27882b69a962459727cf924443dbKenneth Graunke * resize an array or add qualifiers to an existing variable. 25175466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 2518a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * This is allowed for variables in the current scope, or when at 2519a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * global scope (for built-ins in the implicit outer scope). 25205466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 25215d25746640ee27882b69a962459727cf924443dbKenneth Graunke ir_variable *earlier = state->symbols->get_variable(decl->identifier); 2522a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke if (earlier != NULL && (state->current_function == NULL || 2523a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke state->symbols->name_declared_this_scope(decl->identifier))) { 25245466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25255d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 25265d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 25275d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "It is legal to declare an array without a size and then 25285d25746640ee27882b69a962459727cf924443dbKenneth Graunke * later re-declare the same name as an array of the same 25295d25746640ee27882b69a962459727cf924443dbKenneth Graunke * type and specify a size." 25305d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 25315d25746640ee27882b69a962459727cf924443dbKenneth Graunke if ((earlier->type->array_size() == 0) 25325466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 25335466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 25345466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 25355466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 25365466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 25375466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 25385466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 2539cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 2540cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 2541cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 2542cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 2543cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 2544127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 2545cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 2546127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 2547cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 2548cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 2549cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 2550cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 2551127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 255212873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 25535466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 25545466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25555466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 25565466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 25575466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 25585466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 25595466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25605466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 25615466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 25625466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 25636e006273840282e06a08655553821ef8176b2d9cChad Versace } else if (state->ARB_fragment_coord_conventions_enable 25645d25746640ee27882b69a962459727cf924443dbKenneth Graunke && strcmp(var->name, "gl_FragCoord") == 0 25655d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->type == var->type 25665d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->mode == var->mode) { 25674a962170d7cf4243d6ae156fca20a6167388925dEric Anholt /* Allow redeclaration of gl_FragCoord for ARB_fcc layout 25684a962170d7cf4243d6ae156fca20a6167388925dEric Anholt * qualifiers. 25694a962170d7cf4243d6ae156fca20a6167388925dEric Anholt */ 25704a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->origin_upper_left = var->origin_upper_left; 25714a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->pixel_center_integer = var->pixel_center_integer; 2572b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace 2573b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace /* According to section 4.3.7 of the GLSL 1.30 spec, 2574b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * the following built-in varaibles can be redeclared with an 2575b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * interpolation qualifier: 2576b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_FrontColor 2577b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_BackColor 2578b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_FrontSecondaryColor 2579b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_BackSecondaryColor 2580b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_Color 2581b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace * * gl_SecondaryColor 2582b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace */ 2583b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace } else if (state->language_version >= 130 2584b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && (strcmp(var->name, "gl_FrontColor") == 0 2585b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_BackColor") == 0 2586b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_FrontSecondaryColor") == 0 2587b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_BackSecondaryColor") == 0 2588b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_Color") == 0 2589b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace || strcmp(var->name, "gl_SecondaryColor") == 0) 2590b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && earlier->type == var->type 2591b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace && earlier->mode == var->mode) { 2592b84e3f570f4b5aba1dd96760e090ae976d0e1cbaChad Versace earlier->interpolation = var->interpolation; 25935466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 25945466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 25955d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier); 25965466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 25975466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 25985466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 25995466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 26005466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 26015d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* By now, we know it's a new variable declaration (we didn't hit the 26025d25746640ee27882b69a962459727cf924443dbKenneth Graunke * above "continue"). 26035d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26045d25746640ee27882b69a962459727cf924443dbKenneth Graunke * From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 26055466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 26065466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 26075466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 26085466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 26095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 2610de3b40d8cdc42cc1cd71dd65c90d6d569d922fc6Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) 26115466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 26125466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 26135466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 26145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 26155d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Add the variable to the symbol table. Note that the initializer's 26165d25746640ee27882b69a962459727cf924443dbKenneth Graunke * IR was already processed earlier (though it hasn't been emitted yet), 26175d25746640ee27882b69a962459727cf924443dbKenneth Graunke * without the variable in scope. 26185d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26195d25746640ee27882b69a962459727cf924443dbKenneth Graunke * This differs from most C-like languages, but it follows the GLSL 26205d25746640ee27882b69a962459727cf924443dbKenneth Graunke * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 26215d25746640ee27882b69a962459727cf924443dbKenneth Graunke * spec: 26225d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 26235d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "Within a declaration, the scope of a name starts immediately 26245d25746640ee27882b69a962459727cf924443dbKenneth Graunke * after the initializer if present or immediately after the name 26255d25746640ee27882b69a962459727cf924443dbKenneth Graunke * being declared if not." 26265d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 2627001eee52d461233b1e1d6ed3577965e9bcb209e8Eric Anholt if (!state->symbols->add_variable(var)) { 26285d25746640ee27882b69a962459727cf924443dbKenneth Graunke YYLTYPE loc = this->get_location(); 26295d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "name `%s' already taken in the " 26305d25746640ee27882b69a962459727cf924443dbKenneth Graunke "current scope", decl->identifier); 26315d25746640ee27882b69a962459727cf924443dbKenneth Graunke continue; 26325d25746640ee27882b69a962459727cf924443dbKenneth Graunke } 26335d25746640ee27882b69a962459727cf924443dbKenneth Graunke 26348048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt /* Push the variable declaration to the top. It means that all 26358048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * the variable declarations will appear in a funny 26368048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * last-to-first order, but otherwise we run into trouble if a 26378048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is prototyped, a global var is decled, then the 26388048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is defined with usage of the global var. See 26398048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * glslparsertest's CorrectModule.frag. 26408048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt */ 26418048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt instructions->push_head(var); 2642fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt instructions->append_list(&initializer_instructions); 2643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 26458558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 26468558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 26478558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 26488558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 26498558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 26508558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 26518558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 26528558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 26538558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 2654a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 26558558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 2656a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2659fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 26600044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 266118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 2662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2663953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 2664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 2665a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 26662e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 2667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2668d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 2669a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 2671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 2672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2673a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 267418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 2675a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2677a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 267818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 2679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2680a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 26810471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 2682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2683a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2684068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 2685068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2686068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 2687068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 2688068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 2689068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 2690068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 2691068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2692068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 2693068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 2694068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 2695068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 2696cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 2697cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 2698cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2699cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2700cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2701cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2702068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2703cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2704068c80cfe0a280490353b6b007165d717c672eedEric Anholt 270545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 270645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 270745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 270845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 270945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2710e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke /* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...) 2711e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke * call already handled the "vec4[..] foo" case. 2712e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke */ 2713e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (this->is_array) { 2714d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke type = process_array_type(&loc, type, this->array_size, state); 2715e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2716e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2717e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (type->array_size() == 0) { 2718e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke _mesa_glsl_error(&loc, state, "arrays passed as parameters must have " 2719e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke "a declared size."); 2720e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke type = glsl_type::error_type; 2721e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2722e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2723cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 27247e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); 2725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2726cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2727cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2728cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 27292e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2730a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27310044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2732a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2733a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2734a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2735a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2736a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2737a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2738a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 273945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2740304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 274145d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 274245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 274345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2744a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2745cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2746cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2747a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27482b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 274945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2750068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2751cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2752cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2753cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2754cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2755cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2756cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2757cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2758cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2759cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2760cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2761cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2762cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2763a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2764a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2765a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2766a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 27676fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunkevoid 27686fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunkeemit_function(_mesa_glsl_parse_state *state, exec_list *instructions, 27696fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke ir_function *f) 27706fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke{ 27716fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke /* Emit the new function header */ 27726fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke if (state->current_function == NULL) { 27736fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke instructions->push_tail(f); 27746fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke } else { 27756fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke /* IR invariants disallow function declarations or definitions nested 27766fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * within other function definitions. Insert the new ir_function 27776fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * block in the instruction sequence before the ir_function block 27786fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke * containing the current ir_function_signature. 27796fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke */ 27806fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke ir_function *const curr = 27816fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke const_cast<ir_function *>(state->current_function->function()); 27826fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 27836fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke curr->insert_before(f); 27846fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke } 27856fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke} 27866fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 27876fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke 2788fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 278992318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 279092318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2791a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2792953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 279318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 279492318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 279592318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2796a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2797ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2798a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 279963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick /* From page 21 (page 27 of the PDF) of the GLSL 1.20 spec, 280063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 280163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "Function declarations (prototypes) cannot occur inside of functions; 280263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * they must be at global scope, or for the built-in functions, outside 280363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * the global scope." 280463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 280563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * From page 27 (page 33 of the PDF) of the GLSL ES 1.00.16 spec, 280663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 280763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "User defined functions may only be defined within the global scope." 280863b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 280963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * Note that this language does not appear in GLSL 1.10. 281063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick */ 281163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick if ((state->current_function != NULL) && (state->language_version != 110)) { 281263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick YYLTYPE loc = this->get_location(); 281363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick _mesa_glsl_error(&loc, state, 281463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "declaration of function `%s' not allowed within " 281563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "function body", name); 281663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick } 281763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick 2818edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 2819edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * 2820edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * "Identifiers starting with "gl_" are reserved for use by 2821edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * OpenGL, and may not be declared in a shader as either a 2822edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * variable or a function." 2823edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke */ 2824edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke if (strncmp(name, "gl_", 3) == 0) { 2825edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke YYLTYPE loc = this->get_location(); 2826edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke _mesa_glsl_error(&loc, state, 2827edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke "identifier `%s' uses reserved `gl_' prefix", name); 2828edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke } 2829edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke 2830a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2831a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2832a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2833a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 283445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 283545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 283645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2837a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2838e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2839e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 284092318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2841e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 284276e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt if (!return_type) { 284376e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt YYLTYPE loc = this->get_location(); 284476e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt _mesa_glsl_error(&loc, state, 284576e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt "function `%s' has undeclared return type `%s'", 284676e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt name, return_type_name); 284776e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt return_type = glsl_type::error_type; 284876e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt } 2849e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2850ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2851ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2852ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2853ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2854ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2855ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2856ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2857ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2858ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2859a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2861a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2862a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2863e466b182bbf21f62fe6542091f4af3275555db80Ian Romanick f = state->symbols->get_function(name); 286481f03393982c29f8f4165b5629c8e8fb708b97a3Kenneth Graunke if (f != NULL && (state->es_shader || f->has_user_signature())) { 2865202604e8160157e4e80b3458175e0170d168e557Ian Romanick sig = f->exact_matching_signature(&hir_parameters); 28660d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 28670d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 28680d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 28690d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2870abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 28710d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 28720d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 28730d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 28741e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 28750d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 28760d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 287760be7626b829af7e1d07330b9a88468924ba350eEric Anholt 28780d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 28790d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 28800d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2881a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 28820d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 28830d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2884a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 28850d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 2886a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2887a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2888a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 28891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 2890e8f5ebf313da3ce33ccbbcf9b72946853035fbddEric Anholt if (!state->symbols->add_function(f)) { 2891e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke /* This function name shadows a non-function use of the same name. */ 2892e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke YYLTYPE loc = this->get_location(); 2893e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke 2894e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke _mesa_glsl_error(&loc, state, "function name `%s' conflicts with " 2895e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke "non-function", name); 2896e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke return NULL; 2897e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke } 28989fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 28996fae1e4c4d33769e2f255d50907b5aa0ab80edd4Kenneth Graunke emit_function(state, instructions, f); 2900a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2901a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2902ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2903ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 290425711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2905ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2906ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2907ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2908ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2909174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 291092318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2911174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2912174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2913174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2914174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2915ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2916a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2917a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2918a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 291992318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 29201660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 292192318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2922a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2923a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2924bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 292592318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 292692318a947958892497722772b03c643ebc943294Ian Romanick 292792318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 292892318a947958892497722772b03c643ebc943294Ian Romanick */ 292992318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 293092318a947958892497722772b03c643ebc943294Ian Romanick} 293192318a947958892497722772b03c643ebc943294Ian Romanick 293292318a947958892497722772b03c643ebc943294Ian Romanick 293392318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 293492318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 293592318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 293692318a947958892497722772b03c643ebc943294Ian Romanick{ 293792318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 293892318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2939e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 294092318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2941826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke if (signature == NULL) 2942826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke return NULL; 2943a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 294441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 294541ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 29466de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 294741ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2948e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2949e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2950a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 29518bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2952e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2953fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2954e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2955fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29573359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 29583359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 29593359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 29603359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 29613359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 29623359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 29633359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 29643359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 2965001eee52d461233b1e1d6ed3577965e9bcb209e8Eric Anholt state->symbols->add_variable(var); 29663359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2967a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2968a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29699fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2970894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 29719fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29738bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 297541ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 297641ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 29786de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 29796de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 29806de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 29816de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 29826de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 29836de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 29846de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 29856de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2986a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2987a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2988a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2989a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 299016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 299116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2992fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 299316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 299416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 299516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 2996953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 299716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2998c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2999c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 300016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 3001aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 300216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 300316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 3004ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 3005ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 3006ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 3007ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 3008ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 3009ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 3010ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 3011f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 3012ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 301316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3014b4cdba687c098eea2ecc61349a4ea02a8769909eChad Versace ir_rvalue *const ret = opt_return_value->hir(instructions, state); 301516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 301616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 301718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 301818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 301918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 302018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 302118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 302218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 302318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 302418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 302518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 302618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 302718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 302816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 30291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 303016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 3031aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 3032aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 3033aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 3034aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 3035aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 3036aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 3037aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 3038f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 3039aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 30401660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 304116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 304216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 30436de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 304416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 3045c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 304616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 304716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 3048c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 3049b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 3050b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 3051b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 3052b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 3053b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 3054b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 305577049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 3056c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 3057c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 3058c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 3059c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 30604cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 30614cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 30624cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 30634cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 30644cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 30654cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 30664cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 30674cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 30684cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 30694cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 30704cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 30714cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 30724cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 30734cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 30744cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 30754cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 30762d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt /* Inline the for loop expression again, since we don't know 30772d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * where near the end of the loop body the normal copy of it 30782d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * is going to be placed. 30792d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt */ 30802d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt if (mode == ast_continue && 30812d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression) { 30822d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, 30832d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state); 30842d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt } 30852d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 30864cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 30874cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 30881660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 30891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 30901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 30914cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 30924cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 30934cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 30944cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 3095c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 3096b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 3097b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 309816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 309916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 310016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 310116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 31023c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31033c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31043c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 31053c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 31063c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 31073c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 3108953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 31091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 31103c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 31113c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31123c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 31133c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 31143c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 31153c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 31163c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 31173c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 31183c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 31193c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 31203c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 31213c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 31223c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 31233c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31243c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 31253c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 31263c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 31273c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 31293c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 3130665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (then_statement != NULL) { 3131665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 31324f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 3133665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 3134665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 31353c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 3136665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (else_statement != NULL) { 3137665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 31384f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 3139665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 3140665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 31413c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31423c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 31433c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 31443c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 31453c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 31463c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 31473c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 31489e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31499e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31508c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 31518c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 31528c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 31539e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 3154953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 31551660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 31569e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 31579e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 31589e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 31599e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31609e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 31619e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 31629e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 31639e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31649e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 31659e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 31669e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 31679e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 31689e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 31699e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 31709e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 31711660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 31721660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 31739e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31741660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 31759e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31769e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 31771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 31789e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 31799e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 31809e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 31819e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 31829e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 31838c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 31848c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 31858c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 31868c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 31878c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 31888c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 31898c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 3190953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 31911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 3192484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 31938c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 3194484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 31958c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 31968c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 31978c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 31988c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 31998c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32001660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 32018c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 32028c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32038c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 32048c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 32058c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 32062d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; 32072d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 32088c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 32092d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = this; 32108c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 32118c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 32128c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 32139e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32144f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 32154f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 32169e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32179e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 32189e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 32199e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 32208c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 32218c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 32228c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 3223484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 32249e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 32259e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 3226e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 3227e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 3228e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 32292d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = nesting_ast; 3230e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 32319e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 32329e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 32339e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 32349e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 32353455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 32363455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 32373455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 32383455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 32393455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 32403455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 324108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (!this->is_precision_statement && this->structure == NULL) 324208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 324308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 324408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace YYLTYPE loc = this->get_location(); 324508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 324608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->precision != ast_precision_none 324708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && state->language_version != 100 324808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && state->language_version < 130) { 324908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 325008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "precision qualifiers exist only in " 325108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "GLSL ES 1.00, and GLSL 1.30 and later"); 325208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 325308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 325408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->precision != ast_precision_none 325508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && this->structure != NULL) { 325608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 325708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "precision qualifiers do not apply to structures"); 325808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 325908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 326008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 326108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace /* If this is a precision statement, check that the type to which it is 326208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * applied is either float or int. 326308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * 326408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * From section 4.5.3 of the GLSL 1.30 spec: 326508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * "The precision statement 326608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * precision precision-qualifier type; 326708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * can be used to establish a default precision qualifier. The type 326808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * field can be either int or float [...]. Any other types or 326908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * qualifiers will result in an error. 327008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace */ 327108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->is_precision_statement) { 327208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace assert(this->precision != ast_precision_none); 327308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace assert(this->structure == NULL); /* The check for structures was 327408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace * performed above. */ 327508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->is_array) { 327608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 327708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "default precision statements do not apply to " 327808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "arrays"); 327908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 328008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 328108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace if (this->type_specifier != ast_float 328208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace && this->type_specifier != ast_int) { 328308a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace _mesa_glsl_error(&loc, state, 328408a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "default precision statements apply only to types " 328508a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace "float and int"); 328608a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 328708a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 328808a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 328908a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace /* FINISHME: Translate precision statements into IR. */ 329008a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace return NULL; 329108a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace } 329208a286c9cc8fecb081057e0f551c88a446c47b6fChad Versace 32933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 32943455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 329585ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 329685ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 32973455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 32983455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 32993455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33003455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 33013455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 33023455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 33033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 33043455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 33053455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33063455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 33073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 33083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 33093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 33103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 33112b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 33122b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 3313304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 33143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 33153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 33193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 33203455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 33213455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 33223455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 332321b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, 332421b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt decl_count); 33253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 33272b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 33282b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 33293455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 33303455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33313455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 33323455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 3333c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke /* Section 10.9 of the GLSL ES 1.00 specification states that 3334c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke * embedded structure definitions have been removed from the language. 3335c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke */ 3336c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke if (state->es_shader && decl_list->type->specifier->structure != NULL) { 3337c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke YYLTYPE loc = this->get_location(); 3338c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke _mesa_glsl_error(&loc, state, "Embedded structure definitions are " 3339c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke "not allowed in GLSL ES 1.00."); 3340c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke } 3341c98deb18d5836f75cf62562f9304e4d90e0ea920Kenneth Graunke 33423455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 33433455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 33443455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33452b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 33462b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 3347d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke const struct glsl_type *field_type = decl_type; 3348d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke if (decl->is_array) { 3349d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke YYLTYPE loc = decl->get_location(); 3350d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke field_type = process_array_type(&loc, decl_type, decl->array_size, 3351d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke state); 3352d8e34e29eb58c38ef60226156aab8f4a93b397b7Kenneth Graunke } 335373986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 335473986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 33553455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 33563455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 33573455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33583455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 33593455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33603455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 33613455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 336249e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 3363ca92ae2699c4aad21c0811b9a5562b9223816cafKenneth Graunke glsl_type::get_record_instance(fields, decl_count, this->name); 33641d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 3365ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 3366a789ca649cb143c0c5bf3209ff1bde398fbd777eIan Romanick if (!state->symbols->add_type(name, t)) { 3367ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 3368ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 3369a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 3370a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 3371a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 3372a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 3373a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 3374a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 3375a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 3376a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 3377a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 3378a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 3379ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 33803455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 33813455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 33823455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 33833455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 33843455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 3385