ast_to_hir.cpp revision 814c89abdbcd5b841b98746af921796df0362238
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); 63c22c40015db32b68b33c4944b9d94bf499135ec5Eric Anholt _mesa_glsl_initialize_functions(instructions, 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 367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickmodulus_result_type(const struct glsl_type *type_a, 37065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt const struct glsl_type *type_b, 37165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 372a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 373a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 374a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The operator modulus (%) operates on signed or unsigned integers or 375a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * integer vectors. The operand types must both be signed or both be 376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * unsigned." 377a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 37840176e249f72b6090204611873b19aed3da67c71Ian Romanick if (!type_a->is_integer() || !type_b->is_integer() 379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->base_type != type_b->base_type)) { 38065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3810471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 382a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 383a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 384a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operands cannot be vectors of differing size. If one operand is 385a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * a scalar and the other vector, then the scalar is applied component- 386a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise to the vector, resulting in the same type as the vector. If both 387a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * are vectors of the same size, the result is computed component-wise." 388a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 389a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector()) { 390a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (!type_b->is_vector() 391a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->vector_elements == type_b->vector_elements)) 392a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 393a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else 394a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 395a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 396a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operator modulus (%) is not defined for any other data types 397a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (non-integer types)." 398a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 39965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 4000471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 401a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 402a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 403a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 404a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 405bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickrelational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 40665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 407a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 408336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 409336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 4100150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick 411a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 412a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The relational operators greater than (>), less than (<), greater 413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * than or equal (>=), and less than or equal (<=) operate only on 414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * scalar integer and scalar floating-point expressions." 415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 416a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick if (!type_a->is_numeric() 417a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick || !type_b->is_numeric() 418cb36f8aaeeb09660843316270a781948f773d90bIan Romanick || !type_a->is_scalar() 41965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt || !type_b->is_scalar()) { 42065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 42165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to relational operators must be scalar and " 42265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "numeric"); 4230471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 42465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 425a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 426a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "Either the operands' types must match, or the conversions from 427a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Section 4.1.10 "Implicit Conversions" will be applied to the integer 428a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand, after which the types must match." 429a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4300150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 4310150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 43265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 43365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Could not implicitly convert operands to " 43465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "relational operator"); 4350150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick return glsl_type::error_type; 436a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 437336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 438336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 439a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 44065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (type_a->base_type != type_b->base_type) { 44165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "base type mismatch"); 4420471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 44365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 445a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The result is scalar Boolean." 446a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4470471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::bool_type; 448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 450a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 4510bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick/** 4520bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that a value can be assigned to a location with a specified type 4530bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4540bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that \c rhs can be assigned to some location. If the types are 4550bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * not an exact match but an automatic conversion is possible, \c rhs will be 4560bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * converted. 4570bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4580bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \return 4590bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. 4600bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Otherwise the actual RHS to be assigned will be returned. This may be 4610bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c rhs, or it may be \c rhs after some type conversion. 4620bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4630bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \note 4640bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * In addition to being used for assignments, this function is used to 4650bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * type-check return values. 4660bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 467fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 468336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholtvalidate_assignment(struct _mesa_glsl_parse_state *state, 469336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *lhs_type, ir_rvalue *rhs) 4700bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick{ 471336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *rhs_type = rhs->type; 4720bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4730bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If there is already some error in the RHS, just return it. Anything 4740bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * else will lead to an avalanche of error message back to the user. 4750bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4760bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type->is_error()) 4770bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4780bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4790bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If the types are identical, the assignment can trivially proceed. 4800bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4810bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type == lhs_type) 4820bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4830bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4840157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the array element types are the same and the size of the LHS is zero, 4850157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the assignment is okay. 4860157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * 4870157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * Note: Whole-array assignments are not permitted in GLSL 1.10, but this 4880157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is handled by ir_dereference::is_lvalue. 4890157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4900157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs_type->is_array() && rhs->type->is_array() 4910157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->element_type() == rhs->type->element_type()) 4920157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->array_size() == 0)) { 4930157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick return rhs; 4940157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 4950157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 496336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt /* Check for implicit conversion in GLSL 1.20 */ 497336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (apply_implicit_conversion(lhs_type, rhs, state)) { 498336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt rhs_type = rhs->type; 499336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (rhs_type == lhs_type) 500336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt return rhs; 501336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt } 502336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 5030bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return NULL; 5040bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick} 5050bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 50610a685218610e737e23d2d8a243ed6ff6613becdEric Anholtir_rvalue * 50710a685218610e737e23d2d8a243ed6ff6613becdEric Anholtdo_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, 50810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_rvalue *lhs, ir_rvalue *rhs, 50910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt YYLTYPE lhs_loc) 51010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt{ 511953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 51210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); 51310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 51410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!error_emitted) { 51510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!lhs->is_lvalue()) { 51610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 51710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 51810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 51910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 52010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 521336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 52210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 52310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 52410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 52510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 5260157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5270157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 5280157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 5290157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 5300157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 5310157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 5320157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 5330157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 5340157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5350157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 5360157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 53736ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 5380157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5390157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 5400157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 54163f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 54263f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 54363f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 54463f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 54563f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 54663f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 54763f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 548f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 5490157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 5509703ed05e684f4269cd8af27c94e9b6bf8781d85Eric Anholt d->type = var->type; 5510157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 55210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 55310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5542731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 5552731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 5562731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 5572731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5582731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 5592731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5602731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 5612731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 5622731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 5632731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 5647e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", 5657e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 566e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); 567ae805922b7e3cdaf3aee26c3b799fe3608669bbaEric Anholt instructions->push_tail(var); 568e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt instructions->push_tail(new(ctx) ir_assignment(deref_var, 5691660a2954797e056caba319c5d6c70b0d4be22feCarl Worth rhs, 5701660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 571e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var = new(ctx) ir_dereference_variable(var); 5722731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt 5738e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick if (!error_emitted) 5748e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); 57510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5761660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 57710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 5780bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 579de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 580959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 581de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 5821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 583de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 584de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5857e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", 5867e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 58743b5b03d67ce890e867c81d4a5cfc4871d711d43Eric Anholt instructions->push_tail(var); 588de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 589de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), 5911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth lvalue, NULL)); 592de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 593de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 594de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 595de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 596de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 597de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 599de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 600de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 601de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 602fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 6030044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 60418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 60518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 60618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 60718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 60818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 60918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 61018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 61118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 61218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 613fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 6140044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 61518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 617953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 619a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_equal, 634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_nequal, 635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 645a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 646a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 648a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 651a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 653a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 654a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 655a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 656a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 659de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 660de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 661de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 662de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 663a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 665a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 668a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 669a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 673fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 6741c325af4d6b907e0a47ab7f868a2a78f054f153fAras Pranckevicius ir_rvalue *op[3]; 6750471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 677a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 67918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 680a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 68118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 6826652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 68318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 68418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 68610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 68710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 68810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 68910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 690a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 6916652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 693a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 69418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 695a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 696c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth type = unary_arithmetic_result_type(op[0]->type, state, & loc); 697c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth 698c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth error_emitted = type->is_error(); 699a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 700a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 701a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 702a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 703a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 70418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 705a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 70665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 707a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 70865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 709a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7101660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7111660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 712a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 713a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 716a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 717a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 71818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 71918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 720a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 721bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 72218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 723a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 724a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7261660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7271660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 728a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 729a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 730a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 73118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 73218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 733a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 73465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 735a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 73618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 737a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7391660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 74065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 741a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 742a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 743a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 744a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 745183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-shift operators"); 746183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 747a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 748a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 749a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 750a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 751a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 752a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 75318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 75418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 755a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 75665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 757a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 758a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 759a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 760a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 761a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 762a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 763cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 764a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7651660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7661660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 76765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 768a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 769a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 770a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 771a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 7726e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 7736e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 7746e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7756e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 7766e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 7776e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 7786e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 7796e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 7806e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 7816e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 7826e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 7836e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 784bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 785bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 786212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 7876e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 7886e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 7896e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 790a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 791a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 792a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 793a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 794a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 7956e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 7966e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 7981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 7996e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 8006e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 8016e659caaa946339a2de3890a8bed091ccb65102aIan Romanick assert(result->type == glsl_type::bool_type); 802a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 803a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 804a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 805a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 806a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 8071eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 8081eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[1] = this->subexpressions[1]->hir(instructions, state); 8091eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8101eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (state->language_version < 130) { 8111eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30"); 8121eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8131eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8141eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8151eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (!op[0]->type->is_integer()) { 8161eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "LHS of `%s' must be an integer", 8171eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke operator_string(this->oper)); 8181eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8191eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8201eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8211eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (!op[1]->type->is_integer()) { 8221eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "RHS of `%s' must be an integer", 8231eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke operator_string(this->oper)); 8241eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8251eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8261eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8271eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (op[0]->type->base_type != op[1]->type->base_type) { 8281eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "operands of `%s' must have the same " 8291eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke "base type", operator_string(this->oper)); 8301eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8311eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8321eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8331eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (op[0]->type->is_vector() && op[1]->type->is_vector() 8341eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke && op[0]->type->vector_elements != op[1]->type->vector_elements) { 8351eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "operands of `%s' cannot be vectors of " 8361eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke "different sizes", operator_string(this->oper)); 8371eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8381eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8391eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8401eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke type = op[0]->type->is_scalar() ? op[1]->type : op[0]->type; 8411eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(operations[this->oper], type, 8421eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0], op[1]); 8431eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 8441eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke break; 8451eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 846a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 8471eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke op[0] = this->subexpressions[0]->hir(instructions, state); 8481eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8491eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (state->language_version < 130) { 8501eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30"); 8511eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8521eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8531eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8541eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke if (!op[0]->type->is_integer()) { 8551eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke _mesa_glsl_error(&loc, state, "operand of `~' must be an integer"); 8561eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke error_emitted = true; 8571eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke } 8581eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke 8591eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke type = op[0]->type; 8601eea96326fa652029e3898e104c715e5464f11e4Kenneth Graunke result = new(ctx) ir_expression(ir_unop_bit_not, type, op[0], NULL); 861a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 862a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 8634950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 864b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 865b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 866b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 867b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 868b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 869b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 870b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 871ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 872b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 873b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 87444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 87544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 87644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 87744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 87844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 87944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 88044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 88144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 88244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 88344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 88444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 88544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 88644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 88744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 88844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 88944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 89044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 89144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 89244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 89381d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 8947e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "and_tmp", 8957e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 89681d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(tmp); 89781d664f099a5fd5fac777480532fb4307d591451Ian Romanick 8981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 89944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 9004950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 9024950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 90444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 9054950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 90744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 90844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 90944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 91044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 911b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 9121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 91344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 9141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 91544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 9164950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9171660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 91844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 9191660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 92044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 9214950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9221660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 92344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 92444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9254950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 9264950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9274950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9284950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 9294950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 9304950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9314950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 9324950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 9334950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9344950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 9354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 9364950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 9374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9384950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 93944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 94044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 94144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 94244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 94344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 94444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 94544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 94644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 94744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 94844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 94944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 95044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 95144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 95244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 95344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 95444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 95544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 95644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 95744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 958dfd30ca6a95a7d95835dad78ffe1fba4d1f4ef69Kenneth Graunke ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 9597e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "or_tmp", 9607e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 9610b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 9624950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 96381d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_if *const stmt = new(ctx) ir_if(op[0]); 96481d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(stmt); 96581d664f099a5fd5fac777480532fb4307d591451Ian Romanick 966a0879b9dd438d78635f047cdd5ed4c72bc831b60Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state); 9674950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 96844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 96944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 9704950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 97144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 97244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 97344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 97444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9754950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9761660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 97744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 9781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 97944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 9804950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9811660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 98244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 9831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 98444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 9854950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9861660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 98744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 98844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9894950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 9904950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9914950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9924950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 9934950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 9944950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 9954950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9964950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 999ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1000a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1001a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1002a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 1003a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1004a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1005a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 1006a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 1007a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1008a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 1009a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 1010ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 1011a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 1012a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 10131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 10141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 1015ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 1016a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 1017a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 1018a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 1019a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 1020a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 1021a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 102218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 102318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 1024a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1025bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 102618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 1027a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 1028a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 10291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 10301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1031a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 10323e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 10338273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 103410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 103510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 103610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 1037a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1038a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 1039a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 1040a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 1041a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1042a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1043a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1044a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1045a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 104648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 104748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 104848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 104948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 105065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 105148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 105248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 105348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 1054768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 10551660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 10561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 105748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 10583e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 10598273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 106048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 106148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 106265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 106348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 106448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 1065a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1066a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 1067a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rs_assign: 1068183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1069183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement bit-shift assignment operators"); 1070183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1071251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1072a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1073a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 1074a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 1075a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_or_assign: 1076183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1077183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement logic assignment operators"); 1078183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1079251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1080a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 108196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 108296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 108396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 108496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 108596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 108696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 108796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 108896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 108996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 109096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 109196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 109296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 109396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 109496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 109596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 109696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 109796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 109896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 109996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 110096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 110196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 11020ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 11030ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 110496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 11050ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 11060ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 110796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 110896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 110996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 111096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 111196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 111296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 111396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 111496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 111596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 111696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1117bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1118bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1119db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 112096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 112196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 112296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 112396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 112496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 11250ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1126db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 11270ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 112896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 112996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 1130f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec: 1131f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * 1132f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * "The second and third expressions must be the same type, but can 1133f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick * be of any type other than an array." 1134f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick */ 1135f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick if ((state->language_version <= 110) && type->is_array()) { 1136f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 1137f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick "operator must not be arrays."); 1138f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick error_emitted = true; 1139f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick } 1140f09fabc448c0781f0cf9160565e1b0bab59a16e5Ian Romanick 11417825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 11427825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 11437825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 11447825d3d15710fdfcfc503754862963aac8065480Ian Romanick 11457825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 11467825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 11477825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 11487825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 11497825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 11507e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *const tmp = 11517e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); 11520b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 11530ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 11541660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 11557825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 11560ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 11577825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 11581660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 11591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 11607825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 11611660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 11627825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 11630ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 11647825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 11651660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 11661660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 11677825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 11681660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 11697825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 11700ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 11711660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 11727825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1173251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 117496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1175a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1176a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 117776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 117876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 117976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 11801660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 118176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 11821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 118376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1184a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 118576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1186768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 11871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11881660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 118976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 11903e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 11918273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 119276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 119376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 119476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 119576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 119676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1197a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1198a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1199de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1200de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1201de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 12021660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1203de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 12041660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1205de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1206de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1207de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1208a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1209de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1210768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 12111660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 12121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1213de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1214de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1215de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1216de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 12178273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL)); 1218de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 12193e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 12208273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 1221de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1222de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1223de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1224de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1225a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1226de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1227a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1228a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 122918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1230a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1231a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 123327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 123427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 123527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 123627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 123727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 123827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 123927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 124027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1241a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1242b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 12431660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1244b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1245b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1246b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1247b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1248b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 124927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 125027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 125127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 125227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 125363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 125463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 125563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 125627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 125763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 125863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 125927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 126027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 126127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 126227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 126327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 126427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 126527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 126627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 126727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 126827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 126927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 127027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 127127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 127227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 127327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 127427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 127527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 127627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 127727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 127827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 127927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 128063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 128163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 128263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 128363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 128463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 128563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 128663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 128763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 128863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 128963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 129027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 129127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 129227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 129327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 129427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 129527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 129627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 129727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 129827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 129963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 130063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 130163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 130263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 130363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 130463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 130563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 130663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 130763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 130863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 130963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 131063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 131163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 131227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 131327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 131463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 131563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 131663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 131763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 131863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 131963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 132063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 132127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 132227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1323b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 132463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1325a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1326a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1327a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1328a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1329a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1330a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1331a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 133263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 133363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 133463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 13352b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke } else if (array->type->array_size() == 0) { 13362b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke _mesa_glsl_error(&loc, state, "unsized array index must be constant"); 1337a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } else { 1338a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt if (array->type->is_array()) { 13395226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius /* whole_variable_referenced can return NULL if the array is a 13405226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * member of a structure. In this case it is safe to not update 13415226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * the max_array_access field because it is never used for fields 13425226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius * of structures. 13435226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius */ 1344a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt ir_variable *v = array->whole_variable_referenced(); 13455226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius if (v != NULL) 13465226f8c7b0025031e8540adc93ecfe0b36b8f90fAras Pranckevicius v->max_array_access = array->type->array_size(); 1347a721abfbd1724e83381b46fc670bb38fbde76f69Eric Anholt } 134827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 134927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 135027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 135127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 135227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 135327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1354a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 135527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 13587cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 13597cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 13617cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1362a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1364a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1365a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 13698bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 13708bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1371a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 13721660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1373a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1374a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1375a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 137771d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 137818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1380a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1381a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1382a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1383a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1384a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1385a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 13860471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 13871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1388a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1389a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1390a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 13910471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 13921660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1393a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1394a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1395a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 13960471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 13971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1398a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1399a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1400a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 14010471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 14021660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1403a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1404a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1405a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1406a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1407a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1408a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1409304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1410a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1411a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1412a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 14162b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1417304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1418a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1419a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1420a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1421a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1422a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1423a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1424a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1425a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1426a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1427a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1428cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 142971d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1430a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1431a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1433a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1434a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1435fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 14360044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 143718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1438a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1439a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1440a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1441a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1442a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1443a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1445a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1446a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1447a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 144818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 144918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1450a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1451a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1452a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1453a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1454a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1455a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1456a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1457fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 14580044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 145918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1460a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 146118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 14628bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1463a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 14642b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1465304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1466a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 146718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 14688bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1469a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1470a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1471a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1472a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1473a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1474a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1475a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 147628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 147728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickprocess_array_type(const glsl_type *base, ast_node *array_size, 147828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 147928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 148028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 148128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 148228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 148328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 148428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 148528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 148628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 148728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 148828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 148928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 149028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 149128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 149228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 149328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 149428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 149528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 149628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 149728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 149828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 149928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 150028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 150128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 150228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 150328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 150428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 150528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 150628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 150728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 150828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 150928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 151028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 151128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 151228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 151328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 151428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1515f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick return glsl_type::get_array_instance(base, length); 151628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 151728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 151828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1519d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1520d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1521d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1522a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1523d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1524a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if ((this->type_specifier == ast_struct) && (this->type_name == NULL)) { 1526a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle annonymous structures. */ 1527a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = NULL; 1528a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1529d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = state->symbols->get_type(this->type_name); 1530d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick *name = this->type_name; 1531a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1532d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick if (this->is_array) { 1533d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = process_array_type(type, this->array_size, state); 153428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1535a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1536a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1537a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1538a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1539a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1540a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1541a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1542a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1543768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var, 15442e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 15452e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1546a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1547a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->invariant) 1548a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->invariant = 1; 1549a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1550a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1551a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->constant || qual->attribute || qual->uniform 1552a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1553a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1554a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1555a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->centroid) 1556a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1557a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1558ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick if (qual->attribute && state->target != vertex_shader) { 15592e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 15602e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 15612e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1562ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1563ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 15642e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 15652e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 156690b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 156790b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 156890b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 156990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 157090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 157190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 15720ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (qual->varying) { 15730ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 15740ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 15750ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 15760ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 15770ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 15780ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 15790ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 15800ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 15810ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 15820ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 15830ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 15840ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 158590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 158690b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 15877e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick /* If there is no qualifier that changes the mode of the variable, leave 15887e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick * the setting alone. 15897e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick */ 1590a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->in && qual->out) 1591a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1592a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->attribute || qual->in 1593a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1594a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 15950b678234625fac67a89285ad2871dedc891fb1b1Ian Romanick else if (qual->out || (qual->varying && (state->target == vertex_shader))) 1596a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1597a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->uniform) 1598a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1599a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1600a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->flat) 1601a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1602a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->noperspective) 1603a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1604a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1605a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 16069d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 16074a962170d7cf4243d6ae156fca20a6167388925dEric Anholt var->pixel_center_integer = qual->pixel_center_integer; 16084a962170d7cf4243d6ae156fca20a6167388925dEric Anholt var->origin_upper_left = qual->origin_upper_left; 16098d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick if ((qual->origin_upper_left || qual->pixel_center_integer) 16108d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick && (strcmp(var->name, "gl_FragCoord") != 0)) { 16118d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick const char *const qual_string = (qual->origin_upper_left) 16128d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick ? "origin_upper_left" : "pixel_center_integer"; 16138d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 16148d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick _mesa_glsl_error(loc, state, 16158d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "layout qualifier `%s' can only be applied to " 16168d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "fragment shader input `gl_FragCoord'", 16178d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick qual_string); 16188d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick } 16198d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 16209d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick if (var->type->is_array() && (state->language_version >= 120)) { 16219d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 16229d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 1623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1626fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 16270044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 162818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1630953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 16338558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 1634c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16366f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 16376f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 16386f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 16396f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 16406f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 16416f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 16426f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 16436f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 16446f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 16456f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 16466f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 16476f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 16486f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 16496f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16506f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 16516f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16526f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 16536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 16546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 16576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 16586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 16596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 16606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 16626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 16636f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 16646f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16656f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 16666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 16676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 16686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 16696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16706f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 16716f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 16726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 16736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 16746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 16766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 16776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 16786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 16796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 16836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 16846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 16856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 16886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 16896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16903455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 16913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 16923455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 16933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 16943455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 1695d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 1696304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 16976f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 16986f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 16996f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 1700c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 1701c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 17026f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 1703c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 1704c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 1705c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1706c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1707a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17082b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 1709a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 1710768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var; 1711a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1712a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 1713a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 1714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1716cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 1717a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 1718a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1719a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 1720a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 1721a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1722a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1723a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 1724a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 1725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1726a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1727a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1728a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1729a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 173028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick var_type = process_array_type(decl_type, decl->array_size, state); 1731a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1732a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 1733a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1734a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17357e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); 1736a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17373f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 17383f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 17393f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 17403f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 17413f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 17423f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 17433f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 17443f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 17453f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * This is relaxed in GLSL 1.30. 17463f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 17473f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (state->language_version < 120) { 17483f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.out) { 17493f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 17503f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 17513f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 17523f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 17533f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 17543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.in) { 17553f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 17563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 17573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 17583f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 17593f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 17603f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 17613f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 17623f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 17632e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 17642e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 1765a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 17666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->type->qualifier.invariant) { 1767046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt if ((state->target == vertex_shader) && !(var->mode == ir_var_out || 1768046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt var->mode == ir_var_inout)) { 1769046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 1770046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature outval 1771046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 17726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 17736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 17746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 1775046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt } else if ((state->target == fragment_shader) && 1776046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt !(var->mode == ir_var_in || var->mode == ir_var_inout)) { 1777046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 1778046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature inval 1779046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 17806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 17816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 17826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 17836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 17846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 17856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 1786e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 1787b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 1788e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 1789b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1790e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 1791e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 1792e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 1793e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (this->type->qualifier.attribute) { 1794b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 1795b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.uniform) { 1796b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 1797b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.varying) { 1798b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 1799e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.in) { 1800e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 1801e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1802e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.out) { 1803e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 1804e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1805b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 1806b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1807b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 1808e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 1809b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 1810e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 1811e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 1812e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 1813e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 1814fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 1815fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 1816fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1817fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 1818fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1819fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 1820fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 1821fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 1822fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 1823fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 18242d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 18252d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 18262d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 18272d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 18282d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 18292d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 1830fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 1831fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1832fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 1833fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 1834fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 1835fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 1836fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 1837fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 1838fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1839fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 1840fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 1841fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1842fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 1843fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 1844fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 1845fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1846fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 1847fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 1848fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1849fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1850fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 1851fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 1852fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 1853fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1854fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1855fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 18562d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 1857fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 1858fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1859fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1860fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 1861fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1862fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1863fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1864fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1865fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1866e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 1867e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 1868e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 1869e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 1870e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 1871e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 1872fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt exec_list initializer_instructions; 187366faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 187443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 187543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 187666faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 187766faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 187866faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 187966faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 188066faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 188166faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 188266faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 188366faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 188443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 188543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 188643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 188743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 188843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 188943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 189043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 189143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 189219360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 189343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 189443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 189543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 1896ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 189743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 189843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 189966faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 190066faec4895b7bb59a614087a200c05157191b4aeIan Romanick 19011660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 1902fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions, 1903e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 190419360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 1905ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 1906307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 190766faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 1908ce030884064046925a655413097dd8257e9392ddIan Romanick if (this->type->qualifier.constant || this->type->qualifier.uniform) { 1909e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); 1910e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke if (new_rhs != NULL) { 1911e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs = new_rhs; 1912e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt 1913e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 1914e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (!constant_value) { 1915e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt _mesa_glsl_error(& initializer_loc, state, 1916e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "initializer of %s variable `%s' must be a " 1917e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt "constant expression", 1918e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt (this->type->qualifier.constant) 1919e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt ? "const" : "uniform", 1920e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt decl->identifier); 1921e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 1922e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 1923e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 1924e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 1925e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } else { 1926e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt rhs = constant_value; 1927e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = constant_value; 1928e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 1929e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } else { 1930e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke _mesa_glsl_error(&initializer_loc, state, 1931e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "initializer of type %s cannot be assigned to " 1932e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "variable of type %s", 1933e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs->type->name, var->type->name); 1934e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt if (var->type->is_numeric()) { 1935e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt /* Reduce cascading errors. */ 1936e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt var->constant_value = ir_constant::zero(ctx, var->type); 1937e11757bb896e3dadc54fb3d18adf4b71e3e883b3Eric Anholt } 1938307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 1939307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 194066faec4895b7bb59a614087a200c05157191b4aeIan Romanick 1941307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 1942ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 1943ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt if (this->type->qualifier.constant) 1944ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 1945ce030884064046925a655413097dd8257e9392ddIan Romanick 1946ce030884064046925a655413097dd8257e9392ddIan Romanick /* Never emit code to initialize a uniform. 1947ce030884064046925a655413097dd8257e9392ddIan Romanick */ 1948ce030884064046925a655413097dd8257e9392ddIan Romanick if (!this->type->qualifier.uniform) 1949fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt result = do_assignment(&initializer_instructions, state, 1950fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt lhs, rhs, 1951ce030884064046925a655413097dd8257e9392ddIan Romanick this->get_location()); 1952ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 195366faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 195466faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 195517d86f4371da413176ba365ca26a58bac172d365Ian Romanick 19560ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 19570ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 19580ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 19590ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 19600ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 19610ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 19620ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt if (this->type->qualifier.constant && decl->initializer == NULL) { 19630ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 19640ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 19650ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 19660ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 19675d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Check if this declaration is actually a re-declaration, either to 19685d25746640ee27882b69a962459727cf924443dbKenneth Graunke * resize an array or add qualifiers to an existing variable. 19695466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 1970a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * This is allowed for variables in the current scope, or when at 1971a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke * global scope (for built-ins in the implicit outer scope). 19725466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19735d25746640ee27882b69a962459727cf924443dbKenneth Graunke ir_variable *earlier = state->symbols->get_variable(decl->identifier); 1974a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke if (earlier != NULL && (state->current_function == NULL || 1975a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke state->symbols->name_declared_this_scope(decl->identifier))) { 19765466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19775d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 19785d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 19795d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "It is legal to declare an array without a size and then 19805d25746640ee27882b69a962459727cf924443dbKenneth Graunke * later re-declare the same name as an array of the same 19815d25746640ee27882b69a962459727cf924443dbKenneth Graunke * type and specify a size." 19825d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 19835d25746640ee27882b69a962459727cf924443dbKenneth Graunke if ((earlier->type->array_size() == 0) 19845466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 19855466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 19865466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 19875466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 19885466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 19895466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19905466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 1991cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 1992cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 1993cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 1994cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 1995cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 1996127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 1997cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 1998127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 1999cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 2000cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 2001cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 2002cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 2003127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 200412873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 20055466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 20065466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 20075466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 20085466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 20095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 20105466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 20115466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 20125466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 20135466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 20145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 20155d25746640ee27882b69a962459727cf924443dbKenneth Graunke } else if (state->extensions->ARB_fragment_coord_conventions 20165d25746640ee27882b69a962459727cf924443dbKenneth Graunke && strcmp(var->name, "gl_FragCoord") == 0 20175d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->type == var->type 20185d25746640ee27882b69a962459727cf924443dbKenneth Graunke && earlier->mode == var->mode) { 20194a962170d7cf4243d6ae156fca20a6167388925dEric Anholt /* Allow redeclaration of gl_FragCoord for ARB_fcc layout 20204a962170d7cf4243d6ae156fca20a6167388925dEric Anholt * qualifiers. 20214a962170d7cf4243d6ae156fca20a6167388925dEric Anholt */ 20224a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->origin_upper_left = var->origin_upper_left; 20234a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->pixel_center_integer = var->pixel_center_integer; 20245466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 20255466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 20265d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier); 20275466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 20285466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 20295466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 20305466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 20315466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 20325d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* By now, we know it's a new variable declaration (we didn't hit the 20335d25746640ee27882b69a962459727cf924443dbKenneth Graunke * above "continue"). 20345d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 20355d25746640ee27882b69a962459727cf924443dbKenneth Graunke * From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 20365466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 20375466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 20385466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 20395466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 20405466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 2041de3b40d8cdc42cc1cd71dd65c90d6d569d922fc6Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) 20425466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 20435466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 20445466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 20455466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 20465d25746640ee27882b69a962459727cf924443dbKenneth Graunke /* Add the variable to the symbol table. Note that the initializer's 20475d25746640ee27882b69a962459727cf924443dbKenneth Graunke * IR was already processed earlier (though it hasn't been emitted yet), 20485d25746640ee27882b69a962459727cf924443dbKenneth Graunke * without the variable in scope. 20495d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 20505d25746640ee27882b69a962459727cf924443dbKenneth Graunke * This differs from most C-like languages, but it follows the GLSL 20515d25746640ee27882b69a962459727cf924443dbKenneth Graunke * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 20525d25746640ee27882b69a962459727cf924443dbKenneth Graunke * spec: 20535d25746640ee27882b69a962459727cf924443dbKenneth Graunke * 20545d25746640ee27882b69a962459727cf924443dbKenneth Graunke * "Within a declaration, the scope of a name starts immediately 20555d25746640ee27882b69a962459727cf924443dbKenneth Graunke * after the initializer if present or immediately after the name 20565d25746640ee27882b69a962459727cf924443dbKenneth Graunke * being declared if not." 20575d25746640ee27882b69a962459727cf924443dbKenneth Graunke */ 20585d25746640ee27882b69a962459727cf924443dbKenneth Graunke if (!state->symbols->add_variable(var->name, var)) { 20595d25746640ee27882b69a962459727cf924443dbKenneth Graunke YYLTYPE loc = this->get_location(); 20605d25746640ee27882b69a962459727cf924443dbKenneth Graunke _mesa_glsl_error(&loc, state, "name `%s' already taken in the " 20615d25746640ee27882b69a962459727cf924443dbKenneth Graunke "current scope", decl->identifier); 20625d25746640ee27882b69a962459727cf924443dbKenneth Graunke continue; 20635d25746640ee27882b69a962459727cf924443dbKenneth Graunke } 20645d25746640ee27882b69a962459727cf924443dbKenneth Graunke 20658048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt /* Push the variable declaration to the top. It means that all 20668048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * the variable declarations will appear in a funny 20678048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * last-to-first order, but otherwise we run into trouble if a 20688048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is prototyped, a global var is decled, then the 20698048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is defined with usage of the global var. See 20708048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * glslparsertest's CorrectModule.frag. 20718048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt */ 20728048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt instructions->push_head(var); 2073fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt instructions->append_list(&initializer_instructions); 2074a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2075a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20768558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 20778558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 20788558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 20798558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 20808558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 20818558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 20828558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 20838558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 20848558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 2085a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 20868558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 2087a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2088a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2089a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2090fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 20910044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 209218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 2093a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2094953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 2095a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 2096a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 20972e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 2098a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2099d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 2100a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2101a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 2102a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 2103a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2104a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 210518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 2106a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2107a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2108a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 210918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 2110a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2111a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21120471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 2113a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2114a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2115068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 2116068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2117068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 2118068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 2119068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 2120068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 2121068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 2122068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2123068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 2124068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 2125068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 2126068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 2127cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 2128cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 2129cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2130cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2131cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2132cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2133068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2134cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2135068c80cfe0a280490353b6b007165d717c672eedEric Anholt 213645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 213745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 213845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 213945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 214045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2141e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke /* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...) 2142e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke * call already handled the "vec4[..] foo" case. 2143e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke */ 2144e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (this->is_array) { 2145e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke type = process_array_type(type, this->array_size, state); 2146e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2147e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2148e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke if (type->array_size() == 0) { 2149e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke _mesa_glsl_error(&loc, state, "arrays passed as parameters must have " 2150e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke "a declared size."); 2151e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke type = glsl_type::error_type; 2152e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke } 2153e511a35fc53fb75a2401d8a94c0c35634175c575Kenneth Graunke 2154cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 21557e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); 2156a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2157cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2158cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2159cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 21602e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2161a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21620044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2163a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2164a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2165a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2166a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2167a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2168a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2169a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 217045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2171304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 217245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 217345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 217445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2175a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2176cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2177cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2178a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21792b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 218045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2181068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2182cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2183cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2184cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2185cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2186cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2187cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2188cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2189cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2190cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2191cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2192cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2193cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2194a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2195a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2196a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2197a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2198fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 219992318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 220092318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2202953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 220318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 220492318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 220592318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2206a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2207ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 220963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick /* From page 21 (page 27 of the PDF) of the GLSL 1.20 spec, 221063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 221163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "Function declarations (prototypes) cannot occur inside of functions; 221263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * they must be at global scope, or for the built-in functions, outside 221363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * the global scope." 221463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 221563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * From page 27 (page 33 of the PDF) of the GLSL ES 1.00.16 spec, 221663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 221763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * "User defined functions may only be defined within the global scope." 221863b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 221963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * Note that this language does not appear in GLSL 1.10. 222063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick */ 222163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick if ((state->current_function != NULL) && (state->language_version != 110)) { 222263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick YYLTYPE loc = this->get_location(); 222363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick _mesa_glsl_error(&loc, state, 222463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "declaration of function `%s' not allowed within " 222563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick "function body", name); 222663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick } 222763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick 2228edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 2229edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * 2230edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * "Identifiers starting with "gl_" are reserved for use by 2231edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * OpenGL, and may not be declared in a shader as either a 2232edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke * variable or a function." 2233edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke */ 2234edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke if (strncmp(name, "gl_", 3) == 0) { 2235edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke YYLTYPE loc = this->get_location(); 2236edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke _mesa_glsl_error(&loc, state, 2237edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke "identifier `%s' uses reserved `gl_' prefix", name); 2238edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke } 2239edd180f03216d2fcb2771aeea34e7015fb2b83c3Kenneth Graunke 2240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 224445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 224545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 224645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2248e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2249e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 225092318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2251e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 225276e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt if (!return_type) { 225376e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt YYLTYPE loc = this->get_location(); 225476e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt _mesa_glsl_error(&loc, state, 225576e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt "function `%s' has undeclared return type `%s'", 225676e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt name, return_type_name); 225776e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt return_type = glsl_type::error_type; 225876e96d74f49cc262ceaf2ed6c48d2f4ed21d219fEric Anholt } 2259e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2260ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2261ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2262ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2263ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2264ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2265ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2266ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2267ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2268ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2271a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2272a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2273e466b182bbf21f62fe6542091f4af3275555db80Ian Romanick f = state->symbols->get_function(name); 2274a044285e25615f2d97636fe3ba47d580c3537bc4Kenneth Graunke if (f != NULL && !f->is_builtin) { 2275202604e8160157e4e80b3458175e0170d168e557Ian Romanick sig = f->exact_matching_signature(&hir_parameters); 22760d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 22770d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 22780d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 22790d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2280abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 22810d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 22820d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 22830d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 22841e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 22850d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 22860d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 228760be7626b829af7e1d07330b9a88468924ba350eEric Anholt 22880d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 22890d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 22900d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2291a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22920d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 22930d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22950d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 2296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2298a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 22991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 2300e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke if (!state->symbols->add_function(f->name, f)) { 2301e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke /* This function name shadows a non-function use of the same name. */ 2302e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke YYLTYPE loc = this->get_location(); 2303e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke 2304e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke _mesa_glsl_error(&loc, state, "function name `%s' conflicts with " 2305e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke "non-function", name); 2306e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke return NULL; 2307e09591317b2470fe9c104606577d4e10255727c0Kenneth Graunke } 23089fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 23099fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Emit the new function header */ 231063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick if (state->current_function == NULL) 231163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick instructions->push_tail(f); 231263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick else { 231363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick /* IR invariants disallow function declarations or definitions nested 231463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * within other function definitions. Insert the new ir_function 231563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * block in the instruction sequence before the ir_function block 231663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * containing the current ir_function_signature. 231763b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * 231863b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * This can only happen in a GLSL 1.10 shader. In all other GLSL 231963b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * versions this nesting is disallowed. There is a check for this at 232063b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick * the top of this function. 232163b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick */ 232263b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick ir_function *const curr = 232363b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick const_cast<ir_function *>(state->current_function->function()); 232463b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick 232563b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick curr->insert_before(f); 232663b80f8cc181ded154668e60ac2cf0a6a82d118fIan Romanick } 2327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2329ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2330ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 233125711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2332ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2333ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2334ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2335ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2336174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 233792318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2338174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2339174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2340174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2341174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2342ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2343a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 234692318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 23471660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 234892318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2351bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 235292318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 235392318a947958892497722772b03c643ebc943294Ian Romanick 235492318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 235592318a947958892497722772b03c643ebc943294Ian Romanick */ 235692318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 235792318a947958892497722772b03c643ebc943294Ian Romanick} 235892318a947958892497722772b03c643ebc943294Ian Romanick 235992318a947958892497722772b03c643ebc943294Ian Romanick 236092318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 236192318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 236292318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 236392318a947958892497722772b03c643ebc943294Ian Romanick{ 236492318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 236592318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2366e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 236792318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2368826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke if (signature == NULL) 2369826a39cb14244820e8539a2328bb52447348f184Kenneth Graunke return NULL; 2370a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 237141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 237241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 23736de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 237441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2375e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2376e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2377a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23788bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2379e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2380fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2381e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2382fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2383a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 23843359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 23853359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 23863359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 23873359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 23883359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 23893359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 23903359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 23913359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 23923359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick state->symbols->add_variable(var->name, var); 23933359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2394a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2395a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 23969fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2397894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 23989fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2399a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 24008bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2401a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 240241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 240341ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2404a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 24056de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 24066de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 24076de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 24086de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 24096de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 24106de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 24116de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 24126de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2416a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 241716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 241816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2419fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 242016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 242116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 242216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 2423953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 242416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2425c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2426c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 242716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 2428aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 242916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 243016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 2431ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 2432ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 2433ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 2434ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 2435ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 2436ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 2437ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 2438f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2439ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 244016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 244116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_expression *const ret = (ir_expression *) 244216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick opt_return_value->hir(instructions, state); 244316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 244416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 244518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 244618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 244718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 244818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 244918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 245018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 245118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 245218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 245318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 245418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 245518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 245616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 24571660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 245816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 2459aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 2460aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 2461aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 2462aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 2463aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 2464aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 2465aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 2466f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2467aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 24681660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 246916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 247016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 24716de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 247216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 2473c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 247416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 247516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2476c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 2477b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 2478b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 2479b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 2480b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 2481b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 2482b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 248377049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 2484c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2485c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 2486c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 2487c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 24884cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 24894cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 24904cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 24914cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 24924cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 24934cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 24944cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 24954cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 24964cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 24974cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 24984cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 24994cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 25004cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 25014cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 25024cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 25034cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 25042d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt /* Inline the for loop expression again, since we don't know 25052d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * where near the end of the loop body the normal copy of it 25062d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * is going to be placed. 25072d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt */ 25082d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt if (mode == ast_continue && 25092d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression) { 25102d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, 25112d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state); 25122d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt } 25132d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 25144cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 25154cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 25161660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 25171660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 25181660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 25194cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 25204cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 25214cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 25224cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 2523c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2524b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2525b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 252616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 252716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 252816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 252916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 25303c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25313c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25323c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 25333c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 25343c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 25353c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 2536953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 25371660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 25383c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 25393c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25403c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 25413c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 25423c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 25433c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 25443c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 25453c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 25463c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 25473c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 25483c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 25493c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 25503c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 25513c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25523c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 25533c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 25543c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 25553c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 25573c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 2558665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (then_statement != NULL) { 2559665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 25604f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 2561665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 2562665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 25633c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 2564665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (else_statement != NULL) { 2565665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 25664f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 2567665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 2568665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 25693c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25703c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 25713c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 25723c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 25733c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 25743c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 25753c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 25769e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 25779e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 25788c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 25798c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 25808c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 25819e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 2582953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 25831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 25849e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 25859e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 25869e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 25879e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 25889e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 25899e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 25909e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 25919e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 25929e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 25939e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 25949e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 25959e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 25969e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 25979e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 25989e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 25991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 26001660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 26019e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26021660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 26039e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26049e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 26051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 26069e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26079e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 26089e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 26099e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 26109e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 26118c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 26128c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26138c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26148c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 26158c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 26168c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 26178c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 2618953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 26191660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 2620484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 26218c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 2622484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 26238c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 26248c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26258c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 26268c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 26278c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 26298c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 26308c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26318c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 26328c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 26338c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 26342d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; 26352d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 26368c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 26372d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = this; 26388c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 26398c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 26408c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 26419e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26424f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 26434f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 26449e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26459e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 26469e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 26479e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 26488c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 26498c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 26508c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 2651484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 26529e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 26539e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 2654e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 2655e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 2656e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 26572d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = nesting_ast; 2658e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 26599e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 26609e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 26619e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 26629e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 26633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26653455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 26663455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 26673455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 26683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 26693455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 26703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 267185ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 267285ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 26733455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 26743455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26753455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26763455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 26773455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 26783455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 26793455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 26803455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 26813455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26823455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 26833455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 26843455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 26853455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 26863455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 26872b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 26882b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 2689304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 26903455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 26913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 26923455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 26933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26943455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26953455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 26963455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 26973455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 26983455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 26993455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 270021b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, 270121b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt decl_count); 27023455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 27042b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 27052b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 27063455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 27073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 27093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 27113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 27123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27132b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 27142b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 27153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const struct glsl_type *const field_type = 27163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (decl->is_array) 27173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick ? process_array_type(decl_type, decl->array_size, state) 27183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick : decl_type; 27193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 272073986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 272173986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 27223455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 27233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 27243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 27253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 27263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27273455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 27283455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27291d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick const char *name; 27301d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick if (this->name == NULL) { 27311d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick static unsigned anon_count = 1; 27321d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick char buf[32]; 27333455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27341d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick snprintf(buf, sizeof(buf), "#anon_struct_%04x", anon_count); 27351d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick anon_count++; 27361d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 27371d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = strdup(buf); 27381d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } else { 27391d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = this->name; 27401d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } 27411d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 274249e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 274349e3577b91f44013746f7a3db411e7041b7d899eIan Romanick glsl_type::get_record_instance(fields, decl_count, name); 27441d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 2745ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 2746a789ca649cb143c0c5bf3209ff1bde398fbd777eIan Romanick if (!state->symbols->add_type(name, t)) { 2747ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 2748ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2749a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 2750a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 2751a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 2752a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 2753a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 2754a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 2755a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 2756a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 2757a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 2758a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 2759ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 27603455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 27613455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 27623455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 27633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 27643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 2765