ast_to_hir.cpp revision 959a9ecdd8fbc3375e4149f2b44d253622ff12ee
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 52a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "main/imports.h" 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); 63a4e92c4b26578614d76ce71b53194ea5c0f58d6cIan Romanick _mesa_glsl_initialize_constructors(instructions, state); 64c22c40015db32b68b33c4944b9d94bf499135ec5Eric Anholt _mesa_glsl_initialize_functions(instructions, state); 65adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick 6641ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 6741ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 682b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, & state->translation_unit) 69304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 70d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick} 71d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 72d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 730104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick/** 740104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is available, convert one operand to a different type 750104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 760104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * The \c from \c ir_rvalue is converted "in place". 770104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 780104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param to Type that the operand it to be converted to 790104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param from Operand that is being converted 800104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param state GLSL compiler state 810104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 820104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \return 830104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is possible (or unnecessary), \c true is returned. 840104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * Otherwise \c false is returned. 850104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 860104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanickstatic bool 87bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickapply_implicit_conversion(const glsl_type *to, ir_rvalue * &from, 880104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick struct _mesa_glsl_parse_state *state) 890104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick{ 90bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (to->base_type == from->type->base_type) 910104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 920104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 930104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* This conversion was added in GLSL 1.20. If the compilation mode is 940104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * GLSL 1.10, the conversion is skipped. 950104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 960104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (state->language_version < 120) 970104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 980104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 990104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* From page 27 (page 33 of the PDF) of the GLSL 1.50 spec: 1000104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 1010104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * "There are no implicit array or structure conversions. For 1020104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * example, an array of int cannot be implicitly converted to an 1030104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * array of float. There are no implicit conversions between 1040104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * signed and unsigned integers." 1050104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 1060104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* FINISHME: The above comment is partially a lie. There is int/uint 1070104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * FINISHME: conversion for immediate constants. 1080104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 109bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (!to->is_float() || !from->type->is_numeric()) 1100104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 1110104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 112bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick switch (from->type->base_type) { 1130104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_INT: 114bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick from = new ir_expression(ir_unop_i2f, to, from, NULL); 1150104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1160104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_UINT: 117bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick from = new ir_expression(ir_unop_u2f, to, from, NULL); 1180104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1190104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_BOOL: 120dc58b3f8ccd817fdee390a3df5b8e0fb29d5397cEric Anholt from = new ir_expression(ir_unop_b2f, to, from, NULL); 121dc58b3f8ccd817fdee390a3df5b8e0fb29d5397cEric Anholt break; 1220104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick default: 1230104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick assert(0); 1240104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick } 1250104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1260104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 1270104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick} 1280104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1290104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 130a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 131bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickarithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 132a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool multiply, 133a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 134a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 135336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 136336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 1370104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 138a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 139a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 140a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic binary operators add (+), subtract (-), 141a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * multiply (*), and divide (/) operate on integer and 142a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * floating-point scalars, vectors, and matrices." 143a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 14460b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick if (!type_a->is_numeric() || !type_b->is_numeric()) { 145a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 146a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Operands to arithmetic operators must be numeric"); 1470471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 148a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 149a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 150a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 151a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If one operand is floating-point based and the other is 152a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * not, then the conversions from Section 4.1.10 "Implicit 153a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Conversions" are applied to the non-floating-point-based operand." 154a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1550104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 1560104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 157a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 158a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Could not implicitly convert operands to " 159a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "arithmetic operator"); 1600104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return glsl_type::error_type; 161a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 162336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 163336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 164336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 165a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If the operands are integer types, they must both be signed or 166a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both be unsigned." 167a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 168a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * From this rule and the preceeding conversion it can be inferred that 169a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT. 17060b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * The is_numeric check above already filtered out the case where either 17160b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * type is not one of these, so now the base types need only be tested for 17260b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * equality. 173a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 174a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_a->base_type != type_b->base_type) { 175a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 176a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "base type mismatch for arithmetic operator"); 1770471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 178a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 179a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 180a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All arithmetic binary operators result in the same fundamental type 181a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (signed integer, unsigned integer, or floating-point) as the 182a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands they operate on, after operand type conversion. After 183a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * conversion, the following cases are valid 184a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 185a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The two operands are scalars. In this case the operation is 186a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * applied, resulting in a scalar." 187a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 188cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar() && type_b->is_scalar()) 189a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 190a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 191a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* One operand is a scalar, and the other is a vector or matrix. 192a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case, the scalar operation is applied independently to each 193a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component of the vector or matrix, resulting in the same size 194a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector or matrix." 195a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 196cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar()) { 197cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (!type_b->is_scalar()) 198a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 199cb36f8aaeeb09660843316270a781948f773d90bIan Romanick } else if (type_b->is_scalar()) { 200a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 202a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 203a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 204a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been 205a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * handled. 206a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 20760b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_a->is_scalar()); 20860b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_b->is_scalar()); 209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 210a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The two operands are vectors of the same size. In this case, the 211a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operation is done component-wise resulting in the same size 212a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector." 213a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 214a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector() && type_b->is_vector()) { 215a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) { 216a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 217a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } else { 218a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 219a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "vector size mismatch for arithmetic operator"); 220a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 221a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } 222a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 223a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 224a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 225a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and 226a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <vector, vector> have been handled. At least one of the operands must 227a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * be matrix. Further, since there are no integer matrix types, the base 228a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * type of both operands must be float. 229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23060b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(type_a->is_matrix() || type_b->is_matrix()); 231a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_a->base_type == GLSL_TYPE_FLOAT); 232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_b->base_type == GLSL_TYPE_FLOAT); 233a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 234a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The operator is add (+), subtract (-), or divide (/), and the 235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands are matrices with the same number of rows and the same 236a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * number of columns. In this case, the operation is done component- 237a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise resulting in the same size matrix." 238a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The operator is multiply (*), where both operands are matrices or 239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * one operand is a vector and the other a matrix. A right vector 240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand is treated as a column vector and a left vector operand as a 241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * row vector. In all these cases, it is required that the number of 242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * columns of the left operand is equal to the number of rows of the 243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * right operand. Then, the multiply (*) operation does a linear 244a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * algebraic multiply, yielding an object that has the same number of 245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * rows as the left operand and the same number of columns as the right 246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand. Section 5.10 "Vector and Matrix Operations" explains in 247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * more detail how vectors and matrices are operated on." 248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (! multiply) { 250a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) 251a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 252a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 253fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick if (type_a->is_matrix() && type_b->is_matrix()) { 254c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* Matrix multiply. The columns of A must match the rows of B. Given 255c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the other previously tested constraints, this means the vector type 256c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of a row from A must be the same as the vector type of a column from 257c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 258c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 259c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b->column_type()) { 260c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* The resulting matrix has the number of columns of matrix B and 261c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the number of rows of matrix A. We get the row count of A by 262c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * looking at the size of a vector that makes up a column. The 263c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * transpose (size of a row) is done for B. 264c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 265a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt const glsl_type *const type = 266c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick glsl_type::get_instance(type_a->base_type, 267c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_a->column_type()->vector_elements, 268c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_b->row_type()->vector_elements); 269a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt assert(type != glsl_type::error_type); 270a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 271a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type; 272a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 273fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick } else if (type_a->is_matrix()) { 274a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* A is a matrix and B is a column vector. Columns of A must match 275c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * rows of B. Given the other previously tested constraints, this 276c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * means the vector type of a row from A must be the same as the 277c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * vector the type of B. 278a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 279c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b) 280a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 282fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick assert(type_b->is_matrix()); 283a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 284c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* A is a row vector and B is a matrix. Columns of A must match rows 285c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of B. Given the other previously tested constraints, this means 286c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the type of A must be the same as the vector type of a column from 287c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 289c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a == type_b->column_type()) 290a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 291a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 292a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 293a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); 294a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 295a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 298a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All other cases are illegal." 299a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 300a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3010471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 302a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 303a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 305a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 30665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholtunary_arithmetic_result_type(const struct glsl_type *type, 30765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 308a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 309a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 57: 310a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 311a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic unary operators negate (-), post- and pre-increment 312a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * and decrement (-- and ++) operate on integer or floating-point 313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * values (including vectors and matrices). All unary operators work 314a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component-wise on their operands. These result with the same type 315a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * they operated on." 316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 31765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (!type->is_numeric()) { 31865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 31965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to arithmetic operators must be numeric"); 3200471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 32165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 322a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 323a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 324a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 325a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 326a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickmodulus_result_type(const struct glsl_type *type_a, 32965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt const struct glsl_type *type_b, 33065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 331a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The operator modulus (%) operates on signed or unsigned integers or 334a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * integer vectors. The operand types must both be signed or both be 335a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * unsigned." 336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 33740176e249f72b6090204611873b19aed3da67c71Ian Romanick if (!type_a->is_integer() || !type_b->is_integer() 338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->base_type != type_b->base_type)) { 33965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3400471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 341a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 342a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 343a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operands cannot be vectors of differing size. If one operand is 344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * a scalar and the other vector, then the scalar is applied component- 345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise to the vector, resulting in the same type as the vector. If both 346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * are vectors of the same size, the result is computed component-wise." 347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 348a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector()) { 349a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (!type_b->is_vector() 350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->vector_elements == type_b->vector_elements)) 351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else 353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 354a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 355a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operator modulus (%) is not defined for any other data types 356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (non-integer types)." 357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 35865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3590471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 361a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 362a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 364bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickrelational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 36565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 367336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 368336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 3690150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick 370a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 371a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The relational operators greater than (>), less than (<), greater 372a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * than or equal (>=), and less than or equal (<=) operate only on 373a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * scalar integer and scalar floating-point expressions." 374a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 375a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick if (!type_a->is_numeric() 376a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick || !type_b->is_numeric() 377cb36f8aaeeb09660843316270a781948f773d90bIan Romanick || !type_a->is_scalar() 37865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt || !type_b->is_scalar()) { 37965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 38065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to relational operators must be scalar and " 38165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "numeric"); 3820471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 38365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 384a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 385a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "Either the operands' types must match, or the conversions from 386a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Section 4.1.10 "Implicit Conversions" will be applied to the integer 387a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand, after which the types must match." 388a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 3890150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 3900150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 39165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 39265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Could not implicitly convert operands to " 39365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "relational operator"); 3940150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick return glsl_type::error_type; 395a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 396336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 397336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 398a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 39965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (type_a->base_type != type_b->base_type) { 40065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "base type mismatch"); 4010471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 40265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 403a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 404a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The result is scalar Boolean." 405a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4060471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::bool_type; 407a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 408a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 409a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 4100bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick/** 4110bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that a value can be assigned to a location with a specified type 4120bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4130bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that \c rhs can be assigned to some location. If the types are 4140bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * not an exact match but an automatic conversion is possible, \c rhs will be 4150bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * converted. 4160bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4170bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \return 4180bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. 4190bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Otherwise the actual RHS to be assigned will be returned. This may be 4200bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c rhs, or it may be \c rhs after some type conversion. 4210bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4220bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \note 4230bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * In addition to being used for assignments, this function is used to 4240bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * type-check return values. 4250bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 426fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 427336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholtvalidate_assignment(struct _mesa_glsl_parse_state *state, 428336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *lhs_type, ir_rvalue *rhs) 4290bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick{ 430336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *rhs_type = rhs->type; 4310bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4320bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If there is already some error in the RHS, just return it. Anything 4330bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * else will lead to an avalanche of error message back to the user. 4340bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4350bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type->is_error()) 4360bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4370bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4380bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If the types are identical, the assignment can trivially proceed. 4390bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4400bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type == lhs_type) 4410bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4420bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4430157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the array element types are the same and the size of the LHS is zero, 4440157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the assignment is okay. 4450157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * 4460157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * Note: Whole-array assignments are not permitted in GLSL 1.10, but this 4470157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is handled by ir_dereference::is_lvalue. 4480157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4490157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs_type->is_array() && rhs->type->is_array() 4500157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->element_type() == rhs->type->element_type()) 4510157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->array_size() == 0)) { 4520157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick return rhs; 4530157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 4540157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 455336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt /* Check for implicit conversion in GLSL 1.20 */ 456336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (apply_implicit_conversion(lhs_type, rhs, state)) { 457336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt rhs_type = rhs->type; 458336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (rhs_type == lhs_type) 459336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt return rhs; 460336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt } 461336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 4620bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return NULL; 4630bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick} 4640bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 46510a685218610e737e23d2d8a243ed6ff6613becdEric Anholtir_rvalue * 46610a685218610e737e23d2d8a243ed6ff6613becdEric Anholtdo_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, 46710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_rvalue *lhs, ir_rvalue *rhs, 46810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt YYLTYPE lhs_loc) 46910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt{ 47010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); 47110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 47210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!error_emitted) { 47310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt /* FINISHME: This does not handle 'foo.bar.a.b.c[5].d = 5' */ 47410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!lhs->is_lvalue()) { 47510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 47610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 47710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 47810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 47910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 480336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 48110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 48210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 48310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 48410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 4850157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 4860157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 4870157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 4880157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 4890157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 4900157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4910157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 4920157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 4930157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 4940157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 4950157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 49636ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 4970157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 4980157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 4990157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 50063f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 50163f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 50263f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 50363f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 50463f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 50563f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 50663f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 5070157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 5080157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 5090157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 51010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 51110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 51210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_instruction *tmp = new ir_assignment(lhs, rhs, NULL); 51310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt instructions->push_tail(tmp); 51410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 51510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt return rhs; 51610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 5170bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 5185185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5195185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick/** 5205185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick * Generate a new temporary and add its declaration to the instruction stream 5215185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick */ 5225185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanickstatic ir_variable * 5235185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanickgenerate_temporary(const glsl_type *type, exec_list *instructions, 5245185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick struct _mesa_glsl_parse_state *state) 5255185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick{ 5265185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick char *name = (char *) malloc(sizeof(char) * 13); 5275185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5285185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick snprintf(name, 13, "tmp_%08X", state->temp_index); 5295185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick state->temp_index++; 5305185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5315185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick ir_variable *const var = new ir_variable(type, name); 5325185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick instructions->push_tail(var); 5335185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5345185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick return var; 5355185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick} 5365185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5375185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 538de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 539959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 540de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 541de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 542de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_rvalue *var_deref; 543de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 544de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* FINISHME: Give unique names to the temporaries. */ 545de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var = new ir_variable(lvalue->type, "_internal_tmp"); 546de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 547de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 54870fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick var_deref = new ir_dereference_variable(var); 549959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholt instructions->push_tail(new ir_assignment(var_deref, lvalue, NULL)); 550de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 551de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 552de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 553de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 554de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 555de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 556de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt return var_deref; 557de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 558de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 559de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 560fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 5610044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 56218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 56318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 56418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 56518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 56618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 56718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 56818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 56918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 57018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 571fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 5720044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 57318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 574a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 575a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 576a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 577a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 578a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 579a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 580a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 581a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 582a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 583a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 584a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 585a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 586a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 587a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 588a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 589a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 590a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_equal, 591a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_nequal, 592a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 593a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 594a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 595a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 596a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 597a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 598a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 599a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 600a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 601a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 602a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 603a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 604a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 605a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 606a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 607a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 608a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 609a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 610a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 611a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 612a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 613a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 614a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 616de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 617de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 618de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 619de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 630fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 631fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *op[2]; 6320471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 63618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 63818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 6396652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 64018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 64118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 64310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 64410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 64510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 64610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 6486652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 65118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 653a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick error_emitted = op[0]->type->is_error(); 654a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick if (type->is_error()) 655a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0]->type = type; 656a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 659a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 660a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 66118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 66365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 66565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 66718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = new ir_expression(operations[this->oper], type, 668a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0], NULL); 669a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 673a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 674a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 67518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 67618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 677a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 678bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 67918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 680a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 681a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 68318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = new ir_expression(operations[this->oper], type, 684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0], op[1]); 685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 686a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 687a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 68818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 68918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 690a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 69165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 69318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 694a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 69518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = new ir_expression(operations[this->oper], type, 696a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0], op[1]); 69765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 698a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 699a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 700a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 701a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 702183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-shift operators"); 703183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 704a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 705a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 706a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 707a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 708a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 709a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 71018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 71118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 712a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 71365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 716a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 717a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 718a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 719a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 720cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 721a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 72218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = new ir_expression(operations[this->oper], type, 723a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0], op[1]); 72465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 726a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 727a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 728a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 7296e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 7306e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 7316e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7326e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 7336e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 7346e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 7356e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 7366e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 7376e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 7386e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 7396e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 7406e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 741bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 742bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 743212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 7446e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 7456e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 7466e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 747a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 748a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 749a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 750a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 751a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 7526e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 7536e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7546e659caaa946339a2de3890a8bed091ccb65102aIan Romanick result = new ir_expression(operations[this->oper], glsl_type::bool_type, 7556e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0], op[1]); 7566e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 7576e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7586e659caaa946339a2de3890a8bed091ccb65102aIan Romanick assert(result->type == glsl_type::bool_type); 759a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 760a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 761a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 762a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 763a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 764a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 765183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-wise operators"); 766183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 767a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 768a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7694950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 770b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 771b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 772b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 773b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 774b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 775b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 776b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 777ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 778b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 779b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 78044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 78144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 78244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 78344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 78444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 78544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 78644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 78744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 78844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 78944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 79044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 79144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 79244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 79344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 79444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 79544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 79644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 79744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 79844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 79944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_if *const stmt = new ir_if(op[0]); 80044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8014950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 80244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8034950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 80444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 80544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8064950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 80744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 80844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 80944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 81044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 81144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 812b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 81344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_variable *const tmp = generate_temporary(glsl_type::bool_type, 81444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions, state); 815b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 81670fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick ir_dereference *const then_deref = new ir_dereference_variable(tmp); 81744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 81844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt new ir_assignment(then_deref, op[1], NULL); 81944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8204950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 82170fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick ir_dereference *const else_deref = new ir_dereference_variable(tmp); 82244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 82344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt new ir_assignment(else_deref, new ir_constant(false), NULL); 82444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 8254950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 82670fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick result = new ir_dereference_variable(tmp); 82744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 82844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8294950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 8304950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8314950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8324950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 8334950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 8344950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 8364950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 8374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8384950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 8394950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 8404950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 8414950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8424950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 84344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 84444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 84544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 84644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 84744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 84844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 84944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 85044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 85144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 85244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 85344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 85444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 85544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 85644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 85744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 85844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 85944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 86044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 86144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 86244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_if *const stmt = new ir_if(op[0]); 86344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8644950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 86544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_variable *const tmp = generate_temporary(glsl_type::bool_type, 86644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions, state); 8674950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 86844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8694950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 87144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8724950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 87444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 87544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 87644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8774950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87870fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick ir_dereference *const then_deref = new ir_dereference_variable(tmp); 87944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 88044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt new ir_assignment(then_deref, new ir_constant(true), NULL); 88144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8824950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 88370fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick ir_dereference *const else_deref = new ir_dereference_variable(tmp); 88444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 88544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt new ir_assignment(else_deref, op[1], NULL); 88644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 8874950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 88870fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick result = new ir_dereference_variable(tmp); 88944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 89044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8914950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 8924950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8934950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8944950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 8954950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 8964950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 8974950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8984950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 899b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt result = new ir_expression(operations[this->oper], glsl_type::bool_type, 900b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0], op[1]); 901ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 902a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 903a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 904a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 905a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 906a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 907a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 908a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 909a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 910a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 911a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 912ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 913a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 914a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 915a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt result = new ir_expression(operations[this->oper], glsl_type::bool_type, 916a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0], NULL); 917ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 918a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 919a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 920a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 921a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 922a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 923a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 92418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 92518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 926a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 927bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 92818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 929a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 930a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 931fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *temp_rhs = new ir_expression(operations[this->oper], type, 932fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke op[0], op[1]); 933a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9343e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 9353e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (ir_rvalue *)op[0]->clone(NULL), temp_rhs, 93610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 93710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 93810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 939a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 940a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 941a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 942a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 943a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 944a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 945a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 946a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 947a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 94848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 94948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 95048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 95148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 95265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 95348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 95448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 95548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 95648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt struct ir_rvalue *temp_rhs; 95748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt temp_rhs = new ir_expression(operations[this->oper], type, 95848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0], op[1]); 95948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 9603e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 9613e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (ir_rvalue *)op[0]->clone(NULL), temp_rhs, 96248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 96348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 96465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 96548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 96648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 967a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 968a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 969a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rs_assign: 970183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 971183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement bit-shift assignment operators"); 972183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 973251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 975a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_or_assign: 978183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 979183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement logic assignment operators"); 980183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 981251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 982a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 98396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 98496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 98596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 98696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 98796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 98896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 98996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 99096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 99196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 99296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 99396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 99496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 99596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 99696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 99796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 99896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 99996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 100096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 100196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 100296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 100396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 10040ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 10050ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 100696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10070ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 10080ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 100996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 101096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 101196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 101296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 101396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 101496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 101596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 101696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 101796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 101896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1019bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1020bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1021db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 102296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 102396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 102496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 102596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 102696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 10270ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1028db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 10290ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 103096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 103196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10327825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 10337825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 10347825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 10357825d3d15710fdfcfc503754862963aac8065480Ian Romanick 10367825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 10377825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 10387825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 10397825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 10407825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 10417825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_variable *const tmp = generate_temporary(type, 10427825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions, state); 10430ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10447825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_if *const stmt = new ir_if(op[0]); 10457825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 10460ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10477825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 10487825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_dereference *const then_deref = new ir_dereference_variable(tmp); 10497825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 10507825d3d15710fdfcfc503754862963aac8065480Ian Romanick new ir_assignment(then_deref, op[1], NULL); 10517825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 10520ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10537825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 10547825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_dereference *const else_deref = new ir_dereference_variable(tmp); 10557825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 10567825d3d15710fdfcfc503754862963aac8065480Ian Romanick new ir_assignment(else_deref, op[2], NULL); 10577825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 10580ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10597825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = new ir_dereference_variable(tmp); 10607825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1061251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 106296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1063a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1064a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 106576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 106676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 106776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 106876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[1] = new ir_constant(1.0f); 106976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 107076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[1] = new ir_constant(1); 107176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1072a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 107376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 107476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt struct ir_rvalue *temp_rhs; 107576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt temp_rhs = new ir_expression(operations[this->oper], type, 107676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0], op[1]); 107776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 10783e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 10793e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (ir_rvalue *)op[0]->clone(NULL), temp_rhs, 108076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 108176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 108276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 108376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 108476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1085a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1086a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1087de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1088de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1089de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 1090de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[1] = new ir_constant(1.0f); 1091de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 1092de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[1] = new ir_constant(1); 1093de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1094de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1095de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1096a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1097de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1098de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt struct ir_rvalue *temp_rhs; 1099de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt temp_rhs = new ir_expression(operations[this->oper], type, 1100de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0], op[1]); 1101de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1102de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1103de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1104de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 1105959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholt result = get_lvalue_copy(instructions, (ir_rvalue *)op[0]->clone(NULL)); 1106de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 11073e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 11083e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (ir_rvalue *)op[0]->clone(NULL), temp_rhs, 1109de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1110de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1111de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1112de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1113a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1114de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1115a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1116a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 111718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1118a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1119a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1120a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 112127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 112227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 112327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 112427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 112527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 112627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 112727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 112827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1129a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1130b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 113170fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick result = new ir_dereference_array(op[0], op[1]); 1132b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1133b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1134b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1135b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1136b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 113727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 113827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 113927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 114027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 114163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 114263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 114363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 114427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 114563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 114663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 114727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 114827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 114927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 115027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 115127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 115227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 115327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 115427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 115527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 115627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 115727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 115827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 115927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 116027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 116127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 116227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 116327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 116427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 116527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 116627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 116727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 116863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 116963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 117063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 117163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 117263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 117363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 117463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 117563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 117663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 117763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 117827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 117927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 118027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 118127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 118227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 118327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 118427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 118527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 118627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 118763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 118863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 118963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 119063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 119163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 119263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 119363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 119463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 119563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 119663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 119763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 119863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 119963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 120027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 120127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 120263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 120363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 120463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 120563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 120663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 120763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 120863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 120927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 121027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1211b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 121263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1213a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1214a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1215a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1216a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1217a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1218a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1219a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 122063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 122163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 122263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 122327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 122427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 122527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 122627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 122727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 122827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 123027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1231a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 12337cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 12347cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12367cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1237a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1238a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12448bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 12458bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 124770fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick result = new ir_dereference_variable(var); 1248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 125271d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 125318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1255a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1256a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1257a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1258a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1259a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1260a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 12610471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 1262b74b43e4ba27a9b2e9da0f3499af261a4b997b00Ian Romanick result = new ir_constant(this->primary_expression.int_constant); 1263a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1264a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1265a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 12660471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 1267b74b43e4ba27a9b2e9da0f3499af261a4b997b00Ian Romanick result = new ir_constant(this->primary_expression.uint_constant); 1268a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 12710471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 1272b74b43e4ba27a9b2e9da0f3499af261a4b997b00Ian Romanick result = new ir_constant(this->primary_expression.float_constant); 1273a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1274a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1275a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 12760471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 1277b74b43e4ba27a9b2e9da0f3499af261a4b997b00Ian Romanick result = new ir_constant(bool(this->primary_expression.bool_constant)); 1278a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1279a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1280a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1282a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1283a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1284304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1285a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1286a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1287a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1290a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12912b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1292304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1293a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1295a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1298a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1299a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1300a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1302a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1303cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 130471d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1305a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1306a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1307a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1308a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1309a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1310fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13110044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 131218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1314a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1315a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1317a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1318a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1319a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1322a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 132318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 132418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1325a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1326a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1329a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1330a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1331a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1332fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13330044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 133418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1335a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 133618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13378bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 13392b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1340304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1341a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 134218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13438bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1348a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 135128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 135228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickprocess_array_type(const glsl_type *base, ast_node *array_size, 135328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 135428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 135528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 135628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 135728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 135828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 135928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 136028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 136128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 136228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 136328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 136428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 136528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 136628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 136728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 136828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 136928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 137028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 137128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 137228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 137328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 137428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 137528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 137628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 137728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 137828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 137928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 138028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 138128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 138228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 138328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 138428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 138528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 138628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 138728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 138828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 138928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick return glsl_type::get_array_instance(base, length); 139128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 139228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1394d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1395d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1396d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1397a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1398d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1399a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 14003455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if ((this->type_specifier == ast_struct) && (this->type_name == NULL)) { 1401a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle annonymous structures. */ 1402a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = NULL; 1403a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1404d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = state->symbols->get_type(this->type_name); 1405d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick *name = this->type_name; 1406a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1407d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick if (this->is_array) { 1408d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = process_array_type(type, this->array_size, state); 140928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1410a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1411a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1412a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1416a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1417a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1418a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var, 14192e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 14202e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1421a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1422a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->invariant) 1423a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->invariant = 1; 1424a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1425a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1426a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->constant || qual->attribute || qual->uniform 1427a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1428a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1429a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1430a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->centroid) 1431a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1433ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick if (qual->attribute && state->target != vertex_shader) { 14342e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 14352e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 14362e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1437ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1438ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 14392e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 14402e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 144190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 144290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 144390b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 144490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 144590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 144690b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 14470ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (qual->varying) { 14480ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 14490ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14500ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 14510ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 14520ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 14530ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 14540ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14550ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 14560ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 14570ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 14580ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 14590ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 146090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 146190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 1462a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->in && qual->out) 1463a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1464a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->attribute || qual->in 1465a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1466a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 14670b678234625fac67a89285ad2871dedc891fb1b1Ian Romanick else if (qual->out || (qual->varying && (state->target == vertex_shader))) 1468a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1469a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->uniform) 1470a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1471a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1472a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_auto; 1473a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 147471df19f5ef6e78beb5160801f81468184b75447eEric Anholt if (qual->uniform) 147571df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 1476c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick 1477c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick /* Any 'in' or 'inout' variables at global scope must be marked as being 1478c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * shader inputs. Likewise, any 'out' or 'inout' variables at global scope 1479c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * must be marked as being shader outputs. 1480c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick */ 1481c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick if (state->current_function == NULL) { 1482c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick switch (var->mode) { 1483c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_in: 1484c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_uniform: 1485c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_in = true; 1486c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1487c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_out: 1488c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_out = true; 1489c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1490c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_inout: 149171df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 149271df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_out = true; 1493c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1494c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick default: 1495c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1496c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick } 149771df19f5ef6e78beb5160801f81468184b75447eEric Anholt } 149871df19f5ef6e78beb5160801f81468184b75447eEric Anholt 1499a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->flat) 1500a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1501a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->noperspective) 1502a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1503a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1504a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 15059d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 15069d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick if (var->type->is_array() && (state->language_version >= 120)) { 15079d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 15089d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 1509a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1510a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1511a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1512fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 15130044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 151418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1515a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1516a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 1517a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 15188558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 1519c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 1520a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15213455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 15223455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 15233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 15243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 15253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 1526a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle vertex shader "invariant" declarations that do not 1527a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: include a type. These re-declare built-in variables to be 1528a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: invariant. 1529a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1530a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1531d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 1532304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 1533c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick /* There are only two valid cases where the declaration list can be 1534c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * empty. 1535c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * 1536c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * 1. The declaration is setting the default precision of a built-in 1537c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * type (e.g., 'precision highp vec4;'). 1538c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * 1539c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick * 2. Adding 'invariant' to an existing vertex shader output. 1540c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 1541c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 1542c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick if (this->type->qualifier.invariant) { 1543c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else if (decl_type != NULL) { 1544c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 1545c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 1546c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1547c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1548a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15492b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 1550a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 1551a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var; 1552a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1553a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 1554a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 1555a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1556a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1557cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 1558a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 1559a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1560a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 1561a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 1562a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1563a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1564a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 1565a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 1566a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1567a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1568a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1569a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1570a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 157128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick var_type = process_array_type(decl_type, decl->array_size, state); 1572a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1573a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 1574a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1575a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1576a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var = new ir_variable(var_type, decl->identifier); 1577a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15783f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 15793f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 15803f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 15813f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 15823f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 15833f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 15843f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 15853f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 15863f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * This is relaxed in GLSL 1.30. 15873f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 15883f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (state->language_version < 120) { 15893f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.out) { 15903f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 15913f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 15923f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 15933f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 15943f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 15953f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.in) { 15963f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 15973f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 15983f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 15993f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16003f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16013f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 16023f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16033f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 16042e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 16052e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 1606a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1607a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Attempt to add the variable to the symbol table. If this fails, it 1608a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * means the variable has already been declared at this scope. Arrays 1609a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * fudge this rule a little bit. 1610a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * 1611a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 1612a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * 1613a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * "It is legal to declare an array without a size and then 1614a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * later re-declare the same name as an array of the same 1615a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * type and specify a size." 1616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 16173359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(decl->identifier)) { 1618a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick ir_variable *const earlier = 1619a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick state->symbols->get_variable(decl->identifier); 1620a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick 1621a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick if ((earlier != NULL) 1622a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick && (earlier->type->array_size() == 0) 1623a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick && var->type->is_array() 1624a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick && (var->type->element_type() == earlier->type->element_type())) { 1625a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick /* FINISHME: This doesn't match the qualifiers on the two 1626a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * FINISHME: declarations. It's not 100% clear whether this is 1627a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick * FINISHME: required or not. 1628a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick */ 1629b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1630894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt if (var->type->array_size() <= (int)earlier->max_array_access) { 1631b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick YYLTYPE loc = this->get_location(); 1632b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1633b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 1634b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick "previous access", 1635b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick earlier->max_array_access); 1636b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick } 1637b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1638a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick earlier->type = var->type; 1639a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick delete var; 1640a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick var = NULL; 1641a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick } else { 1642a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick YYLTYPE loc = this->get_location(); 1643a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick 1644a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick _mesa_glsl_error(& loc, state, "`%s' redeclared", 1645a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick decl->identifier); 1646a4f308f0663208eec07cc320ff4a67589d4b5a7fIan Romanick } 1647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1648a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1651b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 1652b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt * 1653b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt * "Identifiers starting with "gl_" are reserved for use by 1654b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt * OpenGL, and may not be declared in a shader as either a 1655b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt * variable or a function." 1656b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt */ 1657b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt if (strncmp(decl->identifier, "gl_", 3) == 0) { 1658b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt /* FINISHME: This should only trigger if we're not redefining 1659b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt * FINISHME: a builtin (to add a qualifier, for example). 1660b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt */ 1661b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt _mesa_glsl_error(& loc, state, 1662b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt "identifier `%s' uses reserved `gl_' prefix", 1663b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt decl->identifier); 1664b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt } 1665b97ee2e260efb68849ee13402072b7d7185746d5Eric Anholt 16660044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 1667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1668e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 1669b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 1670e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 1671b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1672e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 1673e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 1674e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 1675e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (this->type->qualifier.attribute) { 1676b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 1677b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.uniform) { 1678b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 1679b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.varying) { 1680b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 1681e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.in) { 1682e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 1683e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1684e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.out) { 1685e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 1686e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1687b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 1688b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1689b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 1690e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 1691b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 1692e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 1693e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 1694e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 1695e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 1696fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 1697fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 1698fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1699fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 1700fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1701fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 1702fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 1703fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 1704fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 1705fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 17062d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 17072d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 17082d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 17092d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 17102d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 17112d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 1712fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 1713fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1714fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 1715fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 1716fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 1717fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 1718fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 1719fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 1720fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1721fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 1722fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 1723fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1724fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 1725fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 1726fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 1727fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1728fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 1729fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 1730fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1731fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1732fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 1733fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 1734fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 1735fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1736fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1737fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 17382d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 1739fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 1740fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1741fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1742fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 1743fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1744fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1745fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1746fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1747fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 174866faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 174943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 175043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 175166faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 175266faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 175366faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 175466faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 175566faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 175666faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 175766faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 175866faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 175943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 176043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 176143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 176243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 176343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 176443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 176543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 176643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 176719360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 176843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 176943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 177043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 1771ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 177243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 177343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 177466faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 177566faec4895b7bb59a614087a200c05157191b4aeIan Romanick 177670fe8b66632f4afd87ebb12a450b1e639428e88fIan Romanick ir_dereference *const lhs = new ir_dereference_variable(var); 1777307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt ir_rvalue *rhs = decl->initializer->hir(instructions, state); 177819360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 1779ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 1780307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 178166faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 1782ce030884064046925a655413097dd8257e9392ddIan Romanick if (this->type->qualifier.constant || this->type->qualifier.uniform) { 1783326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 1784326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt if (!constant_value) { 1785307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt _mesa_glsl_error(& initializer_loc, state, 1786ce030884064046925a655413097dd8257e9392ddIan Romanick "initializer of %s variable `%s' must be a " 1787307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt "constant expression", 1788ce030884064046925a655413097dd8257e9392ddIan Romanick (this->type->qualifier.constant) 1789ce030884064046925a655413097dd8257e9392ddIan Romanick ? "const" : "uniform", 1790307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt decl->identifier); 1791326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt } else { 1792326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt rhs = constant_value; 1793326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt var->constant_value = constant_value; 1794307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 1795307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 179666faec4895b7bb59a614087a200c05157191b4aeIan Romanick 1797307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 1798ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 1799ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt if (this->type->qualifier.constant) 1800ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 1801ce030884064046925a655413097dd8257e9392ddIan Romanick 1802ce030884064046925a655413097dd8257e9392ddIan Romanick /* Never emit code to initialize a uniform. 1803ce030884064046925a655413097dd8257e9392ddIan Romanick */ 1804ce030884064046925a655413097dd8257e9392ddIan Romanick if (!this->type->qualifier.uniform) 1805ce030884064046925a655413097dd8257e9392ddIan Romanick result = do_assignment(instructions, state, lhs, rhs, 1806ce030884064046925a655413097dd8257e9392ddIan Romanick this->get_location()); 1807ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 180866faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 180966faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 181017d86f4371da413176ba365ca26a58bac172d365Ian Romanick 18110ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 18120ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 18130ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 18140ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 18150ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 18160ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 18170ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt if (this->type->qualifier.constant && decl->initializer == NULL) { 18180ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 18190ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 18200ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 18210ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 182217d86f4371da413176ba365ca26a58bac172d365Ian Romanick /* Add the vairable to the symbol table after processing the initializer. 182317d86f4371da413176ba365ca26a58bac172d365Ian Romanick * This differs from most C-like languages, but it follows the GLSL 182417d86f4371da413176ba365ca26a58bac172d365Ian Romanick * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 182517d86f4371da413176ba365ca26a58bac172d365Ian Romanick * spec: 182617d86f4371da413176ba365ca26a58bac172d365Ian Romanick * 182717d86f4371da413176ba365ca26a58bac172d365Ian Romanick * "Within a declaration, the scope of a name starts immediately 182817d86f4371da413176ba365ca26a58bac172d365Ian Romanick * after the initializer if present or immediately after the name 182917d86f4371da413176ba365ca26a58bac172d365Ian Romanick * being declared if not." 183017d86f4371da413176ba365ca26a58bac172d365Ian Romanick */ 183117d86f4371da413176ba365ca26a58bac172d365Ian Romanick const bool added_variable = 183217d86f4371da413176ba365ca26a58bac172d365Ian Romanick state->symbols->add_variable(decl->identifier, var); 183317d86f4371da413176ba365ca26a58bac172d365Ian Romanick assert(added_variable); 1834a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1835a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 18368558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 18378558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 18388558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 18398558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 18408558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 18418558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 18428558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 18438558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 18448558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 1845a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 18468558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 1847a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1848a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1849a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1850fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 18510044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 185218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1853a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1854a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 1855a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 18562e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 1857a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1858d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 1859a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1860a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 1861a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 1862a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1863a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 186418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 1865a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1866a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1867a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 186818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 1869a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1870a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 18710471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 1872a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1873a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1874068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 1875068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1876068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 1877068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 1878068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 1879068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 1880068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 1881068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1882068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 1883068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 1884068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 1885068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 1886cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 1887cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 1888cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 1889cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 1890cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 1891cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 1892068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 1893cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 1894068c80cfe0a280490353b6b007165d717c672eedEric Anholt 189545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 189645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 189745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 189845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 189945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 1900cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 190118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_variable *var = new ir_variable(type, this->identifier); 1902a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1903a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle array declarations. Note that this requires 1904a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: complete handling of constant expressions. 1905a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1906a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1907cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 1908cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 1909cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 19102e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 1911cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick if (var->mode == ir_var_auto) 1912cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick var->mode = ir_var_in; 1913a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19140044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 1915a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1916a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 1917a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1918a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1919a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1920a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1921a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 192245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 1923304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 192445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 192545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 192645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 1927a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1928cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 1929cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 1930a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19312b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 193245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 1933068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 1934cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 1935cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 1936cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 1937cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 1938cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 1939cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 1940cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 1941cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 1942cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 1943cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 1944cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 1945cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 1946a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1947a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1948a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1949a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1950fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 195192318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 195292318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 1953a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 195418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 195592318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 195692318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 1957a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 1960a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 1961a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 1962a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 196345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 196445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 196545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 1966a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1967e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 1968e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 196992318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 1970e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 1971e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick assert(return_type != NULL); 1972e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 1973a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 1974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 1975a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 1976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 197792318a947958892497722772b03c643ebc943294Ian Romanick const char *const name = identifier; 19783359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick f = state->symbols->get_function(name); 1979a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (f != NULL) { 19800d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke ir_function_signature *sig = f->exact_matching_signature(&hir_parameters); 19810d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 19820d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 19830d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 19840d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 1985abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 19860d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 19870d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 19880d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 19891e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 19900d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 19910d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 199260be7626b829af7e1d07330b9a88468924ba350eEric Anholt 19930d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 19940d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 19950d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 1996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19970d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 19980d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 1999a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20000d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 20010d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke sig = NULL; 2002a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2003a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 20043359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else if (state->symbols->name_declared_this_scope(name)) { 20053359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* This function name shadows a non-function use of the same name. 20063359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 20073359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 20083359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 20093359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "function name `%s' conflicts with " 20103359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick "non-function", name); 201192318a947958892497722772b03c643ebc943294Ian Romanick sig = NULL; 2012a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2013882dad75408fc4071a9dd700309f9e54f6ad2650Ian Romanick f = new ir_function(name); 20148bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->add_function(f->name, f); 20159fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 20169fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Emit the new function header */ 20179fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke instructions->push_tail(f); 2018a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2019a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2020ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2021ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 202225711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2023ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2024ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2025ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2026ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2027174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 202892318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2029174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2030174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2031174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2032174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2033ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2034a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2035a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2036a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 203792318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 203892318a947958892497722772b03c643ebc943294Ian Romanick sig = new ir_function_signature(return_type); 203992318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2040a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2041a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2042bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 204392318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 204492318a947958892497722772b03c643ebc943294Ian Romanick 204592318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 204692318a947958892497722772b03c643ebc943294Ian Romanick */ 204792318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 204892318a947958892497722772b03c643ebc943294Ian Romanick} 204992318a947958892497722772b03c643ebc943294Ian Romanick 205092318a947958892497722772b03c643ebc943294Ian Romanick 205192318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 205292318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 205392318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 205492318a947958892497722772b03c643ebc943294Ian Romanick{ 205592318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 205692318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2057e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 205892318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2059a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 206041ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 206141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 206241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2063e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2064e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2065a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 20668bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2067e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2068fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2069e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2070fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2071a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20723359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 20733359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 20743359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 20753359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 20763359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 20773359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 20783359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 20793359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 20803359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick state->symbols->add_variable(var->name, var); 20813359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2082a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2083a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20849fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2085894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 20869fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2087a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20888bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2089a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 209041ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 209141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2092a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2093a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2094a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2095a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2096a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 209716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 209816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2099fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 210016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 210116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 210216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 210316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2104c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2105c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 210616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 2107aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 210816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 210916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 2110ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 2111ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 2112ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 2113ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 2114ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 2115ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 2116ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 2117f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2118ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 211916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 212016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_expression *const ret = (ir_expression *) 212116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick opt_return_value->hir(instructions, state); 212216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 212316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 212416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* FINISHME: Make sure the type of the return value matches the return 212516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick * FINISHME: type of the enclosing function. 212616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 212716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 212816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick inst = new ir_return(ret); 212916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 2130aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 2131aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 2132aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 2133aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 2134aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 2135aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 2136aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 2137f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2138aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 213916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick inst = new ir_return; 214016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 214116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 214216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 2143c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 214416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 214516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2146c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 2147b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt /* FINISHME: discard support */ 2148b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 2149b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 2150b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 2151b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 2152b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 2153b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2154c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2155c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 2156c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 2157c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 21584cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 21594cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 21604cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 21614cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 21624cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 21634cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 21644cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 21654cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 21664cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 21674cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 21684cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 21694cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 21704cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 21714cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 21724cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 21734cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 21744cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 21754cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 21764b6fd39c89f308a379882426c1ed3616d60c4628Eric Anholt new ir_loop_jump((mode == ast_break) 21774cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ? ir_loop_jump::jump_break 21784cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick : ir_loop_jump::jump_continue); 21794cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 21804cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 21814cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 21824cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 2183c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2184b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2185b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 218616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 218716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 218816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 218916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 21903c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 21913c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 21923c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 21933c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 21943c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 21953c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 21963c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 21973c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 21983c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 21993c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 22003c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 22013c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 22023c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 22033c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 22043c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 22053c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 22063c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 22073c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 22083c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 22093c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22103c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 22113c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 22123c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 22133c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22143c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_if *const stmt = new ir_if(condition); 22153c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22164f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (then_statement != NULL) 22174f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 22183c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22194f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (else_statement != NULL) 22204f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 22213c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22223c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 22233c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 22243c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 22253c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 22263c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 22273c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 22289e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22299e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22308c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 22318c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 22328c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 22339e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 22349e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 22359e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 22369e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 22379e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22389e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 22399e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 22409e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 22419e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22429e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 22439e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 22449e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 22459e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 22469e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 22479e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 22489e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 22499e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick new ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 22509e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick NULL); 22519e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22529e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_if *const if_stmt = new ir_if(not_cond); 22539e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22549e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 22554b6fd39c89f308a379882426c1ed3616d60c4628Eric Anholt new ir_loop_jump(ir_loop_jump::jump_break); 22569e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22579e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 22589e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 22599e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 22609e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 22618c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 22628c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22638c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22648c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 22658c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 22668c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 22678c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 2268484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 22698c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 2270484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 22718c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 22728c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22738c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 22748c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 22758c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22768c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_loop *const stmt = new ir_loop(); 22778c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 22788c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22798c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 22808c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 22818c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 22828c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 22838c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 22848c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 22858c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 22869e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22874f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 22884f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 22899e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22909e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 22919e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 22929e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 22938c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 22948c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 22958c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 2296484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 22979e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 22989e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 2299e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 2300e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 2301e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 2302e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 23039e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 23049e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 23059e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 23069e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 23073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23093455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 23103455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 23113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 23123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 23133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 23143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 231585ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 231685ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 23173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 23183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23203455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 23213455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 23223455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 23233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 23243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 23253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 23273455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 23283455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 23293455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 23303455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 23312b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 23322b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 2333304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 23343455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 23353455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 23363455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 23373455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23383455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23393455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 23403455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 23413455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 23423455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 23433455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 23443455ce614424a5a23a23037e23d0454e476bceeaIan Romanick glsl_struct_field *const fields = (glsl_struct_field *) 23453455ce614424a5a23a23037e23d0454e476bceeaIan Romanick malloc(sizeof(*fields) * decl_count); 23463455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23473455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 23482b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 23492b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 23503455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 23513455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23523455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 23533455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23543455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 23553455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 23563455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23572b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 23582b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 23593455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const struct glsl_type *const field_type = 23603455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (decl->is_array) 23613455ce614424a5a23a23037e23d0454e476bceeaIan Romanick ? process_array_type(decl_type, decl->array_size, state) 23623455ce614424a5a23a23037e23d0454e476bceeaIan Romanick : decl_type; 23633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 236473986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 236573986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 23663455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 23673455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 23683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 23693455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 23703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23713455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 23723455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23731d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick const char *name; 23741d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick if (this->name == NULL) { 23751d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick static unsigned anon_count = 1; 23761d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick char buf[32]; 23773455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 23781d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick snprintf(buf, sizeof(buf), "#anon_struct_%04x", anon_count); 23791d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick anon_count++; 23801d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 23811d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = strdup(buf); 23821d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } else { 23831d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = this->name; 23841d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } 23851d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 23861d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick glsl_type *t = new glsl_type(fields, decl_count, name); 23871d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 2388ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 2389ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if (!state->symbols->add_type(name, t)) { 2390ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 2391ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2392ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick /* This logic is a bit tricky. It is an error to declare a structure at 2393ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick * global scope if there is also a function with the same name. 2394ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick */ 2395ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if ((state->current_function == NULL) 2396ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick && (state->symbols->get_function(name) != NULL)) { 2397ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "name `%s' previously defined", name); 2398ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2399ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick t->generate_constructor(state->symbols); 2400ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 2401a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 2402a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 2403a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 2404a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 2405a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 2406a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 2407a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 2408a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 2409a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 2410a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 2411ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 24123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 24143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 24153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 24163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 2417