ast_to_hir.cpp revision 2d1ed7b1b112cf13dd7eda7f500691f4c98a1ccc
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); 63c22c40015db32b68b33c4944b9d94bf499135ec5Eric Anholt _mesa_glsl_initialize_functions(instructions, state); 64adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick 6541ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 6641ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 672b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, & state->translation_unit) 68304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 69d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick} 70d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 71d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 720104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick/** 730104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is available, convert one operand to a different type 740104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 750104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * The \c from \c ir_rvalue is converted "in place". 760104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 770104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param to Type that the operand it to be converted to 780104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param from Operand that is being converted 790104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param state GLSL compiler state 800104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 810104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \return 820104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is possible (or unnecessary), \c true is returned. 830104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * Otherwise \c false is returned. 840104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 850104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanickstatic bool 86bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickapply_implicit_conversion(const glsl_type *to, ir_rvalue * &from, 870104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick struct _mesa_glsl_parse_state *state) 880104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick{ 89953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 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 112506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke /* Convert to a floating point type with the same number of components 113506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke * as the original type - i.e. int to float, not int to vec4. 114506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke */ 115506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke to = glsl_type::get_instance(GLSL_TYPE_FLOAT, from->type->vector_elements, 116506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke from->type->matrix_columns); 117506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke 118bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick switch (from->type->base_type) { 1190104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_INT: 1201660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_i2f, to, from, NULL); 1210104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1220104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_UINT: 1231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_u2f, to, from, NULL); 1240104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1250104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_BOOL: 1261660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_b2f, to, from, NULL); 127dc58b3f8ccd817fdee390a3df5b8e0fb29d5397cEric Anholt break; 1280104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick default: 1290104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick assert(0); 1300104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick } 1310104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1320104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 1330104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick} 1340104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1350104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 136a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 137bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickarithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 138a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool multiply, 139a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 140a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 141336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 142336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 1430104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 144a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 145a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 146a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic binary operators add (+), subtract (-), 147a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * multiply (*), and divide (/) operate on integer and 148a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * floating-point scalars, vectors, and matrices." 149a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 15060b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick if (!type_a->is_numeric() || !type_b->is_numeric()) { 151a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 152a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Operands to arithmetic operators must be numeric"); 1530471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 154a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 155a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 156a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 157a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If one operand is floating-point based and the other is 158a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * not, then the conversions from Section 4.1.10 "Implicit 159a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Conversions" are applied to the non-floating-point-based operand." 160a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1610104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 1620104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 163a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 164a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Could not implicitly convert operands to " 165a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "arithmetic operator"); 1660104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return glsl_type::error_type; 167a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 168336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 169336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 170336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 171a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If the operands are integer types, they must both be signed or 172a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both be unsigned." 173a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 174a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * From this rule and the preceeding conversion it can be inferred that 175a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT. 17660b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * The is_numeric check above already filtered out the case where either 17760b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * type is not one of these, so now the base types need only be tested for 17860b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * equality. 179a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 180a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_a->base_type != type_b->base_type) { 181a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 182a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "base type mismatch for arithmetic operator"); 1830471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 184a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 185a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 186a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All arithmetic binary operators result in the same fundamental type 187a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (signed integer, unsigned integer, or floating-point) as the 188a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands they operate on, after operand type conversion. After 189a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * conversion, the following cases are valid 190a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 191a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The two operands are scalars. In this case the operation is 192a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * applied, resulting in a scalar." 193a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 194cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar() && type_b->is_scalar()) 195a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 196a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 197a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* One operand is a scalar, and the other is a vector or matrix. 198a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case, the scalar operation is applied independently to each 199a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component of the vector or matrix, resulting in the same size 200a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector or matrix." 201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 202cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar()) { 203cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (!type_b->is_scalar()) 204a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 205cb36f8aaeeb09660843316270a781948f773d90bIan Romanick } else if (type_b->is_scalar()) { 206a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 207a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 210a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been 211a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * handled. 212a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 21360b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_a->is_scalar()); 21460b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_b->is_scalar()); 215a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 216a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The two operands are vectors of the same size. In this case, the 217a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operation is done component-wise resulting in the same size 218a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector." 219a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 220a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector() && type_b->is_vector()) { 221a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) { 222a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 223a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } else { 224a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 225a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "vector size mismatch for arithmetic operator"); 226a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 227a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } 228a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 230a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 231a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and 232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <vector, vector> have been handled. At least one of the operands must 233a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * be matrix. Further, since there are no integer matrix types, the base 234a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * type of both operands must be float. 235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23660b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(type_a->is_matrix() || type_b->is_matrix()); 237a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_a->base_type == GLSL_TYPE_FLOAT); 238a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_b->base_type == GLSL_TYPE_FLOAT); 239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The operator is add (+), subtract (-), or divide (/), and the 241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands are matrices with the same number of rows and the same 242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * number of columns. In this case, the operation is done component- 243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise resulting in the same size matrix." 244a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The operator is multiply (*), where both operands are matrices or 245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * one operand is a vector and the other a matrix. A right vector 246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand is treated as a column vector and a left vector operand as a 247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * row vector. In all these cases, it is required that the number of 248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * columns of the left operand is equal to the number of rows of the 249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * right operand. Then, the multiply (*) operation does a linear 250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * algebraic multiply, yielding an object that has the same number of 251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * rows as the left operand and the same number of columns as the right 252a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand. Section 5.10 "Vector and Matrix Operations" explains in 253a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * more detail how vectors and matrices are operated on." 254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 255a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (! multiply) { 256a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) 257a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 258a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 259fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick if (type_a->is_matrix() && type_b->is_matrix()) { 260c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* Matrix multiply. The columns of A must match the rows of B. Given 261c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the other previously tested constraints, this means the vector type 262c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of a row from A must be the same as the vector type of a column from 263c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 264c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 265c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b->column_type()) { 266c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* The resulting matrix has the number of columns of matrix B and 267c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the number of rows of matrix A. We get the row count of A by 268c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * looking at the size of a vector that makes up a column. The 269c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * transpose (size of a row) is done for B. 270c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 271a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt const glsl_type *const type = 272c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick glsl_type::get_instance(type_a->base_type, 273c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_a->column_type()->vector_elements, 274c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_b->row_type()->vector_elements); 275a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt assert(type != glsl_type::error_type); 276a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 277a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type; 278a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 279fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick } else if (type_a->is_matrix()) { 280a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* A is a matrix and B is a column vector. Columns of A must match 281c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * rows of B. Given the other previously tested constraints, this 282c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * means the vector type of a row from A must be the same as the 283c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * vector the type of B. 284a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 285c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b) 286a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 287a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 288fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick assert(type_b->is_matrix()); 289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 290c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* A is a row vector and B is a matrix. Columns of A must match rows 291c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of B. Given the other previously tested constraints, this means 292c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the type of A must be the same as the vector type of a column from 293c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 295c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a == type_b->column_type()) 296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 298a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 299a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); 300a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 302a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 303a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All other cases are illegal." 305a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 306a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3070471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 308a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 309a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 310a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 311a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 31265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholtunary_arithmetic_result_type(const struct glsl_type *type, 31365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 314a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 315a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 57: 316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 317a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic unary operators negate (-), post- and pre-increment 318a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * and decrement (-- and ++) operate on integer or floating-point 319a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * values (including vectors and matrices). All unary operators work 320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component-wise on their operands. These result with the same type 321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * they operated on." 322a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 32365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (!type->is_numeric()) { 32465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 32565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to arithmetic operators must be numeric"); 3260471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 32765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 329a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 330a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 331a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 334a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickmodulus_result_type(const struct glsl_type *type_a, 33565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt const struct glsl_type *type_b, 33665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The operator modulus (%) operates on signed or unsigned integers or 340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * integer vectors. The operand types must both be signed or both be 341a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * unsigned." 342a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 34340176e249f72b6090204611873b19aed3da67c71Ian Romanick if (!type_a->is_integer() || !type_b->is_integer() 344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->base_type != type_b->base_type)) { 34565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3460471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 348a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operands cannot be vectors of differing size. If one operand is 350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * a scalar and the other vector, then the scalar is applied component- 351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise to the vector, resulting in the same type as the vector. If both 352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * are vectors of the same size, the result is computed component-wise." 353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 354a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector()) { 355a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (!type_b->is_vector() 356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->vector_elements == type_b->vector_elements)) 357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 358a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else 359a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 361a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operator modulus (%) is not defined for any other data types 362a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (non-integer types)." 363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 36465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3650471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 370bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickrelational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 37165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 372a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 373336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 374336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 3750150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick 376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 377a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The relational operators greater than (>), less than (<), greater 378a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * than or equal (>=), and less than or equal (<=) operate only on 379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * scalar integer and scalar floating-point expressions." 380a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 381a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick if (!type_a->is_numeric() 382a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick || !type_b->is_numeric() 383cb36f8aaeeb09660843316270a781948f773d90bIan Romanick || !type_a->is_scalar() 38465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt || !type_b->is_scalar()) { 38565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 38665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to relational operators must be scalar and " 38765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "numeric"); 3880471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 38965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 390a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 391a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "Either the operands' types must match, or the conversions from 392a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Section 4.1.10 "Implicit Conversions" will be applied to the integer 393a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand, after which the types must match." 394a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 3950150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 3960150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 39765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 39865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Could not implicitly convert operands to " 39965e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "relational operator"); 4000150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick return glsl_type::error_type; 401a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 402336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 403336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 404a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 40565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (type_a->base_type != type_b->base_type) { 40665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "base type mismatch"); 4070471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 40865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 409a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 410a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The result is scalar Boolean." 411a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4120471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::bool_type; 413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 414a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 415a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 4160bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick/** 4170bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that a value can be assigned to a location with a specified type 4180bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4190bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that \c rhs can be assigned to some location. If the types are 4200bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * not an exact match but an automatic conversion is possible, \c rhs will be 4210bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * converted. 4220bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4230bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \return 4240bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. 4250bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Otherwise the actual RHS to be assigned will be returned. This may be 4260bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c rhs, or it may be \c rhs after some type conversion. 4270bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4280bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \note 4290bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * In addition to being used for assignments, this function is used to 4300bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * type-check return values. 4310bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 432fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 433336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholtvalidate_assignment(struct _mesa_glsl_parse_state *state, 434336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *lhs_type, ir_rvalue *rhs) 4350bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick{ 436336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *rhs_type = rhs->type; 4370bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4380bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If there is already some error in the RHS, just return it. Anything 4390bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * else will lead to an avalanche of error message back to the user. 4400bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4410bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type->is_error()) 4420bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4430bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4440bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If the types are identical, the assignment can trivially proceed. 4450bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4460bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type == lhs_type) 4470bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4480bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4490157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the array element types are the same and the size of the LHS is zero, 4500157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the assignment is okay. 4510157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * 4520157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * Note: Whole-array assignments are not permitted in GLSL 1.10, but this 4530157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is handled by ir_dereference::is_lvalue. 4540157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4550157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs_type->is_array() && rhs->type->is_array() 4560157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->element_type() == rhs->type->element_type()) 4570157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->array_size() == 0)) { 4580157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick return rhs; 4590157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 4600157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 461336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt /* Check for implicit conversion in GLSL 1.20 */ 462336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (apply_implicit_conversion(lhs_type, rhs, state)) { 463336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt rhs_type = rhs->type; 464336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (rhs_type == lhs_type) 465336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt return rhs; 466336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt } 467336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 4680bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return NULL; 4690bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick} 4700bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 47110a685218610e737e23d2d8a243ed6ff6613becdEric Anholtir_rvalue * 47210a685218610e737e23d2d8a243ed6ff6613becdEric Anholtdo_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, 47310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_rvalue *lhs, ir_rvalue *rhs, 47410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt YYLTYPE lhs_loc) 47510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt{ 476953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 47710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); 47810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 47910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!error_emitted) { 48010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt /* FINISHME: This does not handle 'foo.bar.a.b.c[5].d = 5' */ 48110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!lhs->is_lvalue()) { 48210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 48310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 48410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 48510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 48610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 487336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 48810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 48910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 49010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 49110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 4920157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 4930157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 4940157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 4950157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 4960157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 4970157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4980157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 4990157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 5000157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5010157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 5020157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 50336ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 5040157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5050157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 5060157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 50763f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 50863f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 50963f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 51063f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 51163f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 51263f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 51363f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 514f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 5150157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 5160157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 51710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 51810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5192731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 5202731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 5212731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 5222731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5232731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 5242731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5252731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 5262731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 5272731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 5282731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 5297e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", 5307e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 531e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); 532ae805922b7e3cdaf3aee26c3b799fe3608669bbaEric Anholt instructions->push_tail(var); 533e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt instructions->push_tail(new(ctx) ir_assignment(deref_var, 5341660a2954797e056caba319c5d6c70b0d4be22feCarl Worth rhs, 5351660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 536e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var = new(ctx) ir_dereference_variable(var); 5372731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt 5381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(lhs, 539e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var, 5401660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 54110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5421660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 54310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 5440bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 545de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 546959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 547de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 5481660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 549de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 550de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 551de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* FINISHME: Give unique names to the temporaries. */ 5527e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", 5537e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 55443b5b03d67ce890e867c81d4a5cfc4871d711d43Eric Anholt instructions->push_tail(var); 555de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 556de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5571660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), 5581660a2954797e056caba319c5d6c70b0d4be22feCarl Worth lvalue, NULL)); 559de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 560de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 561de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 562de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 563de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 564de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5651660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 566de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 567de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 568de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 569fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 5700044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 57118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 57218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 57318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 57418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 57518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 57618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 57718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 57818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 57918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 580fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 5810044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 58218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 583a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 584953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 585a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 586a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 587a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 588a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 589a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 590a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 591a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 592a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 593a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 594a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 595a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 596a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 597a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 598a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 599a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 600a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_equal, 601a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_nequal, 602a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 603a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 604a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 605a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 606a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 607a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 608a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 609a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 610a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 611a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 612a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 613a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 614a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 617a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 619a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 626de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 627de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 628de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 629de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 640fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 641fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *op[2]; 6420471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 645a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 64618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 64818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 6496652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 65018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 65118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 65310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 65410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 65510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 65610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 6586652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 659a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 660a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 66118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 663c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth type = unary_arithmetic_result_type(op[0]->type, state, & loc); 664c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth 665c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth error_emitted = type->is_error(); 666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 667a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 668a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 669a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 670a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 67118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 672a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 67365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 674a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 67565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 6771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 6781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 680a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 681a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 683a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 68518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 68618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 687a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 688bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 68918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 690a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 691a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 692a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 6931660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 6941660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 695a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 696a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 697a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 69818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 69918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 700a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 70165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 702a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 70318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 704a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 70765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 708a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 709a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 710a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 711a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 712183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-shift operators"); 713183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 716a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 717a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 718a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 719a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 72018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 72118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 722a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 72365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 724a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 725a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 726a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 727a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 728a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 729a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 730cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 731a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7321660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7331660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 73465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 735a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 736a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 737a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 738a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 7396e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 7406e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 7416e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7426e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 7436e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 7446e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 7456e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 7466e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 7476e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 7486e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 7496e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 7506e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 751bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 752bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 753212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 7546e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 7556e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 7566e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 757a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 758a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 759a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 760a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 761a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 7626e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 7636e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 7651660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 7666e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 7676e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7686e659caaa946339a2de3890a8bed091ccb65102aIan Romanick assert(result->type == glsl_type::bool_type); 769a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 770a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 771a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 772a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 773a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 774a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 775183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-wise operators"); 776183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 777a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 778a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7794950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 780b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 781b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 782b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 783b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 784b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 785b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 786b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 787ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 788b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 789b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 79044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 79144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 79244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 79344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 79444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 79544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 79644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 79744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 79844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 79944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 80044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 80144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 80244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 80344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 80444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 80544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 80644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 80744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 80844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 80981d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 8107e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "and_tmp", 8117e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 81281d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(tmp); 81381d664f099a5fd5fac777480532fb4307d591451Ian Romanick 8141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 81544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8164950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 81744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8184950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 81944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 82044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8214950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 82244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 82344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 82444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 82544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 82644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 827b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 8281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 82944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 8301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 83144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8324950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8331660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 83444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 8351660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 83644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 8374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8381660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 83944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 84044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8414950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 8424950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8434950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8444950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 8454950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 8464950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8474950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 8484950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 8494950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8504950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 8514950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 8524950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 8534950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8544950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 85544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 85644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 85744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 85844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 85944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 86044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 86144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 86244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 86344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 86444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 86544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 86644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 86744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 86844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 86944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 87044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 87144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 87244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 87344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 874dfd30ca6a95a7d95835dad78ffe1fba4d1f4ef69Kenneth Graunke ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 8757e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "or_tmp", 8767e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 8770b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 8784950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87981d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_if *const stmt = new(ctx) ir_if(op[0]); 88081d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(stmt); 88181d664f099a5fd5fac777480532fb4307d591451Ian Romanick 88244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8834950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 88444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 88544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8864950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 88744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 88844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 88944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 89044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8914950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8921660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 89344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 8941660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 89544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8964950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 89844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 8991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 90044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 9014950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9021660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 90344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 90444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9054950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 9064950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9074950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9084950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 9094950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 9104950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 9114950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9124950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 915ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 916a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 917a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 918a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 919a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 920a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 921a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 922a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 923a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 924a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 925a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 926ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 927a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 928a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 9291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 931ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 932a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 933a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 934a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 935a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 936a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 937a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 93818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 93918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 940a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 941bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 94218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 943a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 944a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9451660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9461660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 947a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9483e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 949ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 95010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 95110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 95210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 953a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 954a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 955a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 957a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 960a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 961a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 96248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 96348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 96448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 96548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 96665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 96748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 96848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 96948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 97048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt struct ir_rvalue *temp_rhs; 9711660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9721660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 97348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 9743e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 975ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 97648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 97748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 97865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 97948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 98048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 981a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 982a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 983a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rs_assign: 984183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 985183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement bit-shift assignment operators"); 986183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 987251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 988a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 989a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 990a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 991a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_or_assign: 992183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 993183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement logic assignment operators"); 994183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 995251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 99796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 99896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 99996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 100096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 100196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 100296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 100396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 100496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 100596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 100696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 100796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 100896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 100996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 101096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 101196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 101296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 101396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 101496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 101596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 101696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 101796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 10180ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 10190ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 102096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10210ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 10220ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 102396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 102496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 102596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 102696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 102796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 102896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 102996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 103096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 103196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 103296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1033bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1034bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1035db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 103696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 103796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 103896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 103996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 104096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 10410ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1042db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 10430ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 104496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 104596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10467825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 10477825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 10487825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 10497825d3d15710fdfcfc503754862963aac8065480Ian Romanick 10507825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 10517825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 10527825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 10537825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 10547825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 10557e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *const tmp = 10567e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); 10570b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 10580ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 10607825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 10610ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10627825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 10631660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 10641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10657825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 10661660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 10677825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 10680ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10697825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 10701660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 10711660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10727825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 10731660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 10747825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 10750ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10761660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 10777825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1078251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 107996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1080a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1081a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 108276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 108376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 108476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 10851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 108676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 10871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 108876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1089a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 109076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 109176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt struct ir_rvalue *temp_rhs; 10921660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 10931660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 109476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 10953e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 1096ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 109776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 109876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 109976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 110076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 110176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1102a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1103a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1104de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1105de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1106de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 11071660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1108de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 11091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1110de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1111de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1112de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1113a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1114de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1115de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt struct ir_rvalue *temp_rhs; 11161660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11171660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1118de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1119de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1120de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1121de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 1122ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick result = get_lvalue_copy(instructions, op[0]->clone(NULL)); 1123de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 11243e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 1125ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 1126de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1127de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1128de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1129de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1130a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1131de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1132a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1133a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 113418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1135a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1136a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1137a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 113827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 113927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 114027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 114127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 114227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 114327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 114427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 114527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1146a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1147b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 11481660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1149b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1150b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1151b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1152b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1153b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 115427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 115527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 115627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 115727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 115863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 115963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 116063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 116127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 116263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 116363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 116427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 116527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 116627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 116727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 116827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 116927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 117027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 117127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 117227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 117327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 117427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 117527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 117627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 117727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 117827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 117927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 118027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 118127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 118227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 118327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 118427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 118563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 118663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 118763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 118863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 118963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 119063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 119163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 119263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 119363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 119463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 119527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 119627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 119727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 119827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 119927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 120027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 120127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 120227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 120327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 120463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 120563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 120663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 120763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 120863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 120963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 121063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 121163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 121263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 121363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 121463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 121563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 121663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 121727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 121827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 121963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 122063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 122163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 122263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 122363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 122463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 122563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 122627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 122727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1228b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 122963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1230a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1231a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1232a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1233a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1234a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1235a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1236a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 123763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 123863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 123963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 12402b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke } else if (array->type->array_size() == 0) { 12412b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke _mesa_glsl_error(&loc, state, "unsized array index must be constant"); 124227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 124327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 124427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 124527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 124627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 124727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 124927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 12527cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 12537cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12557cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1256a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1257a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1258a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1259a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1260a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1261a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1262a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12638bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 12648bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1265a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12661660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1267a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1268a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 127171d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 127218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1273a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1274a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1275a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1276a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1277a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1278a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1279a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 12800471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 12811660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1282a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1283a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1284a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 12850471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 12861660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1287a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 12900471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 12911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1292a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1293a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 12950471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 12961660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1298a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1299a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1300a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1302a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1303304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1305a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1306a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1307a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1308a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1309a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 13102b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1311304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1312a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1314a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1315a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1317a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1318a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1319a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1322cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 132371d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1324a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1325a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1326a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1329fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13300044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 133118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1334a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1335a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1341a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 134218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 134318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1348a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1351fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13520044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 135318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1354a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 135518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13568bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 13582b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1359304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 136118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13628bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1364a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1365a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 137028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 137128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickprocess_array_type(const glsl_type *base, ast_node *array_size, 137228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 137328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 137428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 137528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 137628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 137728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 137828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 137928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 138028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 138128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 138228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 138328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 138428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 138528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 138628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 138728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 138828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 138928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 139028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 139128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 139228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 139328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 139428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 139528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 139728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 139828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 139928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 140028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 140128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 140228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 140328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 140428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 140528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 140628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 140728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 140828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1409f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick return glsl_type::get_array_instance(base, length); 141028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 141128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 141228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1413d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1414d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1415d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1416a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1417d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1418a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 14193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if ((this->type_specifier == ast_struct) && (this->type_name == NULL)) { 1420a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle annonymous structures. */ 1421a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = NULL; 1422a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1423d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = state->symbols->get_type(this->type_name); 1424d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick *name = this->type_name; 1425a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1426d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick if (this->is_array) { 1427d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = process_array_type(type, this->array_size, state); 142828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1429a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1430a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1431a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1433a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1434a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1435a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1436a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1437a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var, 14382e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 14392e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1440a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1441a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->invariant) 1442a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->invariant = 1; 1443a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1445a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->constant || qual->attribute || qual->uniform 1446a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1447a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->centroid) 1450a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1451a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1452ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick if (qual->attribute && state->target != vertex_shader) { 14532e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 14542e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 14552e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1456ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1457ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 14582e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 14592e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 146090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 146190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 146290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 146390b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 146490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 146590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 14660ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (qual->varying) { 14670ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 14680ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14690ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 14700ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 14710ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 14720ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 14730ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14740ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 14750ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 14760ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 14770ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 14780ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 147990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 148090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 14817e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick /* If there is no qualifier that changes the mode of the variable, leave 14827e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick * the setting alone. 14837e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick */ 1484a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->in && qual->out) 1485a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1486a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->attribute || qual->in 1487a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1488a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 14890b678234625fac67a89285ad2871dedc891fb1b1Ian Romanick else if (qual->out || (qual->varying && (state->target == vertex_shader))) 1490a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1491a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->uniform) 1492a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1493a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 149471df19f5ef6e78beb5160801f81468184b75447eEric Anholt if (qual->uniform) 149571df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 1496c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick 1497c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick /* Any 'in' or 'inout' variables at global scope must be marked as being 1498c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * shader inputs. Likewise, any 'out' or 'inout' variables at global scope 1499c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * must be marked as being shader outputs. 1500c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick */ 1501c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick if (state->current_function == NULL) { 1502c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick switch (var->mode) { 1503c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_in: 1504c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_uniform: 1505c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_in = true; 1506c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1507c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_out: 1508c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_out = true; 1509c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1510c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_inout: 151171df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 151271df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_out = true; 1513c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1514c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick default: 1515c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1516c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick } 151771df19f5ef6e78beb5160801f81468184b75447eEric Anholt } 151871df19f5ef6e78beb5160801f81468184b75447eEric Anholt 1519a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->flat) 1520a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1521a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->noperspective) 1522a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1523a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1524a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 15259d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 15269d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick if (var->type->is_array() && (state->language_version >= 120)) { 15279d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 15289d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 1529a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1530a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1531a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1532fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 15330044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 153418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1535a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1536953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1537a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 1538a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 15398558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 1540c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 1541a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15426f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 15436f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15446f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 15456f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 15466f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 15476f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15486f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 15496f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15506f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 15516f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 15526f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 15536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 15546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 15556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 15576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 15596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 15606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 15636f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 15646f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 15656f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 15666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 15686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 15696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 15706f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15716f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 15726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 15736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 15746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 15756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 15776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 15786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 15796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 15806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 15826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 15836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 15846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 15856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 15896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 15906f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 15916f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15926f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 15946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 15956f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15963455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 15973455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 15983455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 15993455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 16003455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 1601d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 1602304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 16036f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 16046f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 16056f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 1606c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 1607c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 16086f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 1609c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 1610c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 1611c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1612c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1613a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16142b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 1615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 1616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var; 1617a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 1619a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 1620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1622cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 1623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 1626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 1627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 1630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 163628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick var_type = process_array_type(decl_type, decl->array_size, state); 1637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 1639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16417e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); 1642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16433f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 16443f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16453f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 16463f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 16473f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 16483f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16493f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 16503f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16513f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * This is relaxed in GLSL 1.30. 16523f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 16533f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (state->language_version < 120) { 16543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.out) { 16553f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 16573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16583f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16593f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16603f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.in) { 16613f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16623f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 16633f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16643f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16653f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16663f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 16673f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16683f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 16692e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 16702e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 1671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->type->qualifier.invariant) { 16736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if ((state->target == vertex_shader) && !var->shader_out) { 16746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 16766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 16776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) && !var->shader_in) { 16786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 16806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 16816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 1684e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 1685b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 1686e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 1687b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1688e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 1689e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 1690e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 1691e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (this->type->qualifier.attribute) { 1692b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 1693b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.uniform) { 1694b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 1695b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.varying) { 1696b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 1697e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.in) { 1698e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 1699e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1700e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.out) { 1701e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 1702e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1703b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 1704b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1705b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 1706e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 1707b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 1708e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 1709e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 1710e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 1711e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 1712fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 1713fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 1714fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1715fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 1716fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1717fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 1718fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 1719fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 1720fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 1721fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 17222d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 17232d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 17242d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 17252d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 17262d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 17272d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 1728fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 1729fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1730fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 1731fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 1732fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 1733fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 1734fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 1735fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 1736fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1737fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 1738fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 1739fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1740fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 1741fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 1742fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 1743fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1744fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 1745fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 1746fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1747fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1748fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 1749fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 1750fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 1751fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1752fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1753fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 17542d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 1755fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 1756fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1757fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1758fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 1759fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1760fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1761fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1762fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1763fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1764e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 1765e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 1766e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 1767e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 1768e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 1769e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 1770e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick exec_list intializer_instructions; 177166faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 177243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 177343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 177466faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 177566faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 177666faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 177766faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 177866faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 177966faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 178066faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 178166faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 178243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 178343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 178443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 178543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 178643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 178743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 178843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 178943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 179019360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 179143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 179243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 179343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 1794ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 179543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 179643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 179766faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 179866faec4895b7bb59a614087a200c05157191b4aeIan Romanick 17991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 1800e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick ir_rvalue *rhs = decl->initializer->hir(&intializer_instructions, 1801e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 180219360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 1803ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 1804307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 180566faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 1806ce030884064046925a655413097dd8257e9392ddIan Romanick if (this->type->qualifier.constant || this->type->qualifier.uniform) { 1807e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); 1808e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke if (new_rhs != NULL) { 1809e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs = new_rhs; 1810e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } else { 1811e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke _mesa_glsl_error(&initializer_loc, state, 1812e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "initializer of type %s cannot be assigned to " 1813e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "variable of type %s", 1814e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs->type->name, var->type->name); 1815e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } 1816e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke 1817326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 1818326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt if (!constant_value) { 1819307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt _mesa_glsl_error(& initializer_loc, state, 1820ce030884064046925a655413097dd8257e9392ddIan Romanick "initializer of %s variable `%s' must be a " 1821307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt "constant expression", 1822ce030884064046925a655413097dd8257e9392ddIan Romanick (this->type->qualifier.constant) 1823ce030884064046925a655413097dd8257e9392ddIan Romanick ? "const" : "uniform", 1824307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt decl->identifier); 1825326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt } else { 1826326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt rhs = constant_value; 1827326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt var->constant_value = constant_value; 1828307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 1829307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 183066faec4895b7bb59a614087a200c05157191b4aeIan Romanick 1831307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 1832ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 1833ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt if (this->type->qualifier.constant) 1834ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 1835ce030884064046925a655413097dd8257e9392ddIan Romanick 1836ce030884064046925a655413097dd8257e9392ddIan Romanick /* Never emit code to initialize a uniform. 1837ce030884064046925a655413097dd8257e9392ddIan Romanick */ 1838ce030884064046925a655413097dd8257e9392ddIan Romanick if (!this->type->qualifier.uniform) 1839e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick result = do_assignment(&intializer_instructions, state, lhs, rhs, 1840ce030884064046925a655413097dd8257e9392ddIan Romanick this->get_location()); 1841ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 184266faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 184366faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 184417d86f4371da413176ba365ca26a58bac172d365Ian Romanick 18450ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 18460ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 18470ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 18480ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 18490ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 18500ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 18510ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt if (this->type->qualifier.constant && decl->initializer == NULL) { 18520ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 18530ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 18540ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 18550ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 18565466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* Attempt to add the variable to the symbol table. If this fails, it 18575466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * means the variable has already been declared at this scope. Arrays 18585466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * fudge this rule a little bit. 18595466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18605466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 18615466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18625466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "It is legal to declare an array without a size and then 18635466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * later re-declare the same name as an array of the same 18645466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * type and specify a size." 18655466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18665466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (state->symbols->name_declared_this_scope(decl->identifier)) { 18675466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick ir_variable *const earlier = 18685466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick state->symbols->get_variable(decl->identifier); 18695466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 18705466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if ((earlier != NULL) 18715466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (earlier->type->array_size() == 0) 18725466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 18735466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 18745466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 18755466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 18765466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 18775466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18785466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 1879cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 1880cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 1881cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 1882cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 1883cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 1884127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 1885cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 1886127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 1887cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 1888cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 1889cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 1890cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 1891127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 189212873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 18935466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 18945466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 18955466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 18965466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 18975466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 18985466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 18995466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19005466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 19015466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 19025466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 19035466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 19045466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 19055466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19065466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "`%s' redeclared", 19075466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19085466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19105466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 19115466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19125466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19135466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 19145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 19155466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 19165466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 19175466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 19185466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19195466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) { 19205466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This should only trigger if we're not redefining 19215466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: a builtin (to add a qualifier, for example). 19225466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19235466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 19245466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 19255466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19265466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19275466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19282e85f993d8a014b53ad2f6d295cf66d3fb38b091Ian Romanick instructions->push_tail(var); 1929e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick instructions->append_list(&intializer_instructions); 19302e85f993d8a014b53ad2f6d295cf66d3fb38b091Ian Romanick 1931c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke /* Add the variable to the symbol table after processing the initializer. 193217d86f4371da413176ba365ca26a58bac172d365Ian Romanick * This differs from most C-like languages, but it follows the GLSL 193317d86f4371da413176ba365ca26a58bac172d365Ian Romanick * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 193417d86f4371da413176ba365ca26a58bac172d365Ian Romanick * spec: 193517d86f4371da413176ba365ca26a58bac172d365Ian Romanick * 193617d86f4371da413176ba365ca26a58bac172d365Ian Romanick * "Within a declaration, the scope of a name starts immediately 193717d86f4371da413176ba365ca26a58bac172d365Ian Romanick * after the initializer if present or immediately after the name 193817d86f4371da413176ba365ca26a58bac172d365Ian Romanick * being declared if not." 193917d86f4371da413176ba365ca26a58bac172d365Ian Romanick */ 194017d86f4371da413176ba365ca26a58bac172d365Ian Romanick const bool added_variable = 1941c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke state->symbols->add_variable(var->name, var); 194217d86f4371da413176ba365ca26a58bac172d365Ian Romanick assert(added_variable); 1943a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1944a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19458558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 19468558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 19478558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 19488558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19498558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 19508558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 19518558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 19528558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19538558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 1954a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 19558558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 1956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1957a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1959fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 19600044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 196118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1962a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1963953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1964a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 1965a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 19662e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 1967a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1968d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 1969a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1970a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 1971a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 1972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1973a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 197418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 1975a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 197818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 1979a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1980a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19810471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 1982a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1983a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1984068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 1985068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1986068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 1987068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 1988068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 1989068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 1990068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 1991068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1992068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 1993068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 1994068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 1995068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 1996cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 1997cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 1998cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 1999cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2000cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2001cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2002068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2003cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2004068c80cfe0a280490353b6b007165d717c672eedEric Anholt 200545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 200645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 200745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 200845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 200945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2010cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 20117e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); 2012a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2013a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle array declarations. Note that this requires 2014a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: complete handling of constant expressions. 2015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2016a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2017cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2018cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2019cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 20202e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2021a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20220044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2023a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2024a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2025a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2026a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2027a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2028a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2029a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 203045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2031304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 203245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 203345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 203445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2035a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2036cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2037cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2038a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20392b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 204045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2041068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2042cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2043cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2044cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2045cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2046cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2047cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2048cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2049cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2050cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2051cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2052cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2053cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2054a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2055a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2056a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2057a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2058fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 205992318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 206092318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2061a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2062953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 206318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 206492318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 206592318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2066a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2067ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2068a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2069a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2070a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2071a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2072a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 207345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 207445d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 207545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2076a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2077e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2078e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 207992318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2080e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2081e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick assert(return_type != NULL); 2082e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2083ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2084ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2085ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2086ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2087ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2088ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2089ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2090ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2091ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2092a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2093a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2094a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2095a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 20963359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick f = state->symbols->get_function(name); 2097a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (f != NULL) { 20980d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke ir_function_signature *sig = f->exact_matching_signature(&hir_parameters); 20990d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 21000d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 21010d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 21020d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2103abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 21040d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 21050d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 21060d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 21071e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 21080d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 21090d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 211060be7626b829af7e1d07330b9a88468924ba350eEric Anholt 21110d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 21120d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 21130d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2114a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21150d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 21160d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2117a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21180d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 21190d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke sig = NULL; 2120a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2121a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 21223359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else if (state->symbols->name_declared_this_scope(name)) { 21233359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* This function name shadows a non-function use of the same name. 21243359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 21253359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 21263359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 21273359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "function name `%s' conflicts with " 21283359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick "non-function", name); 212992318a947958892497722772b03c643ebc943294Ian Romanick sig = NULL; 2130a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 21311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 21328bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->add_function(f->name, f); 21339fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 21349fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Emit the new function header */ 21359fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke instructions->push_tail(f); 2136a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2137a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2138ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2139ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 214025711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2141ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2142ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2143ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2144ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2145174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 214692318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2147174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2148174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2149174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2150174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2151ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2152a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2153a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2154a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 215592318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 21561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 215792318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2158a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2159a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2160bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 216192318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 216292318a947958892497722772b03c643ebc943294Ian Romanick 216392318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 216492318a947958892497722772b03c643ebc943294Ian Romanick */ 216592318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 216692318a947958892497722772b03c643ebc943294Ian Romanick} 216792318a947958892497722772b03c643ebc943294Ian Romanick 216892318a947958892497722772b03c643ebc943294Ian Romanick 216992318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 217092318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 217192318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 217292318a947958892497722772b03c643ebc943294Ian Romanick{ 217392318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 217492318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2175e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 217692318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2177a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 217841ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 217941ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 21806de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 218141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2182e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2183e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2184a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 21858bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2186e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2187fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2188e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2189fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2190a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21913359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 21923359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 21933359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 21943359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 21953359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 21963359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 21973359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 21983359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 21993359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick state->symbols->add_variable(var->name, var); 22003359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2202a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22039fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2204894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 22059fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2206a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22078bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 220941ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 221041ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2211a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22126de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 22136de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 22146de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 22156de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 22166de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 22176de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 22186de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 22196de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2220a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2221a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2222a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2223a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 222416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 222516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2226fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 222716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 222816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 222916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 2230953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 223116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2232c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2233c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 223416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 2235aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 223616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 223716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 2238ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 2239ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 2240ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 2241ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 2242ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 2243ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 2244ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 2245f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2246ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 224716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 224816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_expression *const ret = (ir_expression *) 224916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick opt_return_value->hir(instructions, state); 225016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 225116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 225218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 225318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 225418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 225518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 225618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 225718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 225818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 225918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 226018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 226118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 226218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 226316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 22641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 226516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 2266aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 2267aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 2268aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 2269aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 2270aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 2271aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 2272aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 2273f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2274aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 22751660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 227616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 227716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 22786de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 227916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 2280c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 228116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 228216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2283c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 2284b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 2285b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 2286b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 2287b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 2288b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 2289b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 229077049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 2291c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2292c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 2293c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 2294c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 22954cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 22964cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 22974cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 22984cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 22994cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 23004cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 23014cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 23024cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 23034cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 23044cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23054cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 23064cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 23074cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 23084cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 23094cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 23104cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23112d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt /* Inline the for loop expression again, since we don't know 23122d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * where near the end of the loop body the normal copy of it 23132d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * is going to be placed. 23142d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt */ 23152d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt if (mode == ast_continue && 23162d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression) { 23172d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, 23182d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state); 23192d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt } 23202d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 23214cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 23224cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 23231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 23241660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 23251660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 23264cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 23274cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23284cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23294cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 2330c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2331b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2332b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 233316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 233416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 233516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 233616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 23373c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23383c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23393c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 23403c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 23413c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 23423c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 2343953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 23441660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 23453c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 23463c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23473c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 23483c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23493c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 23503c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 23513c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 23523c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23533c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 23543c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 23553c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 23563c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 23573c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 23583c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23593c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 23603c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 23613c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 23623c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23631660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 23643c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23654f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (then_statement != NULL) 23664f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 23673c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23684f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (else_statement != NULL) 23694f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 23703c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23713c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 23723c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23733c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 23743c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 23753c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 23763c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 23779e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23789e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23798c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 23808c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 23818c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 23829e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 2383953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 23841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 23859e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 23869e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 23879e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 23889e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23899e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 23909e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 23919e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 23929e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23939e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 23949e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 23959e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 23969e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 23979e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 23989e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 23999e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 24001660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 24011660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 24029e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24031660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 24049e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24059e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 24061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 24079e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24089e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 24099e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 24109e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24119e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24128c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 24138c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24148c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24158c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 24168c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 24178c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 24188c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 2419953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 24201660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 2421484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 24228c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 2423484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24248c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 24258c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24268c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 24278c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 24288c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 24308c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 24318c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24328c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 24338c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 24348c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 24352d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; 24362d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 24378c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 24382d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = this; 24398c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24408c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 24418c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24429e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24434f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 24444f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 24459e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24469e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 24479e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 24489e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24498c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 24508c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24518c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 2452484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24539e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 24549e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 2455e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 2456e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 2457e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 24582d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = nesting_ast; 2459e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 24609e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 24619e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 24629e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 24639e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 24643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24653455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24663455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 24673455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 24683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 24693455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 24703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 24713455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 247285ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 247385ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 24743455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 24753455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24763455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24773455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 24783455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 24793455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 24803455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 24813455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 24823455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24833455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 24843455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 24853455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 24863455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 24873455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 24882b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 24892b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 2490304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 24913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 24923455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 24933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 24943455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24953455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24963455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 24973455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 24983455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 24993455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 25003455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 250121b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, 250221b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt decl_count); 25033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25043455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 25052b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 25062b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 25073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 25083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 25103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 25123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 25133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25142b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 25152b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 25163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const struct glsl_type *const field_type = 25173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (decl->is_array) 25183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick ? process_array_type(decl_type, decl->array_size, state) 25193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick : decl_type; 25203455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 252173986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 252273986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 25233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 25243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 25253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25273455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25283455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 25293455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25301d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick const char *name; 25311d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick if (this->name == NULL) { 25321d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick static unsigned anon_count = 1; 25331d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick char buf[32]; 25343455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25351d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick snprintf(buf, sizeof(buf), "#anon_struct_%04x", anon_count); 25361d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick anon_count++; 25371d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 25381d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = strdup(buf); 25391d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } else { 25401d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = this->name; 25411d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } 25421d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 254349e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 254449e3577b91f44013746f7a3db411e7041b7d899eIan Romanick glsl_type::get_record_instance(fields, decl_count, name); 25451d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 2546ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 2547ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if (!state->symbols->add_type(name, t)) { 2548ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 2549ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2550ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick /* This logic is a bit tricky. It is an error to declare a structure at 2551ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick * global scope if there is also a function with the same name. 2552ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick */ 2553ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if ((state->current_function == NULL) 2554ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick && (state->symbols->get_function(name) != NULL)) { 2555ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "name `%s' previously defined", name); 2556ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2557ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick t->generate_constructor(state->symbols); 2558ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 2559a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 2560a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 2561a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 2562a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 2563a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 2564a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 2565a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 2566a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 2567a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 2568a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 2569ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 25703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25713455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 25723455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 25733455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 25743455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 2575