ast_to_hir.cpp revision e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcf
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 51412c411504ca86341f8b96c349c15413ee198cc71Carl Worth var->type = glsl_type::get_array_instance(state, 51512c411504ca86341f8b96c349c15413ee198cc71Carl Worth lhs->type->element_type(), 5160157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 5170157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 51810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 51910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5202731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 5212731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 5222731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 5232731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5242731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 5252731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5262731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 5272731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 5282731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 5292731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 5301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp"); 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 5455185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5465185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick/** 5475185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick * Generate a new temporary and add its declaration to the instruction stream 5485185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick */ 5495185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanickstatic ir_variable * 5505185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanickgenerate_temporary(const glsl_type *type, exec_list *instructions, 5515185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick struct _mesa_glsl_parse_state *state) 5525185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick{ 553953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 5545185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick char *name = (char *) malloc(sizeof(char) * 13); 5555185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5565185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick snprintf(name, 13, "tmp_%08X", state->temp_index); 5575185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick state->temp_index++; 5585185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_variable *const var = new(ctx) ir_variable(type, name); 5605185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick instructions->push_tail(var); 5615185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5625185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick return var; 5635185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick} 5645185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 5655185a5f7d5654c9202c226015c4daeee43d9b897Ian Romanick 566de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 567959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 568de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 5691660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 570de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 571de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 572de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* FINISHME: Give unique names to the temporaries. */ 5731660a2954797e056caba319c5d6c70b0d4be22feCarl Worth var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp"); 574de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->mode = ir_var_auto; 575de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5761660a2954797e056caba319c5d6c70b0d4be22feCarl Worth instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), 5771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth lvalue, NULL)); 578de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 579de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Once we've created this temporary, mark it read only so it's no 580de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * longer considered an lvalue. 581de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 582de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt var->read_only = true; 583de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 5841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 585de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt} 586de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 587de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 588fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 5890044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_node::hir(exec_list *instructions, 59018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 59118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick{ 59218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) instructions; 59318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (void) state; 59418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 59518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick return NULL; 59618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick} 59718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 59818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick 599fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 6000044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression::hir(exec_list *instructions, 60118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 602a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 603953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 604a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick static const int operations[AST_NUM_OPERATORS] = { 605a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_assign doesn't convert to ir_expression. */ 606a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_plus doesn't convert to ir_expression. */ 607a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_neg, 608a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, 609a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, 610a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, 611a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, 612a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, 613a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, 614a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, 615a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_less, 616a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_greater, 617a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lequal, 618a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_gequal, 619a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_equal, 620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_nequal, 621a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, 622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, 623a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, 624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_bit_not, 625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_and, 626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_xor, 627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_logic_or, 628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_unop_logic_not, 629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Note: The following block of expression types actually convert 631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * to multiple IR instructions. 632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mul, /* ast_mul_assign */ 634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_div, /* ast_div_assign */ 635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_mod, /* ast_mod_assign */ 636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_add, /* ast_add_assign */ 637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_sub, /* ast_sub_assign */ 638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_lshift, /* ast_ls_assign */ 639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_rshift, /* ast_rs_assign */ 640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_and, /* ast_and_assign */ 641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_xor, /* ast_xor_assign */ 642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick ir_binop_bit_or, /* ast_or_assign */ 643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_conditional doesn't convert to ir_expression. */ 645de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_pre_inc. */ 646de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_pre_dec. */ 647de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_add, /* ast_post_inc. */ 648de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_binop_sub, /* ast_post_dec. */ 649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_field_selection doesn't conv to ir_expression. */ 650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_array_index doesn't convert to ir_expression. */ 651a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_function_call doesn't conv to ir_expression. */ 652a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_identifier doesn't convert to ir_expression. */ 653a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_int_constant doesn't convert to ir_expression. */ 654a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_uint_constant doesn't conv to ir_expression. */ 655a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_float_constant doesn't conv to ir_expression. */ 656a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_bool_constant doesn't conv to ir_expression. */ 657a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick -1, /* ast_sequence doesn't convert to ir_expression. */ 658a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick }; 659fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *result = NULL; 660fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunke ir_rvalue *op[2]; 6610471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick const struct glsl_type *type = glsl_type::error_type; 662a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool error_emitted = false; 663a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick YYLTYPE loc; 664a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 66518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick loc = this->get_location(); 666a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 66718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick switch (this->oper) { 6686652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick case ast_assign: { 66918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 67018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 671a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 67210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt result = do_assignment(instructions, state, op[0], op[1], 67310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 67410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = result->type->is_error(); 67510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 676a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 6776652af36fe8994b1621d882fcc230d320908a2a3Ian Romanick } 678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 679a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_plus: 68018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 681a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 682a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick error_emitted = op[0]->type->is_error(); 683a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick if (type->is_error()) 684a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick op[0]->type = type; 685a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 686a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick result = op[0]; 687a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 688a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 689a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_neg: 69018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 691a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 69265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = unary_arithmetic_result_type(op[0]->type, state, & loc); 693a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 69465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 695a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 6961660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 6971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 698a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 699a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 700a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add: 701a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub: 702a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul: 703a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div: 70418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 70518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 706a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 707bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 70818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul), 709a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 710a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt error_emitted = type->is_error(); 711a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 714a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 715a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 716a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mod: 71718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 71818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 719a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 72065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 721a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 72218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick assert(operations[this->oper] == ir_binop_mod); 723a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7241660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7251660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 72665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 727a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 728a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 729a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lshift: 730a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rshift: 731183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-shift operators"); 732183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 733a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 734a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 735a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_less: 736a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_greater: 737a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_lequal: 738a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_gequal: 73918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 74018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 741a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 74265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = relational_result_type(op[0], op[1], state, & loc); 743a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 744a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The relational operators must either generate an error or result 745a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * in a scalar boolean. See page 57 of the GLSL 1.50 spec. 746a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 747a43817a483a8c4a480ef4e6dfda2cef899300eb0Ian Romanick assert(type->is_error() 748a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || ((type->base_type == GLSL_TYPE_BOOL) 749cb36f8aaeeb09660843316270a781948f773d90bIan Romanick && type->is_scalar())); 750a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7511660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], type, 7521660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 75365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 754a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 755a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 756a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_nequal: 757a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_equal: 7586e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 7596e659caaa946339a2de3890a8bed091ccb65102aIan Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 7606e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7616e659caaa946339a2de3890a8bed091ccb65102aIan Romanick /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: 7626e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * 7636e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * "The equality operators equal (==), and not equal (!=) 7646e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * operate on all types. They result in a scalar Boolean. If 7656e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * the operand types do not match, then there must be a 7666e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * conversion from Section 4.1.10 "Implicit Conversions" 7676e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * applied to one operand that can make them match, in which 7686e659caaa946339a2de3890a8bed091ccb65102aIan Romanick * case this conversion is done." 7696e659caaa946339a2de3890a8bed091ccb65102aIan Romanick */ 770bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[0]->type, op[1], state) 771bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[1]->type, op[0], state)) 772212b0327b47033442842a7be3d7fb10e08e2bf66Ian Romanick || (op[0]->type != op[1]->type)) { 7736e659caaa946339a2de3890a8bed091ccb65102aIan Romanick _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " 7746e659caaa946339a2de3890a8bed091ccb65102aIan Romanick "type", (this->oper == ast_equal) ? "==" : "!="); 7756e659caaa946339a2de3890a8bed091ccb65102aIan Romanick error_emitted = true; 776a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick } else if ((state->language_version <= 110) 777a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick && (op[0]->type->is_array() || op[1]->type->is_array())) { 778a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick _mesa_glsl_error(& loc, state, "array comparisons forbidden in " 779a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick "GLSL 1.10"); 780a80cbd6d82f6ec4c1d16129581d5fa893a6ba94fIan Romanick error_emitted = true; 7816e659caaa946339a2de3890a8bed091ccb65102aIan Romanick } 7826e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 7841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 7856e659caaa946339a2de3890a8bed091ccb65102aIan Romanick type = glsl_type::bool_type; 7866e659caaa946339a2de3890a8bed091ccb65102aIan Romanick 7876e659caaa946339a2de3890a8bed091ccb65102aIan Romanick assert(result->type == glsl_type::bool_type); 788a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 789a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 790a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_and: 791a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_xor: 792a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_or: 793a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bit_not: 794183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, "FINISHME: implement bit-wise operators"); 795183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 796a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 797a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 7984950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_and: { 799b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 800b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 801b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 802b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 803b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 804b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 805b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt operator_string(this->oper)); 806ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 807b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt } 808b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 80944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 81044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 81144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 81244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 81344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 81444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 81544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 81644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 81744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 81844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 81944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 82044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 82144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 82244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 82344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 82444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 82544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 82644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 82744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 8281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 82944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8304950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 83144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8324950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 83344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 83444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 83644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 83744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 83844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 83944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 84044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 841b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 84244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_variable *const tmp = generate_temporary(glsl_type::bool_type, 84344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions, state); 844b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 8451660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 84644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 8471660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 84844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8494950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8501660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 85144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 8521660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 85344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 8544950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8551660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 85644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 85744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8584950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 8594950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8604950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8614950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 8624950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 8634950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8644950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 8654950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 8664950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8674950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 8684950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 8694950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 8704950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8714950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 87344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 87444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 87544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 87644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 87744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 87844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 87944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 88044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 88144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 88244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 88344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 88444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 88544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 88644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 88744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 88844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 88944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 89044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 8911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 89244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8934950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 89444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_variable *const tmp = generate_temporary(glsl_type::bool_type, 89544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions, state); 8964950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 89744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8984950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 89944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 90044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 9014950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 90344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 90444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 90544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9064950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9071660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 90844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 9091660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 91044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 9114950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 91344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 9141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 91544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 9164950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9171660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 91844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 91944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9204950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 9214950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9224950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9234950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 9244950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 9254950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 9264950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9274950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9291660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 930ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 931a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 932a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 933a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 934a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 935a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 936a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 937a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 938a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 939a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 940a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 941ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 942a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 943a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 9441660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9451660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 946ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 947a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 948a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 949a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 950a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 951a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 952a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 95318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 95418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 955a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 956bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 95718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 958a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9601660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9611660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 962a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9633e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 964ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 96510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 96610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 96710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 968a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 969a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 970a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 971a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 973a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 975a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 97748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 97848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 97948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 98048a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 98165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 98248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 98348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 98448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 98548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt struct ir_rvalue *temp_rhs; 9861660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 98848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 9893e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 990ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 99148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 99248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 99365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 99448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 99548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 996a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 997a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 998a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rs_assign: 999183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1000183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement bit-shift assignment operators"); 1001183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1002251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1003a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1004a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 1005a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 1006a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_or_assign: 1007183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1008183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement logic assignment operators"); 1009183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1010251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1011a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 101296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 101396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 101496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 101596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 101696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 101796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 101896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 101996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 102096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 102196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 102296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 102396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 102496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 102596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 102696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 102796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 102896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 102996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 103096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 103196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 103296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 10330ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 10340ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 103596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10360ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 10370ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 103896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 103996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 104096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 104196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 104296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 104396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 104496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 104596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 104696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 104796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1048bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1049bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1050db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 105196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 105296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 105396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 105496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 105596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 10560ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1057db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 10580ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 105996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 106096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10617825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 10627825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 10637825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 10647825d3d15710fdfcfc503754862963aac8065480Ian Romanick 10657825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 10667825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 10677825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 10687825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 10697825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 10707825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_variable *const tmp = generate_temporary(type, 10717825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions, state); 10720ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10731660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 10747825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 10750ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10767825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 10771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 10781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10797825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 10801660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 10817825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 10820ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10837825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 10841660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 10851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10867825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 10871660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 10887825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 10890ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 10917825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1092251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 109396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1094a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1095a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 109676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 109776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 109876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 10991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 110076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 11011660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 110276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1103a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 110476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 110576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt struct ir_rvalue *temp_rhs; 11061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11071660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 110876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 11093e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 1110ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 111176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 111276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 111376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 111476ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 111576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1116a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1117a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1118de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1119de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1120de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 11211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1122de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 11231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1124de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1125de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1126de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1127a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1128de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1129de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt struct ir_rvalue *temp_rhs; 11301660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11311660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1132de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1133de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1134de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1135de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 1136ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick result = get_lvalue_copy(instructions, op[0]->clone(NULL)); 1137de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 11383e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 1139ca088cc277ce9f986693c857f3961dc0e1a4d91cIan Romanick op[0]->clone(NULL), temp_rhs, 1140de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1141de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1142de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1143de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1144a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1145de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1146a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1147a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 114818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1149a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1150a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1151a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 115227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 115327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 115427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 115527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 115627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 115727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 115827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 115927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1160a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1161b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 11621660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1163b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1164b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1165b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1166b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1167b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 116827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 116927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 117027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 117127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 117263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 117363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 117463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 117527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 117663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 117763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 117827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 117927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 118027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 118127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 118227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 118327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 118427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 118527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 118627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 118727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 118827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 118927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 119027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 119127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 119227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 119327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 119427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 119527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 119627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 119727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 119827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 119963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 120063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 120163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 120263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 120363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 120463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 120563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 120663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 120763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 120863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 120927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 121027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 121127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 121227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 121327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 121427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 121527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 121627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 121727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 121863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 121963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 122063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 122163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 122263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 122363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 122463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 122563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 122663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 122763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 122863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 122963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 123063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 123127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 123227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 123363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 123463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 123563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 123663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 123763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 123863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 123963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 124027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 124127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1242b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 124363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1244a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1245a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1246a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1247a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1248a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1249a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1250a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 125163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 125263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 125363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 125427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 125527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 125627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 125727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 125827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 125927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1260a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 126127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1262a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1263a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 12647cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 12657cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1266a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12677cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1268a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1271a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1272a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1273a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1274a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12758bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 12768bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1277a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1279a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1280a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1282a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 128371d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 128418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1285a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1286a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1287a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1290a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1291a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 12920471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 12931660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1295a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 12970471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 12981660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1299a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1300a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 13020471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 13031660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1305a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1306a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 13070471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 13081660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1309a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1310a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1311a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1312a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1314a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1315304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1317a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1318a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1319a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 13222b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1323304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1324a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1325a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1326a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1329a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1330a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1331a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1334cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 133571d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1341fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13420044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 134318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1348a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 135418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 135518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1358a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1359a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1361a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1362a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1363fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13640044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 136518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 136718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13688bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 13702b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1371304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1372a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 137318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13748bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1375a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1377a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1378a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1380a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1381a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 138228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 138328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickprocess_array_type(const glsl_type *base, ast_node *array_size, 138428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 138528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 138628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 138728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 138828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 138928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 139128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 139228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 139328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 139428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 139628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 139728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 139828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 139928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 140028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 140128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 140228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 140328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 140428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 140528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 140628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 140728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 140828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 140928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 141028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 141128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 141228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 141328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 141428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 141528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 141628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 141728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 141828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 141928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 142028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 142112c411504ca86341f8b96c349c15413ee198cc71Carl Worth return glsl_type::get_array_instance(state, base, length); 142228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 142328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 142428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1425d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1426d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1427d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1428a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1429d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1430a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 14313455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if ((this->type_specifier == ast_struct) && (this->type_name == NULL)) { 1432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle annonymous structures. */ 1433a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = NULL; 1434a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1435d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = state->symbols->get_type(this->type_name); 1436d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick *name = this->type_name; 1437a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1438d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick if (this->is_array) { 1439d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = process_array_type(type, this->array_size, state); 144028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1441a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1442a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1443a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1445a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1446a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1447a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var, 14502e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 14512e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1452a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1453a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->invariant) 1454a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->invariant = 1; 1455a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1456a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1457a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->constant || qual->attribute || qual->uniform 1458a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1459a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1460a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1461a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->centroid) 1462a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1463a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1464ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick if (qual->attribute && state->target != vertex_shader) { 14652e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 14662e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 14672e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1468ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1469ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 14702e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 14712e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 147290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 147390b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 147490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 147590b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 147690b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 147790b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 14780ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (qual->varying) { 14790ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 14800ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14810ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 14820ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 14830ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 14840ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 14850ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14860ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 14870ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 14880ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 14890ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 14900ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 149190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 149290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 1493a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->in && qual->out) 1494a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1495a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->attribute || qual->in 1496a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1497a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 14980b678234625fac67a89285ad2871dedc891fb1b1Ian Romanick else if (qual->out || (qual->varying && (state->target == vertex_shader))) 1499a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1500a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->uniform) 1501a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1502a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1503a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_auto; 1504a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 150571df19f5ef6e78beb5160801f81468184b75447eEric Anholt if (qual->uniform) 150671df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 1507c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick 1508c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick /* Any 'in' or 'inout' variables at global scope must be marked as being 1509c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * shader inputs. Likewise, any 'out' or 'inout' variables at global scope 1510c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick * must be marked as being shader outputs. 1511c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick */ 1512c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick if (state->current_function == NULL) { 1513c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick switch (var->mode) { 1514c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_in: 1515c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_uniform: 1516c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_in = true; 1517c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1518c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_out: 1519c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick var->shader_out = true; 1520c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1521c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick case ir_var_inout: 152271df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_in = true; 152371df19f5ef6e78beb5160801f81468184b75447eEric Anholt var->shader_out = true; 1524c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1525c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick default: 1526c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick break; 1527c96822cf311d764a3cf6a2c62145851e8326c896Ian Romanick } 152871df19f5ef6e78beb5160801f81468184b75447eEric Anholt } 152971df19f5ef6e78beb5160801f81468184b75447eEric Anholt 1530a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->flat) 1531a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1532a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->noperspective) 1533a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1534a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1535a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 15369d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 15379d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick if (var->type->is_array() && (state->language_version >= 120)) { 15389d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 15399d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 1540a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1541a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1542a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1543fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 15440044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 154518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1546a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1547953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1548a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 1549a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 15508558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 1551c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 1552a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 15546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 15566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 15576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 15586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 15606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 15626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 15636f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 15646f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 15656f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 15666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 15686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 15706f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 15716f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 15746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 15756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 15766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 15776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 15796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 15806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 15816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 15836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 15846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 15856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 15866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 15886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 15896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 15906f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 15916f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15926f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 15936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 15946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 15956f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 15966f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15976f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15986f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15996f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 16006f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 16016f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 16026f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16036f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16046f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 16056f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 16066f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 16083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 16093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 16103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 16113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 1612d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 1613304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 16146f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 16156f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 16166f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 1617c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 1618c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 16196f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 1620c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 1621c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 1622c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1623c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16252b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 1626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 1627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick struct ir_variable *var; 1628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1629a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 1630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1633cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 1634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 1637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 1638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 1641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 1642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1643a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1645a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1646a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 164728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick var_type = process_array_type(decl_type, decl->array_size, state); 1648a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 1650a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1651a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16521660a2954797e056caba319c5d6c70b0d4be22feCarl Worth var = new(ctx) ir_variable(var_type, decl->identifier); 1653a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 16553f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 16573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 16583f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 16593f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16603f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 16613f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16623f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * This is relaxed in GLSL 1.30. 16633f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 16643f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (state->language_version < 120) { 16653f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.out) { 16663f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16673f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 16683f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16693f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16703f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16713f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.in) { 16723f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16733f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 16743f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16753f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16763f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16773f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 16783f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16793f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 16802e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 16812e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 1682a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->type->qualifier.invariant) { 16846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if ((state->target == vertex_shader) && !var->shader_out) { 16856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 16876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 16886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) && !var->shader_in) { 16896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16906f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 16916f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 16926f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 1695e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 1696b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 1697e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 1698b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1699e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 1700e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 1701e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 1702e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (this->type->qualifier.attribute) { 1703b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 1704b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.uniform) { 1705b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 1706b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.varying) { 1707b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 1708e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.in) { 1709e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 1710e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1711e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.out) { 1712e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 1713e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1714b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 1715b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1716b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 1717e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 1718b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 1719e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 1720e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 1721e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 1722e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 1723fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 1724fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 1725fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1726fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 1727fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1728fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 1729fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 1730fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 1731fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 1732fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 17332d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 17342d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 17352d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 17362d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 17372d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 17382d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 1739fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 1740fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1741fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 1742fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 1743fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 1744fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 1745fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 1746fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 1747fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1748fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 1749fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 1750fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1751fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 1752fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 1753fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 1754fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1755fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 1756fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 1757fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1758fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1759fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 1760fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 1761fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 1762fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1763fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1764fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 17652d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 1766fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 1767fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1768fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1769fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 1770fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1771fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1772fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1773fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1774fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1775e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 1776e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 1777e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 1778e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 1779e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 1780e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 1781e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick exec_list intializer_instructions; 178266faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 178343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 178443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 178566faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 178666faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 178766faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 178866faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 178966faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 179066faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 179166faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 179266faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 179343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 179443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 179543de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 179643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 179743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 179843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 179943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 180043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 180119360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 180243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 180343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 180443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 1805ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 180643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 180743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 180866faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 180966faec4895b7bb59a614087a200c05157191b4aeIan Romanick 18101660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 1811e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick ir_rvalue *rhs = decl->initializer->hir(&intializer_instructions, 1812e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 181319360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 1814ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 1815307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 181666faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 1817ce030884064046925a655413097dd8257e9392ddIan Romanick if (this->type->qualifier.constant || this->type->qualifier.uniform) { 1818326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 1819326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt if (!constant_value) { 1820307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt _mesa_glsl_error(& initializer_loc, state, 1821ce030884064046925a655413097dd8257e9392ddIan Romanick "initializer of %s variable `%s' must be a " 1822307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt "constant expression", 1823ce030884064046925a655413097dd8257e9392ddIan Romanick (this->type->qualifier.constant) 1824ce030884064046925a655413097dd8257e9392ddIan Romanick ? "const" : "uniform", 1825307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt decl->identifier); 1826326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt } else { 1827326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt rhs = constant_value; 1828326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt var->constant_value = constant_value; 1829307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 1830307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 183166faec4895b7bb59a614087a200c05157191b4aeIan Romanick 1832307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 1833ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 1834ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt if (this->type->qualifier.constant) 1835ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 1836ce030884064046925a655413097dd8257e9392ddIan Romanick 1837ce030884064046925a655413097dd8257e9392ddIan Romanick /* Never emit code to initialize a uniform. 1838ce030884064046925a655413097dd8257e9392ddIan Romanick */ 1839ce030884064046925a655413097dd8257e9392ddIan Romanick if (!this->type->qualifier.uniform) 1840e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick result = do_assignment(&intializer_instructions, state, lhs, rhs, 1841ce030884064046925a655413097dd8257e9392ddIan Romanick this->get_location()); 1842ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 184366faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 184466faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 184517d86f4371da413176ba365ca26a58bac172d365Ian Romanick 18460ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 18470ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 18480ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 18490ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 18500ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 18510ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 18520ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt if (this->type->qualifier.constant && decl->initializer == NULL) { 18530ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 18540ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 18550ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 18560ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 18575466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* Attempt to add the variable to the symbol table. If this fails, it 18585466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * means the variable has already been declared at this scope. Arrays 18595466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * fudge this rule a little bit. 18605466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18615466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 18625466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18635466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "It is legal to declare an array without a size and then 18645466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * later re-declare the same name as an array of the same 18655466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * type and specify a size." 18665466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18675466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (state->symbols->name_declared_this_scope(decl->identifier)) { 18685466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick ir_variable *const earlier = 18695466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick state->symbols->get_variable(decl->identifier); 18705466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 18715466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if ((earlier != NULL) 18725466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (earlier->type->array_size() == 0) 18735466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 18745466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 18755466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 18765466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 18775466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 18785466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18795466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 1880cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 1881cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 1882cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 1883cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 1884cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 1885127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 1886cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 1887127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 1888cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 1889cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 1890cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 1891cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 1892127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 189312873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 18945466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 18955466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 18965466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 18975466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 18985466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 18995466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19005466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19015466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 19025466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 19035466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 19045466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 19055466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 19065466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19075466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "`%s' redeclared", 19085466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19105466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19115466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 19125466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19135466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 19155466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 19165466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 19175466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 19185466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 19195466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19205466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) { 19215466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This should only trigger if we're not redefining 19225466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: a builtin (to add a qualifier, for example). 19235466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19245466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 19255466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 19265466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19275466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19285466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19292e85f993d8a014b53ad2f6d295cf66d3fb38b091Ian Romanick instructions->push_tail(var); 1930e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick instructions->append_list(&intializer_instructions); 19312e85f993d8a014b53ad2f6d295cf66d3fb38b091Ian Romanick 1932c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke /* Add the variable to the symbol table after processing the initializer. 193317d86f4371da413176ba365ca26a58bac172d365Ian Romanick * This differs from most C-like languages, but it follows the GLSL 193417d86f4371da413176ba365ca26a58bac172d365Ian Romanick * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 193517d86f4371da413176ba365ca26a58bac172d365Ian Romanick * spec: 193617d86f4371da413176ba365ca26a58bac172d365Ian Romanick * 193717d86f4371da413176ba365ca26a58bac172d365Ian Romanick * "Within a declaration, the scope of a name starts immediately 193817d86f4371da413176ba365ca26a58bac172d365Ian Romanick * after the initializer if present or immediately after the name 193917d86f4371da413176ba365ca26a58bac172d365Ian Romanick * being declared if not." 194017d86f4371da413176ba365ca26a58bac172d365Ian Romanick */ 194117d86f4371da413176ba365ca26a58bac172d365Ian Romanick const bool added_variable = 1942c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke state->symbols->add_variable(var->name, var); 194317d86f4371da413176ba365ca26a58bac172d365Ian Romanick assert(added_variable); 1944a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1945a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19468558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 19478558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 19488558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 19498558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19508558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 19518558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 19528558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 19538558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19548558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 1955a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 19568558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 1957a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1958a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1960fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 19610044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 196218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1963a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1964953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1965a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 1966a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 19672e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 1968a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1969d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 1970a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1971a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 1972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 1973a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 197518238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 1976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1978a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 197918238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 1980a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1981a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19820471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 1983a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1984a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1985068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 1986068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1987068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 1988068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 1989068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 1990068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 1991068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 1992068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 1993068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 1994068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 1995068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 1996068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 1997cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 1998cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 1999cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2000cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2001cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2002cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2003068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2004cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2005068c80cfe0a280490353b6b007165d717c672eedEric Anholt 200645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 200745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 200845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 200945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 201045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2011cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 20121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_variable *var = new(ctx) ir_variable(type, this->identifier); 2013a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2014a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle array declarations. Note that this requires 2015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: complete handling of constant expressions. 2016a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2017a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2018cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2019cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2020cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 20212e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2022cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick if (var->mode == ir_var_auto) 2023cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick var->mode = ir_var_in; 2024a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20250044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2026a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2027a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2028a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2029a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2030a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2031a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2032a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 203345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2034304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 203545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 203645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 203745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2038a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2039cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2040cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2041a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20422b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 204345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2044068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2045cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2046cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2047cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2048cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2049cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2050cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2051cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2052cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2053cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2054cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2055cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2056cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2057a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2058a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2059a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2060a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2061fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 206292318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 206392318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2064a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2065953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 206618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 206792318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 206892318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2069a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2070ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2071a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2072a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2073a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2074a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2075a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 207645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 207745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 207845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2079a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2080e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2081e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 208292318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2083e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2084e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick assert(return_type != NULL); 2085e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2086ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2087ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2088ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2089ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2090ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2091ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2092ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2093ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2094ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2095a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2096a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2097a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2098a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 20993359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick f = state->symbols->get_function(name); 2100a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (f != NULL) { 21010d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke ir_function_signature *sig = f->exact_matching_signature(&hir_parameters); 21020d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 21030d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 21040d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 21050d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2106abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 21070d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 21080d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 21090d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 21101e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 21110d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 21120d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 211360be7626b829af7e1d07330b9a88468924ba350eEric Anholt 21140d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 21150d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 21160d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2117a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21180d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 21190d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2120a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21210d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 21220d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke sig = NULL; 2123a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2124a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 21253359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else if (state->symbols->name_declared_this_scope(name)) { 21263359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* This function name shadows a non-function use of the same name. 21273359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 21283359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 21293359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 21303359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "function name `%s' conflicts with " 21313359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick "non-function", name); 213292318a947958892497722772b03c643ebc943294Ian Romanick sig = NULL; 2133a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 21341660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 21358bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->add_function(f->name, f); 21369fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 21379fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Emit the new function header */ 21389fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke instructions->push_tail(f); 2139a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2140a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2141ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2142ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 214325711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2144ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2145ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2146ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2147ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2148174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 214992318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2150174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2151174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2152174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2153174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2154ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2155a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2156a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2157a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 215892318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 21591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 216092318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2161a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2162a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2163bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 216492318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 216592318a947958892497722772b03c643ebc943294Ian Romanick 216692318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 216792318a947958892497722772b03c643ebc943294Ian Romanick */ 216892318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 216992318a947958892497722772b03c643ebc943294Ian Romanick} 217092318a947958892497722772b03c643ebc943294Ian Romanick 217192318a947958892497722772b03c643ebc943294Ian Romanick 217292318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 217392318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 217492318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 217592318a947958892497722772b03c643ebc943294Ian Romanick{ 217692318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 217792318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2178e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 217992318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2180a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 218141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 218241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 21836de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 218441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2185e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2186e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2187a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 21888bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2189e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2190fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2191e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2192fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2193a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21943359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 21953359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 21963359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 21973359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 21983359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 21993359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 22003359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 22013359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 22023359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick state->symbols->add_variable(var->name, var); 22033359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2204a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2205a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22069fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2207894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 22089fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22108bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2211a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 221241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 221341ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2214a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22156de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 22166de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 22176de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 22186de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 22196de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 22206de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 22216de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 22226de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2223a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2224a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2225a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2226a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 222716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 222816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2229fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 223016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 223116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 223216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 2233953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 223416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2235c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2236c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 223716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 2238aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 223916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 224016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 2241ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 2242ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 2243ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 2244ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 2245ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 2246ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 2247ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 2248f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2249ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 225016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 225116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_expression *const ret = (ir_expression *) 225216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick opt_return_value->hir(instructions, state); 225316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 225416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 225518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 225618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 225718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 225818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 225918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 226018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 226118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 226218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 226318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 226418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 226518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 226616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 22671660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 226816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 2269aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 2270aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 2271aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 2272aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 2273aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 2274aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 2275aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 2276f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2277aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 22781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 227916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 228016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 22816de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 228216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 2283c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 228416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 228516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2286c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 2287b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 2288b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 2289b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 2290b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 2291b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 2292b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 229377049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 2294c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2295c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 2296c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 2297c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 22984cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 22994cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 23004cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 23014cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 23024cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 23034cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 23044cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 23054cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 23064cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 23074cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23084cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 23094cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 23104cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 23114cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 23124cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 23134cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23144cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 23154cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 23161660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 23171660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 23181660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 23194cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 23204cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23214cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23224cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 2323c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2324b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2325b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 232616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 232716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 232816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 232916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 23303c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23313c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23323c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 23333c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 23343c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 23353c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 2336953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 23371660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 23383c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 23393c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23403c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 23413c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23423c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 23433c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 23443c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 23453c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23463c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 23473c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 23483c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 23493c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 23503c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 23513c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23523c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 23533c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 23543c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 23553c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 23573c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23584f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (then_statement != NULL) 23594f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 23603c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23614f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (else_statement != NULL) 23624f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 23633c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23643c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 23653c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23663c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 23673c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 23683c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 23693c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 23709e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23719e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23728c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 23738c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 23748c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 23759e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 2376953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 23771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 23789e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 23799e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 23809e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 23819e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23829e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 23839e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 23849e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 23859e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23869e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 23879e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 23889e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 23899e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 23909e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 23919e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 23929e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 23931660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 23941660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 23959e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23961660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 23979e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 23989e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 23991660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 24009e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24019e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 24029e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 24039e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24049e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24058c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 24068c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24078c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24088c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 24098c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 24108c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 24118c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 2412953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 24131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 2414484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 24158c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 2416484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24178c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 24188c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24198c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 24208c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 24218c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24221660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 24238c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 24248c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24258c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 24268c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 24278c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 24288c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 24298c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24308c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 24318c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24329e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24334f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 24344f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 24359e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24369e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 24379e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 24389e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24398c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 24408c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24418c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 2442484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24439e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 24449e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 2445e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 2446e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 2447e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 2448e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 24499e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 24509e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 24519e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 24529e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 24533455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24543455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24553455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 24563455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 24573455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 24583455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 24593455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 24603455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 246185ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 246285ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 24633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 24643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24653455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24663455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 24673455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 24683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 24693455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 24703455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 24713455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24723455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 24733455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 24743455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 24753455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 24763455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 24772b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 24782b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 2479304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 24803455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 24813455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 24823455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 24833455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24843455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24853455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 24863455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 24873455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 24883455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 24893455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 24903455ce614424a5a23a23037e23d0454e476bceeaIan Romanick glsl_struct_field *const fields = (glsl_struct_field *) 24913455ce614424a5a23a23037e23d0454e476bceeaIan Romanick malloc(sizeof(*fields) * decl_count); 24923455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24933455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 24942b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 24952b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 24963455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 24973455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 24983455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 24993455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25003455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 25013455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 25023455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25032b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 25042b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 25053455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const struct glsl_type *const field_type = 25063455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (decl->is_array) 25073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick ? process_array_type(decl_type, decl->array_size, state) 25083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick : decl_type; 25093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 251073986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 251173986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 25123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 25133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 25143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25163455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25173455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 25183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25191d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick const char *name; 25201d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick if (this->name == NULL) { 25211d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick static unsigned anon_count = 1; 25221d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick char buf[32]; 25233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25241d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick snprintf(buf, sizeof(buf), "#anon_struct_%04x", anon_count); 25251d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick anon_count++; 25261d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 25271d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = strdup(buf); 25281d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } else { 25291d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = this->name; 25301d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } 25311d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 253249e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 253349e3577b91f44013746f7a3db411e7041b7d899eIan Romanick glsl_type::get_record_instance(fields, decl_count, name); 25341d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 2535ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 2536ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if (!state->symbols->add_type(name, t)) { 2537ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 2538ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2539ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick /* This logic is a bit tricky. It is an error to declare a structure at 2540ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick * global scope if there is also a function with the same name. 2541ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick */ 2542ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if ((state->current_function == NULL) 2543ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick && (state->symbols->get_function(name) != NULL)) { 2544ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "name `%s' previously defined", name); 2545ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2546ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick t->generate_constructor(state->symbols); 2547ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 2548a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 2549a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 2550a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 2551a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 2552a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 2553a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 2554a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 2555a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 2556a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 2557a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 2558ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 25593455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25603455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 25613455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 25623455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 25633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 2564