ast_to_hir.cpp revision 665d75cc5a23f8024034d0c4176fb281f94a30e9
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" 534a962170d7cf4243d6ae156fca20a6167388925dEric Anholt#include "main/extensions.h" 548bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick#include "glsl_symbol_table.h" 55a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "glsl_parser_extras.h" 56a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "ast.h" 57a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "glsl_types.h" 58a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick#include "ir.h" 59a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 60d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanickvoid 61d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) 62d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick{ 63adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick _mesa_glsl_initialize_variables(instructions, state); 64c22c40015db32b68b33c4944b9d94bf499135ec5Eric Anholt _mesa_glsl_initialize_functions(instructions, state); 65adfb0cd7401251bef0c854ac945fce78f0ed11dbIan Romanick 6641ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 6741ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 682b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, & state->translation_unit) 69304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 70d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick} 71d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 72d949a9afb0a01e9678a4343f66b056b41a2e48a9Ian Romanick 730104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick/** 740104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is available, convert one operand to a different type 750104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 760104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * The \c from \c ir_rvalue is converted "in place". 770104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 780104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param to Type that the operand it to be converted to 790104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param from Operand that is being converted 800104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \param state GLSL compiler state 810104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 820104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * \return 830104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * If a conversion is possible (or unnecessary), \c true is returned. 840104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * Otherwise \c false is returned. 850104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 860104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanickstatic bool 87bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickapply_implicit_conversion(const glsl_type *to, ir_rvalue * &from, 880104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick struct _mesa_glsl_parse_state *state) 890104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick{ 90953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 91bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (to->base_type == from->type->base_type) 920104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 930104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 940104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* This conversion was added in GLSL 1.20. If the compilation mode is 950104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * GLSL 1.10, the conversion is skipped. 960104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 970104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (state->language_version < 120) 980104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 990104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1000104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* From page 27 (page 33 of the PDF) of the GLSL 1.50 spec: 1010104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * 1020104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * "There are no implicit array or structure conversions. For 1030104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * example, an array of int cannot be implicitly converted to an 1040104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * array of float. There are no implicit conversions between 1050104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * signed and unsigned integers." 1060104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 1070104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick /* FINISHME: The above comment is partially a lie. There is int/uint 1080104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick * FINISHME: conversion for immediate constants. 1090104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick */ 110bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if (!to->is_float() || !from->type->is_numeric()) 1110104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return false; 1120104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 113506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke /* Convert to a floating point type with the same number of components 114506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke * as the original type - i.e. int to float, not int to vec4. 115506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke */ 116506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke to = glsl_type::get_instance(GLSL_TYPE_FLOAT, from->type->vector_elements, 117506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke from->type->matrix_columns); 118506199b852390e14a1d78392285bee8f06b6ede7Kenneth Graunke 119bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick switch (from->type->base_type) { 1200104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_INT: 1211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_i2f, to, from, NULL); 1220104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1230104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_UINT: 1241660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_u2f, to, from, NULL); 1250104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick break; 1260104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick case GLSL_TYPE_BOOL: 1271660a2954797e056caba319c5d6c70b0d4be22feCarl Worth from = new(ctx) ir_expression(ir_unop_b2f, to, from, NULL); 128dc58b3f8ccd817fdee390a3df5b8e0fb29d5397cEric Anholt break; 1290104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick default: 1300104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick assert(0); 1310104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick } 1320104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1330104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return true; 1340104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick} 1350104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 1360104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 137a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 138bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickarithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 139a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick bool multiply, 140a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 141a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 142336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 143336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 1440104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick 145a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 146a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 147a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic binary operators add (+), subtract (-), 148a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * multiply (*), and divide (/) operate on integer and 149a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * floating-point scalars, vectors, and matrices." 150a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 15160b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick if (!type_a->is_numeric() || !type_b->is_numeric()) { 152a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 153a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Operands to arithmetic operators must be numeric"); 1540471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 155a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 156a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 157a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 158a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If one operand is floating-point based and the other is 159a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * not, then the conversions from Section 4.1.10 "Implicit 160a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Conversions" are applied to the non-floating-point-based operand." 161a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1620104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 1630104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 164a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 165a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "Could not implicitly convert operands to " 166a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "arithmetic operator"); 1670104536568ed031654c1c3c957b0216bbca4a1d6Ian Romanick return glsl_type::error_type; 168a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 169336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 170336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 171336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 172a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "If the operands are integer types, they must both be signed or 173a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both be unsigned." 174a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 175a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * From this rule and the preceeding conversion it can be inferred that 176a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT. 17760b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * The is_numeric check above already filtered out the case where either 17860b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * type is not one of these, so now the base types need only be tested for 17960b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick * equality. 180a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 181a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_a->base_type != type_b->base_type) { 182a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 183a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "base type mismatch for arithmetic operator"); 1840471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 185a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 186a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 187a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All arithmetic binary operators result in the same fundamental type 188a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (signed integer, unsigned integer, or floating-point) as the 189a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands they operate on, after operand type conversion. After 190a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * conversion, the following cases are valid 191a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 192a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The two operands are scalars. In this case the operation is 193a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * applied, resulting in a scalar." 194a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 195cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar() && type_b->is_scalar()) 196a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 197a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 198a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* One operand is a scalar, and the other is a vector or matrix. 199a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case, the scalar operation is applied independently to each 200a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component of the vector or matrix, resulting in the same size 201a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector or matrix." 202a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 203cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (type_a->is_scalar()) { 204cb36f8aaeeb09660843316270a781948f773d90bIan Romanick if (!type_b->is_scalar()) 205a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 206cb36f8aaeeb09660843316270a781948f773d90bIan Romanick } else if (type_b->is_scalar()) { 207a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 208a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 209a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 210a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 211a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been 212a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * handled. 213a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 21460b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_a->is_scalar()); 21560b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(!type_b->is_scalar()); 216a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 217a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The two operands are vectors of the same size. In this case, the 218a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operation is done component-wise resulting in the same size 219a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * vector." 220a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 221a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector() && type_b->is_vector()) { 222a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) { 223a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 224a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } else { 225a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, 226a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt "vector size mismatch for arithmetic operator"); 227a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 228a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt } 229a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 230a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 231a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* All of the combinations of <scalar, scalar>, <vector, scalar>, 232a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and 233a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * <vector, vector> have been handled. At least one of the operands must 234a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * be matrix. Further, since there are no integer matrix types, the base 235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * type of both operands must be float. 236a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 23760b54d977a7b3df9612eb9232f6b5d6c3f393e2fIan Romanick assert(type_a->is_matrix() || type_b->is_matrix()); 238a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_a->base_type == GLSL_TYPE_FLOAT); 239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick assert(type_b->base_type == GLSL_TYPE_FLOAT); 240a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "* The operator is add (+), subtract (-), or divide (/), and the 242a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operands are matrices with the same number of rows and the same 243a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * number of columns. In this case, the operation is done component- 244a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise resulting in the same size matrix." 245a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * * The operator is multiply (*), where both operands are matrices or 246a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * one operand is a vector and the other a matrix. A right vector 247a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand is treated as a column vector and a left vector operand as a 248a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * row vector. In all these cases, it is required that the number of 249a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * columns of the left operand is equal to the number of rows of the 250a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * right operand. Then, the multiply (*) operation does a linear 251a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * algebraic multiply, yielding an object that has the same number of 252a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * rows as the left operand and the same number of columns as the right 253a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand. Section 5.10 "Vector and Matrix Operations" explains in 254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * more detail how vectors and matrices are operated on." 255a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 256a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (! multiply) { 257a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt if (type_a == type_b) 258a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type_a; 259a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 260fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick if (type_a->is_matrix() && type_b->is_matrix()) { 261c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* Matrix multiply. The columns of A must match the rows of B. Given 262c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the other previously tested constraints, this means the vector type 263c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of a row from A must be the same as the vector type of a column from 264c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 265c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 266c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick if (type_a->row_type() == type_b->column_type()) { 267c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* The resulting matrix has the number of columns of matrix B and 268c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the number of rows of matrix A. We get the row count of A by 269c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * looking at the size of a vector that makes up a column. The 270c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * transpose (size of a row) is done for B. 271c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick */ 272a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt const glsl_type *const type = 273c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick glsl_type::get_instance(type_a->base_type, 274c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_a->column_type()->vector_elements, 275c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick type_b->row_type()->vector_elements); 276a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt assert(type != glsl_type::error_type); 277a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 278a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return type; 279a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 280fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick } else if (type_a->is_matrix()) { 281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* A is a matrix and B is a column vector. Columns of A must match 282c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * rows of B. Given the other previously tested constraints, this 283c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * means the vector type of a row from A must be the same as the 284c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * vector the type of B. 285a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 28647c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth if (type_a->row_type() == type_b) { 28747c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth /* The resulting vector has a number of elements equal to 28847c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth * the number of rows of matrix A. */ 28947c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth const glsl_type *const type = 29047c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth glsl_type::get_instance(type_a->base_type, 29147c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth type_a->column_type()->vector_elements, 29247c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 1); 29347c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth assert(type != glsl_type::error_type); 29447c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 29547c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth return type; 29647c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth } 297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 298fce1150156edc8b51f5cf077679c0fdb5d582abaIan Romanick assert(type_b->is_matrix()); 299a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 300c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick /* A is a row vector and B is a matrix. Columns of A must match rows 301c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * of B. Given the other previously tested constraints, this means 302c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * the type of A must be the same as the vector type of a column from 303c1bd3a1a61364d8450629a935b4611184eb99654Ian Romanick * B. 304a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 30547c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth if (type_a == type_b->column_type()) { 30647c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth /* The resulting vector has a number of elements equal to 30747c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth * the number of columns of matrix B. */ 30847c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth const glsl_type *const type = 30947c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth glsl_type::get_instance(type_a->base_type, 31047c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth type_b->row_type()->vector_elements, 31147c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 1); 31247c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth assert(type != glsl_type::error_type); 31347c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth 31447c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth return type; 31547c90b144729e3edf3b5cbf5b260c1c46e429879Carl Worth } 316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 317a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt 318a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); 319a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt return glsl_type::error_type; 320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 322a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 323a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "All other cases are illegal." 324a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 325a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3260471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 329a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 330a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 33165e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholtunary_arithmetic_result_type(const struct glsl_type *type, 33265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 334a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 57: 335a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The arithmetic unary operators negate (-), post- and pre-increment 337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * and decrement (-- and ++) operate on integer or floating-point 338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * values (including vectors and matrices). All unary operators work 339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * component-wise on their operands. These result with the same type 340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * they operated on." 341a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 34265e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (!type->is_numeric()) { 34365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 34465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to arithmetic operators must be numeric"); 3450471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 34665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 348a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 349a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 350a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickmodulus_result_type(const struct glsl_type *type_a, 35465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt const struct glsl_type *type_b, 35565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 358a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The operator modulus (%) operates on signed or unsigned integers or 359a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * integer vectors. The operand types must both be signed or both be 360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * unsigned." 361a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 36240176e249f72b6090204611873b19aed3da67c71Ian Romanick if (!type_a->is_integer() || !type_b->is_integer() 363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->base_type != type_b->base_type)) { 36465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3650471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operands cannot be vectors of differing size. If one operand is 369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * a scalar and the other vector, then the scalar is applied component- 370a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * wise to the vector, resulting in the same type as the vector. If both 371a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * are vectors of the same size, the result is computed component-wise." 372a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 373a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (type_a->is_vector()) { 374a2dd22fb194bdffa14a2466ae5667f3be63430d3Ian Romanick if (!type_b->is_vector() 375a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (type_a->vector_elements == type_b->vector_elements)) 376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_a; 377a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else 378a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type_b; 379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 380a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The operator modulus (%) is not defined for any other data types 381a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * (non-integer types)." 382a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 38365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "type mismatch"); 3840471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 385a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 386a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 387a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 388a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic const struct glsl_type * 389bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanickrelational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, 39065e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt struct _mesa_glsl_parse_state *state, YYLTYPE *loc) 391a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 392336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_a = value_a->type; 393336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *type_b = value_b->type; 3940150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick 395a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* From GLSL 1.50 spec, page 56: 396a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * "The relational operators greater than (>), less than (<), greater 397a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * than or equal (>=), and less than or equal (<=) operate only on 398a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * scalar integer and scalar floating-point expressions." 399a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 400a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick if (!type_a->is_numeric() 401a6d653dcbbee3158f9ea7b284bdeb1a8432f0fcbIan Romanick || !type_b->is_numeric() 402cb36f8aaeeb09660843316270a781948f773d90bIan Romanick || !type_a->is_scalar() 40365e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt || !type_b->is_scalar()) { 40465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 40565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Operands to relational operators must be scalar and " 40665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "numeric"); 4070471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 40865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 409a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 410a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "Either the operands' types must match, or the conversions from 411a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * Section 4.1.10 "Implicit Conversions" will be applied to the integer 412a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operand, after which the types must match." 413a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4140150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick if (!apply_implicit_conversion(type_a, value_b, state) 4150150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick && !apply_implicit_conversion(type_b, value_a, state)) { 41665e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, 41765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "Could not implicitly convert operands to " 41865e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt "relational operator"); 4190150f5f20edaef96520af5d1bbed0e62e24918e5Ian Romanick return glsl_type::error_type; 420a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 421336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_a = value_a->type; 422336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt type_b = value_b->type; 423a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 42465e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt if (type_a->base_type != type_b->base_type) { 42565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt _mesa_glsl_error(loc, state, "base type mismatch"); 4260471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::error_type; 42765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt } 428a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 429a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* "The result is scalar Boolean." 430a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 4310471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick return glsl_type::bool_type; 432a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 433a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 434a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 4350bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick/** 4360bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that a value can be assigned to a location with a specified type 4370bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4380bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Validates that \c rhs can be assigned to some location. If the types are 4390bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * not an exact match but an automatic conversion is possible, \c rhs will be 4400bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * converted. 4410bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4420bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \return 4430bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. 4440bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * Otherwise the actual RHS to be assigned will be returned. This may be 4450bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \c rhs, or it may be \c rhs after some type conversion. 4460bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * 4470bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * \note 4480bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * In addition to being used for assignments, this function is used to 4490bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * type-check return values. 4500bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 451fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 452336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholtvalidate_assignment(struct _mesa_glsl_parse_state *state, 453336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *lhs_type, ir_rvalue *rhs) 4540bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick{ 455336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt const glsl_type *rhs_type = rhs->type; 4560bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4570bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If there is already some error in the RHS, just return it. Anything 4580bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick * else will lead to an avalanche of error message back to the user. 4590bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4600bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type->is_error()) 4610bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4620bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4630bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick /* If the types are identical, the assignment can trivially proceed. 4640bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick */ 4650bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick if (rhs_type == lhs_type) 4660bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return rhs; 4670bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 4680157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the array element types are the same and the size of the LHS is zero, 4690157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the assignment is okay. 4700157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * 4710157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * Note: Whole-array assignments are not permitted in GLSL 1.10, but this 4720157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is handled by ir_dereference::is_lvalue. 4730157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 4740157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs_type->is_array() && rhs->type->is_array() 4750157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->element_type() == rhs->type->element_type()) 4760157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick && (lhs_type->array_size() == 0)) { 4770157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick return rhs; 4780157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 4790157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 480336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt /* Check for implicit conversion in GLSL 1.20 */ 481336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (apply_implicit_conversion(lhs_type, rhs, state)) { 482336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt rhs_type = rhs->type; 483336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt if (rhs_type == lhs_type) 484336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt return rhs; 485336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt } 486336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt 4870bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick return NULL; 4880bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick} 4890bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 49010a685218610e737e23d2d8a243ed6ff6613becdEric Anholtir_rvalue * 49110a685218610e737e23d2d8a243ed6ff6613becdEric Anholtdo_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, 49210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt ir_rvalue *lhs, ir_rvalue *rhs, 49310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt YYLTYPE lhs_loc) 49410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt{ 495953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 49610a685218610e737e23d2d8a243ed6ff6613becdEric Anholt bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); 49710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 49810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!error_emitted) { 49910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt /* FINISHME: This does not handle 'foo.bar.a.b.c[5].d = 5' */ 50010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (!lhs->is_lvalue()) { 50110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); 50210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = true; 50310a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 50410a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 50510a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 506336b4ad8c76a525a0df2f4b0fc1d67e86bc5db3fEric Anholt ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); 50710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt if (new_rhs == NULL) { 50810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt _mesa_glsl_error(& lhs_loc, state, "type mismatch"); 50910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } else { 51010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt rhs = new_rhs; 5110157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5120157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick /* If the LHS array was not declared with a size, it takes it size from 5130157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * the RHS. If the LHS is an l-value and a whole array, it must be a 5140157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * dereference of a variable. Any other case would require that the LHS 5150157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick * is either not an l-value or not a whole array. 5160157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick */ 5170157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick if (lhs->type->array_size() == 0) { 5180157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick ir_dereference *const d = lhs->as_dereference(); 5190157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5200157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(d != NULL); 5210157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 52236ea28646c666ac2af9b43c47e65f9f53ffcc390Ian Romanick ir_variable *const var = d->variable_referenced(); 5230157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 5240157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick assert(var != NULL); 5250157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick 52663f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick if (var->max_array_access >= unsigned(rhs->type->array_size())) { 52763f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick /* FINISHME: This should actually log the location of the RHS. */ 52863f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " 52963f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick "previous access", 53063f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick var->max_array_access); 53163f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick } 53263f394203a8be9b87f8617cd7a56a0806c0870b3Ian Romanick 533f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick var->type = glsl_type::get_array_instance(lhs->type->element_type(), 5340157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick rhs->type->array_size()); 5359703ed05e684f4269cd8af27c94e9b6bf8781d85Eric Anholt d->type = var->type; 5360157f41e5e644632393edf903f3c1adb1cf782cdIan Romanick } 53710a685218610e737e23d2d8a243ed6ff6613becdEric Anholt } 53810a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5392731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, 5402731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * but not post_inc) need the converted assigned value as an rvalue 5412731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * to handle things like: 5422731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5432731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * i = j += 1; 5442731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * 5452731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * So we always just store the computed value being assigned to a 5462731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * temporary and return a deref of that temporary. If the rvalue 5472731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt * ends up not being used, the temp will get copy-propagated out. 5482731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt */ 5497e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", 5507e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 551e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); 552ae805922b7e3cdaf3aee26c3b799fe3608669bbaEric Anholt instructions->push_tail(var); 553e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt instructions->push_tail(new(ctx) ir_assignment(deref_var, 5541660a2954797e056caba319c5d6c70b0d4be22feCarl Worth rhs, 5551660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL)); 556e33c10328caec29616a5433b1d1df9088f3a84dfEric Anholt deref_var = new(ctx) ir_dereference_variable(var); 5572731a739d047e4aadc1cab4bcf8c01c1cf8e86dbEric Anholt 5588e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick if (!error_emitted) 5598e9ce2eb56a087c2544112700ae1abe3f96648ddIan Romanick instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); 56010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt 5611660a2954797e056caba319c5d6c70b0d4be22feCarl Worth return new(ctx) ir_dereference_variable(var); 56210a685218610e737e23d2d8a243ed6ff6613becdEric Anholt} 5630bb1c3c1539fcadaa90d592a296c2ff1de3787a4Ian Romanick 564de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholtstatic ir_rvalue * 565959a9ecdd8fbc3375e4149f2b44d253622ff12eeEric Anholtget_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) 566de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt{ 5671660a2954797e056caba319c5d6c70b0d4be22feCarl Worth void *ctx = talloc_parent(lvalue); 568de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt ir_variable *var; 569de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 570de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* FINISHME: Give unique names to the temporaries. */ 5717e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", 5727e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 57343b5b03d67ce890e867c81d4a5cfc4871d711d43Eric Anholt instructions->push_tail(var); 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; 6601c325af4d6b907e0a47ab7f868a2a78f054f153fAras Pranckevicius ir_rvalue *op[3]; 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 682c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth type = unary_arithmetic_result_type(op[0]->type, state, & loc); 683c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth 684c24bcad9f88379ffba9e2f0ff92f22cdf60c2927Carl Worth error_emitted = type->is_error(); 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 { 82881d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 8297e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "and_tmp", 8307e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 83181d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(tmp); 83281d664f099a5fd5fac777480532fb4307d591451Ian Romanick 8331660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 83444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt instructions->push_tail(stmt); 8354950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 83644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); 8374950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 83844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 83944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 8404950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 84144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 84244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 84344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 84444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 84544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 846b82c0c31aea2d02721f162b94b9f591242d9364eEric Anholt 8471660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 84844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 8491660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 85044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 8514950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8521660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 85344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 8541660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); 85544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 8564950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8571660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 85844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 85944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 8604950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 8614950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8624950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8634950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_or: { 8644950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 8654950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8664950a68bf22ede6f4f368c9783e5401816159574Eric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 8674950a68bf22ede6f4f368c9783e5401816159574Eric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 8684950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 8694950a68bf22ede6f4f368c9783e5401816159574Eric Anholt _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", 8704950a68bf22ede6f4f368c9783e5401816159574Eric Anholt operator_string(this->oper)); 8714950a68bf22ede6f4f368c9783e5401816159574Eric Anholt error_emitted = true; 8724950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 8734950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 87444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_constant *op0_const = op[0]->constant_expression_value(); 87544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const) { 87644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (op0_const->value.b[0]) { 87744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op0_const; 87844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 87944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 88044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 88144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 88244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 88344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt 88444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, 88544b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt "RHS of `%s' must be scalar boolean", 88644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 88744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 88844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 88944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt result = op[1]; 89044b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 89144b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = glsl_type::bool_type; 89244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } else { 893dfd30ca6a95a7d95835dad78ffe1fba4d1f4ef69Kenneth Graunke ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, 8947e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick "or_tmp", 8957e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_var_temporary); 8960b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 8974950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 89881d664f099a5fd5fac777480532fb4307d591451Ian Romanick ir_if *const stmt = new(ctx) ir_if(op[0]); 89981d664f099a5fd5fac777480532fb4307d591451Ian Romanick instructions->push_tail(stmt); 90081d664f099a5fd5fac777480532fb4307d591451Ian Romanick 901a0879b9dd438d78635f047cdd5ed4c72bc831b60Eric Anholt op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state); 9024950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { 90444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt YYLTYPE loc = this->subexpressions[1]->get_location(); 9054950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 90644b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", 90744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt operator_string(this->oper)); 90844b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt error_emitted = true; 90944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9104950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9111660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); 91244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const then_assign = 9131660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); 91444b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->then_instructions.push_tail(then_assign); 9154950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9161660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); 91744b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt ir_assignment *const else_assign = 9181660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[1], NULL); 91944b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt stmt->else_instructions.push_tail(else_assign); 9204950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9211660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 92244b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt type = tmp->type; 92344b694e1f621730bca1cd03eabdfe5474d818f18Eric Anholt } 9244950a68bf22ede6f4f368c9783e5401816159574Eric Anholt break; 9254950a68bf22ede6f4f368c9783e5401816159574Eric Anholt } 9264950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9274950a68bf22ede6f4f368c9783e5401816159574Eric Anholt case ast_logic_xor: 9284950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 9294950a68bf22ede6f4f368c9783e5401816159574Eric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 9304950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9314950a68bf22ede6f4f368c9783e5401816159574Eric Anholt 9321660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9331660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 934ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 935a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 936a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 937a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt case ast_logic_not: 938a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 939a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 940a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 941a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt YYLTYPE loc = this->subexpressions[0]->get_location(); 942a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 943a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt _mesa_glsl_error(& loc, state, 944a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt "operand of `!' must be scalar boolean"); 945ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt error_emitted = true; 946a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt } 947a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 9481660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, 9491660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], NULL); 950ebbf14b9801d577adf40dcb0b63df2d3b8da934eEric Anholt type = glsl_type::bool_type; 951a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt break; 952a5827fe8d06a1161ef3b4e2b3296431a55d4ba2eEric Anholt 953a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_mul_assign: 954a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_div_assign: 955a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_add_assign: 956a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sub_assign: { 95718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 95818238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick op[1] = this->subexpressions[1]->hir(instructions, state); 959a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 960bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick type = arithmetic_result_type(op[0], op[1], 96118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick (this->oper == ast_mul_assign), 962a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt state, & loc); 963a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9651660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 966a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 9673e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 9688273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 96910a685218610e737e23d2d8a243ed6ff6613becdEric Anholt this->subexpressions[0]->get_location()); 97010a685218610e737e23d2d8a243ed6ff6613becdEric Anholt type = result->type; 97110a685218610e737e23d2d8a243ed6ff6613becdEric Anholt error_emitted = (op[0]->type->is_error()); 972a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 973a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* GLSL 1.10 does not allow array assignment. However, we don't have to 974a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * explicitly test for this because none of the binary expression 975a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * operators allow array operands either. 976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 978a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 979a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 980a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 98148a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt case ast_mod_assign: { 98248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 98348a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt op[1] = this->subexpressions[1]->hir(instructions, state); 98448a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 98565e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); 98648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 98748a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt assert(operations[this->oper] == ir_binop_mod); 98848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 989768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 9901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 9911660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 99248a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt 9933e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 9948273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 99548a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt this->subexpressions[0]->get_location()); 99648a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt type = result->type; 99765e1a7ac6a6735e135851ddb87e48361d4677000Eric Anholt error_emitted = type->is_error(); 99848a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt break; 99948a0e64b7d6a4308f9c691e5844165ec97f8282eEric Anholt } 1000a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1001a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_ls_assign: 1002a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_rs_assign: 1003183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1004183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement bit-shift assignment operators"); 1005183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1006251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1007a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1008a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_and_assign: 1009a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_xor_assign: 1010a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_or_assign: 1011183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt _mesa_glsl_error(& loc, state, 1012183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt "FINISHME: implement logic assignment operators"); 1013183d8c63947fcfab45c9f2a8a8a6fc311e8b1552Eric Anholt error_emitted = true; 1014251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 1015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 101696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick case ast_conditional: { 101796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick op[0] = this->subexpressions[0]->hir(instructions, state); 101896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 101996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 102096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 102196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The ternary selection operator (?:). It operates on three 102296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expressions (exp1 ? exp2 : exp3). This operator evaluates the 102396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * first expression, which must result in a scalar Boolean." 102496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 102596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { 102696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[0]->get_location(); 102796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 102896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); 102996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 103096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 103196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 103296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* The :? operator is implemented by generating an anonymous temporary 103396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * followed by an if-statement. The last instruction in each branch of 103496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * the if-statement assigns a value to the anonymous temporary. This 103596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * temporary is the r-value of the expression. 103696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 10370ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list then_instructions; 10380ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick exec_list else_instructions; 103996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10400ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[1] = this->subexpressions[1]->hir(&then_instructions, state); 10410ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick op[2] = this->subexpressions[2]->hir(&else_instructions, state); 104296f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 104396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: 104496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * 104596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * "The second and third expressions can be any type, as 104696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * long their types match, or there is a conversion in 104796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * Section 4.1.10 "Implicit Conversions" that can be applied 104896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * to one of the expressions to make their types match. This 104996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * resulting matching type is the type of the entire 105096f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick * expression." 105196f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick */ 1052bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick if ((!apply_implicit_conversion(op[1]->type, op[2], state) 1053bfb09c2a94414c1b40108c9c41eb0844d932e459Ian Romanick && !apply_implicit_conversion(op[2]->type, op[1], state)) 1054db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick || (op[1]->type != op[2]->type)) { 105596f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick YYLTYPE loc = this->subexpressions[1]->get_location(); 105696f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 105796f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick _mesa_glsl_error(& loc, state, "Second and third operands of ?: " 105896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick "operator must have matching types."); 105996f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick error_emitted = true; 10600ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = glsl_type::error_type; 1061db9be2e7aa3a56e43b725ad7725fe6b424e4933eIan Romanick } else { 10620ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick type = op[1]->type; 106396f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 106496f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick 10657825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *cond_val = op[0]->constant_expression_value(); 10667825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *then_val = op[1]->constant_expression_value(); 10677825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_constant *else_val = op[2]->constant_expression_value(); 10687825d3d15710fdfcfc503754862963aac8065480Ian Romanick 10697825d3d15710fdfcfc503754862963aac8065480Ian Romanick if (then_instructions.is_empty() 10707825d3d15710fdfcfc503754862963aac8065480Ian Romanick && else_instructions.is_empty() 10717825d3d15710fdfcfc503754862963aac8065480Ian Romanick && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { 10727825d3d15710fdfcfc503754862963aac8065480Ian Romanick result = (cond_val->value.b[0]) ? then_val : else_val; 10737825d3d15710fdfcfc503754862963aac8065480Ian Romanick } else { 10747e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *const tmp = 10757e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); 10760b9ae3befb0bf80e000b159fd44c961a144f9c36Ian Romanick instructions->push_tail(tmp); 10770ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10781660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(op[0]); 10797825d3d15710fdfcfc503754862963aac8065480Ian Romanick instructions->push_tail(stmt); 10800ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10817825d3d15710fdfcfc503754862963aac8065480Ian Romanick then_instructions.move_nodes_to(& stmt->then_instructions); 10821660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const then_deref = 10831660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10847825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const then_assign = 10851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(then_deref, op[1], NULL); 10867825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->then_instructions.push_tail(then_assign); 10870ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10887825d3d15710fdfcfc503754862963aac8065480Ian Romanick else_instructions.move_nodes_to(& stmt->else_instructions); 10891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const else_deref = 10901660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_dereference_variable(tmp); 10917825d3d15710fdfcfc503754862963aac8065480Ian Romanick ir_assignment *const else_assign = 10921660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_assignment(else_deref, op[2], NULL); 10937825d3d15710fdfcfc503754862963aac8065480Ian Romanick stmt->else_instructions.push_tail(else_assign); 10940ad76c67675c35a65a79752058f53eee74947ba5Ian Romanick 10951660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(tmp); 10967825d3d15710fdfcfc503754862963aac8065480Ian Romanick } 1097251eb753187fee83e6413f44f8b3cf0be1b4f4cbIan Romanick break; 109896f9cea11606bb1bd8e07edc17032447424b8bffIan Romanick } 1099a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1100a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_pre_inc: 110176ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt case ast_pre_dec: { 110276ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 110376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 11041660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 110576ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt else 11061660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 110776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1108a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 110976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 1110768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 11111660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11121660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 111376ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt 11143e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt result = do_assignment(instructions, state, 11158273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 111676ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt this->subexpressions[0]->get_location()); 111776ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt type = result->type; 111876ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt error_emitted = op[0]->type->is_error(); 111976ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt break; 112076ea56c007263ec3b79234e7b775e3a7b519a54aEric Anholt } 1121a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1122a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_post_inc: 1123de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt case ast_post_dec: { 1124de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt op[0] = this->subexpressions[0]->hir(instructions, state); 1125de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt if (op[0]->type->base_type == GLSL_TYPE_FLOAT) 11261660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1.0f); 1127de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt else 11281660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[1] = new(ctx) ir_constant(1); 1129de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1130de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 1131de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1132a13bb1490c57ea958f2d1853d71c55d03263e9e4Eric Anholt type = arithmetic_result_type(op[0], op[1], false, state, & loc); 1133de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1134768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_rvalue *temp_rhs; 11351660a2954797e056caba319c5d6c70b0d4be22feCarl Worth temp_rhs = new(ctx) ir_expression(operations[this->oper], type, 11361660a2954797e056caba319c5d6c70b0d4be22feCarl Worth op[0], op[1]); 1137de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1138de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt /* Get a temporary of a copy of the lvalue before it's modified. 1139de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt * This may get thrown away later. 1140de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt */ 11418273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL)); 1142de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 11433e24ef68a9b22918c8b21b743d81bbf86f43c119Eric Anholt (void)do_assignment(instructions, state, 11448273bd46877e2ea2b8a02b87a11c68102d07e1f2Eric Anholt op[0]->clone(ctx, NULL), temp_rhs, 1145de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt this->subexpressions[0]->get_location()); 1146de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt 1147de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt type = result->type; 1148de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt error_emitted = op[0]->type->is_error(); 1149a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1150de38f0ed53c80f87478c3899d4ff1bc3a601ea6bEric Anholt } 1151a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1152a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_field_selection: 115318238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick result = _mesa_ast_field_selection_to_hir(this, instructions, state); 1154a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1155a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1156a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 115727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick case ast_array_index: { 115827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick YYLTYPE index_loc = subexpressions[1]->get_location(); 115927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 116027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[0] = subexpressions[0]->hir(instructions, state); 116127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick op[1] = subexpressions[1]->hir(instructions, state); 116227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 116327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); 116427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 1165a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_rvalue *const array = op[0]; 1166b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 11671660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_array(op[0], op[1]); 1168b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 1169b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick /* Do not use op[0] after this point. Use array. 1170b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick */ 1171b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick op[0] = NULL; 1172b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 117327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 117427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 117527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick break; 117627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 117763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (!array->type->is_array() 117863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_matrix() 117963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && !array->type->is_vector()) { 118027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 118163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "cannot dereference non-array / non-matrix / " 118263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick "non-vector"); 118327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 118427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 118527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 118627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (!op[1]->type->is_integer()) { 118727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 118827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be integer type"); 118927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 119027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } else if (!op[1]->type->is_scalar()) { 119127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick _mesa_glsl_error(& index_loc, state, 119227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick "array index must be scalar"); 119327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 119427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 119527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 119627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* If the array index is a constant expression and the array has a 119727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size, ensure that the access is in-bounds. If the array 119827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * index is not a constant expression, ensure that the array has a 119927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. 120027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 120127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick ir_constant *const const_index = op[1]->constant_expression_value(); 120227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (const_index != NULL) { 120327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick const int idx = const_index->value.i[0]; 120463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick const char *type_name; 120563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick unsigned bound = 0; 120663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick 120763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 120863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "matrix"; 120963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 121063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "vector"; 121163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 121263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name = "array"; 121363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 121427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 121527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: 121627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * 121727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * "It is illegal to declare an array with a size, and then 121827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * later (in the same shader) index the same array with an 121927e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * integral constant expression greater than or equal to the 122027e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * declared size. It is also illegal to index an array with a 122127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick * negative constant expression." 122227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick */ 122363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_matrix()) { 122463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->row_type()->vector_elements <= idx) { 122563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->row_type()->vector_elements; 122663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 122763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (array->type->is_vector()) { 122863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->vector_elements <= idx) { 122963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->vector_elements; 123063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 123163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else { 123263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((array->type->array_size() > 0) 123363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick && (array->type->array_size() <= idx)) { 123463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick bound = array->type->array_size(); 123563038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 123627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 123727e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 123863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (bound > 0) { 123963038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be < %u", 124063038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name, bound); 124163038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick error_emitted = true; 124263038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } else if (idx < 0) { 124363038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick _mesa_glsl_error(& loc, state, "%s index must be >= 0", 124463038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick type_name); 124527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick error_emitted = true; 124627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1247b8a21cc6df7e9da15a24ed3dbf60cd4aeb8effaaIan Romanick 124863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if (array->type->is_array()) { 1249a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick /* If the array is a variable dereference, it dereferences the 1250a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * whole array, by definition. Use this to get the variable. 1251a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * 1252a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: Should some methods for getting / setting / testing 1253a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick * FINISHME: array access limits be added to ir_dereference? 1254a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick */ 1255a9159f9e87b518ba0a4ad43db8fdd58a678b3a92Ian Romanick ir_variable *const v = array->whole_variable_referenced(); 125663038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick if ((v != NULL) && (unsigned(idx) > v->max_array_access)) 125763038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick v->max_array_access = idx; 125863038e18ad44e4e021da9a6dbe7a075e57ff6415Ian Romanick } 12592b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke } else if (array->type->array_size() == 0) { 12602b7c42b40ae459f7b290eb134d6dabd075aab9f0Kenneth Graunke _mesa_glsl_error(&loc, state, "unsized array index must be constant"); 126127e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 126227e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 126327e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick if (error_emitted) 126427e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick result->type = glsl_type::error_type; 126527e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick 126627e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick type = result->type; 1267a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 126827e3cf8c0d8812f9be55ca6ceb52cf8232742d99Ian Romanick } 1269a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1270a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_function_call: 12717cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick /* Should *NEVER* get here. ast_function_call should always be handled 12727cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick * by ast_function_expression::hir. 1273a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12747cfddf19413ef61fcf1450bd61e9ece4cf1735a4Ian Romanick assert(0); 1275a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1276a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1277a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_identifier: { 1278a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* ast_identifier can appear several places in a full abstract syntax 1279a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * tree. This particular use must be at location specified in the grammar 1280a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * as 'variable_identifier'. 1281a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 12828bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick ir_variable *var = 12838bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->get_variable(this->primary_expression.identifier); 1284a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 12851660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_dereference_variable(var); 1286a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1287a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (var != NULL) { 1288a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1289a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 129071d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "`%s' undeclared", 129118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->primary_expression.identifier); 1292a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1293a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1294a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1295a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1296a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1297a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1298a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_int_constant: 12990471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::int_type; 13001660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.int_constant); 1301a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1302a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1303a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_uint_constant: 13040471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::uint_type; 13051660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.uint_constant); 1306a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1307a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1308a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_float_constant: 13090471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::float_type; 13101660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(this->primary_expression.float_constant); 1311a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1312a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1313a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_bool_constant: 13140471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::bool_type; 13151660a2954797e056caba319c5d6c70b0d4be22feCarl Worth result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); 1316a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1317a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1318a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick case ast_sequence: { 1319a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It should not be possible to generate a sequence in the AST without 1320a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * any expressions in it. 1321a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1322304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick assert(!this->expressions.is_empty()); 1323a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1324a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* The r-value of a sequence is the last expression in the sequence. If 1325a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * the other expressions in the sequence do not have side-effects (and 1326a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * therefore add instructions to the instruction list), they get dropped 1327a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * on the floor. 1328a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 13292b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->expressions) 1330304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick result = ast->hir(instructions, state); 1331a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1332a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = result->type; 1333a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1334a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Any errors should have already been emitted in the loop above. 1335a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1336a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick error_emitted = true; 1337a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick break; 1338a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1339a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1340a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1341cef3baecf636a30b62cd7a1e8de57c7650f7003eIan Romanick if (type->is_error() && !error_emitted) 134271d0bbfcb2853f37b580ec7b705e55bb0eb426faIan Romanick _mesa_glsl_error(& loc, state, "type mismatch"); 1343a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1344a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return result; 1345a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1346a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1347a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1348fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13490044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_expression_statement::hir(exec_list *instructions, 135018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1351a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1352a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* It is possible to have expression statements that don't have an 1353a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * expression. This is the solitary semicolon: 1354a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1355a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * for (i = 0; i < 5; i++) 1356a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * ; 1357a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * 1358a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * In this case the expression will be NULL. Test for NULL and don't do 1359a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * anything in that case. 1360a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 136118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (expression != NULL) 136218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick expression->hir(instructions, state); 1363a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1364a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Statements do not have r-values. 1365a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1366a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1367a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1368a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1369a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1370fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 13710044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_compound_statement::hir(exec_list *instructions, 137218238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1373a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 137418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13758bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 1376a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 13772b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_node, ast, link, &this->statements) 1378304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick ast->hir(instructions, state); 1379a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 138018238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick if (new_scope) 13818bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 1382a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1383a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Compound statements do not have r-values. 1384a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1385a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 1386a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1387a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1388a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 138928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickstatic const glsl_type * 139028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanickprocess_array_type(const glsl_type *base, ast_node *array_size, 139128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick struct _mesa_glsl_parse_state *state) 139228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick{ 139328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick unsigned length = 0; 139428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Reject delcarations of multidimensional arrays. */ 139628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 139728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (array_size != NULL) { 139828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick exec_list dummy_instructions; 139928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); 140028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick YYLTYPE loc = array_size->get_location(); 140128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 140228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick /* FINISHME: Verify that the grammar forbids side-effects in array 140328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick * FINISHME: sizes. i.e., 'vec4 [x = 12] data' 140428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick */ 140528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(dummy_instructions.is_empty()); 140628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 140728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (ir != NULL) { 140828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (!ir->type->is_integer()) { 140928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be integer type"); 141028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (!ir->type->is_scalar()) { 141128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be scalar type"); 141228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 141328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick ir_constant *const size = ir->constant_expression_value(); 141428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 141528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick if (size == NULL) { 141628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be a " 141728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick "constant valued expression"); 141828009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else if (size->value.i[0] <= 0) { 141928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > 0"); 142028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } else { 142128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick assert(size->type == ir->type); 142228009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick length = size->value.u[0]; 142328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 142428009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 142528009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 142628009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 142728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1428f38d15b80d4e4c8ecb7a76087cdc49835f0aa271Ian Romanick return glsl_type::get_array_instance(base, length); 142928009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick} 143028009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 143128009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick 1432d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickconst glsl_type * 1433d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanickast_type_specifier::glsl_type(const char **name, 1434d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick struct _mesa_glsl_parse_state *state) const 1435a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1436d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick const struct glsl_type *type; 1437a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 14383455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if ((this->type_specifier == ast_struct) && (this->type_name == NULL)) { 1439a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle annonymous structures. */ 1440a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type = NULL; 1441a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1442d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = state->symbols->get_type(this->type_name); 1443d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick *name = this->type_name; 1444a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1445d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick if (this->is_array) { 1446d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = process_array_type(type, this->array_size, state); 144728009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick } 1448a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1449a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1450a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return type; 1451a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1452a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1453a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1454a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickstatic void 1455a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanickapply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, 1456768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var, 14572e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt struct _mesa_glsl_parse_state *state, 14582e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE *loc) 1459a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1460a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->invariant) 1461a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->invariant = 1; 1462a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1463a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Mark 'in' variables at global scope as read-only. */ 1464a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->constant || qual->attribute || qual->uniform 1465a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1466a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->read_only = 1; 1467a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1468a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->centroid) 1469a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->centroid = 1; 1470a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1471ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick if (qual->attribute && state->target != vertex_shader) { 14722e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt var->type = glsl_type::error_type; 14732e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt _mesa_glsl_error(loc, state, 14742e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt "`attribute' variables may not be declared in the " 1475ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick "%s shader", 1476ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target)); 14772e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt } 14782e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt 147990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: 148090b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * 148190b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * "The varying qualifier can be used only with the data types 148290b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of 148390b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt * these." 148490b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt */ 14850ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (qual->varying) { 14860ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt const glsl_type *non_array_type; 14870ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14880ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (var->type && var->type->is_array()) 14890ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type->fields.array; 14900ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt else 14910ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt non_array_type = var->type; 14920ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt 14930ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { 14940ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt var->type = glsl_type::error_type; 14950ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt _mesa_glsl_error(loc, state, 14960ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt "varying variables must be of base type float"); 14970ca171908d04732176cbcaf2625fed8208a93dc9Eric Anholt } 149890b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt } 149990b7825b0e92375dbe721d2dca1a4a3f1093f4abEric Anholt 15007e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick /* If there is no qualifier that changes the mode of the variable, leave 15017e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick * the setting alone. 15027e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick */ 1503a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->in && qual->out) 1504a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_inout; 1505a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->attribute || qual->in 1506a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick || (qual->varying && (state->target == fragment_shader))) 1507a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_in; 15080b678234625fac67a89285ad2871dedc891fb1b1Ian Romanick else if (qual->out || (qual->varying && (state->target == vertex_shader))) 1509a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_out; 1510a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->uniform) 1511a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->mode = ir_var_uniform; 1512a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1513a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (qual->flat) 1514a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_flat; 1515a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else if (qual->noperspective) 1516a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_noperspective; 1517a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick else 1518a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var->interpolation = ir_var_smooth; 15199d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick 15204a962170d7cf4243d6ae156fca20a6167388925dEric Anholt var->pixel_center_integer = qual->pixel_center_integer; 15214a962170d7cf4243d6ae156fca20a6167388925dEric Anholt var->origin_upper_left = qual->origin_upper_left; 15228d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick if ((qual->origin_upper_left || qual->pixel_center_integer) 15238d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick && (strcmp(var->name, "gl_FragCoord") != 0)) { 15248d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick const char *const qual_string = (qual->origin_upper_left) 15258d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick ? "origin_upper_left" : "pixel_center_integer"; 15268d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 15278d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick _mesa_glsl_error(loc, state, 15288d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "layout qualifier `%s' can only be applied to " 15298d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick "fragment shader input `gl_FragCoord'", 15308d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick qual_string); 15318d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick } 15328d8469eb2ade4fd48188403351a38f740987fb80Ian Romanick 15339d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick if (var->type->is_array() && (state->language_version >= 120)) { 15349d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick var->array_lvalue = true; 15359d975377ca6dae7805804c0fbe625bb7c5f9e095Ian Romanick } 1536a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1537a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1538a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1539fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 15400044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_declarator_list::hir(exec_list *instructions, 154118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1542a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1543953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1544a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *decl_type; 1545a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *type_name = NULL; 15468558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt ir_rvalue *result = NULL; 1547c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick YYLTYPE loc = this->get_location(); 1548a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 15496f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: 15506f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15516f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * "To ensure that a particular output variable is invariant, it is 15526f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * necessary to use the invariant qualifier. It can either be used to 15536f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * qualify a previously declared variable as being invariant 15546f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15556f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * invariant gl_Position; // make existing gl_Position be invariant" 15566f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * 15576f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * In these cases the parser will set the 'invariant' flag in the declarator 15586f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * list, and the type will be NULL. 15596f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 15606f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->invariant) { 15616f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type == NULL); 15626f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15636f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (state->current_function != NULL) { 15646f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15656f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "All uses of `invariant' keyword must be at global " 15666f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "scope\n"); 15676f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15686f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15696f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 15706f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!decl->is_array); 15716f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->array_size == NULL); 15726f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(decl->initializer == NULL); 15736f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15746f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick ir_variable *const earlier = 15756f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick state->symbols->get_variable(decl->identifier); 15766f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (earlier == NULL) { 15776f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15786f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "Undeclared variable `%s' cannot be marked " 15796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "invariant\n", decl->identifier); 15806f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == vertex_shader) 15816f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_out)) { 15826f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15836f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 15846f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", decl->identifier); 15856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else if ((state->target == fragment_shader) 15866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick && (earlier->mode != ir_var_in)) { 15876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 15886f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 15896f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", decl->identifier); 15906f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } else { 15916f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick earlier->invariant = true; 15926f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 15956f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* Invariant redeclarations do not have r-values. 15966f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick */ 15976f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick return NULL; 15986f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 15996f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16006f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(this->type != NULL); 16016f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick assert(!this->invariant); 16026f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 16033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* The type specifier may contain a structure definition. Process that 16043455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * before any of the variable declarations. 16053455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 16063455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (void) this->type->specifier->hir(instructions, state); 16073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 1608d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick decl_type = this->type->specifier->glsl_type(& type_name, state); 1609304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick if (this->declarations.is_empty()) { 16106f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick /* The only valid case where the declaration list can be empty is when 16116f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * the declaration is setting the default precision of a built-in type 16126f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick * (e.g., 'precision highp vec4;'). 1613c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick */ 1614c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick 16156f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (decl_type != NULL) { 1616c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } else { 1617c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick _mesa_glsl_error(& loc, state, "incomplete declaration"); 1618c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1619c824e35dd092a9cc0dbfd36d90fcdf1488c8942dIan Romanick } 1620a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16212b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, &this->declarations) { 1622a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *var_type; 1623768b55a5268572ff9fd03e57e92775882eb0a821Ian Romanick ir_variable *var; 1624a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1625a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Emit a warning if a variable declaration shadows a 1626a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: declaration at a higher scope. 1627a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 1628a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1629cec65a6b76290ee4da91691bd3ef01c3fb8a0c37Ian Romanick if ((decl_type == NULL) || decl_type->is_void()) { 1630a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type_name != NULL) { 1631a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1632a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 1633a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick type_name, decl->identifier); 1634a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1635a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 1636a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 1637a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick decl->identifier); 1638a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1639a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick continue; 1640a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1641a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1642a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (decl->is_array) { 164328009cd75cd3328774bd80a5b87a255ac881a710Ian Romanick var_type = process_array_type(decl_type, decl->array_size, state); 1644a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 1645a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick var_type = decl_type; 1646a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1647a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16487e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); 1649a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16503f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; 16513f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16523f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * "Global variables can only use the qualifiers const, 16533f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * attribute, uni form, or varying. Only one may be 16543f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * specified. 16553f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16563f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * Local variables can only use the qualifier const." 16573f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * 16583f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt * This is relaxed in GLSL 1.30. 16593f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt */ 16603f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (state->language_version < 120) { 16613f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.out) { 16623f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16633f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`out' qualifier in declaration of `%s' " 16643f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16653f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16663f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16673f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt if (this->type->qualifier.in) { 16683f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt _mesa_glsl_error(& loc, state, 16693f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "`in' qualifier in declaration of `%s' " 16703f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt "only valid for function parameters in GLSL 1.10.", 16713f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt decl->identifier); 16723f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16733f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt /* FINISHME: Test for other invalid qualifiers. */ 16743f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt } 16753f151509327629ce7d7cbfec42cae987ebf6639fEric Anholt 16762e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, 16772e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt & loc); 1678a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 16796f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick if (this->type->qualifier.invariant) { 1680046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt if ((state->target == vertex_shader) && !(var->mode == ir_var_out || 1681046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt var->mode == ir_var_inout)) { 1682046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 1683046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature outval 1684046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 16856f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16866f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, vertex shader " 16876f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "outputs only\n", var->name); 1688046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt } else if ((state->target == fragment_shader) && 1689046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt !(var->mode == ir_var_in || var->mode == ir_var_inout)) { 1690046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt /* FINISHME: Note that this doesn't work for invariant on 1691046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt * a function signature inval 1692046bef235744e891e4a48076e1a3ff9a61a63092Eric Anholt */ 16936f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick _mesa_glsl_error(& loc, state, 16946f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "`%s' cannot be marked invariant, fragment shader " 16956f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick "inputs only\n", var->name); 16966f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16976f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick } 16986f0823da09384cc1b557385b9e19a9cc7e901ad7Ian Romanick 1699e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (state->current_function != NULL) { 1700b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick const char *mode = NULL; 1701e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick const char *extra = ""; 1702b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1703e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick /* There is no need to check for 'inout' here because the parser will 1704e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick * only allow that in function parameter lists. 1705e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick */ 1706e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick if (this->type->qualifier.attribute) { 1707b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "attribute"; 1708b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.uniform) { 1709b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "uniform"; 1710b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } else if (this->type->qualifier.varying) { 1711b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick mode = "varying"; 1712e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.in) { 1713e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "in"; 1714e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1715e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick } else if (this->type->qualifier.out) { 1716e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode = "out"; 1717e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick extra = " or in function parameter list"; 1718b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick } 1719b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick 1720b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick if (mode) { 1721e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick _mesa_glsl_error(& loc, state, 1722b168e53452592ce7364a3ce46a6d30c5b746fc3bIan Romanick "%s variable `%s' must be declared at " 1723e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick "global scope%s", 1724e0800062daf237a9e4f893bc3db473da8f7472c0Ian Romanick mode, var->name, extra); 1725e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } 1726e1c1a3f3bd139da47a1184a8c69af6239973a90cIan Romanick } else if (var->mode == ir_var_in) { 1727fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->target == vertex_shader) { 1728fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick bool error_emitted = false; 1729fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1730fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: 1731fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1732fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "Vertex shader inputs can only be float, floating-point 1733fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors, matrices, signed and unsigned integers and integer 1734fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * vectors. Vertex shader inputs can also form arrays of these 1735fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * types, but not structures." 1736fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 17372d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: 17382d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 17392d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * "Vertex shader inputs can only be float, floating-point 17402d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors, matrices, signed and unsigned integers and integer 17412d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * vectors. They cannot be arrays or structures." 17422d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick * 1743fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: 1744fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * 1745fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * "The attribute qualifier can be used only with float, 1746fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * floating-point vectors, and matrices. Attribute variables 1747fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick * cannot be declared as arrays or structures." 1748fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick */ 1749fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick const glsl_type *check_type = var->type->is_array() 1750fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick ? var->type->fields.array : var->type; 1751fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1752fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick switch (check_type->base_type) { 1753fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_FLOAT: 1754fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1755fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_UINT: 1756fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick case GLSL_TYPE_INT: 1757fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick if (state->language_version > 120) 1758fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick break; 1759fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick /* FALLTHROUGH */ 1760fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick default: 1761fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1762fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1763fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "type %s`%s'", 1764fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick var->type->is_array() ? "array of " : "", 1765fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick check_type->name); 1766fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1767fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1768fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 17692d816204c875ace0fc363d3eeada2255a5009d5cIan Romanick if (!error_emitted && (state->language_version <= 130) 1770fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick && var->type->is_array()) { 1771fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick _mesa_glsl_error(& loc, state, 1772fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "vertex shader input / attribute cannot have " 1773fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick "array type"); 1774fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick error_emitted = true; 1775fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1776fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1777fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick } 1778fb9f5b0675bd714fd6d6325479f62435aaabc2eeIan Romanick 1779e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick /* Process the initializer and add its instructions to a temporary 1780e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * list. This list will be added to the instruction stream (below) after 1781e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * the declaration is added. This is done because in some cases (such as 1782e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * redeclarations) the declaration may not actually be added to the 1783e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick * instruction stream. 1784e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick */ 1785fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt exec_list initializer_instructions; 178666faec4895b7bb59a614087a200c05157191b4aeIan Romanick if (decl->initializer != NULL) { 178743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick YYLTYPE initializer_loc = decl->initializer->get_location(); 178843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 178966faec4895b7bb59a614087a200c05157191b4aeIan Romanick /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: 179066faec4895b7bb59a614087a200c05157191b4aeIan Romanick * 179166faec4895b7bb59a614087a200c05157191b4aeIan Romanick * "All uniform variables are read-only and are initialized either 179266faec4895b7bb59a614087a200c05157191b4aeIan Romanick * directly by an application via API commands, or indirectly by 179366faec4895b7bb59a614087a200c05157191b4aeIan Romanick * OpenGL." 179466faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 179566faec4895b7bb59a614087a200c05157191b4aeIan Romanick if ((state->language_version <= 110) 179666faec4895b7bb59a614087a200c05157191b4aeIan Romanick && (var->mode == ir_var_uniform)) { 179743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 179843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize uniforms in GLSL 1.10"); 179943de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 180043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick 180143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if (var->type->is_sampler()) { 180243de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 180343de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize samplers"); 180443de17282017bdf187d6e646de3262cc64b7f46bIan Romanick } 180519360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 180643de17282017bdf187d6e646de3262cc64b7f46bIan Romanick if ((var->mode == ir_var_in) && (state->current_function == NULL)) { 180743de17282017bdf187d6e646de3262cc64b7f46bIan Romanick _mesa_glsl_error(& initializer_loc, state, 180843de17282017bdf187d6e646de3262cc64b7f46bIan Romanick "cannot initialize %s shader input / %s", 1809ae4c4c07959f059e557ea44e98552ced1fec9f47Ian Romanick _mesa_glsl_shader_target_name(state->target), 181043de17282017bdf187d6e646de3262cc64b7f46bIan Romanick (state->target == vertex_shader) 181143de17282017bdf187d6e646de3262cc64b7f46bIan Romanick ? "attribute" : "varying"); 181266faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 181366faec4895b7bb59a614087a200c05157191b4aeIan Romanick 18141660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); 1815fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions, 1816e78e0fa42b49b50ed1150f7fdb74bf942ebd6bcfIan Romanick state); 181719360152f5bd8cff93359dbfe5a50a90b699c118Ian Romanick 1818ce030884064046925a655413097dd8257e9392ddIan Romanick /* Calculate the constant value if this is a const or uniform 1819307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt * declaration. 182066faec4895b7bb59a614087a200c05157191b4aeIan Romanick */ 1821ce030884064046925a655413097dd8257e9392ddIan Romanick if (this->type->qualifier.constant || this->type->qualifier.uniform) { 1822e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); 1823e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke if (new_rhs != NULL) { 1824e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs = new_rhs; 1825e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } else { 1826e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke _mesa_glsl_error(&initializer_loc, state, 1827e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "initializer of type %s cannot be assigned to " 1828e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke "variable of type %s", 1829e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke rhs->type->name, var->type->name); 1830e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke } 1831e1d71850faba23d1bea3858a8c2e05a45fd21143Kenneth Graunke 1832326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt ir_constant *constant_value = rhs->constant_expression_value(); 1833326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt if (!constant_value) { 1834307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt _mesa_glsl_error(& initializer_loc, state, 1835ce030884064046925a655413097dd8257e9392ddIan Romanick "initializer of %s variable `%s' must be a " 1836307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt "constant expression", 1837ce030884064046925a655413097dd8257e9392ddIan Romanick (this->type->qualifier.constant) 1838ce030884064046925a655413097dd8257e9392ddIan Romanick ? "const" : "uniform", 1839307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt decl->identifier); 1840326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt } else { 1841326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt rhs = constant_value; 1842326c676236e6a3c90db63e4d0c893aa4f9c21876Eric Anholt var->constant_value = constant_value; 1843307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 1844307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt } 184566faec4895b7bb59a614087a200c05157191b4aeIan Romanick 1846307c71bf24a3c99409ccf4b8b10f161e4b032cbaEric Anholt if (rhs && !rhs->type->is_error()) { 1847ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt bool temp = var->read_only; 1848ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt if (this->type->qualifier.constant) 1849ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = false; 1850ce030884064046925a655413097dd8257e9392ddIan Romanick 1851ce030884064046925a655413097dd8257e9392ddIan Romanick /* Never emit code to initialize a uniform. 1852ce030884064046925a655413097dd8257e9392ddIan Romanick */ 1853ce030884064046925a655413097dd8257e9392ddIan Romanick if (!this->type->qualifier.uniform) 1854fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt result = do_assignment(&initializer_instructions, state, 1855fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt lhs, rhs, 1856ce030884064046925a655413097dd8257e9392ddIan Romanick this->get_location()); 1857ac3af37d27c49704dd3b2d303b4497b08f8b47fdEric Anholt var->read_only = temp; 185866faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 185966faec4895b7bb59a614087a200c05157191b4aeIan Romanick } 186017d86f4371da413176ba365ca26a58bac172d365Ian Romanick 18610ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: 18620ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * 18630ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * "It is an error to write to a const variable outside of 18640ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * its declaration, so they must be initialized when 18650ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt * declared." 18660ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt */ 18670ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt if (this->type->qualifier.constant && decl->initializer == NULL) { 18680ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt _mesa_glsl_error(& loc, state, 18690ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt "const declaration of `%s' must be initialized"); 18700ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt } 18710ed61257253fc0df1dde9042cb0e7fe22d58077aEric Anholt 18725466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* Attempt to add the variable to the symbol table. If this fails, it 18735466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * means the variable has already been declared at this scope. Arrays 18745466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * fudge this rule a little bit. 18755466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18765466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, 18775466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 18785466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "It is legal to declare an array without a size and then 18795466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * later re-declare the same name as an array of the same 18805466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * type and specify a size." 18815466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18825466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (state->symbols->name_declared_this_scope(decl->identifier)) { 18835466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick ir_variable *const earlier = 18845466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick state->symbols->get_variable(decl->identifier); 18855466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 18865466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if ((earlier != NULL) 18875466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (earlier->type->array_size() == 0) 18885466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && var->type->is_array() 18895466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick && (var->type->element_type() == earlier->type->element_type())) { 18905466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This doesn't match the qualifiers on the two 18915466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: declarations. It's not 100% clear whether this is 18925466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: required or not. 18935466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 18945466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 1895cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: 1896cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * 1897cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * "The size [of gl_TexCoord] can be at most 1898cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick * gl_MaxTextureCoords." 1899cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick */ 1900127308b4be077e5bdf60f76320307550921e86bbIan Romanick const unsigned size = unsigned(var->type->array_size()); 1901cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick if ((strcmp("gl_TexCoord", var->name) == 0) 1902127308b4be077e5bdf60f76320307550921e86bbIan Romanick && (size > state->Const.MaxTextureCoords)) { 1903cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick YYLTYPE loc = this->get_location(); 1904cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick 1905cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " 1906cd00d5b88caa41ebf4b407126f314832f9fdae54Ian Romanick "be larger than gl_MaxTextureCoords (%u)\n", 1907127308b4be077e5bdf60f76320307550921e86bbIan Romanick state->Const.MaxTextureCoords); 190812873fa4e332959295154edfe957c0af79af5e74Ian Romanick } else if ((size > 0) && (size <= earlier->max_array_access)) { 19095466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 19105466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19115466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "array size must be > %u due to " 19125466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "previous access", 19135466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->max_array_access); 19145466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19155466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19165466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick earlier->type = var->type; 19175466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick delete var; 19185466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick var = NULL; 19194a962170d7cf4243d6ae156fca20a6167388925dEric Anholt } else if (state->extensions->ARB_fragment_coord_conventions && 19204a962170d7cf4243d6ae156fca20a6167388925dEric Anholt (earlier != NULL) && 19214a962170d7cf4243d6ae156fca20a6167388925dEric Anholt (strcmp(var->name, "gl_FragCoord") == 0) && 19224a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->type == var->type && 19234a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->mode == var->mode) { 19244a962170d7cf4243d6ae156fca20a6167388925dEric Anholt /* Allow redeclaration of gl_FragCoord for ARB_fcc layout 19254a962170d7cf4243d6ae156fca20a6167388925dEric Anholt * qualifiers. 19264a962170d7cf4243d6ae156fca20a6167388925dEric Anholt */ 19274a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->origin_upper_left = var->origin_upper_left; 19284a962170d7cf4243d6ae156fca20a6167388925dEric Anholt earlier->pixel_center_integer = var->pixel_center_integer; 19295466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } else { 19305466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick YYLTYPE loc = this->get_location(); 19315466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19325466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, "`%s' redeclared", 19335466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19345466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19355466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19365466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick continue; 19375466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19385466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19395466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, 19405466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * 19415466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * "Identifiers starting with "gl_" are reserved for use by 19425466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * OpenGL, and may not be declared in a shader as either a 19435466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * variable or a function." 19445466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19455466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick if (strncmp(decl->identifier, "gl_", 3) == 0) { 19465466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick /* FINISHME: This should only trigger if we're not redefining 19475466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick * FINISHME: a builtin (to add a qualifier, for example). 19485466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick */ 19495466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick _mesa_glsl_error(& loc, state, 19505466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick "identifier `%s' uses reserved `gl_' prefix", 19515466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick decl->identifier); 19525466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick } 19535466b63968b98c9627b8dd207ea2bebf838b5268Ian Romanick 19548048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt /* Push the variable declaration to the top. It means that all 19558048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * the variable declarations will appear in a funny 19568048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * last-to-first order, but otherwise we run into trouble if a 19578048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is prototyped, a global var is decled, then the 19588048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * function is defined with usage of the global var. See 19598048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt * glslparsertest's CorrectModule.frag. 19608048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt */ 19618048226b7b1bbe8fd89f9c32fa4fadca4b8760c4Eric Anholt instructions->push_head(var); 1962fa33d0b85403da94e3f4a7e6c868af215c076b4bEric Anholt instructions->append_list(&initializer_instructions); 19632e85f993d8a014b53ad2f6d295cf66d3fb38b091Ian Romanick 1964c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke /* Add the variable to the symbol table after processing the initializer. 196517d86f4371da413176ba365ca26a58bac172d365Ian Romanick * This differs from most C-like languages, but it follows the GLSL 196617d86f4371da413176ba365ca26a58bac172d365Ian Romanick * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 196717d86f4371da413176ba365ca26a58bac172d365Ian Romanick * spec: 196817d86f4371da413176ba365ca26a58bac172d365Ian Romanick * 196917d86f4371da413176ba365ca26a58bac172d365Ian Romanick * "Within a declaration, the scope of a name starts immediately 197017d86f4371da413176ba365ca26a58bac172d365Ian Romanick * after the initializer if present or immediately after the name 197117d86f4371da413176ba365ca26a58bac172d365Ian Romanick * being declared if not." 197217d86f4371da413176ba365ca26a58bac172d365Ian Romanick */ 197317d86f4371da413176ba365ca26a58bac172d365Ian Romanick const bool added_variable = 1974c7f4ff193a6f7cfae2e4cdc6c4b9162a16226dc0Kenneth Graunke state->symbols->add_variable(var->name, var); 197517d86f4371da413176ba365ca26a58bac172d365Ian Romanick assert(added_variable); 1976a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 1977a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 19788558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt 19798558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt /* Generally, variable declarations do not have r-values. However, 19808558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * one is used for the declaration in 19818558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19828558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * while (bool b = some_condition()) { 19838558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * ... 19848558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * } 19858558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * 19868558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt * so we return the rvalue from the last seen declaration here. 1987a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 19888558459512594216c5aed0bb8d2b0efcbc8b921cEric Anholt return result; 1989a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 1990a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1991a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 1992fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 19930044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanickast_parameter_declarator::hir(exec_list *instructions, 199418238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick struct _mesa_glsl_parse_state *state) 1995a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 1996953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 1997a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const struct glsl_type *type; 1998a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick const char *name = NULL; 19992e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt YYLTYPE loc = this->get_location(); 2000a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2001d612a127ccf12c11204f7f72a332de12f58f85a2Ian Romanick type = this->type->specifier->glsl_type(& name, state); 2002a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2003a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (type == NULL) { 2004a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (name != NULL) { 2005a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2006a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type `%s' in declaration of `%s'", 200718238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick name, this->identifier); 2008a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 2009a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick _mesa_glsl_error(& loc, state, 2010a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick "invalid type in declaration of `%s'", 201118238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick this->identifier); 2012a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2013a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20140471e8b0896e05b3bc81ccad6184e6e35fb61425Ian Romanick type = glsl_type::error_type; 2015a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2016a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2017068c80cfe0a280490353b6b007165d717c672eedEric Anholt /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: 2018068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2019068c80cfe0a280490353b6b007165d717c672eedEric Anholt * "Functions that accept no input arguments need not use void in the 2020068c80cfe0a280490353b6b007165d717c672eedEric Anholt * argument list because prototypes (or definitions) are required and 2021068c80cfe0a280490353b6b007165d717c672eedEric Anholt * therefore there is no ambiguity when an empty argument list "( )" is 2022068c80cfe0a280490353b6b007165d717c672eedEric Anholt * declared. The idiom "(void)" as a parameter list is provided for 2023068c80cfe0a280490353b6b007165d717c672eedEric Anholt * convenience." 2024068c80cfe0a280490353b6b007165d717c672eedEric Anholt * 2025068c80cfe0a280490353b6b007165d717c672eedEric Anholt * Placing this check here prevents a void parameter being set up 2026068c80cfe0a280490353b6b007165d717c672eedEric Anholt * for a function, which avoids tripping up checks for main taking 2027068c80cfe0a280490353b6b007165d717c672eedEric Anholt * parameters and lookups of an unnamed symbol. 2028068c80cfe0a280490353b6b007165d717c672eedEric Anholt */ 2029cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (type->is_void()) { 2030cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (this->identifier != NULL) 2031cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2032cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "named parameter cannot have type `void'"); 2033cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2034cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = true; 2035068c80cfe0a280490353b6b007165d717c672eedEric Anholt return NULL; 2036cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2037068c80cfe0a280490353b6b007165d717c672eedEric Anholt 203845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick if (formal_parameter && (this->identifier == NULL)) { 203945d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); 204045d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick return NULL; 204145d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick } 204245d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick 2043cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick is_void = false; 20447e2aa91507a5883e33473e0a94215ee3985baad1Ian Romanick ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); 2045a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2046a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* FINISHME: Handle array declarations. Note that this requires 2047a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * FINISHME: complete handling of constant expressions. 2048a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2049a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2050cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick /* Apply any specified qualifiers to the parameter declaration. Note that 2051cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick * for function parameters the default mode is 'in'. 2052cdb8d54b6808b13092cb85e44cf02e4e91c3a669Ian Romanick */ 20532e063f1adf9e529697483eaabc7e015b4b740267Eric Anholt apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); 2054a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20550044e7edcea22d2456c051a1c4b744a26960ad27Ian Romanick instructions->push_tail(var); 2056a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2057a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Parameter declarations do not have r-values. 2058a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2059a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2060a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2061a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2062a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 206345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanickvoid 2064304ea90233baeac6801a98e981658cb7a2d2501cIan Romanickast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, 206545d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick bool formal, 206645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick exec_list *ir_parameters, 206745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick _mesa_glsl_parse_state *state) 2068a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2069cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick ast_parameter_declarator *void_param = NULL; 2070cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick unsigned count = 0; 2071a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 20722b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { 207345d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick param->formal_parameter = formal; 2074068c80cfe0a280490353b6b007165d717c672eedEric Anholt param->hir(ir_parameters, state); 2075cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2076cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if (param->is_void) 2077cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick void_param = param; 2078cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2079cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick count++; 2080cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick } 2081cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2082cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick if ((void_param != NULL) && (count > 1)) { 2083cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick YYLTYPE loc = void_param->get_location(); 2084cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick 2085cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick _mesa_glsl_error(& loc, state, 2086cf37c9e8dad4349e45cb91d36957484fd76ce264Ian Romanick "`void' parameter must be only parameter"); 2087a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2088a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 2089a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2090a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2091fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 209292318a947958892497722772b03c643ebc943294Ian Romanickast_function::hir(exec_list *instructions, 209392318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 2094a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick{ 2095953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 209618238de6c34a1a32c452f1006ed13d8adc1bc9d7Ian Romanick ir_function *f = NULL; 209792318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *sig = NULL; 209892318a947958892497722772b03c643ebc943294Ian Romanick exec_list hir_parameters; 2099a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2100ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke const char *const name = identifier; 2101a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2102a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Convert the list of function parameters to HIR now so that they can be 2103a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * used below to compare this function's signature with previously seen 2104a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * signatures for functions with the same name. 2105a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 210645d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick ast_parameter_declarator::parameters_to_hir(& this->parameters, 210745d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick is_definition, 210845d8a70c12ee6ea956baaf898324a828496382f6Ian Romanick & hir_parameters, state); 2109a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2110e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const char *return_type_name; 2111e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick const glsl_type *return_type = 211292318a947958892497722772b03c643ebc943294Ian Romanick this->return_type->specifier->glsl_type(& return_type_name, state); 2113e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2114e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick assert(return_type != NULL); 2115e39cc69fa3cb830b803fe0c4f6c30915aa886b5bIan Romanick 2116ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: 2117ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke * "No qualifier is allowed on the return type of a function." 2118ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke */ 2119ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke if (this->return_type->has_qualifiers()) { 2120ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke YYLTYPE loc = this->get_location(); 2121ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke _mesa_glsl_error(& loc, state, 2122ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke "function `%s' return type has qualifiers", name); 2123ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke } 2124ac04c257e31fe012dac750bcf5bf3134ba07ebdcKenneth Graunke 2125a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Verify that this function's signature either doesn't match a previously 2126a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * seen signature for a function with the same name, or, if a match is found, 2127a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick * that the previously seen signature does not have an associated definition. 2128a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 21293359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick f = state->symbols->get_function(name); 2130a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick if (f != NULL) { 2131202604e8160157e4e80b3458175e0170d168e557Ian Romanick sig = f->exact_matching_signature(&hir_parameters); 21320d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig != NULL) { 21330d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke const char *badvar = sig->qualifiers_match(&hir_parameters); 21340d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (badvar != NULL) { 21350d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2136abd40b15210c17b2a3ba8fcffc868fda203efa01Kenneth Graunke 21370d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " 21380d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "qualifiers don't match prototype", name, badvar); 21390d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 21401e7ec3ce128a9d30d7d9e1707a22b270eb525075Eric Anholt 21410d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (sig->return_type != return_type) { 21420d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 214360be7626b829af7e1d07330b9a88468924ba350eEric Anholt 21440d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " 21450d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke "match prototype", name); 21460d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke } 2147a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21480d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke if (is_definition && sig->is_defined) { 21490d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke YYLTYPE loc = this->get_location(); 2150a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 21510d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' redefined", name); 21520d605cb97c9cd2f9a170e3aa15bdf4021a75fc14Kenneth Graunke sig = NULL; 2153a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2154a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 21553359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else if (state->symbols->name_declared_this_scope(name)) { 21563359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* This function name shadows a non-function use of the same name. 21573359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 21583359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 21593359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 21603359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "function name `%s' conflicts with " 21613359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick "non-function", name); 216292318a947958892497722772b03c643ebc943294Ian Romanick sig = NULL; 2163a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } else { 21641660a2954797e056caba319c5d6c70b0d4be22feCarl Worth f = new(ctx) ir_function(name); 21658bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->add_function(f->name, f); 21669fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke 21679fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Emit the new function header */ 21689fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke instructions->push_tail(f); 2169a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2170a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2171ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt /* Verify the return type of main() */ 2172ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt if (strcmp(name, "main") == 0) { 217325711a85c22bed305c9b52b89feb9c600d1892dfIan Romanick if (! return_type->is_void()) { 2174ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt YYLTYPE loc = this->get_location(); 2175ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt 2176ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt _mesa_glsl_error(& loc, state, "main() must return void"); 2177ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2178174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 217992318a947958892497722772b03c643ebc943294Ian Romanick if (!hir_parameters.is_empty()) { 2180174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt YYLTYPE loc = this->get_location(); 2181174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt 2182174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt _mesa_glsl_error(& loc, state, "main() must not take any parameters"); 2183174cc03edcd6861ba416cc1afb19d4d43933ac84Eric Anholt } 2184ab372dab2a013e5d0c8ee57bb799a76c9a78abf2Eric Anholt } 2185a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2186a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Finish storing the information about this new function in its signature. 2187a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 218892318a947958892497722772b03c643ebc943294Ian Romanick if (sig == NULL) { 21891660a2954797e056caba319c5d6c70b0d4be22feCarl Worth sig = new(ctx) ir_function_signature(return_type); 219092318a947958892497722772b03c643ebc943294Ian Romanick f->add_signature(sig); 2191a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2192a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 2193bff6013d469b3d4e54cdc5731801c56994a523ecKenneth Graunke sig->replace_parameters(&hir_parameters); 219492318a947958892497722772b03c643ebc943294Ian Romanick signature = sig; 219592318a947958892497722772b03c643ebc943294Ian Romanick 219692318a947958892497722772b03c643ebc943294Ian Romanick /* Function declarations (prototypes) do not have r-values. 219792318a947958892497722772b03c643ebc943294Ian Romanick */ 219892318a947958892497722772b03c643ebc943294Ian Romanick return NULL; 219992318a947958892497722772b03c643ebc943294Ian Romanick} 220092318a947958892497722772b03c643ebc943294Ian Romanick 220192318a947958892497722772b03c643ebc943294Ian Romanick 220292318a947958892497722772b03c643ebc943294Ian Romanickir_rvalue * 220392318a947958892497722772b03c643ebc943294Ian Romanickast_function_definition::hir(exec_list *instructions, 220492318a947958892497722772b03c643ebc943294Ian Romanick struct _mesa_glsl_parse_state *state) 220592318a947958892497722772b03c643ebc943294Ian Romanick{ 220692318a947958892497722772b03c643ebc943294Ian Romanick prototype->is_definition = true; 220792318a947958892497722772b03c643ebc943294Ian Romanick prototype->hir(instructions, state); 2208e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 220992318a947958892497722772b03c643ebc943294Ian Romanick ir_function_signature *signature = prototype->signature; 2210a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 221141ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == NULL); 221241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = signature; 22136de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = false; 221441ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick 2215e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick /* Duplicate parameters declared in the prototype as concrete variables. 2216e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick * Add these to the symbol table. 2217a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 22188bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->push_scope(); 2219e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick foreach_iter(exec_list_iterator, iter, signature->parameters) { 2220fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); 2221e29a5859891eb9e1587396dea0e8010f7d88f68cIan Romanick 2222fbc7c0b8f2e161bce1c048c63d2d5cfcdeb096f1Eric Anholt assert(var != NULL); 2223a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22243359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick /* The only way a parameter would "exist" is if two parameters have 22253359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick * the same name. 22263359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick */ 22273359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick if (state->symbols->name_declared_this_scope(var->name)) { 22283359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick YYLTYPE loc = this->get_location(); 22293359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick 22303359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); 22313359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } else { 22323359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick state->symbols->add_variable(var->name, var); 22333359e58eac19dd7771a78310c8a0e3d3ded55063Ian Romanick } 2234a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick } 2235a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22369fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke /* Convert the body of the function to HIR. */ 2237894ea972a4defdaafeaa3a248c113b06c7ae0c7eEric Anholt this->body->hir(&signature->body, state); 22389fa99f3b6c84fe927ba97e6584cd919f097a6c9aKenneth Graunke signature->is_defined = true; 2239a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22408bde4cec6b189564b1f2d58514bd7e7a4b40f714Ian Romanick state->symbols->pop_scope(); 2241a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 224241ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick assert(state->current_function == signature); 224341ec6a47ab81620bab9182f987e4bc4780e3a6abIan Romanick state->current_function = NULL; 2244a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick 22456de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke if (!signature->return_type->is_void() && !state->found_return) { 22466de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke YYLTYPE loc = this->get_location(); 22476de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " 22486de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke "%s, but no return statement", 22496de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->function_name(), 22506de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke signature->return_type->name); 22516de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke } 22526de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke 2253a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick /* Function definitions do not have r-values. 2254a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick */ 2255a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick return NULL; 2256a87ac255cf7ef0672b4de865d82e6a40c93b57dIan Romanick} 225716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 225816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2259fb9fb5f51deca28ed1ec7b71759fb71fc26a0ab6Kenneth Graunkeir_rvalue * 226016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanickast_jump_statement::hir(exec_list *instructions, 226116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick struct _mesa_glsl_parse_state *state) 226216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick{ 2263953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 226416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2265c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick switch (mode) { 2266c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_return: { 226716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_return *inst; 2268aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt assert(state->current_function); 226916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 227016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick if (opt_return_value) { 2271ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt if (state->current_function->return_type->base_type == 2272ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt GLSL_TYPE_VOID) { 2273ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt YYLTYPE loc = this->get_location(); 2274ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt 2275ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt _mesa_glsl_error(& loc, state, 2276ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "`return` with a value, in function `%s' " 2277ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt "returning void", 2278f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2279ab79d4ec6e7c5639084f71f93857f39239e8b848Eric Anholt } 228016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 228116a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick ir_expression *const ret = (ir_expression *) 228216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick opt_return_value->hir(instructions, state); 228316a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick assert(ret != NULL); 228416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 228518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke /* Implicit conversions are not allowed for return values. */ 228618707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke if (state->current_function->return_type != ret->type) { 228718707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke YYLTYPE loc = this->get_location(); 228818707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke 228918707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke _mesa_glsl_error(& loc, state, 229018707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "`return' with wrong type %s, in function `%s' " 229118707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke "returning %s", 229218707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke ret->type->name, 229318707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->function_name(), 229418707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke state->current_function->return_type->name); 229518707eba1cd6c07fa8b63d0ba5b26f6433f1ae91Kenneth Graunke } 229616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 22971660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return(ret); 229816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } else { 2299aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt if (state->current_function->return_type->base_type != 2300aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt GLSL_TYPE_VOID) { 2301aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt YYLTYPE loc = this->get_location(); 2302aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt 2303aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt _mesa_glsl_error(& loc, state, 2304aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "`return' with no value, in function %s returning " 2305aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt "non-void", 2306f96c52ba2e290e3ba5f14cd7f87ba5b4382a1785Kenneth Graunke state->current_function->function_name()); 2307aad7c7793788f34e98fb7264dc2219fc73002877Eric Anholt } 23081660a2954797e056caba319c5d6c70b0d4be22feCarl Worth inst = new(ctx) ir_return; 230916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 231016a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 23116de825650560198eb97f19e72b2d56e68e3d7a63Kenneth Graunke state->found_return = true; 231216a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick instructions->push_tail(inst); 2313c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 231416a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick } 231516a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick 2316c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_discard: 2317b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt if (state->target != fragment_shader) { 2318b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt YYLTYPE loc = this->get_location(); 2319b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 2320b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt _mesa_glsl_error(& loc, state, 2321b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt "`discard' may only appear in a fragment shader"); 2322b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 232377049a702ad54e09c4102fe8c964e069944f83e5Kenneth Graunke instructions->push_tail(new(ctx) ir_discard); 2324c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2325c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick 2326c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_break: 2327c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick case ast_continue: 23284cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Handle switch-statements. They cannot contain 'continue', 23294cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: and they use a different IR instruction for 'break'. 23304cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 23314cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick /* FINISHME: Correctly handle the nesting. If a switch-statement is 23324cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: inside a loop, a 'continue' is valid and will bind to the 23334cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick * FINISHME: loop. 23344cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick */ 23354cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (state->loop_or_switch_nesting == NULL) { 23364cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick YYLTYPE loc = this->get_location(); 23374cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23384cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick _mesa_glsl_error(& loc, state, 23394cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick "`%s' may only appear in a loop", 23404cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick (mode == ast_break) ? "break" : "continue"); 23414cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } else { 23424cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); 23434cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 23442d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt /* Inline the for loop expression again, since we don't know 23452d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * where near the end of the loop body the normal copy of it 23462d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt * is going to be placed. 23472d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt */ 23482d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt if (mode == ast_continue && 23492d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression) { 23502d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, 23512d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state); 23522d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt } 23532d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 23544cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick if (loop != NULL) { 23554cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick ir_loop_jump *const jump = 23561660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump((mode == ast_break) 23571660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ? ir_loop_jump::jump_break 23581660a2954797e056caba319c5d6c70b0d4be22feCarl Worth : ir_loop_jump::jump_continue); 23594cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick instructions->push_tail(jump); 23604cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23614cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick } 23624cf20cd37c12c6243a09d52739d3d47f030a1799Ian Romanick 2363c0e76d8352fbe96efb0338e9d98b08494671e504Ian Romanick break; 2364b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt } 2365b98020770730bd4a7e9bd5c2e4ab2ae8c1eb0376Eric Anholt 236616a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick /* Jump instructions do not have r-values. 236716a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick */ 236816a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick return NULL; 236916a246c049fa3c8d7841f87c8defdd0f26f302eeIan Romanick} 23703c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23713c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23723c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickir_rvalue * 23733c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanickast_selection_statement::hir(exec_list *instructions, 23743c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick struct _mesa_glsl_parse_state *state) 23753c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick{ 2376953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 23771660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 23783c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick ir_rvalue *const condition = this->condition->hir(instructions, state); 23793c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23803c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: 23813c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23823c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * "Any expression whose type evaluates to a Boolean can be used as the 23833c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * conditional expression bool-expression. Vector types are not accepted 23843c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * as the expression to if." 23853c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * 23863c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * The checks are separated so that higher quality diagnostics can be 23873c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick * generated for cases where both rules are violated. 23883c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 23893c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick if (!condition->type->is_boolean() || !condition->type->is_scalar()) { 23903c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick YYLTYPE loc = this->condition->get_location(); 23913c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23923c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " 23933c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick "boolean"); 23943c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick } 23953c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 23961660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const stmt = new(ctx) ir_if(condition); 23973c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 2398665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (then_statement != NULL) { 2399665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 24004f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick then_statement->hir(& stmt->then_instructions, state); 2401665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 2402665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 24033c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 2404665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke if (else_statement != NULL) { 2405665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->push_scope(); 24064f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick else_statement->hir(& stmt->else_instructions, state); 2407665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke state->symbols->pop_scope(); 2408665d75cc5a23f8024034d0c4176fb281f94a30e9Kenneth Graunke } 24093c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 24103c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick instructions->push_tail(stmt); 24113c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick 24123c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick /* if-statements do not have r-values. 24133c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick */ 24143c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick return NULL; 24153c6fea3048a0d9add2fec621d30c32f3519d8868Ian Romanick} 24169e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24179e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24188c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickvoid 24198c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::condition_to_hir(ir_loop *stmt, 24208c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 24219e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick{ 2422953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 24231660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 24249e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (condition != NULL) { 24259e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const cond = 24269e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick condition->hir(& stmt->body_instructions, state); 24279e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24289e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if ((cond == NULL) 24299e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick || !cond->type->is_boolean() || !cond->type->is_scalar()) { 24309e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick YYLTYPE loc = condition->get_location(); 24319e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24329e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick _mesa_glsl_error(& loc, state, 24339e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick "loop condition must be scalar boolean"); 24349e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } else { 24359e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* As the first code in the loop body, generate a block that looks 24369e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick * like 'if (!condition) break;' as the loop termination condition. 24379e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 24389e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_rvalue *const not_cond = 24391660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, 24401660a2954797e056caba319c5d6c70b0d4be22feCarl Worth NULL); 24419e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24421660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_if *const if_stmt = new(ctx) ir_if(not_cond); 24439e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24449e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick ir_jump *const break_stmt = 24451660a2954797e056caba319c5d6c70b0d4be22feCarl Worth new(ctx) ir_loop_jump(ir_loop_jump::jump_break); 24469e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24479e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if_stmt->then_instructions.push_tail(break_stmt); 24489e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick stmt->body_instructions.push_tail(if_stmt); 24499e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24509e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick } 24518c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick} 24528c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24538c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24548c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickir_rvalue * 24558c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanickast_iteration_statement::hir(exec_list *instructions, 24568c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick struct _mesa_glsl_parse_state *state) 24578c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick{ 2458953ff1283d3d52e6a6b4850c2b0b574111625010Kenneth Graunke void *ctx = state; 24591660a2954797e056caba319c5d6c70b0d4be22feCarl Worth 2460484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick /* For-loops and while-loops start a new scope, but do-while loops do not. 24618c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 2462484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24638c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->symbols->push_scope(); 24648c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24658c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (init_statement != NULL) 24668c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick init_statement->hir(instructions, state); 24678c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24681660a2954797e056caba319c5d6c70b0d4be22feCarl Worth ir_loop *const stmt = new(ctx) ir_loop(); 24698c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick instructions->push_tail(stmt); 24708c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24718c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick /* Track the current loop and / or switch-statement nesting. 24728c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick */ 24738c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick ir_instruction *const nesting = state->loop_or_switch_nesting; 24742d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; 24752d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt 24768c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick state->loop_or_switch_nesting = stmt; 24772d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = this; 24788c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 24798c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode != ast_do_while) 24808c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24819e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24824f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick if (body != NULL) 24834f9d72fa9e2a4ff1a2aca6de8ee4fa93639c75f1Ian Romanick body->hir(& stmt->body_instructions, state); 24849e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24859e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick if (rest_expression != NULL) 24869e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick rest_expression->hir(& stmt->body_instructions, state); 24879e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 24888c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick if (mode == ast_do_while) 24898c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick condition_to_hir(stmt, state); 24908c46ed24906ee10dd2f2cfaf4cf9803eca1ba523Ian Romanick 2491484606610e36ec7598f7733e9787d888b6a63d64Ian Romanick if (mode != ast_do_while) 24929e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick state->symbols->pop_scope(); 24939e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick 2494e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick /* Restore previous nesting before returning. 2495e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick */ 2496e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick state->loop_or_switch_nesting = nesting; 24972d1ed7b1b112cf13dd7eda7f500691f4c98a1cccEric Anholt state->loop_or_switch_nesting_ast = nesting_ast; 2498e9d0f265aabb39928d4d8a527684bf3b9eebc21cIan Romanick 24999e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick /* Loops do not have r-values. 25009e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick */ 25019e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick return NULL; 25029e7d010ee0ed89f1fe07a06a9d9bb22e15106ae2Ian Romanick} 25033455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25043455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25053455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 25063455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_type_specifier::hir(exec_list *instructions, 25073455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 25083455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 25093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick if (this->structure != NULL) 25103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return this->structure->hir(instructions, state); 251185ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick 251285ba37b97df8edd18b757bc475b12b66f4b117edIan Romanick return NULL; 25133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 25143455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25153455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25163455ce614424a5a23a23037e23d0454e476bceeaIan Romanickir_rvalue * 25173455ce614424a5a23a23037e23d0454e476bceeaIan Romanickast_struct_specifier::hir(exec_list *instructions, 25183455ce614424a5a23a23037e23d0454e476bceeaIan Romanick struct _mesa_glsl_parse_state *state) 25193455ce614424a5a23a23037e23d0454e476bceeaIan Romanick{ 25203455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned decl_count = 0; 25213455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25223455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Make an initial pass over the list of structure fields to determine how 25233455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * many there are. Each element in this list is an ast_declarator_list. 25243455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * This means that we actually need to count the number of elements in the 25253455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * 'declarations' list in each of the elements. 25263455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 25272b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 25282b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 2529304ea90233baeac6801a98e981658cb7a2d2501cIan Romanick foreach_list_const (decl_ptr, & decl_list->declarations) { 25303455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_count++; 25313455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25323455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25333455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25343455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25353455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Allocate storage for the structure fields and process the field 25363455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * declarations. As the declarations are processed, try to also convert 25373455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * the types to HIR. This ensures that structure definitions embedded in 25383455ce614424a5a23a23037e23d0454e476bceeaIan Romanick * other structure definitions are processed. 25393455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 254021b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, 254121b0dbd79937e9d6787f045af7d60d4b6c649ec8Eric Anholt decl_count); 25423455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25433455ce614424a5a23a23037e23d0454e476bceeaIan Romanick unsigned i = 0; 25442b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declarator_list, decl_list, link, 25452b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &this->declarations) { 25463455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const char *type_name; 25473455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25483455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->hir(instructions, state); 25493455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25503455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const glsl_type *decl_type = 25513455ce614424a5a23a23037e23d0454e476bceeaIan Romanick decl_list->type->specifier->glsl_type(& type_name, state); 25523455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25532b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick foreach_list_typed (ast_declaration, decl, link, 25542b97dc657a0e762bc67216405419cd348eb948c0Ian Romanick &decl_list->declarations) { 25553455ce614424a5a23a23037e23d0454e476bceeaIan Romanick const struct glsl_type *const field_type = 25563455ce614424a5a23a23037e23d0454e476bceeaIan Romanick (decl->is_array) 25573455ce614424a5a23a23037e23d0454e476bceeaIan Romanick ? process_array_type(decl_type, decl->array_size, state) 25583455ce614424a5a23a23037e23d0454e476bceeaIan Romanick : decl_type; 25593455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 256073986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick fields[i].type = (field_type != NULL) 256173986a7a262807ab2cfd6d46ae17cfc7a30cdfecIan Romanick ? field_type : glsl_type::error_type; 25623455ce614424a5a23a23037e23d0454e476bceeaIan Romanick fields[i].name = decl->identifier; 25633455ce614424a5a23a23037e23d0454e476bceeaIan Romanick i++; 25643455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25653455ce614424a5a23a23037e23d0454e476bceeaIan Romanick } 25663455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25673455ce614424a5a23a23037e23d0454e476bceeaIan Romanick assert(i == decl_count); 25683455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25691d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick const char *name; 25701d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick if (this->name == NULL) { 25711d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick static unsigned anon_count = 1; 25721d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick char buf[32]; 25733455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 25741d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick snprintf(buf, sizeof(buf), "#anon_struct_%04x", anon_count); 25751d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick anon_count++; 25761d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 25771d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = strdup(buf); 25781d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } else { 25791d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick name = this->name; 25801d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick } 25811d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 258249e3577b91f44013746f7a3db411e7041b7d899eIan Romanick const glsl_type *t = 258349e3577b91f44013746f7a3db411e7041b7d899eIan Romanick glsl_type::get_record_instance(fields, decl_count, name); 25841d28b617ba66cfcb1641c9f516146d51aa82b118Ian Romanick 2585ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick YYLTYPE loc = this->get_location(); 2586ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if (!state->symbols->add_type(name, t)) { 2587ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); 2588ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2589ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick /* This logic is a bit tricky. It is an error to declare a structure at 2590ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick * global scope if there is also a function with the same name. 2591ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick */ 2592ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick if ((state->current_function == NULL) 2593ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick && (state->symbols->get_function(name) != NULL)) { 2594ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick _mesa_glsl_error(& loc, state, "name `%s' previously defined", name); 2595ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } else { 2596ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick t->generate_constructor(state->symbols); 2597ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 2598a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick 2599a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick const glsl_type **s = (const glsl_type **) 2600a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick realloc(state->user_structures, 2601a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick sizeof(state->user_structures[0]) * 2602a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick (state->num_user_structures + 1)); 2603a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick if (s != NULL) { 2604a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick s[state->num_user_structures] = t; 2605a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->user_structures = s; 2606a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick state->num_user_structures++; 2607a2c6df556655e3619f5a0cd82b0d11aac37c5692Ian Romanick } 2608ab89927a91a0ea6ffdb56e5e75044472f7277f4aIan Romanick } 26093455ce614424a5a23a23037e23d0454e476bceeaIan Romanick 26103455ce614424a5a23a23037e23d0454e476bceeaIan Romanick /* Structure type definitions do not have r-values. 26113455ce614424a5a23a23037e23d0454e476bceeaIan Romanick */ 26123455ce614424a5a23a23037e23d0454e476bceeaIan Romanick return NULL; 26133455ce614424a5a23a23037e23d0454e476bceeaIan Romanick} 2614