1 // 2 // Copyright 2018 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 // RewriteStructSamplers: Extract structs from samplers. 7 // 8 // This traverser is designed to strip out samplers from structs. It moves them into 9 // separate uniform sampler declarations. This allows the struct to be stored in the 10 // default uniform block. It also requires that we rewrite any functions that take the 11 // struct as an argument. The struct is split into two arguments. 12 // 13 // For example: 14 // struct S { sampler2D samp; int i; }; 15 // uniform S uni; 16 // Is rewritten as: 17 // struct S { int i; }; 18 // uniform S uni; 19 // uniform sampler2D uni_i; 20 21 #ifndef COMPILER_TRANSLATOR_TREEOPS_REWRITESTRUCTSAMPLERS_H_ 22 #define COMPILER_TRANSLATOR_TREEOPS_REWRITESTRUCTSAMPLERS_H_ 23 24 #include "common/angleutils.h" 25 26 namespace sh 27 { 28 class TCompiler; 29 class TIntermBlock; 30 class TSymbolTable; 31 32 ANGLE_NO_DISCARD bool RewriteStructSamplers(TCompiler *compiler, 33 TIntermBlock *root, 34 TSymbolTable *symbolTable, 35 int *removedUniformsCountOut); 36 ANGLE_NO_DISCARD bool RewriteStructSamplersOld(TCompiler *compier, 37 TIntermBlock *root, 38 TSymbolTable *symbolTable, 39 int *removedUniformsCountOut); 40 } // namespace sh 41 42 #endif // COMPILER_TRANSLATOR_TREEOPS_REWRITESTRUCTSAMPLERS_H_ 43