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 // RewriteRepeatedAssignToSwizzled.h: Rewrite expressions that assign an assignment to a swizzled 7 // vector, like: 8 // v.x = z = expression; 9 // to: 10 // z = expression; 11 // v.x = z; 12 // 13 // Note that this doesn't handle some corner cases: expressions nested inside other expressions, 14 // inside loop headers, or inside if conditions. 15 16 #ifndef COMPILER_TRANSLATOR_TREEOPS_GLSL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_ 17 #define COMPILER_TRANSLATOR_TREEOPS_GLSL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_ 18 19 #include "common/angleutils.h" 20 #include "common/debug.h" 21 22 namespace sh 23 { 24 25 class TCompiler; 26 class TIntermBlock; 27 28 #ifdef ANGLE_ENABLE_GLSL 29 [[nodiscard]] bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler, TIntermBlock *root); 30 #else RewriteRepeatedAssignToSwizzled(TCompiler * compiler,TIntermBlock * root)31[[nodiscard]] ANGLE_INLINE bool RewriteRepeatedAssignToSwizzled(TCompiler *compiler, 32 TIntermBlock *root) 33 { 34 UNREACHABLE(); 35 return false; 36 } 37 #endif 38 39 } // namespace sh 40 41 #endif // COMPILER_TRANSLATOR_TREEOPS_GLSL_REWRITEREPEATEDASSIGNTOSWIZZLED_H_ 42