1 // 2 // Copyright 2020 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 7 #ifndef COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_ 8 #define COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_ 9 10 #include <unordered_set> 11 12 #include "compiler/translator/Compiler.h" 13 14 namespace sh 15 { 16 17 // Tracks TVariables and TFields that are marked as "invariant". 18 class Invariants 19 { 20 public: insert(const TVariable & var)21 void insert(const TVariable &var) { mInvariants.insert(&var); } 22 insert(const TField & field)23 void insert(const TField &field) { mInvariants.insert(&field); } 24 contains(const TVariable & var)25 bool contains(const TVariable &var) const 26 { 27 return mInvariants.find(&var) != mInvariants.end(); 28 } 29 contains(const TField & field)30 bool contains(const TField &field) const 31 { 32 return mInvariants.find(&field) != mInvariants.end(); 33 } 34 35 private: 36 std::unordered_set<const void *> mInvariants; 37 }; 38 39 // This rewrites TIntermGlobalQualifierDeclarations as TIntermDeclarations. 40 // `outInvariants` is populated with the information that would otherwise be lost by such a 41 // transform. 42 ANGLE_NO_DISCARD bool RewriteGlobalQualifierDecls(TCompiler &compiler, 43 TIntermBlock &root, 44 Invariants &outInvariants); 45 46 } // namespace sh 47 48 #endif // COMPILER_TRANSLATOR_TRANSLATORMETALDIRECT_REWRITEGLOBALQUALIFIERDECLS_H_ 49