StructureHLSL.h (3365B)
1 // 2 // Copyright 2014 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 // StructureHLSL.h: 7 // HLSL translation of GLSL constructors and structures. 8 // 9 10 #ifndef COMPILER_TRANSLATOR_STRUCTUREHLSL_H_ 11 #define COMPILER_TRANSLATOR_STRUCTUREHLSL_H_ 12 13 #include "compiler/translator/Common.h" 14 #include "compiler/translator/IntermNode.h" 15 16 #include <set> 17 18 class TInfoSinkBase; 19 class TScopeBracket; 20 21 namespace sh 22 { 23 24 // This helper class assists structure and interface block definitions in determining 25 // how to pack std140 structs within HLSL's packing rules. 26 class Std140PaddingHelper 27 { 28 public: 29 explicit Std140PaddingHelper(const std::map<TString, int> &structElementIndexes, 30 unsigned int *uniqueCounter); 31 Std140PaddingHelper(const Std140PaddingHelper &other); 32 Std140PaddingHelper &operator=(const Std140PaddingHelper &other); 33 34 int elementIndex() const { return mElementIndex; } 35 int prePadding(const TType &type, bool forcePadding); 36 TString prePaddingString(const TType &type, bool forcePadding); 37 TString postPaddingString(const TType &type, 38 bool useHLSLRowMajorPacking, 39 bool isLastElement, 40 bool forcePadding); 41 42 private: 43 TString next(); 44 45 unsigned *mPaddingCounter; 46 int mElementIndex; 47 const std::map<TString, int> *mStructElementIndexes; 48 }; 49 50 class StructureHLSL : angle::NonCopyable 51 { 52 public: 53 StructureHLSL(); 54 55 // Returns the name of the constructor function. 56 TString addStructConstructor(const TStructure &structure); 57 TString addBuiltInConstructor(const TType &type, const TIntermSequence *parameters); 58 59 static TString defineNameless(const TStructure &structure); 60 void ensureStructDefined(const TStructure &structure); 61 62 std::string structsHeader() const; 63 64 Std140PaddingHelper getPaddingHelper(); 65 66 private: 67 unsigned mUniquePaddingCounter; 68 69 std::map<TString, int> mStd140StructElementIndexes; 70 71 struct TStructProperties : public angle::NonCopyable 72 { 73 POOL_ALLOCATOR_NEW_DELETE 74 75 TStructProperties() {} 76 77 // Constructor is an empty string in case the struct doesn't have a constructor yet. 78 TString constructor; 79 }; 80 81 // Map from struct name to struct properties. 82 typedef std::map<TString, TStructProperties *> DefinedStructs; 83 DefinedStructs mDefinedStructs; 84 85 // Struct declarations need to be kept in a vector instead of having them inside mDefinedStructs 86 // since maintaining the original order is necessary for nested structs. 87 typedef std::vector<TString> StructDeclarations; 88 StructDeclarations mStructDeclarations; 89 90 typedef std::set<TString> BuiltInConstructors; 91 BuiltInConstructors mBuiltInConstructors; 92 93 void storeStd140ElementIndex(const TStructure &structure, bool useHLSLRowMajorPacking); 94 TString defineQualified(const TStructure &structure, 95 bool useHLSLRowMajorPacking, 96 bool useStd140Packing, 97 bool forcePackingEnd); 98 DefinedStructs::iterator defineVariants(const TStructure &structure, const TString &name); 99 }; 100 } // namespace sh 101 102 #endif // COMPILER_TRANSLATOR_STRUCTUREHLSL_H_