1 // 2 // Copyright (c) 2002-2013 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_OUTPUTHLSL_H_ 8 #define COMPILER_OUTPUTHLSL_H_ 9 10 #include <list> 11 #include <set> 12 #include <map> 13 14 #define GL_APICALL 15 #include <GLES2/gl2.h> 16 17 #include "compiler/intermediate.h" 18 #include "compiler/ParseContext.h" 19 #include "compiler/Uniform.h" 20 21 namespace sh 22 { 23 class UnfoldShortCircuit; 24 25 class OutputHLSL : public TIntermTraverser 26 { 27 public: 28 OutputHLSL(TParseContext &context, const ShBuiltInResources& resources, ShShaderOutput outputType); 29 ~OutputHLSL(); 30 31 void output(); 32 33 TInfoSinkBase &getBodyStream(); 34 const ActiveUniforms &getUniforms(); 35 36 TString typeString(const TType &type); 37 TString textureString(const TType &type); 38 static TString qualifierString(TQualifier qualifier); 39 static TString arrayString(const TType &type); 40 static TString initializer(const TType &type); 41 static TString decorate(const TString &string); // Prepends an underscore to avoid naming clashes 42 static TString decorateUniform(const TString &string, const TType &type); 43 static TString decorateField(const TString &string, const TType &structure); 44 45 protected: 46 void header(); 47 48 // Visit AST nodes and output their code to the body stream 49 void visitSymbol(TIntermSymbol*); 50 void visitConstantUnion(TIntermConstantUnion*); 51 bool visitBinary(Visit visit, TIntermBinary*); 52 bool visitUnary(Visit visit, TIntermUnary*); 53 bool visitSelection(Visit visit, TIntermSelection*); 54 bool visitAggregate(Visit visit, TIntermAggregate*); 55 bool visitLoop(Visit visit, TIntermLoop*); 56 bool visitBranch(Visit visit, TIntermBranch*); 57 58 void traverseStatements(TIntermNode *node); 59 bool isSingleStatement(TIntermNode *node); 60 bool handleExcessiveLoop(TIntermLoop *node); 61 void outputTriplet(Visit visit, const TString &preString, const TString &inString, const TString &postString); 62 void outputLineDirective(int line); 63 TString argumentString(const TIntermSymbol *symbol); 64 int vectorSize(const TType &type) const; 65 66 void addConstructor(const TType &type, const TString &name, const TIntermSequence *parameters); 67 const ConstantUnion *writeConstantUnion(const TType &type, const ConstantUnion *constUnion); 68 69 TString scopeString(unsigned int depthLimit); 70 TString scopedStruct(const TString &typeName); 71 TString structLookup(const TString &typeName); 72 73 TParseContext &mContext; 74 const ShShaderOutput mOutputType; 75 UnfoldShortCircuit *mUnfoldShortCircuit; 76 bool mInsideFunction; 77 78 // Output streams 79 TInfoSinkBase mHeader; 80 TInfoSinkBase mBody; 81 TInfoSinkBase mFooter; 82 83 typedef std::map<TString, TIntermSymbol*> ReferencedSymbols; 84 ReferencedSymbols mReferencedUniforms; 85 ReferencedSymbols mReferencedAttributes; 86 ReferencedSymbols mReferencedVaryings; 87 88 // Parameters determining what goes in the header output 89 bool mUsesTexture2D; 90 bool mUsesTexture2D_bias; 91 bool mUsesTexture2DLod; 92 bool mUsesTexture2DProj; 93 bool mUsesTexture2DProj_bias; 94 bool mUsesTexture2DProjLod; 95 bool mUsesTextureCube; 96 bool mUsesTextureCube_bias; 97 bool mUsesTextureCubeLod; 98 bool mUsesTexture2DLod0; 99 bool mUsesTexture2DLod0_bias; 100 bool mUsesTexture2DProjLod0; 101 bool mUsesTexture2DProjLod0_bias; 102 bool mUsesTextureCubeLod0; 103 bool mUsesTextureCubeLod0_bias; 104 bool mUsesFragColor; 105 bool mUsesFragData; 106 bool mUsesDepthRange; 107 bool mUsesFragCoord; 108 bool mUsesPointCoord; 109 bool mUsesFrontFacing; 110 bool mUsesPointSize; 111 bool mUsesFragDepth; 112 bool mUsesXor; 113 bool mUsesMod1; 114 bool mUsesMod2v; 115 bool mUsesMod2f; 116 bool mUsesMod3v; 117 bool mUsesMod3f; 118 bool mUsesMod4v; 119 bool mUsesMod4f; 120 bool mUsesFaceforward1; 121 bool mUsesFaceforward2; 122 bool mUsesFaceforward3; 123 bool mUsesFaceforward4; 124 bool mUsesAtan2_1; 125 bool mUsesAtan2_2; 126 bool mUsesAtan2_3; 127 bool mUsesAtan2_4; 128 bool mUsesDiscardRewriting; 129 130 int mNumRenderTargets; 131 132 typedef std::set<TString> Constructors; 133 Constructors mConstructors; 134 135 typedef std::set<TString> StructNames; 136 StructNames mStructNames; 137 138 typedef std::list<TString> StructDeclarations; 139 StructDeclarations mStructDeclarations; 140 141 typedef std::vector<int> ScopeBracket; 142 ScopeBracket mScopeBracket; 143 unsigned int mScopeDepth; 144 145 int mUniqueIndex; // For creating unique names 146 147 bool mContainsLoopDiscontinuity; 148 bool mOutputLod0Function; 149 bool mInsideDiscontinuousLoop; 150 151 TIntermSymbol *mExcessiveLoopIndex; 152 153 int mUniformRegister; 154 int mSamplerRegister; 155 156 TString registerString(TIntermSymbol *operand); 157 int samplerRegister(TIntermSymbol *sampler); 158 int uniformRegister(TIntermSymbol *uniform); 159 void declareUniform(const TType &type, const TString &name, int index); 160 static GLenum glVariableType(const TType &type); 161 static GLenum glVariablePrecision(const TType &type); 162 163 ActiveUniforms mActiveUniforms; 164 }; 165 } 166 167 #endif // COMPILER_OUTPUTHLSL_H_ 168
