kc3-lang/angle/src/compiler/translator/OutputGLSLBase.h

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• Hash : e794cd86
  Author :
  Date : 2017-01-13T17:29:51
  

  Vulkan: Implement new GLSL translator back-end.
  
  The Vulkan GLSL translator back-end will handle validating and
  translating our WebGL/ESSL shaders into Vulkan-specific GLSL.
  
  glslang (the Vulkan one) accepts both GLSL and GLSL ES shaders
  as inputs, and both the desktop and ESSL back-ends give
  incompleteness warnings when used. For now, use the desktop GL
  450 as a target for Vulkan GLSL.
  
  The Vulkan-specific changes are currently only to add locations
  to every vertex input and fragment output.
  
  BUG=angleproject:1575
  
  Change-Id: I7c3f32f522e9d18e5f8618eb7927336bf4fbdcf2
  Reviewed-on: https://chromium-review.googlesource.com/412266
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/compiler/translator/OutputGLSLBase.h

• //
  // Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  #ifndef COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
  #define COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
  
  #include <set>
  
  #include "compiler/translator/IntermNode.h"
  #include "compiler/translator/ParseContext.h"
  
  namespace sh
  {
  
  class TOutputGLSLBase : public TIntermTraverser
  {
    public:
      TOutputGLSLBase(TInfoSinkBase &objSink,
                      ShArrayIndexClampingStrategy clampingStrategy,
                      ShHashFunction64 hashFunction,
                      NameMap &nameMap,
                      TSymbolTable &symbolTable,
                      sh::GLenum shaderType,
                      int shaderVersion,
                      ShShaderOutput output,
                      ShCompileOptions compileOptions);
  
      ShShaderOutput getShaderOutput() const { return mOutput; }
  
      // Return the original name if hash function pointer is NULL;
      // otherwise return the hashed name. Has special handling for internal names, which are not
      // hashed.
      TString hashName(const TName &name);
  
    protected:
      TInfoSinkBase &objSink() { return mObjSink; }
      void writeFloat(TInfoSinkBase &out, float f);
      void writeTriplet(Visit visit, const char *preStr, const char *inStr, const char *postStr);
      virtual void writeLayoutQualifier(const TType &type);
      void writeInvariantQualifier(const TType &type);
      void writeVariableType(const TType &type);
      virtual bool writeVariablePrecision(TPrecision precision) = 0;
      void writeFunctionParameters(const TIntermSequence &args);
      const TConstantUnion *writeConstantUnion(const TType &type, const TConstantUnion *pConstUnion);
      void writeConstructorTriplet(Visit visit, const TType &type);
      TString getTypeName(const TType &type);
  
      void visitSymbol(TIntermSymbol *node) override;
      void visitConstantUnion(TIntermConstantUnion *node) override;
      bool visitSwizzle(Visit visit, TIntermSwizzle *node) override;
      bool visitBinary(Visit visit, TIntermBinary *node) override;
      bool visitUnary(Visit visit, TIntermUnary *node) override;
      bool visitTernary(Visit visit, TIntermTernary *node) override;
      bool visitIfElse(Visit visit, TIntermIfElse *node) override;
      bool visitSwitch(Visit visit, TIntermSwitch *node) override;
      bool visitCase(Visit visit, TIntermCase *node) override;
      bool visitFunctionPrototype(Visit visit, TIntermFunctionPrototype *node) override;
      bool visitFunctionDefinition(Visit visit, TIntermFunctionDefinition *node) override;
      bool visitAggregate(Visit visit, TIntermAggregate *node) override;
      bool visitBlock(Visit visit, TIntermBlock *node) override;
      bool visitInvariantDeclaration(Visit visit, TIntermInvariantDeclaration *node) override;
      bool visitDeclaration(Visit visit, TIntermDeclaration *node) override;
      bool visitLoop(Visit visit, TIntermLoop *node) override;
      bool visitBranch(Visit visit, TIntermBranch *node) override;
  
      void visitCodeBlock(TIntermBlock *node);
  
      // Same as hashName(), but without hashing built-in variables.
      TString hashVariableName(const TName &name);
      // Same as hashName(), but without hashing built-in functions and with unmangling.
      TString hashFunctionNameIfNeeded(const TName &mangledName);
      // Used to translate function names for differences between ESSL and GLSL
      virtual TString translateTextureFunction(TString &name) { return name; }
  
    private:
      bool structDeclared(const TStructure *structure) const;
      void declareStruct(const TStructure *structure);
  
      void declareInterfaceBlockLayout(const TInterfaceBlock *interfaceBlock);
      void declareInterfaceBlock(const TInterfaceBlock *interfaceBlock);
  
      void writeBuiltInFunctionTriplet(Visit visit, TOperator op, bool useEmulatedFunction);
  
      const char *mapQualifierToString(TQualifier qialifier);
  
      TInfoSinkBase &mObjSink;
      bool mDeclaringVariables;
  
      // This set contains all the ids of the structs from every scope.
      std::set<int> mDeclaredStructs;
  
      ShArrayIndexClampingStrategy mClampingStrategy;
  
      // name hashing.
      ShHashFunction64 mHashFunction;
  
      NameMap &mNameMap;
  
      TSymbolTable &mSymbolTable;
  
      sh::GLenum mShaderType;
  
      const int mShaderVersion;
  
      ShShaderOutput mOutput;
  
      ShCompileOptions mCompileOptions;
  };
  
  }  // namespace sh
  
  #endif  // COMPILER_TRANSLATOR_OUTPUTGLSLBASE_H_
  

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