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

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• Hash : 618bebcd
  Author :
  Date : 2016-01-15T16:40:00
  

  Pass texture base level to shaders on D3D11
  
  The base level is passed to shaders in an array included in the driver
  uniform block. This is done on feature levels above 9_3, which treat
  samplers as indices to sampler arrays in shaders.
  
  A separate uniform block couldn't be used for the sampler metadata,
  since that would bring the number of available uniform blocks down to
  below minimum level defined by GLES 3.0.
  
  BUG=angleproject:596
  TEST=angle_end2end_tests
  
  Change-Id: Ie040521402f9996d51a978aeeba9222e9dd761ce
  Reviewed-on: https://chromium-review.googlesource.com/326290
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  

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• src/compiler/translator/UniformHLSL.h

• //
  // Copyright (c) 2014 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.
  //
  // UniformHLSL.h:
  //   Methods for GLSL to HLSL translation for uniforms and interface blocks.
  //
  
  #ifndef COMPILER_TRANSLATOR_UNIFORMHLSL_H_
  #define COMPILER_TRANSLATOR_UNIFORMHLSL_H_
  
  #include "compiler/translator/OutputHLSL.h"
  #include "compiler/translator/UtilsHLSL.h"
  
  namespace sh
  {
  class StructureHLSL;
  
  class UniformHLSL : angle::NonCopyable
  {
    public:
      UniformHLSL(StructureHLSL *structureHLSL, ShShaderOutput outputType, const std::vector<Uniform> &uniforms);
  
      void reserveUniformRegisters(unsigned int registerCount);
      void reserveInterfaceBlockRegisters(unsigned int registerCount);
      void outputHLSLSamplerUniformGroup(TInfoSinkBase &out,
                                         const HLSLTextureSamplerGroup textureGroup,
                                         const TVector<const TIntermSymbol *> &group,
                                         unsigned int *groupTextureRegisterIndex);
      void uniformsHeader(TInfoSinkBase &out,
                          ShShaderOutput outputType,
                          const ReferencedSymbols &referencedUniforms);
  
      // Must be called after uniformsHeader
      void samplerMetadataUniforms(TInfoSinkBase &out, const char *reg);
  
      TString interfaceBlocksHeader(const ReferencedSymbols &referencedInterfaceBlocks);
  
      // Used for direct index references
      static TString interfaceBlockInstanceString(const TInterfaceBlock& interfaceBlock, unsigned int arrayIndex);
  
      const std::map<std::string, unsigned int> &getInterfaceBlockRegisterMap() const
      {
          return mInterfaceBlockRegisterMap;
      }
      const std::map<std::string, unsigned int> &getUniformRegisterMap() const
      {
          return mUniformRegisterMap;
      }
  
    private:
      TString interfaceBlockString(const TInterfaceBlock &interfaceBlock, unsigned int registerIndex, unsigned int arrayIndex);
      TString interfaceBlockMembersString(const TInterfaceBlock &interfaceBlock, TLayoutBlockStorage blockStorage);
      TString interfaceBlockStructString(const TInterfaceBlock &interfaceBlock);
      const Uniform *findUniformByName(const TString &name) const;
  
      // Returns the uniform's register index
      unsigned int declareUniformAndAssignRegister(const TType &type,
                                                   const TString &name,
                                                   unsigned int *registerCount);
      unsigned int declareUniformAndAssignRegister(const TType &type, const TString &name);
  
      unsigned int mUniformRegister;
      unsigned int mInterfaceBlockRegister;
      unsigned int mSamplerRegister;
      StructureHLSL *mStructureHLSL;
      ShShaderOutput mOutputType;
  
      const std::vector<Uniform> &mUniforms;
      std::map<std::string, unsigned int> mInterfaceBlockRegisterMap;
      std::map<std::string, unsigned int> mUniformRegisterMap;
  };
  
  }
  
  #endif // COMPILER_TRANSLATOR_UNIFORMHLSL_H_
  

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