kc3-lang/angle/src/compiler/Uniform.h

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• Hash : 70961b33
  Author :
  Date : 2013-05-30T00:17:48
  

  Add support for structures in interface and uniform blocks.
  
  Also redesigns the uniform block layout computation to be more general.
  
  TRAC #23018
  
  Signed-off-by: Geoff Lang
  Signed-off-by: Nicolas Capens
  Author: Jamie Madill
  
  git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2387 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/compiler/Uniform.h

• //
  // Copyright (c) 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_UNIFORM_H_
  #define COMPILER_UNIFORM_H_
  
  #include <string>
  #include <vector>
  
  #define GL_APICALL
  #include <GLES3/gl3.h>
  #include <GLES2/gl2.h>
  
  namespace sh
  {
  
  struct Uniform
  {
      Uniform(GLenum type, GLenum precision, const char *name, unsigned int arraySize, unsigned int registerIndex);
  
      GLenum type;
      GLenum precision;
      std::string name;
      unsigned int arraySize;
  
      unsigned int registerIndex;
  
      std::vector<Uniform> fields;
  };
  
  typedef std::vector<Uniform> ActiveUniforms;
  
  struct BlockMemberInfo
  {
      BlockMemberInfo(int offset, int arrayStride, int matrixStride, bool isRowMajorMatrix);
  
      int offset;
      int arrayStride;
      int matrixStride;
      bool isRowMajorMatrix;
  
      static const BlockMemberInfo defaultBlockInfo;
  };
  
  typedef std::vector<BlockMemberInfo> BlockMemberInfoArray;
  
  enum BlockLayoutType
  {
      BLOCKLAYOUT_STANDARD,
      BLOCKLAYOUT_PACKED,
      BLOCKLAYOUT_SHARED
  };
  
  struct InterfaceBlock
  {
      InterfaceBlock(const char *name, unsigned int arraySize, unsigned int registerIndex);
  
      std::string name;
      unsigned int arraySize;
      ActiveUniforms activeUniforms;
      size_t dataSize;
      std::vector<BlockMemberInfo> blockInfo;
      BlockLayoutType layout;
  
      unsigned int registerIndex;
  
      void setBlockLayout(BlockLayoutType newLayout);
  
    private:
      void getBlockLayoutInfo(const sh::ActiveUniforms &fields, unsigned int *currentOffset);
      bool getBlockLayoutInfo(const sh::Uniform &uniform, unsigned int *currentOffset, int *arrayStrideOut, int *matrixStrideOut);
      void getD3DLayoutInfo(const sh::Uniform &uniform, unsigned int *currentOffset, int *arrayStrideOut, int *matrixStrideOut);
      void getStandardLayoutInfo(const sh::Uniform &uniform, unsigned int *currentOffset, int *arrayStrideOut, int *matrixStrideOut);
  };
  
  typedef std::vector<InterfaceBlock> ActiveInterfaceBlocks;
  
  }
  
  #endif   // COMPILER_UNIFORM_H_
  

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