kc3-lang/angle/src/libANGLE/Uniform.cpp

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• Hash : 0af8b596
  Author :
  Date : 2019-09-03T16:24:45
  

  D3D11: Translate uniform blocks to StructuredBuffer when necessary
  
  fxc exhibits slow compile performance with dynamic cbuffer indexing.
  So when a uniform block contains only one large array member, which is
  an array of structures, translate this uniform block to
  a StructuredBuffer instead.
  
  Bug: angleproject:3682
  TEST=angle_end2end_tests.UniformBufferTest.*
  Change-Id: Ife80dba8aae65b761737e095895e00a570230f88
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1782046
  Commit-Queue: Xinghua Cao <xinghua.cao@intel.com>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/Uniform.cpp

• //
  // Copyright 2010 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.
  //
  
  #include "libANGLE/Uniform.h"
  
  #include <cstring>
  
  namespace gl
  {
  
  ActiveVariable::ActiveVariable() {}
  
  ActiveVariable::~ActiveVariable() {}
  
  ActiveVariable::ActiveVariable(const ActiveVariable &rhs) = default;
  ActiveVariable &ActiveVariable::operator=(const ActiveVariable &rhs) = default;
  
  void ActiveVariable::setActive(ShaderType shaderType, bool used)
  {
      ASSERT(shaderType != ShaderType::InvalidEnum);
      mActiveUseBits.set(shaderType, used);
  }
  
  void ActiveVariable::unionReferencesWith(const ActiveVariable &other)
  {
      mActiveUseBits |= other.mActiveUseBits;
  }
  
  ShaderType ActiveVariable::getFirstShaderTypeWhereActive() const
  {
      return static_cast<ShaderType>(ScanForward(mActiveUseBits.bits()));
  }
  
  GLuint ActiveVariable::activeShaderCount() const
  {
      return static_cast<GLuint>(mActiveUseBits.count());
  }
  
  LinkedUniform::LinkedUniform()
      : typeInfo(nullptr), bufferIndex(-1), blockInfo(sh::kDefaultBlockMemberInfo)
  {}
  
  LinkedUniform::LinkedUniform(GLenum typeIn,
                               GLenum precisionIn,
                               const std::string &nameIn,
                               const std::vector<unsigned int> &arraySizesIn,
                               const int bindingIn,
                               const int offsetIn,
                               const int locationIn,
                               const int bufferIndexIn,
                               const sh::BlockMemberInfo &blockInfoIn)
      : typeInfo(&GetUniformTypeInfo(typeIn)), bufferIndex(bufferIndexIn), blockInfo(blockInfoIn)
  {
      type       = typeIn;
      precision  = precisionIn;
      name       = nameIn;
      arraySizes = arraySizesIn;
      binding    = bindingIn;
      offset     = offsetIn;
      location   = locationIn;
      ASSERT(!isArrayOfArrays());
      ASSERT(!isArray() || !isStruct());
  }
  
  LinkedUniform::LinkedUniform(const sh::ShaderVariable &uniform)
      : sh::ShaderVariable(uniform),
        typeInfo(&GetUniformTypeInfo(type)),
        bufferIndex(-1),
        blockInfo(sh::kDefaultBlockMemberInfo)
  {
      ASSERT(!isArrayOfArrays());
      ASSERT(!isArray() || !isStruct());
  }
  
  LinkedUniform::LinkedUniform(const LinkedUniform &uniform)
      : sh::ShaderVariable(uniform),
        ActiveVariable(uniform),
        typeInfo(uniform.typeInfo),
        bufferIndex(uniform.bufferIndex),
        blockInfo(uniform.blockInfo),
        outerArraySizes(uniform.outerArraySizes)
  {}
  
  LinkedUniform &LinkedUniform::operator=(const LinkedUniform &uniform)
  {
      sh::ShaderVariable::operator=(uniform);
      ActiveVariable::operator    =(uniform);
      typeInfo                    = uniform.typeInfo;
      bufferIndex                 = uniform.bufferIndex;
      blockInfo                   = uniform.blockInfo;
      outerArraySizes             = uniform.outerArraySizes;
      return *this;
  }
  
  LinkedUniform::~LinkedUniform() {}
  
  BufferVariable::BufferVariable()
      : bufferIndex(-1), blockInfo(sh::kDefaultBlockMemberInfo), topLevelArraySize(-1)
  {}
  
  BufferVariable::BufferVariable(GLenum typeIn,
                                 GLenum precisionIn,
                                 const std::string &nameIn,
                                 const std::vector<unsigned int> &arraySizesIn,
                                 const int bufferIndexIn,
                                 const sh::BlockMemberInfo &blockInfoIn)
      : bufferIndex(bufferIndexIn), blockInfo(blockInfoIn), topLevelArraySize(-1)
  {
      type       = typeIn;
      precision  = precisionIn;
      name       = nameIn;
      arraySizes = arraySizesIn;
  }
  
  BufferVariable::~BufferVariable() {}
  
  ShaderVariableBuffer::ShaderVariableBuffer() : binding(0), dataSize(0) {}
  
  ShaderVariableBuffer::ShaderVariableBuffer(const ShaderVariableBuffer &other) = default;
  
  ShaderVariableBuffer::~ShaderVariableBuffer() {}
  
  int ShaderVariableBuffer::numActiveVariables() const
  {
      return static_cast<int>(memberIndexes.size());
  }
  
  InterfaceBlock::InterfaceBlock() : isArray(false), arrayElement(0) {}
  
  InterfaceBlock::InterfaceBlock(const std::string &nameIn,
                                 const std::string &mappedNameIn,
                                 bool isArrayIn,
                                 unsigned int arrayElementIn,
                                 unsigned int firstFieldArraySizeIn,
                                 int bindingIn)
      : name(nameIn),
        mappedName(mappedNameIn),
        isArray(isArrayIn),
        arrayElement(arrayElementIn),
        firstFieldArraySize(firstFieldArraySizeIn)
  {
      binding = bindingIn;
  }
  
  std::string InterfaceBlock::nameWithArrayIndex() const
  {
      std::stringstream fullNameStr;
      fullNameStr << name;
      if (isArray)
      {
          fullNameStr << "[" << arrayElement << "]";
      }
  
      return fullNameStr.str();
  }
  
  std::string InterfaceBlock::mappedNameWithArrayIndex() const
  {
      std::stringstream fullNameStr;
      fullNameStr << mappedName;
      if (isArray)
      {
          fullNameStr << "[" << arrayElement << "]";
      }
  
      return fullNameStr.str();
  }
  }  // namespace gl
  

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