kc3-lang/angle/src/libGLESv2/Uniform.cpp

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• Author : shannonwoods@chromium.org
  Date : 2013-05-30 00:11:59
  Hash : a2ecfccc
  Message : Moved utilities.h/cpp and mathutils.h to the shared common code folder. The HLSL translator needs to compute the sizes of various GL types for computing block layouts. TRAC #22930 Signed-off-by: Nicolas Capens Signed-off-by: Geoff Lang Author: Jamie Madill git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2342 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/Uniform.cpp

• #include "precompiled.h"
  //
  // Copyright (c) 2010-2013 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.
  //
  
  #include "libGLESv2/Uniform.h"
  
  #include "common/utilities.h"
  
  namespace gl
  {
  
  Uniform::Uniform(GLenum type, GLenum precision, const std::string &name, unsigned int arraySize, const int blockIndex, const sh::BlockMemberInfo &blockInfo)
      : type(type),
        precision(precision),
        name(name),
        arraySize(arraySize),
        blockIndex(blockIndex),
        blockInfo(blockInfo),
        data(NULL),
        dirty(true),
        psRegisterIndex(GL_INVALID_INDEX),
        vsRegisterIndex(GL_INVALID_INDEX),
        registerCount(0)
  {
      // We use data storage for default block uniforms to cache values that are sent to D3D during rendering
      // Uniform blocks/buffers are treated separately by the Renderer (ES3 path only)
      if (isInDefaultBlock())
      {
          size_t bytes = UniformInternalSize(type) * elementCount();
          data = new unsigned char[bytes];
          memset(data, 0, bytes);
          registerCount = VariableRowCount(type) * elementCount();
      }
  }
  
  Uniform::~Uniform()
  {
      delete[] data;
  }
  
  bool Uniform::isArray() const
  {
      return arraySize > 0;
  }
  
  unsigned int Uniform::elementCount() const
  {
      return arraySize > 0 ? arraySize : 1;
  }
  
  bool Uniform::isReferencedByVertexShader() const
  {
      return vsRegisterIndex != GL_INVALID_INDEX;
  }
  
  bool Uniform::isReferencedByFragmentShader() const
  {
      return psRegisterIndex != GL_INVALID_INDEX;
  }
  
  bool Uniform::isInDefaultBlock() const
  {
      return blockIndex == -1;
  }
  
  UniformBlock::UniformBlock(const std::string &name, unsigned int elementIndex, unsigned int dataSize)
      : name(name),
        elementIndex(elementIndex),
        dataSize(dataSize),
        psRegisterIndex(GL_INVALID_INDEX),
        vsRegisterIndex(GL_INVALID_INDEX)
  {
  }
  
  bool UniformBlock::isArrayElement() const
  {
      return elementIndex != GL_INVALID_INDEX;
  }
  
  bool UniformBlock::isReferencedByVertexShader() const
  {
      return vsRegisterIndex != GL_INVALID_INDEX;
  }
  
  bool UniformBlock::isReferencedByFragmentShader() const
  {
      return psRegisterIndex != GL_INVALID_INDEX;
  }
  
  }