/home/master/UCL/VisualizationLibrary/src/vlGraphics/RenderStateSet.cpp

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/**************************************************************************************/
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/*  Visualization Library                                                             */
/*  http://visualizationlibrary.org                                                   */
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/*  Copyright (c) 2005-2010, Michele Bosi                                             */
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#include <vlGraphics/RenderStateSet.hpp>
#include <vlGraphics/RenderState.hpp>
#include <vlGraphics/GLSL.hpp>

using namespace vl;

//------------------------------------------------------------------------------
RenderStateSet& RenderStateSet::deepCopyFrom(const RenderStateSet& other)
{
  mRenderStates = other.mRenderStates;
  for(size_t i=0; i<mRenderStates.size(); ++i)
    mRenderStates[i].mRS = mRenderStates[i].mRS->clone();
  return *this;
}
//------------------------------------------------------------------------------
void RenderStateSet::setRenderState(RenderState* renderstate, int index)
{
  if (renderstate)
  {
    if (renderstate->type() == RS_GLSLProgram)
      mGLSLProgram = static_cast<GLSLProgram*>(renderstate);
    for(unsigned i=0; i<mRenderStates.size(); ++i)
    {
      if (mRenderStates[i].mRS->type() == renderstate->type() && mRenderStates[i].mIndex == index)
      {
        mRenderStates[i].mRS = renderstate;
        // mRenderStates[i].mIndex = index;
        return;
      }
    }
    mRenderStates.push_back( RenderStateSlot(renderstate, index) );
  }
}
//------------------------------------------------------------------------------
RenderState* RenderStateSet::renderState( ERenderState type, int index )
{
  for(unsigned i=0; i<mRenderStates.size(); ++i)
    if (mRenderStates[i].mRS->type() == type && mRenderStates[i].mIndex == index)
      return mRenderStates[i].mRS.get();
  return NULL;
}
//------------------------------------------------------------------------------
const RenderState* RenderStateSet::renderState( ERenderState type, int index ) const
{
  for(unsigned i=0; i<mRenderStates.size(); ++i)
    if (mRenderStates[i].mRS->type() == type && mRenderStates[i].mIndex == index)
      return mRenderStates[i].mRS.get();
  return NULL;
}
//------------------------------------------------------------------------------
void RenderStateSet::eraseRenderState(ERenderState type, int index)
{
  if (type == RS_GLSLProgram)
    mGLSLProgram = NULL;
  for(unsigned i=0; i<mRenderStates.size(); ++i)
  {
    if (mRenderStates[i].mRS->type() == type && (index == mRenderStates[i].mIndex || index == -1))
    {
      mRenderStates.erase(mRenderStates.begin() + i);
      if (index == -1)
        continue; // just for clarity
      else
        return;
    }
  }
}
//------------------------------------------------------------------------------