Method GFXGLStateBlock

Engine/source/gfx/gl/gfxGLStateBlock.cpp:38–72

}

GFXGLStateBlock::GFXGLStateBlock(const GFXStateBlockDesc& desc) :
   mDesc(desc),
   mCachedHashValue(desc.getHashValue())
{
   static Map<GFXSamplerStateDesc, U32> mSamplersMap;

   for(int i = 0; i < GFX_TEXTURE_STAGE_COUNT; ++i)
   {
      GLuint &id = mSamplerObjects[i];
      GFXSamplerStateDesc &ssd = mDesc.samplers[i];
      Map<GFXSamplerStateDesc, U32>::Iterator itr =  mSamplersMap.find(ssd);
      if(itr == mSamplersMap.end())
      {
         glGenSamplers(1, &id);

         glSamplerParameteri(id, GL_TEXTURE_MIN_FILTER, minificationFilter(ssd.minFilter, ssd.mipFilter, 1) );
         glSamplerParameteri(id, GL_TEXTURE_MAG_FILTER, GFXGLTextureFilter[ssd.magFilter]);
         glSamplerParameteri(id, GL_TEXTURE_WRAP_S, GFXGLTextureAddress[ssd.addressModeU]);
         glSamplerParameteri(id, GL_TEXTURE_WRAP_T, GFXGLTextureAddress[ssd.addressModeV]);
         glSamplerParameteri(id, GL_TEXTURE_WRAP_R, GFXGLTextureAddress[ssd.addressModeW]);
         
         //compare modes
         const bool comparison = ssd.samplerFunc != GFXCmpNever;
         glSamplerParameteri(id, GL_TEXTURE_COMPARE_MODE, comparison ? GL_COMPARE_R_TO_TEXTURE_ARB : GL_NONE );
         glSamplerParameteri(id, GL_TEXTURE_COMPARE_FUNC, GFXGLCmpFunc[ssd.samplerFunc]);

         if (static_cast< GFXGLDevice* >(GFX)->supportsAnisotropic())
            glSamplerParameterf(id, GL_TEXTURE_MAX_ANISOTROPY_EXT, ssd.maxAnisotropy);

         mSamplersMap[ssd] = id;
      }
      else
         id = itr->value;
   }
}

GFXGLStateBlock::~GFXGLStateBlock()
{