gistfile1.cpp

while ( mat->setupPass( state, sgData ) )
{
   if (alternateCache) {
      activeTarget->attachTexture(GFXTextureTarget::RenderSlot::Color1, opacityCache2);
      
      if (mat->isCurrentPassValid() && mat->getCurrentPass().opacityMapConst->isValid())
         GFX->setTexture(mat->getCurrentPass().opacityMapConst->getSamplerRegister(), opacityCache1);
   }
   else {
      activeTarget->attachTexture(GFXTextureTarget::RenderSlot::Color1, opacityCache1);

      if (mat->isCurrentPassValid() && mat->getCurrentPass().opacityMapConst->isValid())
         GFX->setTexture(mat->getCurrentPass().opacityMapConst->getSamplerRegister(), opacityCache2);
   }
   alternateCache = !alternateCache;
   ++smDrawCalls;
   GFX->drawPrimitive( (*inst)->prim );
}