Method _render

Engine/source/lighting/shadowMap/pssmLightShadowMap.cpp:198–397

}

void PSSMLightShadowMap::_render(   RenderPassManager* renderPass,
                                    const SceneRenderState *diffuseState )
{
   PROFILE_SCOPE(PSSMLightShadowMap_render);

   const ShadowMapParams *params = mLight->getExtended<ShadowMapParams>();
   const LightMapParams *lmParams = mLight->getExtended<LightMapParams>();
   const bool bUseLightmappedGeometry = lmParams ? !lmParams->representedInLightmap || lmParams->includeLightmappedGeometryInShadow : true;

   const U32 texSize = getBestTexSize( params->numSplits < 4 ? params->numSplits : 2 );

   if (  mShadowMapTex.isNull() || 
         mNumSplits != params->numSplits || 
         mTexSize != texSize )
   {
      _setNumSplits( params->numSplits, texSize );
      mShadowMapDepth = _getDepthTarget( mShadowMapTex->getWidth(), mShadowMapTex->getHeight() );   
   }
   mLogWeight = params->logWeight;

   Frustum fullFrustum( diffuseState->getCameraFrustum() );
   fullFrustum.cropNearFar(fullFrustum.getNearDist(), params->shadowDistance);

   GFXFrustumSaver frustSaver;
   GFXTransformSaver saver;

   // Set our render target
   GFX->pushActiveRenderTarget();
   mTarget->attachTexture( GFXTextureTarget::Color0, mShadowMapTex );
   mTarget->attachTexture( GFXTextureTarget::DepthStencil, mShadowMapDepth );
   GFX->setActiveRenderTarget( mTarget );
   GFX->clear( GFXClearStencil | GFXClearZBuffer | GFXClearTarget, ColorI(255,255,255), 1.0f, 0 );

   // Calculate our standard light matrices
   MatrixF lightMatrix;
   calcLightMatrices( lightMatrix, diffuseState->getCameraFrustum() );
   lightMatrix.inverse();
   MatrixF lightViewProj = GFX->getProjectionMatrix() * lightMatrix;

   // TODO: This is just retrieving the near and far calculated
   // in calcLightMatrices... we should make that clear.
   F32 pnear, pfar;
   GFX->getFrustum( NULL, NULL, NULL, NULL, &pnear, &pfar, NULL );

   // Set our view up
   GFX->setWorldMatrix(lightMatrix);
   MatrixF toLightSpace = lightMatrix; // * invCurrentView;

   _calcSplitPos(fullFrustum);
   
   mWorldToLightProj = GFX->getProjectionMatrix() * toLightSpace;

   // Apply the PSSM 
   const F32 savedSmallestVisible = TSShapeInstance::smSmallestVisiblePixelSize;
   const F32 savedDetailAdjust = TSShapeInstance::smDetailAdjust;
   TSShapeInstance::smDetailAdjust *= smDetailAdjustScale;
   TSShapeInstance::smSmallestVisiblePixelSize = smSmallestVisiblePixelSize;