Method prepRenderImage

Engine/source/T3D/fx/groundCover.cpp:1562–1737

}

void GroundCover::prepRenderImage( SceneRenderState *state )
{
   // Reset stats each time we hit the diffuse pass.
   if (mMaterialInst == nullptr)
      return;

   if( state->isDiffusePass() )
   {
      smStatRenderedCells = 0;
      smStatRenderedBillboards = 0;
      smStatRenderedBatches = 0;
      smStatRenderedShapes = 0;
   }

   // TODO: Make sure that the ground cover stops rendering
   // if you're inside a zoned interior.

   if ( state->isReflectPass() && mReflectRadiusScale <= 0.0f )
      return;

   // Nothing to do if this is a shadow pass and shapes in this GoundCover
   // should not be casting shadows.

   if( state->isShadowPass() && !mShapesCastShadows )
      return;

   GFXTransformSaver saver;

   // Setup the frustum culler.
   if ( ( mCuller.getPosition().isZero() || !mDebugLockFrustum ) && !state->isShadowPass() )
      mCuller = state->getCullingFrustum();

   // Update the cells, but only during the diffuse pass. 
   // We don't want cell generation to thrash when the reflection camera 
   // position doesn't match the diffuse camera!
   if ( state->isDiffusePass() )
      _updateCoverGrid( mCuller );

   // Render billboards but not into shadow passes.

   if ( !state->isShadowPass() && mMaterialInst->isValid() && !mDebugNoBillboards )
   {
      PROFILE_SCOPE( GroundCover_RenderBillboards );

      // Take zoom into account.
      F32 screenScale = state->getWorldToScreenScale().y / state->getViewport().extent.y;

      // Set the far distance for billboards.
	  F32 radius = mRadius * smFadeScale;
      mCuller.setFarDist(radius * screenScale );

      F32 cullScale = 1.0f;
      if ( state->isReflectPass() )
         cullScale = mReflectRadiusScale;
      
      // Setup our shader const data.
      // Must be done prior to submitting our render instance.