Method prepRenderImage

Engine/source/forest/forestRender.cpp:64–262

}

void Forest::prepRenderImage( SceneRenderState *state )
{
   PROFILE_SCOPE(Forest_RenderCells);

   // TODO: Fix stats.
   /*
   ForestCellVector &theCells = mData->getCells();
   smTotalCells += theCells.size();

   // Don't render if we don't have a grid!
   if ( theCells.empty() )
      return false;
   */

   // Prepare to render.
   GFXTransformSaver saver;

   // Figure out the grid range in the viewing area.
   const bool isReflectPass = state->isReflectPass();

   const F32 cullScale = isReflectPass ? mReflectionLodScalar : 1.0f;

   // If we need to update our cached 
   // zone state then do it now.
   if ( mZoningDirty )
   {
      mZoningDirty = false;

      Vector<ForestCell*> cells;
      mData->getCells(  &cells );
      for ( U32 i=0; i < cells.size(); i++ )
         cells[i]->_updateZoning( getSceneManager()->getZoneManager() );
   }

   // TODO: Move these into the TSForestItemData as something we
   // setup once and don't do per-instance.
   
   // Set up the TS render state.
   TSRenderState rdata;
   rdata.setSceneState( state );

   // Use origin sort on all forest elements as
   // its alot cheaper than the bounds sort.
   rdata.setOriginSort( true );

   // We may have some forward lit materials in
   // the forest, so pass down a LightQuery for it.
   LightQuery lightQuery;
   rdata.setLightQuery( &lightQuery );
   Frustum culler = state->getCullingFrustum();

   // Adjust the far distance if the cull scale has changed.
   if ( !mIsEqual( cullScale, 1.0f ) )
   {
      const F32 visFarDist = culler.getFarDist() * cullScale;
      culler.setFarDist( visFarDist );
   }