Method prepRenderImage

Engine/source/T3D/examples/renderMeshExample.cpp:265–350

}

void RenderMeshExample::prepRenderImage( SceneRenderState *state )
{
   // Do a little prep work if needed
   if ( mVertexBuffer.isNull() )
      createGeometry();

   // If we have no material then skip out.
   if ( !mMaterialInst || !state)
      return;

   // If we don't have a material instance after the override then 
   // we can skip rendering all together.
   BaseMatInstance *matInst = state->getOverrideMaterial( mMaterialInst );
   if ( !matInst )
      return;

   // Get a handy pointer to our RenderPassmanager
   RenderPassManager *renderPass = state->getRenderPass();

   // Allocate an MeshRenderInst so that we can submit it to the RenderPassManager
   MeshRenderInst *ri = renderPass->allocInst<MeshRenderInst>();

   // Set our RenderInst as a standard mesh render
   ri->type = RenderPassManager::RIT_Mesh;

   //If our material has transparency set on this will redirect it to proper render bin
   if ( matInst->getMaterial()->isTranslucent() )
   {
      ri->type = RenderPassManager::RIT_Translucent;
      ri->translucentSort = true;
   }

   // Calculate our sorting point
   if ( state )
   {
      // Calculate our sort point manually.
      const Box3F& rBox = getRenderWorldBox();
      ri->sortDistSq = rBox.getSqDistanceToPoint( state->getCameraPosition() );      
   } 
   else 
      ri->sortDistSq = 0.0f;

   // Set up our transforms
   MatrixF objectToWorld = getRenderTransform();
   objectToWorld.scale( getScale() );

   ri->objectToWorld = renderPass->allocUniqueXform( objectToWorld );
   ri->worldToCamera = renderPass->allocSharedXform(RenderPassManager::View);
   ri->projection    = renderPass->allocSharedXform(RenderPassManager::Projection);

	// If our material needs lights then fill the RIs 
   // light vector with the best lights.
   if ( matInst->isForwardLit() )
   {
      LightQuery query;
      query.init( getWorldSphere() );
		query.getLights( ri->lights, 8 );
   }