Method Render

trinity/Tr2PrimitiveScene.cpp:50–113

-------------------------------------------------------------------------------------- Description: Implements ITr2Scene::Render. Renders a list of primitive sets. --------------------------------------------------------------------------------------

//   Implements ITr2Scene::Render. Renders a list of primitive sets.
// --------------------------------------------------------------------------------------
void Tr2PrimitiveScene::Render( Tr2RenderContext& renderContext )
{
	std::vector<ITr2Renderable*> visibleRenderObjects;
	// We render everything since it is so cheap
	visibleRenderObjects.clear();
	for( PrimitiveIterator it = m_primitives.begin(); it != m_primitives.end(); ++it )
	{
		( *it )->UpdateTransform();
		visibleRenderObjects.push_back( ( *it ) );
	}

	if( m_manipulator != NULL )
	{
		m_manipulator->Update();
		std::vector<ITr2Renderable*> manipPrims = m_manipulator->GetPrimitivesToRender();
		for( RenderableIterator it = manipPrims.begin(); it != manipPrims.end(); ++it )
		{
			visibleRenderObjects.push_back( ( *it ) );
		}
	}

	// Sort the list before we render since the primitives might not write to z
	Tr2RenderableSortList sortList;
	for( RenderableIterator it = visibleRenderObjects.begin(); it != visibleRenderObjects.end(); ++it )
	{
		ITr2RenderableEntry entry;
		entry.m_object = ( *it );
		entry.m_distance = ( *it )->GetSortValue();
		sortList.push_back( entry );
	}
	std::sort( sortList.begin(), sortList.end() );
	// sort the primitives back to front
	std::reverse( sortList.begin(), sortList.end() );

	SetupPerFrameData( renderContext );
	renderContext.m_esm.BeginManagedRendering();

	for( Tr2RenderableSortList::iterator it = sortList.begin();
		 it != sortList.end();
		 ++it )
	{
		ITr2RenderablePtr obj = ( *it ).m_object;
		Tr2PerObjectData* perObject = obj->GetPerObjectData( m_opaqueBatches );
		obj->GetBatches( m_opaqueBatches, TRIBATCHTYPE_OPAQUE, perObject );
	}

	m_opaqueBatches->Finalize();

	renderContext.m_esm.SetInvertedDepthTest( true );
	renderContext.m_esm.ApplyStandardStates( Tr2EffectStateManager::RM_OPAQUE );
	renderContext.RenderBatches( m_opaqueBatches );
	renderContext.m_esm.SetInvertedDepthTest( false );

	m_opaqueBatches->Clear();
	m_allocator->Clear();

	renderContext.m_esm.EndManagedRendering();