void AddTriangleRenderItem ( const [FCanvasUVTri](API\Runtime\Engine\Engine\FCanvasUVTri) & Tri, const [FMaterialRenderProxy](API\Runtime\Engine\Materials\FMaterialRenderProxy) * MaterialRenderProxy, [FHitProxyId](API\Runtime\Engine\FHitProxyId) HitProxyId, bool bFreezeTime )