Your rendering API is not going to implement GI for you, and having it in a sample app is kind of misleading, that's not really the point. It's probably a mista

Your rendering API is not going to implement GI for you, and having it in a sample app is kind of misleading, that's not really the point. It's probably a mistake to include that as a sample scene as it creates the impression that it's trying to be a game engine. A few material spheres and test meshes would probably be a better example.