Don't use two different variables to refer to mSnapshot.

        mSnapshot->transform->mapRect(bounds);

        // Layers only make sense if they are in the framebuffer's bounds

        bounds.intersect(*mSnapshot->clipRect);

        bounds.intersect(*snapshot->clipRect);

        // When the layer is not an FBO, we may use glCopyTexImage so we

        // need to make sure the layer does not extend outside the bounds