c3af4c1b15
glGetIntegerv() with GL_RED_BITS/GL_GREEN_BITS/GL_BLUE_BITS/etc. is not supported with the GL core context, so there is no point in falling back to that without supporting COGL_PRIVATE_FEATURE_QUERY_FRAMEBUFFER_BITS, as this will cause an GL error. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3047>