cabc08a184
so that user buffers are uploaded without syncing. Now glthread fully handles non-VBO uploads, so that we can disable user buffer codepaths in st/mesa. Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20624>