ec5e918ef4
In FIFO presentation mode we block either on our present-queue or on Present events after an image was transmitted. In case we receive completion events without idle events at some point we exhaust our acquire-queue and can not block anymore on present-queue. Ensure that the consumer has at least one image to acquire before blocking again on present-queue. Otherwise wait for one from the X server. CC: mesa-stable Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3344 Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Reviewed-by: Simon Ser <contact@emersion.fr> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6513>