On 05/05/2008, Doug Larrick <doug at parkercat.org> wrote: > You can use DRM's drm_wait_vblank ioctl, or OpenGL's GLX_SGI_video_sync > extension, to wait for vblank. Neither of these work on all hardware. Do any of those work if you're using X protocol requests? I don't think so since the server is ultimately who decides when to draw. Rui