<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [945GM] video tearing in mpv (xf86-video-intel-2.99.906)" href="https://bugs.freedesktop.org/show_bug.cgi?id=72290#c13">Comment # 13</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [945GM] video tearing in mpv (xf86-video-intel-2.99.906)" href="https://bugs.freedesktop.org/show_bug.cgi?id=72290">bug 72290</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>TearFree is a driver option to redirect rendering onto a backbuffer and pageflip, like a compositing manager. VSync is the mechanism the driver uses to prevent the GPU from rendering onto the frontbuffer whilst the display is scanning out from the target area - it prevents tearing within a window. For a fullscreen swapbuffer, we would use a pageflip instead. Hmm, actually if the application is too slow and misses its requested frame, the driver applies "Adapative VSync" and blits the update onto the scanout unsynchronised to the vertical refresh (in order to allow the application to catch up with its timeline).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>