<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BDW/SKL] FBC is not actually working after start gnome-sesstion desktop" href="https://bugs.freedesktop.org/show_bug.cgi?id=85123#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BDW/SKL] FBC is not actually working after start gnome-sesstion desktop" href="https://bugs.freedesktop.org/show_bug.cgi?id=85123">bug 85123</a> from <a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> Chris Wilson</a> <pre>gnome-shell will only render when there is damage (or it feels to the need to update its own display). It will stop rendering after a while, the only question is whether it quiesces enough for FBC to kick in. Note that without GLX_EXT_buffer_age (i.e. unpatched DRI2), gnome-shell uses DRI2CopyRegion to do its updates, and if you don't have TearFree enabled, that will just dirty small chunks of the framebuffer. Question to the audience: is it worth extending the pageflip ioctl to pass down the dirty rectangles?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>