On Tue, Oct 30, 2012 at 10:43 AM, Tzvetan Mikov <tmi...@jupiter.com> wrote: > On 10/30/2012 07:12 AM, Patrick Baggett wrote: >> Is your screen refresh rate 70 Hz? Because if so, that means that it's >> syncing to the vblank on Mesa, and not doing so on the proprietary one. > > Unfortunately no. In fact the Gallium EGL/R600 doesn't support flip on > vsync at all - eglSwapInterval is always 0. The output is a standard > 60Hz LCD, plus I do get different, (but still low in absolute terms) > frame rates with different chips. Off the top of my head: > - HD5430 - 120 FPS > - HD6450 - 140 FPS > - HD6460 - 70 FPS > - HD6750 - 400 FPS > - HD6760 - 240 FPS > > I do think there is something fishy with the page flip though, which I > am planning to investigate today. It is way too slow - a render loop > which does nothing but a eglSwapBuffers() (no actual rendering > whatsoever) runs at only 350 FPS. It should be either 60FPS, or thousands. > > regards, > Tzvetan >
So tested, it's something inside egl that lead to this, same program as yours with glut on X11 with 2d tiling enabled and 2d color tiling have a slight advantage 140fps vs 137fps (windowed so there is a blit which would account for a hugue chunk of perf diff with fglrx). However using egl i got 70fps with color tiling and 74fps without. So something in egl is slowing things down. Cheers, Jerome _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
