On Fri, Mar 11, 2005 at 11:09:07AM -0500, John wrote: > On (11/03/05 10:47), John M Flinchbaugh wrote: > > I'm running Debian unstable (with XFree86) on a ThinkPad R40. > > With my Radeon 7500, if I run the flipflop screensaver normally (with > > acceleration): > > /usr/lib/xscreensaver/flipflop > > the little tiles don't have the nice shadows on the edges which give it > > a nice 3D look, but it does run nice and fast (42fps by its own count). > > If i run it as: > > LIBGL_ALWAYS_INDIRECT=true /usr/lib/xscreensaver/flipflop > > the rendering is much nicer with the proper shadows on the edges, so > > they look rectangular. The framerate is only 35fps then, and CPU usage > > greatly increases (since I guess it's software rendering). > > > > Am I missing something in my XFree86 config to let the accelerated 3D > You might consider this: > <snip> > Section "Device" > Identifier "ATI Radeon 7500" > Driver "radeon" > VideoRam 32768 > Option "Accel" "on" > Option "AGPMode" "4" > Option "AGPFastWrite" "on" > Option "EnablePageFlip""on" > Option "HWCursor" "on" > Option "DDCMode" "on" > Option "UseFBDev" "on" > Option "BusType" "AGP" > EndSection > me:~$ glxgears > 7418 frames in 5.0 seconds = 1483.600 FPS I tried these settings, but they did nothing for the rendering. I see similar performance in glxgears (1100fps). The seemingly slow FPS from flipflop takes into account a functional delay to make it look nice. the LIBGL_ALWAYS_INDIRECT really affects the FPS of glxgears. Generally, I don't have a performance problem with acceleration. It's just that the rendering is not of the quality I see with software rendering. It looks like shading is not happening at all in flipflop screensaver. -- John M Flinchbaugh john@hjsoft.com
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