On Mon, 2007-09-24 at 21:51 -0400, Jonathan Bastien-Filiatrault wrote: > > I have made a program that draws zfail/zpass shadows. I draw three > models with ~120 tris each and one light source and a simple floor, with > zpass. I can get a full 60fps until the window size reaches about > 780x580 which drops to around ~30 fps in a maximized window (1342x820). > The application is far from cpu-bound and vsync is disabled. > > > I was wondering if I am really hitting the 945GM fill rate limit, or I > am doing something terribly costly someway along the way (this should > not be the case, it is somewhat too simple). I have tried with the > latest i915 in Debian and the latest i915tex from git (right after it > got renamed to i915). The newer driver gives a steady ~20 fps, any > window size, for my program and ~60 fps for glxgears. > > > The render is divided into three passes: ambient, shadow volumes(front > and back), "illuminate", nothing remarkable. I use VBOs, the performance > is about the same as vertex arrays (added vbo support for the heck of it > today).
I'm not sure, but it sounds like this is something the software zone rendering on the i915tex-zone-rendering branch might help for. You'll need to set the environment variable INTEL_SWZ=1 to make it use software zone rendering. -- Earthling Michel Dänzer | http://tungstengraphics.com Libre software enthusiast | Debian, X and DRI developer ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
