On Sat, 2002-04-20 at 20:26, Mark Vojkovich wrote: > On 20 Apr 2002, Michel D�nzer wrote: > > > On Fri, 2002-04-12 at 02:23, Andrew P. Lentvorski wrote: > > > Okay, after tracking this, it turns out to be a pixmap cache bug. At > > > least, I can stop the problem from occurring by adding the "Option > > > "XaaNoPixmapCache"" line to my XF86Config file. > > > > That's coincidence, the same is true for "XaaNoScreenToScreenCopy". > > > > The problem is that RADEONCPSetClippingRectangle() is called between > > RADEONSetupForScreenToScreenCopy() and > > RADEONSubsequentScreenToScreenCopy() and messes up the > > DP_GUI_MASTER_CNTL register. > > > > I don't see a proper solution to this problem so the attached patch just > > disables hardware clipping for screen to screen copies. I wonder what > > impact on performance this has, if any - Mark? > > Hard to say. In some hardware implementations, hardware clipping > is slower and it's fastest to clip in software. It depends on how well > the hardware optimizes away the unrendered pixels.
Can you recommend any benchmarks? -- Earthling Michel D�nzer (MrCooper)/ Debian GNU/Linux (powerpc) developer XFree86 and DRI project member / CS student, Free Software enthusiast _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
