On Mon, Dec 11, 2000 at 09:03:37AM +0100, Svante Signell wrote: Content-Description: message body text > Content-Type: text/plain; charset=us-ascii > Content-Description: message body text > Content-Transfer-Encoding: 7bit > > Hello, can somebody please enlighten me on why DRI is so terribly > slow, eg gears run at 60-70 fps (> 500 is expected). glxinfo report > direct rendering and all seems OK according to the XFree86.0.log file > (attached). The swapbuffers procedure is tied to the vertical refresh on the glide cards (tdfx DRI driver included). This will limit your effective frame rate to 70fps. You can disable this with an environment variable. $ export FX_GLIDE_SWAPINTERVAL=0 $ gears You should get ~600fps in the Mesa gears demo, given your hardware. > OS: MDK 7.2 + parts from mandrake-devel (eg XFree86-4.0.1h) > Computer: Compaq 5640/5670, 450 MHZ, 64MB RAM. > Video card: Voodoo Banshee > Note: the number of BIOS functions in this computer is _very_ > limited. For example, there is no option to enable an IRQ for the > video card :( Workarounds? PCI allows IRQ sharing. Don't worry about it. -- Sydney 2000 - The Best Olympic Games Ever
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