View Single Post
Old 01-11-04, 11:31 AM   #53
utiel
Registered User
 
Join Date: Aug 2002
Location: mallorca
Posts: 65
Default Re: 5328 on GF4 Ti 4400 and kernel 2.4.24

Quote:
Originally posted by acrux
with this new driver i've seen in OpenGL applications my FPS go down... i'm returned to 44.96 release.

greetz,

Acrux
I have found that new drivers have VSYNC enabled.
If your monitor have 75hz of VSYNC, you only get 75 fps in "glxgears -fps"

Try This:
Code:
export __GL_SYNC_TO_VBLANK=0
bash-2.05b$ export __GL_SYNC_TO_VBLANK=0
bash-2.05b$ glxgears -fps
1410 frames in 5.0 seconds = 282.000 FPS
1407 frames in 5.0 seconds = 281.400 FPS

.... Now, without setting __GL_SYNC_TO_VBLANK

bash-2.05b$ unset __GL_SYNC_TO_VBLANK
bash-2.05b$ glxgears -fps
319 frames in 5.0 seconds = 63.800 FPS
370 frames in 5.0 seconds = 74.000 FPS
373 frames in 5.0 seconds = 74.600 FPS
327 frames in 5.0 seconds = 65.400 FPS
-------------------

You can put your new environment variable in your .bashrc file or /etc/profile and it will work when you restart your machine
utiel is offline   Reply With Quote