4496 and glxGetVideoSyncSGI

vrtainment · 07-30-03, 09:26 AM

Hi,

till now I have been using the following hack in an application to achieve best possible v-syncing
export __GL_VSYNC_TO_BLANK=0
in app I was calling glXGetVideoSyncSGI(&nCounter); before call to glXSwapbuffers. This constellation did a great job in getting smooth motion in full-field motions inside a heavily textured cylinder ...
Now, after installing 4496 the application gets stalled when calling glXGetVideoSync
Any idea how to bypass this? using export __GL_VSYNC_TO_BLANK=1 does not do the job at the same quality which I had before ...

hartwig

SUnterholzner · 09-01-03, 03:19 PM

Hi!

I just ran into the same problem that my application stalls whenever 'glXGetVideoSyncSGI' is called. Have you already found a solution to this problem.

Stefan

vrtainment · 09-01-03, 03:32 PM

Hi Stefan,

I found no solution so far. What I did is to remove the call to glxGetVideoSyncSGI and activated export __GL_SYNC_TO_VBLANK=1
This is working reasonable well with the latest driver on the FX 5900 (guess might do on any FX), however for "older" nvidia cards using the latest driver I found no solution, since any motion given the above solution is jerky ... For Ti4800 based or less I reverted to previous version of driver ...

hartwig

07-30-03, 09:26 AM	#1
vrtainment Registered User Join Date: Mar 2003 Location: Berlin, Germany Posts: 17	4496 and glxGetVideoSyncSGI Hi, till now I have been using the following hack in an application to achieve best possible v-syncing export __GL_VSYNC_TO_BLANK=0 in app I was calling glXGetVideoSyncSGI(&nCounter); before call to glXSwapbuffers. This constellation did a great job in getting smooth motion in full-field motions inside a heavily textured cylinder ... Now, after installing 4496 the application gets stalled when calling glXGetVideoSync Any idea how to bypass this? using export __GL_VSYNC_TO_BLANK=1 does not do the job at the same quality which I had before ... hartwig

09-01-03, 03:19 PM	#2
SUnterholzner Registered User Join Date: Sep 2003 Posts: 1	4496 and glxGetVideoSyncSGI Hi! I just ran into the same problem that my application stalls whenever 'glXGetVideoSyncSGI' is called. Have you already found a solution to this problem. Stefan

09-01-03, 03:32 PM	#3
vrtainment Registered User Join Date: Mar 2003 Location: Berlin, Germany Posts: 17	Hi Stefan, I found no solution so far. What I did is to remove the call to glxGetVideoSyncSGI and activated export __GL_SYNC_TO_VBLANK=1 This is working reasonable well with the latest driver on the FX 5900 (guess might do on any FX), however for "older" nvidia cards using the latest driver I found no solution, since any motion given the above solution is jerky ... For Ti4800 based or less I reverted to previous version of driver ... hartwig