🔒 Locked

Anti Aliasing

Started by Ruudje Nov 28, 2003 at 8:23 AM 6 replies 1.3k views

Original Post

Nov 28, 2003 at 8:23 AM

Ive tried to implement the AA from the nehe tutorial 46. I got it to work... but dont understand the following: When I run my program, it uses the AA no matter what. Im supposed to call glEnable(GL_MULTISAMPLE_ARB); to enable it, but it works even without that. If I disable it before rendering my models it doesnt change. Ive tried to run the demo on 2 other pc''s. One didnt get any AA, and the other one only a little, but again, without really enabling it. first question: whats up with that? second q: can I set the amount of AA somehow? My vid card does 6x fine (600+ fps) but the same demo on another pc, with a ATI wonder does it with 2x or 4x (doesnt support higher) with only about 5 fps

Daaark

Nov 28, 2003 at 8:46 AM

Check your video card settings. I know on the nvidia settings you can force allot of things regardless of what the program wants. Could be you have your card set to always have AA on. The options are something like:

Always Off
Let the application decide
Always 2x
Always 4x
etc..

Ruudje

Nov 28, 2003 at 8:59 AM

i know that, but all 3 pc''s had this option set to letting the computer decide

Ruudje

Nov 30, 2003 at 8:46 AM

i still havent been able to fix this... If I call glDisable(GL_MULTISAMPLE_ARB); I get fsaa anyway... its always on

Jockel

Nov 30, 2003 at 10:48 AM

I cannot help you with your problem but why don''t you just drop Colt (the author of the tutorial) a line?
I had a question and he answered me pretty quickly and was very helpful.

_the_phantom_

Nov 30, 2003 at 10:55 AM

quote:
Original post by Ruudje
i still havent been able to fix this... If I call glDisable(GL_MULTISAMPLE_ARB); I get fsaa anyway... its always on

iirc there is a problem with ATI''s FSAA implimentation which stops it from being disabled after its enabled.

Ruudje

Nov 30, 2003 at 11:56 AM

hmm that might explain alot... since i have ati. but by default the fsaa is enabled after creating...

Topic Locked

This topic has been locked by a moderator. New replies are not allowed.