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Shag
01-28-2002, 05:24 PM
I've just installed the 27.10 drivers on a GeForce 256 DDR. I wanted specifically to look at this extension. Is it not supported on older geForce cards?

Incidentally, has anyone else had problems installing these drivers? I know they're not official, so it's no big deal - but when I rebooted after the update the screen was 'stuck' on the W2K white loading screen, although the system worked fine! I could still run apps like Windows Explorer, and close the system down. It was almost as if the front and back buffers wouldn't swap!

SirKnight
01-28-2002, 06:27 PM
I think that new extension is for the geforce 3 only. I tried to use it on my geforce 256 w/ the 27.10 drivers and it wouldnt work. I also had problems w/ the drivers (but different than yours) but thats why they are beta and for testing only. http://www.opengl.org/discussion_boards/ubb/smile.gif

-SirKnight

Lev
01-29-2002, 01:59 AM
BTW what are the enumerants for the extension? The spec says "unfinished" http://www.opengl.org/discussion_boards/ubb/frown.gif anybody knows them?

Regards,
-Lev

Tom Nuydens
01-29-2002, 02:22 AM
GL_OCCLUSION_TEST_HP = 0x8165;
GL_OCCLUSION_TEST_RESULT_HP = 0x8166;

Now that you mention it, they aren't in the spec -- makes me wonder where I got them.

-- Tom

[This message has been edited by Tom Nuydens (edited 01-29-2002).]

barthold
01-29-2002, 08:32 AM
Originally posted by Tom Nuydens:
GL_OCCLUSION_TEST_HP = 0x8165;
GL_OCCLUSION_TEST_RESULT_HP = 0x8166;



These values are correct, and are the same values our Oxygen and Wildcat drivers use.

Barthold
3Dlabs

opla
02-04-2002, 01:43 AM
Is GL_HP_occlusion_test fast enought on GeForce3 ? Is it worth using it ?
I tried the Delphi Demo for occlusion, and
100-110 fps for a teapot and a ball doesn't look really fast...

PH
02-04-2002, 05:16 AM
It's very fast on GeForce3. There are so many uses for this extension that it's definitely worth it.

Tom Nuydens
02-04-2002, 07:02 AM
Originally posted by opla:
Is GL_HP_occlusion_test fast enought on GeForce3 ? Is it worth using it ?
I tried the Delphi Demo for occlusion, and
100-110 fps for a teapot and a ball doesn't look really fast...

... but what you overlooked is that the ball has 16000 triangles http://www.opengl.org/discussion_boards/ubb/smile.gif

I get about 110 fps when the ball is visible, and 155 when it's not. The occlusion test itself is by no means free, but I found that if you don't do it on objects with very small triangle counts (less than a few hundred), it's always a win.

-- Tom