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Mete Ciragan
09-12-2000, 12:02 AM
Hello,

is there a way to detect, if current hardware supports full-scene-antialiasing in hardware?

I've searched around a bit and found something about the GL_ARB_multisample extension. Is this the correct way?

Thanks and greetings,
Mete Ciragan

Bob
09-12-2000, 03:02 AM
No, there is no general way to detect hardware capabilities. This applies to ALL kind of functionality. You are always guarateed to have a certain feature, but you don't know wether it's hardware or software.

foobar
09-12-2000, 09:30 AM
Well, the hardware FSAA that is used by some cards is nothing to do with openGL it is part of the backend of the video hardware: you get what you are given and if it works it works.

I think 3Dfx uses a video scan-out trick like the PlayStation2 -3Dfx must have some better tricks because PS2's AA is crap- so you couldn't control it with a software API. As a consequence the AA on consumer boards is unrelated to any extensions or AA techniques you might use in openGL.