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Re: Slow polygon anti-aliasing

<<I'm drawing just a handful of polygon offscreen with the software
renderer. With anti-aliasing off it can draw many times per second.
With anti-aliasing on it can take 10 seconds or so per frame, which is
unusable. Has this been improved in 1.2? If so, when will it be
generally available?>>

well, i would imagine it wouldn't be very easy (if possible at all) to do
fast anti-aliasing in hardware, but here's what i don't understand about
anti-aliasing in opengl - why couldn't you render a frame buffer twice the
size as your window, then call that portion of memory a texture, and then
draw it into your window as a big mipmapped texture, which would (i would
imagine) acheive the same effect? or maybe this is how it works? but it
seems like the hardware would be fast enough for that, at least for smaller
window sizes (320x240 or 480x360), and wouldn't make much of a speed
difference. i've noticed the dreamcast has some kind of anti-aliasing effect
(although it seems to partially from interlacing), and it doesn't seem to
have hardware that's that far beyond consumer 3d cards, plus it also has
(some kind of bizarre) motion blur. so why can't we do these things?? i'm
sure i'm just missing something obvious

-keenan crane
email@hidden



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