yeah, i know, 'cause that's exactly what i said..
anyway, yours is really theoratical, thus not containing the practical use --> think hereof:
Quote:So if you have 2 chips that render 20fps each, u get a total of 40fps.
wrong in practise! let's say, one picture, rendered by the 1
st chip shows a detailed image of an explosion. that could take its time to be rendered. so the second chip has to wait...sure, it can render the 2
nd picture already, but can't send it to the ramdac before the 1
st chip has send his picture. another thing is, sometimes you got framedrops (frames already rendered but not of use anymore as the required scene has changed too fast).
that doesn't matter with scanline procedures: both chips work together to put the 1
st picture on the screen and then work together on the 2
nd one. you see, 2 chips render a picture faster the only one chip, but 2 chips rendering each another picture brings nearly no advantages..thought 3dfx's method brings 166% while xgi's must deliver about 125-133% of one chip's power
yet, i'm sure ati & xgi would like to use scanlines but quantum3d won't be so stupid