[forum] FW: XFree86 future

[James Arthur]

On Wednesday 26 March 2003 23:24, Marco Bubke wrote:
> There are texture, vertex etc. objects. It can be cached on the card so
> there is no traffic. All modern games use this way. Because of that AGP
> 8x isn't faster as AGP 4x.

That's not strictly true. On a very basic level maybe, but if this was true 
we'd still only have AGP 1x, and not AGP 8x.

You need to push and pull texture data through the bus in real time because 
64/128/256MB of texture cache isn't enough. Not to mention the fact that 
you've only got eight lights to play with, and if you want more you have to 
keep turning them on and off several times a scene, and similar problems. You 
can never have enough memory, and you can never have enough bandwidth.

> You can render to textures so that overlaping is nop problem.

Oh yeah, rendering to textures. That's another way to flood the AGP bus.

--jaa