Fetch4 - Important?

[Xmas]

Err, sure. But the ALU load does go up. The more TMUs you have to feed, the more you need texture compression. But I'd argue that the TMU/bandwidth ratio has been pretty constant for years.

 

[Unknown Soldier]

It's coming up to 2 years since 3Dc appeared. Any signs of it being used in PC games?

Serious Sam used it. Not sure of SS2 though. Though that's the only game I know that uses the tech.

US

 

[wishiknew]

Is there anyway ATI can expose a df24 or fetch4 hack for the r520?

Me sense developers would rather not support the r520 in some graphical
feature than code a work around just for it.

 

[Xmas]

Is there anyway ATI can expose a df24 or fetch4 hack for the r520?

Me sense developers would rather not support the r520 in some graphical
feature than code a work around just for it.

If it's not there, it's not there. Any fetch4 "emulation" will be far less efficient than the game itself taking 4 point samples instead.

However, since there are lots of older ATI cards (and some XGI and Intel graphics ) around, devs have to write a fallback "standard" shadowmap path anyway.