ATI's DX11 tessellation to be aided by the shader core?
- Thread starter MistaPi
- Start date
You mean EATM, don't you? EATM was really cool and damn fast.Alpha to coverage looked great, ran fast. I don't understand at all why the fuck it was removed and replaced with something that's just total crap that simply can't be used. Forget Crysis... The GPU would have a coronary infarction just thinking about it.
The AF isn't crappy, it's optimised.
Actually it's slower: HD5000 needs three cycles to generate a tessellated triangle, Xenos two cycles.
But isn't the HD5000 clocked higher and has more units, so net effect is it's faster?
If you implement Xenos style tessellation HD5000 and 4000 are actually slightly more efficient clock for clock due to some changes around the tessellator. This is part of why the HD4000 series claimed improved tessellation. The other part was GS support. DX11 tessellation is different.
I suppose I do, I don't know the exact term for it, but the actual result of the technique looked just like Humus' ancient alpha-to-coverage DX9 demo to my eyes. It might have had a slight performance hit I'm not sure, but it was basically nothing worth complaining about, particulary compared to the two supersampling offerings currently in the drivers - one of which barely gives any improvement at all at a big performance sock in the jaw, and the other a slight improvement at a horrific knock-out punch... Terrible!
Well, it sure is something, that's for sure!The AF isn't crappy, it's optimised.
I'm very impressed with the 5000 series' AF tho, I wish I could warrant splurging for one of those cards, but not this late in the product's life cycle. I'll wait and see for what they have in store for the 6000 (guessing) series, betting my money on that they don't screw up the AF again, heh.
Hopefully there'll be a lot more tesselation oomph in those chips, and maybe they'll even hit the market as some software starts using tesselation in a meaningful way, who knows?
...Perhaps the 6870 will also finally be able to run Crysis at playable fps with antialias turned on, lal...
Debatable. I suppose eventually it will catch up to the r8x0, but will that happen during its lifespan? At the moment, it doesn't appear so.
Given the DX11 marketshare and the number of Evergreens in developers hands....
Redwood, Juniper and Cypress have the same per-clock geometry performance (setup and tessellation). Cedar is lower.