ATI Radeon KMS vs. UMS With Ubuntu 10.04

[agd5f]

The radeon driver side for the pageflipping stuff has not been done yet.

[liam]

Any idea on a timeline?

The radeon driver side for the pageflipping stuff has not been done yet.

Also, do you know how the new page flipping control would deal with video? If you could point me to a resource that would be great since I've found precious little about what the scope of the pageflipping control is supposed to be.

Thanks,
Liam

[jery]

R700: unable to make UMS work on Lucid

hi,

I've upgraded to Ubuntu 10.04 this we. I gave a try to new oss radeon driver. As I understood, it uses kms by default, but ums is working faster (for the moment).
I tried some wine application, it started in kms mode, but was very laggy. So I tried in ums mode, and wine did not even start!! I don't have the error message here...
I also tried to upgrade to latest mesa with xorg-edgers ppa. It did not work better.

Did someone have the radeon oss working on some r700 card ?

[darkbasic]

As I understood, it uses kms by default, but ums is working faster (for the moment).

False, KMS is quicker with latest graphic stack (xorg-edgers ppa?)
RV670 Benchmark: KMS vs UMS vs KMS w/o vsync

[pingufunkybeat]

Which wine app?

Anything that requires FBOs won't work in UMS. Anything that requires OpenGL 2, basically.

The lagginess under Wine can have a number of causes (software fallbacks for OpenGL 2+, Wine not detecting the driver correctly and using only software), but keep in mind that the OSS drivers, while providing 3d acceleration that's decent, are not ultra-fast at this point.

[jery]

civ4... the only non opensource game I play
I kept Win XP for a long time for this game... and since 2 years I keep fglrx for this game too

[pingufunkybeat]

That's DirectX 9, which means it's likely that it uses some functionality which requires KMS.

UMS only goes up to OpenGL 1.5.

[jery]

So I guess, I'll keep fglrx for the next 6 months at least...
except if the xorg-edgers ppa is getting more stable.

[whizse]

civ4... the only non opensource game I play
I kept Win XP for a long time for this game... and since 2 years I keep fglrx for this game too

Looks like there might be somebody working on r300g with the specific intent on getting Civ4 working:

http://old.nabble.com/GSOC:-Gallium-R300-driver-td27950354.html

[suokko]

That's DirectX 9, which means it's likely that it uses some functionality which requires KMS.

UMS only goes up to OpenGL 1.5.

Civ4 has fixed function fall back (dx8 mode) too. That can run with GL 1.3 even.