Wine's Direct3D CSMT Support Isn't Yet Complete

[phoronix]

Phoronix: Wine's Direct3D CSMT Support Isn't Yet Complete

For those excited by yesterday's Wine 2.6 release with D3D CSMT as the long-awaited command-stream multi-threading to boost game performance, don't get your hopes too high with this release...

http://www.phoronix.com/scan.php?pag...T-Not-Yet-Full

[Sidicas]

Ffxiv benchmark
1090T with GTX470
Proprietary nvidia drivers

1920x1080
Standard Desktop Full screen


Wine 2.6 Stage
Score
2488

Windows Vista
Score
6824



Windows Vista gtx470 SLI + 23% GPU over clock + 25% CPU over clock
Score
6990

[shmerl]

Witcher 3 needs strict ordering, so CSMT helps it.

[Daktyl198]

Question: Is CSMT the same type of forced multi-threading that NVidia uses on their GPU drivers? The kind that actually loses performance with more cores/threads as we've been seeing on Ryzen? (that is, it scales up to about 3-4 threads then starts choking on itself).

[edoantonioco]

not a big problem since we can use wine stagging

[shmerl]

Question: Is CSMT the same type of forced multi-threading that NVidia uses on their GPU drivers? The kind that actually loses performance with more cores/threads as we've been seeing on Ryzen? (that is, it scales up to about 3-4 threads then starts choking on itself).

The idea is similar, but how well it scales is very implementation specific. So the only way to check if it scales on Ryzen is to test it. Same goes for Mesa threaded dispatch. Combining CSMT with any of these is probably a bad idea.

[GreatEmerald]

Witcher 3 needs strict ordering, so CSMT helps it.

Hm? Last I checked, Witcher 3 doesn't run on Wine.

[shmerl]

Hm? Last I checked, Witcher 3 doesn't run on Wine.

I guess you missed that it does for a while already. But there are still some shaders missing (especially outside, sunlit areas). Major improvements happened around Wine 2.3. I posted test results here. See here for more recent result.

Since 2.3, it didn't improve much.

[GreatEmerald]

I guess you missed that it does for a while already. But there are still some shaders missing (especially outside, sunlit areas). Major improvements happened around Wine 2.3. I posted test results here. See here for more recent result.

Since 2.3, it didn't improve much.

Hm, but that's with Staging rather than mainline Wine, looks like.

Still, impressive, I thought Wine was far away from working D3D11.

[shmerl]

Hm, but that's with Staging rather than mainline Wine, looks like.

Still, impressive, I thought Wine was far away from working D3D11.

With 2.6, just a couple of patchsets from staging are needed to run it.