Created attachment 125035 [details]
artifacts in The Talos Principle
When I enable MSAA (x2, x4 or x8) in the Unigine Heaven or in The Talos Principle (I haven't tried other games yet) I get graphical artifacts. You can see them on the attached screenshots.
GPU: AMD RX480
OS: Fedora 25
Mesa version: git b479c47
LLVM version: svn 275001
Kernel version: 4.7.0-rc6
linux-firmware: git a141500
Created attachment 125036 [details]
Artifacts in Unigine Heaven
Created attachment 125037 [details]
Created attachment 125038 [details]
Hi Andrey, thanks for the report.
I just tried Unigine Heaven with x8 on Tonga, and see no such problems. I'm also fairly certain that I tried MSAA in Heaven on Polaris10 and so no such problems, but I'll re-try when I get the change. I'll keep you posted.
Sorry, forgot to mention: could you provide an apitrace of The Talos Principle that shows the artifacts on your system? Upload e.g. to Google Drive since it's going to be fairly large.
Never mind, I see them in Unigine Heaven on Polaris10 as well. Must be a recent regression.
The apitrace of The Talos Principle: https://drive.google.com/open?id=0BzMT1H8Zl-hEeXBhSUxqQkM1dEk. Just in case.
The patch at https://patchwork.freedesktop.org/patch/99101/ fixes the problem for me.
I confirm. The patch fixes the problem for me as well.
Mesa master commit f755da0f2f8609e603b50424aa254358eb72fa25
on Jan 16, 2017 at 17:15:40.
(provided by the Example extension).