Graphic glitches with stream output support on GCN 1.0

[Ahmed-E-86]

Software information

The Witcher 3 - Medium settings - 720P resolution

System information

• GPU: AMD HD 8750M
• Driver: Mesa 18.3 with the RADV patches for VK_EXT_transform_feedback
  https://aur.archlinux.org/packages/mesa-transform-feedback-git
• Wine version: esync-staging-pba-3.18
• DXVK version: 0.90

I couldn't see this monster before (Ekhidna), but now it is appearing with graphic glitches.

Log files

witcher3_d3d11.log
witcher3_dxgi.log

[doitsujin]

Works fine on my RX 480, must be specific to your GPU.

[Ahmed-E-86]

Thanks. They said that it will be fixed in the next release.

https://bugs.freedesktop.org/show_bug.cgi?id=108508#

[chelobaka]

RADV support of GCN 1.0 HW is in poor state itself. I tried Batman: Arkham Origins on HD7750 1GB card: the performance was suboptimal, after some time I started to get missing textures and finally the game hang. Natively this game runs fine on this HW.

[Ahmed-E-86]

I didn't try Batman Arkham Origins on Linux, but I played Batman Arkham Knight, and it works without any issues.

[chelobaka]

It was Mesa 18.1.x and LLVM 6.0 at my side so maybe it's OK nowadays.

[Ahmed-E-86]

When I use Wine without DXVK the objects render correctly but the textures is darker than it should be. The same happens with Mafia III. Could you explain that, please? @doitsujin

[doitsujin]

No, I actually can't, since both DXVK and wined3d render Witcher 3 correctly on my machine.

[Ahmed-E-86]

I guess my graphic card doesn't work well with Vulkan, and needs alot of improvements that may or may not happen in the future. Too bad for me :/

[Ahmed-E-86]

@doitsujin Guess what?!

I updated the kernel to v. 4.19 and The Witcher 3 is working perfectly now!

Manjaro uses kernel v. 4.14 BTW.