GTA IV - Rendering issues on AMD and Intel

[NorbertHarangozo]

Software information

GTA IV at max settings

System information

• GPU: RX 580 4GB and UHD 620
• Driver: AMDVLK 2019.Q2.2, RADV Git and ANV 19.0.3
• Wine version: Proton 4.2-3
• D9VK version: da39227

GTA IV has artifacting issues on AMD and Intel as well. On RADV and ANV the car textures aren't rendered correctly, AMDVLK doesn't have this problem. On Intel, there are even more issues.

AMDVLK:


https://www.youtube.com/watch?v=2EukzCABdhA

RADV:


https://www.youtube.com/watch?v=P1d1mlIO8Z8

Intel:


https://www.youtube.com/watch?v=EIQZd-_AFks

Apitrace file(s)

• https://mega.nz/#!DEFnDQLI!G0fkUFzyZSvxbImQbB8xsSFNTX4bt_IWPoOXfbUalG8
  For some reason, most of the artifacting visible in the screenshots and the videos above, are not visible when replaying the trace.

Log files

• d3d9.log (AMDVLK): GTAIV_d3d9_amdvlk.log
• d3d9.log (RADV): GTAIV_d3d9_radv.log
• d3d9.log (Intel): GTAIV_d3d9_intel.log

[misyltoad]

Game seems to render fine on NVidia.

I ran a spirv-val on the shaders and everything seems to be OK -- I checked the shaders and didn't see anything too crazy it was doing.

Need to compile a new version of regular vk val layers to check those (current SDK is completely broken.)

[misyltoad]

This should be fixed (well, worked around) by the d3d9-hazards branch.

[QmwJlHuSg9pa]

The d3d9-hazards workaround fixed the issue for me, though at the expense of a framerate drop.

I tested the same scene several times, casually observing a drop from 85-110 fps (0.12 release; similar performance to native D3D9) down to 70-85 (d3d9-hazards)

Machine:

• Windows 10 1809
• Radeon RX 580
• Ryzen 2600X

[K0bin]

Unfortunately that has to be expected which is why it's a separate branch for now.

We're still looking for a better way to fix it but it's a very tricky problem.

[neVERberleRfellerER]

I found that when I retrace #164 I see the very same corruption as with trace from here, but OP in second issue seemingly does not see any colorful corruption (it's not visible in screenshots). The difference is that OP in second thread is on Vega 11, and I am on POLARIS10. hasHazards=true helps in both cases. Is this expected?

[misyltoad]

This should be fixed in master? Can you try it?
Performance should also be OK.

[QmwJlHuSg9pa]

Tested with 0fd76277. Looks just like native D3D9 as far as I can tell. Performance is comparable, too. There's moments where it'll drop from ~110 down to ~65 but I think that's just an underlying limitation of the game engine.

Cheers!