MGS4 higher resolution rendering graphical corruption on RDNA3

[plsfixrito]

Quick summary

When using the following settings the skybox starts to flicker on MGS4 using AMD Vulkan driver.

settings that the issue occurs with:
GPU menu

• Renderer Vulkan
• Scaling 300% (any value beyond 200% will have the issue)

All other settings are default except those recommended on the WIKI.

Details

The issue does appear when using AMD CPU+GPU and using Vulkan as renderer, but it is not present when using AMD CPU+GPU with OpenGL. Also the issue is not present when using a laptop with intel/nvidia hardware using the same settings.

Attach a log file

METAL GEAR SOLID 4 GUNS OF THE PATRIOTS [NPUB31633].log.gz

Attach capture files for visual issues

Both RSX file and Renderdoc are too large to upload to github even after compressing.

System configuration

CPU AMD 7700X
GPU AMD 7900XTX

Other details

No response

[AniLeo]

rrc/rdc file can be uploaded elsewhere and linked here as a downloadable

[kd-11]

I suspect it's Z-buffer emulation crap. AMD does not expose 24-bit depth buffers which PS3 relies on.
Test what happens with "high precision Z buffer" option with OpenGL and see if the problem re-appears.

[plsfixrito]

rrc/rdc file can be uploaded elsewhere and linked here as a downloadable

I uploaded rrc to mega
https://mega.nz/file/1kJDGbyA#VlbCC7Fj5VOIOdR0bnnAEtDjLe7s___DOGd67wlZX4k

[plsfixrito]

I suspect it's Z-buffer emulation crap. AMD does not expose 24-bit depth buffers which PS3 relies on. Test what happens with "high precision Z buffer" option with OpenGL and see if the problem re-appears.

I used the option with OpenGL and 300% upscale the issue didn't appear.

[kd-11]

That means this is most likely the same issue as #14838 affecting RDNA3.

[grimmute]

I have finished BLES00246 last week on 5800X3D+6900XT using the latest drivers with Vulkan + 300% scaling. I haven't encountered this issue. It might indeed be an issue specific to RDNA3.

[asp0909]

I have the same problem! rx 7900 xtx! RDNA 3 specific problem... is there a solution expected?

[asp0909]

vulkan 7900 xtx adrenaline latest beta drivers 16/2/2024

[AniLeo]

Duplicate of #14838 where the main discussion took place.

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Closing as fixed by AMD.

Added this to the documentation at https://github.com/RPCS3/rpcs3/wiki/Graphics-Driver-Issues for historical purposes.