Call of Cthulu (399810)

[Ceystyle]

Compatibility Report

• Name of the game with compatibility issues: Call of Cthulu
• Steam AppID of the game: 399810

System Information

• GPU: AMD AMD Radeon RX 5500 XT (radeonsi, navi14, LLVM 17.0.6, DRM 3.54, 6.6.9-amd64)
• Video driver version: 4.6 (Compatibility Profile) Mesa 23.3.3-1
• Kernel version: 6.6.9-amd64
• Link to full system information report as Gist: https://gist.github.com/Ceystyle/44a1ee2e70942ac4f510d53b03a7428d
• Proton version: Proton Experimental

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

steam-399810.log

Symptoms

The game menu screen and video sequences are broken with Proton Experimental in Call of Cthulu. Everything works fine with Proton 8.0-4.

Game menu in Proton Experimental:

Game menu in Proton 8.0-4:

The same happens in the first video sequence after starting a new game.

First video sequence in Proton Experimental:

First video sequence in Proton 8.0-4:

It looks like as if the right side of the screen is somehow mirrored to the left and the other half is constantly flickering.

[Ceystyle]

The issue also does not appear with Proton-8.0-5-rc3.

[Ceystyle]

I did a regression test and the result was:

4e2d1f1d2ed6e57de9103c0fd43bce88e3ad4792 is the first bad commit commit 4e2d1f1d2ed6e57de9103c0fd43bce88e3ad4792 Author: Zebediah Figura zfigura@codeweavers.com Date: Fri Jun 2 16:37:42 2023 +0200

winegstreamer: Set the MF_MT_DEFAULT_STRIDE attribute in mf_media_type_from_wg_format().

Unfortunately, this commit does not cleanly revert on top of current HEAD. But the previous commit afd17dcfb40a136eedb26aacde6625cf654d265 does not show this issue.

[alasky17]

@Ceystyle Thank you for the bisect! We are looking into the regression and hopefully will find a fix soon :)

[Ceystyle]

Unfortunately Proton 9.0 (beta) shows this bug, too.

[alasky17]

@Ceystyle Indeed :( Unfortunately the bug is somewhat "inherent" in the way video playback works on proton-stable. There is an alternative in Proton - Experimental - hopefully the video playback is fixed for you there? There is a fix in experimental-bleeding-edge that solves all known video playback issues with this game in our testing so far.

[Ceystyle]

@alasky17 Thanks for the update. The video playback is indeed fixed in Proton Experimental bleeding-edge.