protonscr

GUG Demo

protonopen appid 3256600Game compatibility - Unofficial
ValveSoftware/Proton#9257 · opened 2025-11-23 by F1ReB4LL · updated 2025-11-23 · 1 comments · github · game page · search this game
FF1ReB4LL 2025-11-23 github

Compatibility Report

  • Name of the game with compatibility issues: GUG Demo
  • Steam AppID of the game: 3256600

System Information

  • Steam Deck (LCD)
  • Video driver version: 4.6 Mesa 24.3.4 (git-8d0948917e)
  • Kernel version: 6.11.11
  • Proton version: 1763652710 experimental-10.0-20251120

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.

Symptoms

Shows a white screen, menu music can be heard, moving right analog stick shows the cursor. Clicking L2/L3 triggers a crash.

steam-3256600(nod3dcompilerdll_buttonscrash).log

Alt+F4 triggers another crash with a Unity crash screen.

steam-3256600(nod3dcompilerdll_altf4crash).log

After adding d3dcompiler_47.dll through protontricks it still shows a white screen, but doesn't crash after clicking L2/L3 anymore. Moving the cursor around shows some graphics over the white screen:

Image

Also the "Start" button shows the menus with all the graphics:

Image

Alt+F4 still triggers the crash.

steam-3256600(withd3dcompilerdll_altf4crash).log

Reproduction

Install and run the game.

Kkisak-valve maintainer 2025-11-23 github

Hello @F1ReB4LL, these look like some lines of interest from your Proton log:

err:d3dcompiler:D3DCompile2 Failed to compile shader, vkd3d result -5.
err:d3dcompiler:D3DCompile2 Shader log:
err:d3dcompiler:D3DCompile2     <anonymous>:41:1: W4300: Redefinition of H6.
err:d3dcompiler:D3DCompile2     <anonymous>:42:1: W4300: Redefinition of ja.
err:d3dcompiler:D3DCompile2     <anonymous>:43:1: W4300: Redefinition of ha.
err:d3dcompiler:D3DCompile2     <anonymous>:346:241: E5017: Aborting due to not yet implemented feature: SM4 half division expression.
err:d3dcompiler:D3DCompile2     <anonymous>:468:64: E5017: Aborting due to not yet implemented feature: SM4 half negation expression.
err:d3dcompiler:D3DCompile2     <anonymous>:486:84: E5017: Aborting due to not yet implemented feature: SM4 half3 multiplication expression.
err:d3dcompiler:D3DCompile2

DLLs