Serious Sam Classic: The First Encounter (41050)

Compatibility Report

• Name of the game with compatibility issues: Serious Sam Classic: The First Encounter
• Steam AppID of the game: https://steamdb.info/app/41050/

System Information

• GPU: GTX 760
• Driver/LLVM version: NVIDIA 440.64
• Kernel version: 5.5.10
• https://github.com/shoober420/linux-scripts/blob/main/home/shoober420/sysinfonvidia
• Proton version: 5.0-5

Symptoms

Using OpenGL, the game runs, but high resolutions (2048x1536) will cause my mouse movements to spin rapidly by itself. It seems the game does not go fullscreen, as it has a border. High resolutions also crop the mouse cursor to a smaller dimension, making it impossible to click any buttons on the outer edges of the screen. This happens with both DXVK and WineD3D.

OGL LOG:
steam-41050ogl.log

D3D LOG:
steam-41050d3d.log

Using Direct3D causes a black screen, whether or not DXVK or WineD3D is used.

WINED3D OGL LOG:
steam-41050wineogl.log

WINED3D D3D LOG:
steam-41050wined3d.log

Same behavior as Serious Sam Classic: The Second Encounter.
https://github.com/ValveSoftware/Proton/issues/3671

Start by reviewing the linked OpenGL, Direct3D, and WineD3D logs and comparing the symptoms across rendering paths. Check the related Serious Sam Classic: The Second Encounter issue for shared behavior. Done means identifying and correcting the fullscreen, cursor, mouse-input, or black-screen compatibility problems and verifying the game at high resolution.