DOOM + DOOM II (1993) (2280)

Compatibility Report

• Name of the game with compatibility issues: Ultimate Doom
• Steam AppID of the game: 2280

System Information

• GPU: Intel HD Graphics (Bay Trail, 313 - 896 MHz)
• Driver/LLVM version: Mesa 18.2/ no llvm
• Kernel version: 4.18
• Link to full system information report as Gist
• Proton version: 3-7.6

I confirm:

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

steam-2280.log
relevant part I think is err:d3d:wined3d_debug_callback 0x1852c8: "GL_INVALID_ENUM in glMatrixMode(mode)".

Symptoms

very low fps, from 1 to 10, right from dosbox screen and the menu

Reproduction

Run the game

Notes

This also happens on my PC with Nvidia GPU, also Arch Linux.
This does not happen on PC when running Ubuntu
Running the game without Steam and using dosbox from repositories (dosbox DOOM.EXE) works fine, no issues.

Begin with steam-2280.log and the reported glMatrixMode error, then compare Proton's behavior with the working repository DOSBox invocation described in the report. Done means identifying a reproducible cause and validating a fix for the 1–10 FPS behavior on the listed systems.