I had troubles with my Doom 3 game being f*cked up a little: one of the issues was that the resolution has been reset to 640×480 pixels, and I could only change it back to 1024×768 pixels max.
However, I was able to fix it and playing in pretty widescreen again.
Check out new article: I published an updated article on how to play DOOM 3 nowadays – on modern ARM-based Apple Silicon Macs and 64-bit macOS.
Here is what you need to do for your custom screen settings in Doom 3
The following 4 parameters from within your DoomConfig.cfg-file are important:
r_customHeightr_customWidthr_aspectRatior_mode
Here is an example from my own config, set to 16:9 widescreen with 1280×800 pixel:
seta r_customHeight "800" seta r_customWidth "1280" seta r_mode "-1" seta r_aspectRatio "1"
The value r_aspectRatio can be set to…
"0"for 4:3"1"for 16:9"2"for 16:10
"r_mode" set to "-1" tells the game to use the values for r_customHeight and r_customWidth.
References used
Doom 3 Resurrection – widescreen support?
Doom 3 Tweak Guide (Wayback Machine snapshot 25/02/2010)
Time to play!
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