I can't find one. Probably the best way to repro would be to run the Quake 1 shareware demo under DOSBOX. The command is ~ (open the console) then 'timerefres

I can't find one. Probably the best way to repro would be to run the Quake 1 shareware demo under DOSBOX. The command is ~ (open the console) then 'timerefresh'. Hopefully, you can turn down the DOSBOX CPU budget low enough to see the software rasterizer in action. This guys did videos of Doom rendering pixel-by-pixel http://fabiensanglard.net/doomIphone/doomClassicRenderer.php http://fabiensanglard.net/doomIphone/doomClassicRenderer.php But, he didn't do the same for Quake. That's the best I can do for ya.