I love Bisqwit's older videos, where things were done using a crazy mix of DOSBOX and a TSR that typed code into "that editor". The It's a shame that this vide

I love Bisqwit's older videos, where things were done using a crazy mix of DOSBOX and a TSR that typed code into "that editor". The It's a shame that this video is slightly misnamed - it creates a "portal renderer" which is more like what a BUILD-style engine than what Doom did. He's got another cool video where he makes a 3D demo using OpenGL, with a DGJPP-compiled version of OSMesa: https://www.youtube.com/watch?v=vkUwT9U1GzA https://www.youtube.com/watch?v=vkUwT9U1GzA