Borland Pascal 7.0 taught a generation of programmers the math behind modern GPUs. While BGI was slow, direct memory access allowed for smooth 3D engines similar to Doom or Wolfenstein 3D .
: Draw to a "virtual screen" in RAM, then Move it to video memory to prevent flickering. 🎨 Rendering Techniques Wireframe : The simplest form using Line() .
: Filling polygons with a single color based on the surface normal.