alt Hacker News> Triangles are easy to rasterize
sure, rasterizing triangle is not so hard, but.. you know, rasterizing rectangle is far far easier
Replies
maximilianburke • today at 5:29 PM
…as long as all points are co-planar.
> Triangles are easy to rasterize
sure, rasterizing triangle is not so hard, but.. you know, rasterizing rectangle is far far easier
…as long as all points are co-planar.
Rasterizing triangles is a nightmare, especially if performance is a goal. One of the biggest issues is getting abutting triangles to render so you don't have overlapping pixels or gaps.
I did this stuff for a living 30 years ago. Just this week I had Deep Think create a 3D engine with triangle rasterizer in 16-bit x86 for the original IBM XT.