I was surprised to hear that many graphics people were surprised to learn that normals should be transformed with the adjugate transpose matrix.

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• URL: https://x.com/EricLengyel/status/1867348503443476873
• Author: Eric Lengyel (@EricLengyel)
• Posted: 2024-12-12 23:19:11

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1/ @EricLengyel

I was surprised to hear that many graphics people were surprised to learn that normals should be transformed with the adjugate transpose matrix. This is something I’ve written about extensively, so here’s a new blog post that talks about what’s going on.
https://terathon.com/blog/transforming-normals.html

2/ @SuppDiggyDawg

@EricLengyel

I’m surprised to read that you were surprised to hear that many graphics people were surprised to learn that!

3/ @EricLengyel

@SuppDiggyDawg

It’s only been in the graphics literature for 35 years, so maybe my expectations were too high.

Branches: 2024-12-13-winden-i-guess-that-people-today-can-no-longer-afford, 2024-12-13-simplex_fx-you-act-like-if-we-could-actually-read-and-shit