Shaders - Diffuse Lighting - Oren-Nayar
Godot doesn't implement the original Oren-Nayar. Instead it implements a proposed improvement by Yasuhiro Fujii.
In this video I show what's implemented in shader and how to implement the original qualitative Oren-Nayar
Links
Yasuhiro Fujii: https://mimosa-pudica.net/improved-or...
Oren-Nayar: https://www1.cs.columbia.edu/CAVE/pub...
00:00 Intro
00:28 Cleanup
00:47 Copying Oren-Nayar Godot implementation
02:30 Implementing
04:41 It's not Oren-Nayar
05:48 Explanation
08:21 Implementing original Oren-Nayar
10:17 Conclusion
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