Regression: Baked Normal Map From Multiresolution Produces Strange Result on edges with crease #119997
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Reference: blender/blender#119997
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System Information
Operating system: Windows 10 Version 22H2
Graphics card: NVIDIA GeForce RTX 3060 TI
Blender Version
Broken: version: 4.1.0, branch: blender-v4.1-release, commit date: 2024-03-25 20:42, hash:
40a5e739e270
Worked: 4.0
Short description of error
Baking Normals from mutliresolution does not work.
40a5e739e2
Exact steps for others to reproduce the error
[If starting from the default settings]
[If starting from normal_bake.blend]
Baked Normal Map From Multiresolution Produces Strange Resultto Regression: Baked Normal Map From Multiresolution Produces Strange ResultHi @Sean-Baumchen I'm not sure what do you expect differently. The steps and also the test file result appears to me to be pretty normal. It looks also consistent if I sculpt over multires then bake as well.
Tested 4.0.2 all the way to latest 4.2, the outcome is consistent. Could you give us an example of what you believe is the correct result?
Hello @ChengduLittleA please find enclosed a video of the issue that I am seeing. At the beginning of the video the cube subdivided by the multiresolution modifier is shown. It looks identical to the un-subdivided cube.
When I decrease subdivisions, and bake the normal then I was expecting that the normal map to point straight out (i.e., not make any changes to the normals in this situation), but it sort of "rounds" the edges, and does not appear to match the higher subdivisions of the model.
I am using version: 4.1.0
Edit: my enabled add-ons:
Enclosed in this message is a video of the same issue (from a new file) on version: 4.2.0 Alpha, branch: main, commit date: 2024-03-29 00:22
I believe I understood that you get this result by having creases on all the edges on the cube thus the subdiv button doesn't appear to be smoothing the geometry. Then the bake should respect the crease.
Edit: can confirm it's broken starting in some version of 4.1, in 4.0 and prior, the corner reflection is smooth. Looks more like a display issue since both bakes looks the same, file under eevee for the moment, bisecting...
Good:
9be62e85b7
Bad:
6007838bb2
Apparently I got to commit
931c176b06
but it's not relevant, probably something wrong in the middleRegression: Baked Normal Map From Multiresolution Produces Strange Resultto Regression: Baked Normal Map From Multiresolution Produces Strange Result on edges with crease