Cycles Normal Baking Incorrect Edges with Extrusion #56579

New Issue

Jonathan Lampel · 2018-08-27T23:28:14+02:00

Jonathan Lampel commented

2018-08-27 23:28:14 +02:00

System Information
Windows 10, Ryzen Threadripper, GeForce 1080Ti

Blender Version
Broken: 2.79 bb98e83b99
Worked: Can't find a build that does

Short description of error
When baking normals in Cycles, using Extrude instead of a cage object results in incorrect shading on sharp edges. It appears that each face of the virtual cage is firing rays in the direction of its original normals instead of the extruded normals.

This is never the desired behavior for a cage, because the result is the same as what can be accomplished without a cage.

Using Extrude at a value of 0.1:

Using a linked duplicate cage object with a displacement of 0.1:

Exact steps for others to reproduce the error

Unwrap a cube, with margins.
Create a second cube with beveled edges, marked sharp, and set to smooth shading.
Bake the beveled cube's normals to the original cube with 'Cage' enabled and Extrude set to 0.1
Create a linked duplicate of the original cube and give it a displacement modifier with a value of 0.1
Bake the beveled cube's normals to the original cube with 'Cage' enabled and the cage object set to the duplicated cube
Compare both normal maps

baked-cube.blend

**System Information** Windows 10, Ryzen Threadripper, GeForce 1080Ti **Blender Version** Broken: 2.79 bb98e83b99e Worked: Can't find a build that does **Short description of error** When baking normals in Cycles, using Extrude instead of a cage object results in incorrect shading on sharp edges. It appears that each face of the virtual cage is firing rays in the direction of its original normals instead of the extruded normals. This is never the desired behavior for a cage, because the result is the same as what can be accomplished without a cage. Using Extrude at a value of 0.1: ![cage_extrude.png](https://archive.blender.org/developer/F4415725/cage_extrude.png) ![2018-08-27 14_13_53-Blender_ [C__Users_Jonathan_Desktop_baked-cube.blend].png](https://archive.blender.org/developer/F4415745/2018-08-27_14_13_53-Blender___C__Users_Jonathan_Desktop_baked-cube.blend_.png) Using a linked duplicate cage object with a displacement of 0.1: ![cage_objectpng.png](https://archive.blender.org/developer/F4415751/cage_objectpng.png) ![2018-08-27 14_18_04-Blender_ [C__Users_Jonathan_Desktop_baked-cube.blend].png](https://archive.blender.org/developer/F4415755/2018-08-27_14_18_04-Blender___C__Users_Jonathan_Desktop_baked-cube.blend_.png) **Exact steps for others to reproduce the error** 1. Unwrap a cube, with margins. 2. Create a second cube with beveled edges, marked sharp, and set to smooth shading. 3. Bake the beveled cube's normals to the original cube with 'Cage' enabled and Extrude set to 0.1 4. Create a linked duplicate of the original cube and give it a displacement modifier with a value of 0.1 5. Bake the beveled cube's normals to the original cube with 'Cage' enabled and the cage object set to the duplicated cube 6. Compare both normal maps [baked-cube.blend](https://archive.blender.org/developer/F4427267/baked-cube.blend)

Jonathan Lampel commented

2018-08-27 23:28:14 +02:00

Added subscriber: @JonathanLampel-4

Yevgeny Makarov commented

2018-08-28 06:35:25 +02:00

Added subscriber: @jenkm

Yevgeny Makarov commented

2018-08-28 06:35:25 +02:00

You need to attach your .blend file.

Jonathan Lampel commented

2018-08-28 16:47:19 +02:00

Whoops, thought I had. Done!

Bastien Montagne commented

2018-09-03 15:01:45 +02:00

Added subscribers: @brecht, @mont29

Brecht Van Lommel was assigned by Bastien Montagne

2018-09-03 15:01:45 +02:00

Bastien Montagne commented

2018-09-03 15:01:45 +02:00

@brecht no idea whether this is bug or intended behavior, will let you decide.

Brecht Van Lommel was unassigned by Dalai Felinto

2019-12-23 16:36:01 +01:00

Germano Cavalcante commented

2020-02-11 13:23:14 +01:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-02-11 13:23:14 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Germano Cavalcante closed this issue

2020-02-11 13:23:14 +01:00

Germano Cavalcante self-assigned this 2020-02-11 13:23:14 +01:00

Germano Cavalcante commented

2020-02-11 13:23:14 +01:00

I reproduced this bug in blender 2.79b, but not the latest daily build, so it appears the bug has been fixed already.

Please try the latest daily build: https://builder.blender.org/download/

If the problem persists, please let us know so we can re-open the report. Don't forget to mention the specific version you tested again.

I reproduced this bug in blender 2.79b, but not the latest daily build, so it appears the bug has been fixed already. Please try the latest daily build: https://builder.blender.org/download/ If the problem persists, please let us know so we can re-open the report. Don't forget to mention the specific version you tested again.

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Cycles Normal Baking Incorrect Edges with Extrusion #56579