Regression on baking normals with Cycles - reversed normals? #46507

New Issue

Jaagup Irve · 2015-10-16T11:06:38+02:00

Jaagup Irve commented

2015-10-16 11:06:38 +02:00

System Information
Observed on both Win and Mac

Blender Version
Broken: 2.76 official
Worked: 2.75a

Short description of error
There appears to be some baking-related bug, which rotates faces during a bake -- might either be a rotation or a flipped normal.

My artist had no time to report a bug, and it is somewhat difficult to explain why he needs the weird normal map bake, but please trust us that there is a regression and we are all sad.

Exact steps for others to reproduce the error
Open the attached file in both 2.75a and 2.76 and observe difference when hitting "bake".

**System Information** Observed on both Win and Mac **Blender Version** Broken: 2.76 official Worked: 2.75a **Short description of error** There appears to be some baking-related bug, which rotates faces during a bake -- might either be a rotation or a flipped normal. My artist had no time to report a bug, and it is somewhat difficult to explain why he needs the weird normal map bake, but please trust us that there is a regression and we are all sad. **Exact steps for others to reproduce the error** Open the attached file in both 2.75a and 2.76 and observe difference when hitting "bake".

Jaagup Irve commented

2015-10-16 11:06:38 +02:00

Changed status to: 'Open'

Jaagup Irve commented

2015-10-16 11:06:38 +02:00

Added subscriber: @irve

Jaagup Irve commented

2015-10-16 11:07:33 +02:00

Made a mistake while attaching the file: bug.2.76.blend

Made a mistake while attaching the file: [bug.2.76.blend](https://archive.blender.org/developer/F245427/bug.2.76.blend)

Jaagup Irve commented

2015-10-16 11:50:59 +02:00

Might be related to #42015 , but the testcase runs into the problem even when modifier is deleted.

Bastien Montagne commented

2015-10-16 11:58:03 +02:00

Added subscriber: @mont29

Bastien Montagne changed title from ~~Regression on baking~~ to Regression on baking normals with Cycles - reversed normals?

2015-10-16 11:59:12 +02:00

Robert M commented

2015-10-19 01:41:32 +02:00

Added subscriber: @robertm

Robert M commented

2015-10-19 01:41:32 +02:00

I can also confirm this bug. It seems that some but not all faces get rotated by 180 degrees during baking.
Here another example .blend:
Baking_UV_rotation_bug.blend
Press "Bake". After baking connect the bake_texture output to the Diffuse BSDF.

I can also confirm this bug. It seems that some but not all faces get rotated by 180 degrees during baking. Here another example .blend: [Baking_UV_rotation_bug.blend](https://archive.blender.org/developer/F245833/Baking_UV_rotation_bug.blend) Press "Bake". After baking connect the bake_texture output to the Diffuse BSDF.

blender-admin commented

2015-10-30 04:59:48 +01:00

This issue was referenced by a3c9374440

This issue was referenced by a3c9374440a53c7f6a41627787d497975d758efe

Campbell Barton commented

2015-10-30 05:06:00 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2015-10-30 05:06:00 +01:00

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Regression on baking normals with Cycles - reversed normals? #46507