New Cryptomatte node: matte white RGB value above 1,1,1 when using Multi-View #89998

Closed
opened 2021-07-20 23:19:12 +02:00 by Davide Caprioli · 5 comments

System Information
Operating system: macOS-10.13.6-x86_64-i386-64bit 64 Bits
Graphics card: NVIDIA GeForce GT 650M OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.32.0 355.11.10.10.40.102

Blender Version
Broken: version: 2.93.1, branch: master, commit date: 2021-06-22 05:57, hash: 1b8d33b18c
Worked: -

Short description of error
The new Cryptomatte node outputs a white RGB value of 2,2,2 instead of 1,1,1 when Multi-View is active and 2 cameras are enabled. If you have 3 cameras enabled, the RGB value for white becomes 3,3,3. If you plug the resulting b/w mask as a factor in a Mix node it causes errors in the RGB values of the composited image. With the Cryptomatte (Legacy) node everything works fine.

Exact steps for others to reproduce the error
Open the file provided and hit render. In the compositor inspect the white area of the matte output with right-click (eye dropper).

Cryptomatte_Multi-View_bug.blend

Cryptomatte_Multi-View.png

Cryptomatte_Legacy_Multi-View.png

**System Information** Operating system: macOS-10.13.6-x86_64-i386-64bit 64 Bits Graphics card: NVIDIA GeForce GT 650M OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.32.0 355.11.10.10.40.102 **Blender Version** Broken: version: 2.93.1, branch: master, commit date: 2021-06-22 05:57, hash: `1b8d33b18c` Worked: - **Short description of error** The new Cryptomatte node outputs a white RGB value of 2,2,2 instead of 1,1,1 when Multi-View is active and 2 cameras are enabled. If you have 3 cameras enabled, the RGB value for white becomes 3,3,3. If you plug the resulting b/w mask as a factor in a Mix node it causes errors in the RGB values of the composited image. With the Cryptomatte (Legacy) node everything works fine. **Exact steps for others to reproduce the error** Open the file provided and hit render. In the compositor inspect the white area of the matte output with right-click (eye dropper). [Cryptomatte_Multi-View_bug.blend](https://archive.blender.org/developer/F10230464/Cryptomatte_Multi-View_bug.blend) ![Cryptomatte_Multi-View.png](https://archive.blender.org/developer/F10230491/Cryptomatte_Multi-View.png) ![Cryptomatte_Legacy_Multi-View.png](https://archive.blender.org/developer/F10230493/Cryptomatte_Legacy_Multi-View.png)

Added subscriber: @DaveDeer

Added subscriber: @DaveDeer
Member

Added subscriber: @PratikPB2123

Added subscriber: @PratikPB2123
Member

Changed status from 'Needs Triage' to: 'Confirmed'

Changed status from 'Needs Triage' to: 'Confirmed'

This issue was referenced by 7d17f2addf

This issue was referenced by 7d17f2addf80f7ee315b49e0c281562050ee0667

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'
Manuel Castilla self-assigned this 2021-08-23 17:20:47 +02:00
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Reference: blender/blender#89998
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