Compositor artifacts from image wrapping #94845

New Issue

Marek Ištok · 2022-01-12T10:27:40+01:00

Marek Ištok commented

2022-01-12 10:27:40 +01:00

System Information
Operating system: Linux-5.15.13-arch1-1-x86_64-with-glibc2.33 64 Bits
Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.46

Blender Version
Broken: version: 3.1.0 Alpha, branch: makepkg (modified), commit date: 2022-01-04 14:15, hash: bbd0c4118b
Broken: 2.80 upwards
Worked: 2.79

Short description of error
In the compositor, when using a Scale node with a value of < 1.0 after a Translate node with wrapping enabled, a strange pattern can be sometimes seen in the final render (sort of like Z-fighting). Also, re-rendering with the same settings doesn't always yield the same results with this setup.

Changing the chunksize to anything other than 256 seems to fix this for me.

Exact steps for others to reproduce the error
I've created and attached a .blend file that has the compositor setup in the right way to display this bug. So all that's required is to render the scene - possibly refreshing the compositor a few times as the bug doesn't always occur.

blender-bug-report.blend

**System Information** Operating system: Linux-5.15.13-arch1-1-x86_64-with-glibc2.33 64 Bits Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 495.46 **Blender Version** Broken: version: 3.1.0 Alpha, branch: makepkg (modified), commit date: 2022-01-04 14:15, hash: `bbd0c4118b` Broken: 2.80 upwards Worked: 2.79 **Short description of error** In the compositor, when using a Scale node with a value of < 1.0 after a Translate node with wrapping enabled, a strange pattern can be sometimes seen in the final render (sort of like Z-fighting). Also, re-rendering with the same settings doesn't always yield the same results with this setup. Changing the chunksize to anything other than 256 seems to fix this for me. ![12_09-52-26.png](https://archive.blender.org/developer/F12802020/12_09-52-26.png) **Exact steps for others to reproduce the error** I've created and attached a .blend file that has the compositor setup in the right way to display this bug. So all that's required is to render the scene - possibly refreshing the compositor a few times as the bug doesn't always occur. [blender-bug-report.blend](https://archive.blender.org/developer/F12802017/blender-bug-report.blend)

Marek Ištok commented

2022-01-12 10:27:40 +01:00

Added subscriber: @niraami

Philipp Oeser commented

2022-01-12 13:49:23 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-01-12 13:49:23 +01:00

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

Philipp Oeser commented

2022-01-12 13:49:23 +01:00

Can confirm.

Philipp Oeser commented

2022-01-12 14:07:56 +01:00

Added subscribers: @manzanilla, @Jeroen-Bakker

Philipp Oeser commented

2022-01-12 14:07:56 +01:00

Also note that the experimental Full Frame Compositor does not support wrapping at all it seems.
This might be expected (this is explicitly checked in code), just noting that whenever we switch to it, wrapping should go as well

CC @manzanilla
CC @Jeroen-Bakker

Also note that the experimental Full Frame Compositor does not support wrapping at all it seems. This might be expected (this is explicitly checked in code), just noting that whenever we switch to it, wrapping should go as well CC @manzanilla CC @Jeroen-Bakker

Philipp Oeser removed the

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Compositor artifacts from image wrapping #94845