Compositor - ID Mask Anti Aliasing not working #49944

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opened 2016-11-05 10:43:23 +01:00 by Manuel · 16 comments
First-time contributor

iMac Retina Late 2015
OS X El Capitan

Blender 2.78a
Worked: 2.76

Anti Aliasing in the ID Mask Node doesn't work anymore.

Left side: Blender 2.78a Right side: Blender 2.76

ID Mask AA Bug.jpg

iMac Retina Late 2015 OS X El Capitan Blender 2.78a Worked: 2.76 Anti Aliasing in the ID Mask Node doesn't work anymore. Left side: Blender 2.78a Right side: Blender 2.76 ![ID Mask AA Bug.jpg](https://archive.blender.org/developer/F393043/ID_Mask_AA_Bug.jpg)
Author
First-time contributor

Changed status to: 'Open'

Changed status to: 'Open'
Author
First-time contributor

Added subscriber: @ManuelMarino-1

Added subscriber: @ManuelMarino-1

Added subscriber: @Sergey

Added subscriber: @Sergey

This was an intentional change in feb574f. The issue was that adding two masks did not give proper full coverage of the image causing compositing artifacts.

However, here it seems there is no AA at all (hard to tell from just seeing the image). It might or might not be a real issue here.

This is why it is always important to attach .blend file which demonstrates the issue.

This was an intentional change in feb574f. The issue was that adding two masks did not give proper full coverage of the image causing compositing artifacts. However, here it seems there is no AA at all (hard to tell from just seeing the image). It might or might not be a real issue here. This is why it is always important to attach .blend file which demonstrates the issue.
Author
First-time contributor

Here's the blend file

ID Mask no AA.blend

Here's the blend file [ID Mask no AA.blend](https://archive.blender.org/developer/F394455/ID_Mask_no_AA.blend)
Sergey Sharybin self-assigned this 2016-11-08 10:44:30 +01:00

Ok, there is AA in the mask, but it seems to be not enough to give smooth edges. Will try to tweak some parameters to solve both of this problems..

Ok, there is AA in the mask, but it seems to be not enough to give smooth edges. Will try to tweak some parameters to solve both of this problems..
Sergey Sharybin was unassigned by Dalai Felinto 2019-12-23 16:36:55 +01:00

Added subscriber: @mano-wii

Added subscriber: @mano-wii

Any news here?
I can confirm that although anti aliasing works, it was much better before.

Any news here? I can confirm that although anti aliasing works, it was much better before.

Added subscriber: @dfelinto

Added subscriber: @dfelinto

This is a know issue, a limitation of the current alias algorithm/implementation.

This is a know issue, a limitation of the current alias algorithm/implementation.
Member

Added subscriber: @Jeroen-Bakker

Added subscriber: @Jeroen-Bakker
Member

We currently have the AA node. From workflow point of view masks can be added and AA afterwards.
For more complex setups use Cryptomatte.

My proposal would be to use the SMAA operators for AA in ID Mask with the default settings. How to use these operators can be found in AntiAliasingNode::convertToOperations.

We currently have the AA node. From workflow point of view masks can be added and AA afterwards. For more complex setups use Cryptomatte. My proposal would be to use the SMAA operators for AA in ID Mask with the default settings. How to use these operators can be found in `AntiAliasingNode::convertToOperations`.
First-time contributor

Added subscriber: @tactical_fluke

Added subscriber: @tactical_fluke
Aidan Haile self-assigned this 2021-07-11 13:25:07 +02:00
First-time contributor

Hey, I'm a new contributor, and I'd like to pick up this task.

I just submitted a possible patch for this at https://developer.blender.org/D11881

Hey, I'm a new contributor, and I'd like to pick up this task. I just submitted a possible patch for this at https://developer.blender.org/D11881
First-time contributor

This issue was referenced by 98c4224ff0

This issue was referenced by 98c4224ff032a746a54cc04b6d9a485620de0f4a

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'
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Reference: blender/blender#49944
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