Sculpt Painting: Color Filter saturates colors that have no saturation #97097

New Issue

Julien Kaspar · 2022-04-06T10:09:17+02:00

Julien Kaspar commented

2022-04-06 10:09:17 +02:00

System Information
Operating system: Linux-5.4.0-107-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: Quadro GP100/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.103.01

Blender Version
Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-04-05 23:33, hash: 931ae424b9

Short description of error
This relates to the new color attribute painting tools in sculpt mode. When using the the Color Filter tool and setting it to "Saturation" it will always saturate colors that have no saturation. This is very unexpected behaviour. If a color has a starting saturation of 0, then it should not be affected by additional saturation.

Exact steps for others to reproduce the error

Enter sculpt mode
Use the Paint tool to paint some colors and some white with a few strokes
Switch to the Color Filter tool and set it to "Saturation" in the tool settings
Click and drag from left to right and see how the painted and un-painted areas get affected

**System Information** Operating system: Linux-5.4.0-107-generic-x86_64-with-glibc2.31 64 Bits Graphics card: Quadro GP100/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 470.103.01 **Blender Version** Broken: version: 3.2.0 Alpha, branch: master, commit date: 2022-04-05 23:33, hash: `931ae424b9` **Short description of error** This relates to the new color attribute painting tools in sculpt mode. When using the the Color Filter tool and setting it to "Saturation" it will always saturate colors that have no saturation. This is very unexpected behaviour. If a color has a starting saturation of 0, then it should not be affected by additional saturation. **Exact steps for others to reproduce the error** - Enter sculpt mode - Use the Paint tool to paint some colors and some white with a few strokes - Switch to the Color Filter tool and set it to "Saturation" in the tool settings - Click and drag from left to right and see how the painted and un-painted areas get affected

Julien Kaspar commented

2022-04-06 10:09:17 +02:00

Added subscriber: @JulienKaspar

Omar Emara commented

2022-04-06 10:39:45 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-04-06 10:39:45 +02:00

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

Omar Emara commented

2022-04-06 10:39:45 +02:00

Starting point with a invisible vertical white stroke as well:

After applying tool:

Starting point with a invisible vertical white stroke as well: ![20220406-103834.png](https://archive.blender.org/developer/F12977665/20220406-103834.png) After applying tool: ![20220406-103841.png](https://archive.blender.org/developer/F12977667/20220406-103841.png)

blender-admin commented

2022-04-11 19:24:01 +02:00

This issue was referenced by a99639792b

This issue was referenced by a99639792b1628493139eb9943ae4befbdc6b613

Joseph Eagar commented

2022-04-11 19:25:46 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Joseph Eagar closed this issue

2022-04-11 19:25:46 +02:00

Joseph Eagar self-assigned this 2022-04-11 19:25:46 +02:00

Julien Kaspar commented

2022-04-13 14:03:54 +02:00

Changed status from 'Resolved' to: 'Confirmed'

Julien Kaspar reopened this issue

2022-04-13 14:03:54 +02:00

Julien Kaspar commented

2022-04-13 14:03:54 +02:00

@JosephEagar I would reopen the bug since the core issue is not fixed. Unpainted colors are no longer affected by the tool with a99639792b,
but area that is painted with pure white or any other color that has no saturation is still being saturated in random colors.

I suggest to have the starting saturation be a multiplier to how strong the saturation operation is per color. This is how other painting applications like Krita handle these operations as well.

@JosephEagar I would reopen the bug since the core issue is not fixed. Unpainted colors are no longer affected by the tool with a99639792b, but area that is painted with pure white or any other color that has no saturation is still being saturated in random colors. I suggest to have the starting saturation be a multiplier to how strong the saturation operation is per color. This is how other painting applications like Krita handle these operations as well.

Julien Kaspar commented

2022-04-13 14:15:00 +02:00

Also raising the priority since any recent color attribute issues should get solved for Blender 3.2.