Vertex Paint mode can edit only 8 color attributes #98731

New Issue

Jan Kadeřábek · 2022-06-09T14:32:45+02:00

Jan Kadeřábek commented

2022-06-09 14:32:45 +02:00

System Information
Operating system:
Graphics card:

Blender Version
Broken: 3.2.0 Stable (e05e1e3691)

Short description of error
Vertex Paint mode allows editing only first 8 color attributes - when selecting any with index > 7, the data of the attribute of index 7 are shown and painting doesn't work.
As Sculpt Paint doesn't have such limit and being able to use more than 8 layers is great advantage (especially for game artists working with complex shaders), I suggest improving Vertex Paint to handle more attributes, instead of getting back the limit of 8 color attributes max (like with vertex colors in 3.1 and older).

Exact steps for others to reproduce the error
Enter Vertex Paint and try to paint Color.008 attribute - the painting doesn't work and it shows the data of Color.007 (index 7).vertex-paint_max-8-layers-limit.blend

**System Information** Operating system: Graphics card: **Blender Version** Broken: 3.2.0 Stable (e05e1e369187) **Short description of error** Vertex Paint mode allows editing only first 8 color attributes - when selecting any with index > 7, the data of the attribute of index 7 are shown and painting doesn't work. As Sculpt Paint doesn't have such limit and being able to use more than 8 layers is great advantage (especially for game artists working with complex shaders), I suggest improving Vertex Paint to handle more attributes, instead of getting back the limit of 8 color attributes max (like with vertex colors in 3.1 and older). **Exact steps for others to reproduce the error** Enter Vertex Paint and try to paint Color.008 attribute - the painting doesn't work and it shows the data of Color.007 (index 7).[vertex-paint_max-8-layers-limit.blend](https://archive.blender.org/developer/F13141628/vertex-paint_max-8-layers-limit.blend)

Jan Kadeřábek commented

2022-06-09 14:32:45 +02:00

Added subscriber: @JanKaderabek

blender-admin commented

2022-06-09 14:32:45 +02:00

#99843 was marked as duplicate of this issue

Jan Kadeřábek changed title from ~~Vertex Paint mode supports only 8 color attributes~~ to Vertex Paint mode can edit only 8 color attributes

2022-06-09 14:33:17 +02:00

Jan Kadeřábek commented

2022-06-09 14:34:34 +02:00

Added subscriber: @lichtwerk

Philipp Oeser was assigned by Jan Kadeřábek

2022-06-09 14:35:09 +02:00

Omar Emara commented

2022-06-09 15:06:59 +02:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-06-09 15:06:59 +02:00

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

Philipp Oeser was unassigned by Omar Emara

2022-06-09 15:06:59 +02:00

Omar Emara commented

2022-06-09 15:06:59 +02:00

I know Blender had an 8 vertex color layers limitation, not sure if this is still the case in 3.2. But regardless of the limitation, this should be reflected in the UI somehow, so marking as confirmed.

Alexandre MK commented

2022-06-09 17:25:53 +02:00

Added subscriber: @lkx

Lorenzo Clerici commented

2022-06-09 20:19:01 +02:00

Added subscriber: @Lorenzo-Clerici

Antanas commented

2022-06-10 09:40:33 +02:00

Added subscriber: @jakasan2000

Antanas commented

2022-06-10 09:40:33 +02:00

Totally agree, we need this functionality

Julien Kaspar commented

2022-06-10 09:53:14 +02:00

Added subscribers: @fclem, @JulienKaspar

Julien Kaspar commented

2022-06-10 09:53:14 +02:00

The limitation of only working with up to 8 color attributes should be completely removed.
@fclem What do you think about this issue? Eevee is planning to remove these limitations even further afaik.

The limitation of only working with up to 8 color attributes should be completely removed. @fclem What do you think about this issue? Eevee is planning to remove these limitations even further afaik.

Clément Foucault commented

2022-06-10 15:56:19 +02:00

The real limit is the number of attributes (UVs (and associated Tangent) & VertexColor) used by the shader. There can be a maximum of 14 with the current pipeline. It is not directly EEVEE related but removing this limitation is more of a longer term project.

But as of the internal data limitation, with the use of generic attributes, I think there is no much sense to keep it.

The real limit is the number of attributes (UVs (and associated Tangent) & VertexColor) used by the shader. There can be a maximum of 14 with the current pipeline. It is not directly EEVEE related but removing this limitation is more of a longer term project. But as of the internal data limitation, with the use of generic attributes, I think there is no much sense to keep it.

Philipp Oeser commented

2022-06-14 09:33:22 +02:00

If for some reason the limitation cannot be lifted easily shortterm, we should notify about (and enforce) the limit, like 04b4ec7889

If for some reason the limitation cannot be lifted easily shortterm, we should notify about (and enforce) the limit, like 04b4ec7889

Jan Kadeřábek commented

2022-06-15 18:18:45 +02:00

In #98731#1374241, @lichtwerk wrote:
If for some reason the limitation cannot be lifted easily shortterm, we should notify about (and enforce) the limit, like 04b4ec7889

Sculpt Paint works with more col attributes, so this change would actually cause regression of the existing and very useful functionality.

> In #98731#1374241, @lichtwerk wrote: > If for some reason the limitation cannot be lifted easily shortterm, we should notify about (and enforce) the limit, like 04b4ec7889 Sculpt Paint works with more col attributes, so this change would actually cause regression of the existing and very useful functionality.

Fabian Zeller commented

2022-06-18 18:45:11 +02:00

Added subscriber: @Prekek

Julien Kaspar commented

2022-06-30 12:03:47 +02:00

We agreed in the recent module meeting that this bug should be prioritised for the release of Blender 3.3. So changing the priority to high.

Hans Goudey commented

2022-07-01 21:20:33 +02:00

Added subscriber: @HooglyBoogly

Hans Goudey commented

2022-07-01 21:20:33 +02:00

This patch is related and probably addresses some of the rendering side of things: D15205: Refactor: Extract color attributes as generic attributes

This patch is related and probably addresses some of the rendering side of things: [D15205: Refactor: Extract color attributes as generic attributes](https://archive.blender.org/developer/D15205)

Jeroen Bakker commented

2022-07-15 12:56:15 +02:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2022-07-15 12:56:15 +02:00

Mark as TODO as it is new development/feature, not fixing a regression.

Pratik Borhade commented

2022-07-20 03:39:09 +02:00

Added subscribers: @NKO, @dupoxy

Jan Kadeřábek commented

2022-08-01 11:31:45 +02:00

In #98731#1382797, @JulienKaspar wrote:
We agreed in the recent module meeting that this bug should be prioritised for the release of Blender 3.3. So changing the priority to high.

I just tested 3.3 beta and see no change (painting of index > 7 doesn't work). Is it still planned to be fixed in this release?

> In #98731#1382797, @JulienKaspar wrote: > We agreed in the recent module meeting that this bug should be prioritised for the release of Blender 3.3. So changing the priority to high. I just tested 3.3 beta and see no change (painting of index > 7 doesn't work). Is it still planned to be fixed in this release?

Julien Kaspar commented

2022-08-01 15:55:03 +02:00

This requires bigger changes with for example D15428. So this will unfortunately at the earliest be fixed in 3.4.

This requires bigger changes with for example [D15428](https://archive.blender.org/developer/D15428). So this will unfortunately at the earliest be fixed in 3.4.

Julien Kaspar commented

2022-10-13 14:25:24 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Julien Kaspar closed this issue

2022-10-13 14:25:24 +02:00

Julien Kaspar self-assigned this 2022-10-13 14:25:24 +02:00

Julien Kaspar commented

2022-10-13 14:25:24 +02:00

This seems to ti be resolved now. Will close task,

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Vertex Paint mode can edit only 8 color attributes #98731