Viewport vertex color mode: now it uses only sculpt vertex colors, even if datablock do not exist #78225

New Issue

Vyacheslav Kobozev · 2020-06-24T21:41:02+02:00

2020-06-24 21:41:02 +02:00

System Information
Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-24 14:01, hash: 6fec2e4db0
Caused by f7bbc7cdbb

Short description of error
Vertex color doesn't show in edit mode, it return only black

Exact steps for others to reproduce the error

Change the viewport shading color to vertex
Go to vertex paint mode, fill any object with any color
Go to edit mode, then it appears only black

this example from default startup:
bug.blend

BLI_assert failed: /blender/source/blender/draw/intern/draw_cache_impl_mesh.c:760, texpaint_request_active_vcol(), at 'cd_needed.vcol != 0 && "No MLOOPCOL layer available in vertpaint, but batches requested anyway!"'

Original report [this is about objectmode as well -- this does not happen with experimental feature disabled]

If old vertex color exist and new sculpt vertex colors is not, I think, viewport should take first one until full replacement.
As far as addons will import vcolors to regular vertex color, it may be handy too.
2020-06-24_22-36-40.mp4

**System Information** Operating system: Windows-7-6.1.7601-SP1 64 Bits Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.90.0 Alpha, branch: master, commit date: 2020-06-24 14:01, hash: `6fec2e4db0` Caused by f7bbc7cdbb **Short description of error** Vertex color doesn't show in edit mode, it return only black ![1.png](https://archive.blender.org/developer/F8841368/1.png) ![2.png](https://archive.blender.org/developer/F8841370/2.png) **Exact steps for others to reproduce the error** - Change the viewport shading color to vertex - Go to vertex paint mode, fill any object with any color - Go to edit mode, then it appears only black this example from default startup: [bug.blend](https://archive.blender.org/developer/F8841354/bug.blend) ``` BLI_assert failed: /blender/source/blender/draw/intern/draw_cache_impl_mesh.c:760, texpaint_request_active_vcol(), at 'cd_needed.vcol != 0 && "No MLOOPCOL layer available in vertpaint, but batches requested anyway!"' ``` **Original report [this is about objectmode as well -- this does not happen with experimental feature disabled]** If old vertex color exist and new sculpt vertex colors is not, I think, viewport should take first one until full replacement. As far as addons will import vcolors to regular vertex color, it may be handy too. [2020-06-24_22-36-40.mp4](https://archive.blender.org/developer/F8641200/2020-06-24_22-36-40.mp4)

blender-admin commented

2020-06-24 21:41:02 +02:00

#80478 was marked as duplicate of this issue

blender-admin commented

2020-06-24 21:41:02 +02:00

#78283 was marked as duplicate of this issue

Vyacheslav Kobozev commented

2020-06-24 21:41:03 +02:00

Added subscriber: @Vyach

Philipp Oeser commented

2020-06-25 14:58:42 +02:00

Added subscribers: @PabloDobarro, @lichtwerk

Philipp Oeser commented

2020-06-25 14:58:42 +02:00

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

Philipp Oeser commented

2020-06-25 14:58:42 +02:00

I think this is a bug, yes...

CC @PabloDobarro

I think this is a bug, yes... CC @PabloDobarro

Philipp Oeser changed title from ~~Viewport vertex color mode: now it uses only sculpt vertex colors, even if datablock do not exist. (bug?)~~ to Viewport vertex color mode: now it uses only sculpt vertex colors, even if datablock do not exist

2020-06-26 13:55:01 +02:00

Philipp Oeser commented

2020-06-26 13:56:00 +02:00

Added subscribers: @mike.cairns86, @Alaska

Alaska commented

2020-06-27 00:22:33 +02:00

Removed subscriber: @Alaska

Jeroen Bakker commented

2020-07-14 09:20:59 +02:00

Added subscriber: @Jeroen-Bakker

Jeroen Bakker commented

2020-07-14 09:20:59 +02:00

@lichtwerk: currently this issue is only visible when Sculpt Vertex Colors is activated in the experimental tab. I would suggest to keep this ticket open, but lower the priority. I have seen some discussions about how to proceed with sculpt vertex vs loop vertex colors, but no clear direction afaik. As both codepaths are split in the current codebase a fix would not be in the area where I would expected it to happen.

Philipp Oeser commented

2020-09-05 11:01:38 +02:00

In #78225#978676, @Jeroen-Bakker wrote:
@lichtwerk: currently this issue is only visible when Sculpt Vertex Colors is activated in the experimental tab. I would suggest to keep this ticket open, but lower the priority. I have seen some discussions about how to proceed with sculpt vertex vs loop vertex colors, but no clear direction afaik. As both codepaths are split in the current codebase a fix would not be in the area where I would expected it to happen.

In editmode, this is also happening when Sculpt Vertex Colors is deactivated in the experimental tab (also happening in 2.90 release).
Asserts here:

BLI_assert failed: /blender/source/blender/draw/intern/draw_cache_impl_mesh.c:760, texpaint_request_active_vcol(), at 'cd_needed.vcol != 0 && "No MLOOPCOL layer available in vertpaint, but batches requested anyway!"'

Feel free to change back, but I think we should not break existing functionality unless we have something better in place.

> In #78225#978676, @Jeroen-Bakker wrote: > @lichtwerk: currently this issue is only visible when Sculpt Vertex Colors is activated in the experimental tab. I would suggest to keep this ticket open, but lower the priority. I have seen some discussions about how to proceed with sculpt vertex vs loop vertex colors, but no clear direction afaik. As both codepaths are split in the current codebase a fix would not be in the area where I would expected it to happen. In editmode, this is also happening when Sculpt Vertex Colors is **deactivated** in the experimental tab (also happening in 2.90 release). Asserts here: ``` BLI_assert failed: /blender/source/blender/draw/intern/draw_cache_impl_mesh.c:760, texpaint_request_active_vcol(), at 'cd_needed.vcol != 0 && "No MLOOPCOL layer available in vertpaint, but batches requested anyway!"' ``` Feel free to change back, but I think we should not break existing functionality unless we have something better in place.

Philipp Oeser commented

2020-09-05 11:05:02 +02:00

Added subscriber: @masnain

blender-admin commented

2020-09-06 18:56:40 +02:00

This issue was referenced by bff56477c9

This issue was referenced by bff56477c9d8f1dda42f5cd58dbd8230897c2665

blender-admin commented

2020-09-06 18:56:40 +02:00

This issue was referenced by 0c4b732ef2

This issue was referenced by 0c4b732ef2cd5d3b4d6d7dbaa27801d1bfff04ae

Pablo Dobarro commented

2020-09-07 17:22:29 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Pablo Dobarro closed this issue

2020-09-07 17:22:29 +02:00

Pablo Dobarro self-assigned this 2020-09-07 17:22:29 +02:00

Thomas Dinges added this to the 2.91 milestone 2023-02-08 16:21:41 +01:00

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Viewport vertex color mode: now it uses only sculpt vertex colors, even if datablock do not exist #78225