Sculpt vertex colors conversion washed out #79005

New Issue

TheRedWaxPolice · 2020-07-16T22:19:48+02:00

TheRedWaxPolice commented

2020-07-16 22:19:48 +02:00

System Information
Operating system: Win 10

Blender Version
Broken: blender-2.90.0-613d314251f3-windows64
Worked: Dunno..

Short description of error
This is something I found when loading vertex colors made in an external application (zbrush) into blender's sculpt vertex colors.
When I convert the regular vertex colors into sculpt vertex colors, the colors shows up washed out...
Simple example below:

Exact steps for others to reproduce the error
Load the following sphere fbx file. File/Import/FBX (it contains vertex colors created in zbrush)... The model might show up very tiny, so you may need to frame the model to see it. View/Frame Selected
PolySphere.fbx
Select the model and go to Vertex Paint mode. This is how it the colors look like (in flat shading), no issues...

Now go to Sculpt mode
Switch the color type to Vertex, in the shading popover

In the Object Data properties tab, add a Sculpt Vertex Color layer, and then click on the "Load Sculpt Vertex Color" button, to load/convert the regular vertex colors into sculpt vertex colors

And this is how it loads the colors (washed out)

I don't now if it's a bug/limitation or if there's something else that needs to be done to make it work as expected... So yeah..

**System Information** Operating system: Win 10 **Blender Version** Broken: blender-2.90.0-613d314251f3-windows64 Worked: Dunno.. **Short description of error** This is something I found when loading vertex colors made in an external application (zbrush) into blender's sculpt vertex colors. When I convert the regular vertex colors into sculpt vertex colors, the colors shows up washed out... Simple example below: **Exact steps for others to reproduce the error** Load the following sphere fbx file. **File/Import/FBX** (it contains vertex colors created in zbrush)... The model might show up very tiny, so you may need to frame the model to see it. **View/Frame Selected** [PolySphere.fbx](https://archive.blender.org/developer/F8699948/PolySphere.fbx) Select the model and go to Vertex Paint mode. This is how it the colors look like (in flat shading), no issues... ![image.png](https://archive.blender.org/developer/F8699967/image.png) Now go to Sculpt mode Switch the color type to Vertex, in the shading popover ![image.png](https://archive.blender.org/developer/F8699980/image.png) In the Object Data properties tab, add a Sculpt Vertex Color layer, and then click on the "Load Sculpt Vertex Color" button, to load/convert the regular vertex colors into sculpt vertex colors ![image.png](https://archive.blender.org/developer/F8699992/image.png) And this is how it loads the colors (washed out) ![image.png](https://archive.blender.org/developer/F8699996/image.png) I don't now if it's a bug/limitation or if there's something else that needs to be done to make it work as expected... So yeah..

TheRedWaxPolice commented

2020-07-16 22:19:48 +02:00

Added subscriber: @TheRedWaxPolice

blender-admin commented

2020-07-16 22:19:48 +02:00

#91924 was marked as duplicate of this issue

blender-admin commented

2020-07-16 22:19:48 +02:00

#86937 was marked as duplicate of this issue

Pablo Dobarro commented

2020-07-16 22:54:46 +02:00

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

Joseph Brandenburg commented

2020-07-17 02:18:09 +02:00

Added subscriber: @Josephbburg

Joseph Brandenburg commented

2020-07-17 02:18:09 +02:00

I'm willing to bet this is a color-space issue. Do you know if ZBrush applies SRGB color space to the vertex colors, or is it displayed in a linear color space?

Pablo Dobarro commented

2021-03-25 19:56:42 +01:00

Added subscribers: @Vyach, @Aeraglyx, @PabloDobarro

Vyacheslav Kobozev commented

2021-08-11 22:01:16 +02:00

hmm… I can`t convert colors properly with linear ←→ sRGB operations.
Did I make mistake, or there is some more conversions?
Really tired to wait fix and want to make node
v-s colors.blend

2021-08-11_22-20-35.mp4

hmm… I can`t convert colors properly with linear ←→ sRGB operations. Did I make mistake, or there is some more conversions? Really tired to wait fix and want to make node [v-s colors.blend](https://archive.blender.org/developer/F10277797/v-s_colors.blend) [2021-08-11_22-20-35.mp4](https://archive.blender.org/developer/F10277798/2021-08-11_22-20-35.mp4)

Mateusz commented

2021-09-03 17:56:53 +02:00

Added subscriber: @Zunio