"Sample colour" picks incorrect colour if Mirror modifier exists on mesh #58763

New Issue

Clint Hobson · 2018-12-05T04:13:33+01:00

Clint Hobson commented

2018-12-05 04:13:33 +01:00

System Information
Operating system: Ubuntu 18.04
Graphics card: Nvidia Geforce 1080

Blender Version
Broken: 2.80, 0f5b53ba4d

Short description of error
"Sample colour" picks incorrect colour if Mirror modifier exists on mesh

Exact steps for others to reproduce the error

Open the attached blend file text paint.blend
Press S key to sample the blue colour, and then paint in the red area, and vice versa
Notice it does not paint with the expected colour
"Apply" the Mirror modifier so it no longer exists in the modifier stack

Attempt sampling colours and painting as above, notice it now paints with the expected colour.

**System Information** Operating system: Ubuntu 18.04 Graphics card: Nvidia Geforce 1080 **Blender Version** Broken: 2.80, 0f5b53ba4dc **Short description of error** "Sample colour" picks incorrect colour if Mirror modifier exists on mesh **Exact steps for others to reproduce the error** - Open the attached blend file [text paint.blend](https://archive.blender.org/developer/F5826991/text_paint.blend) - Press S key to sample the blue colour, and then paint in the red area, and vice versa - Notice it does not paint with the expected colour - "Apply" the Mirror modifier so it no longer exists in the modifier stack # Attempt sampling colours and painting as above, notice it now paints with the expected colour.

Clint Hobson commented

2018-12-05 04:13:33 +01:00

Added subscriber: @Domarius-1

YAFU commented

2018-12-05 04:44:13 +01:00

Added subscriber: @YAFU

YAFU commented

2018-12-05 04:44:13 +01:00

For developers: after reloading packed Untitled.png image from Image Texture node for it to be shown in 3D View, you take several color samples with "S" key in different parts from the front. You will notice that sometimes the color sampled is the front color (blue) and sometimes the one from the back (red)

Sebastian Parborg commented

2018-12-06 15:30:17 +01:00

Added subscriber: @ZedDB

Campbell Barton was assigned by Sebastian Parborg

2018-12-06 15:30:17 +01:00

Sebastian Parborg commented

2018-12-06 15:30:17 +01:00

I can confirm that this is bugged.
If I hold down the S key and hover my mouse over the blue side of the mesh (doesn't matter if it is on the mirrored part or not), I can see that the color picker flickers quickly between red and blue. If I apply the mirror modifier, the color seems to stay solid blue (as it should).

I can confirm that this is bugged. If I hold down the S key and hover my mouse over the blue side of the mesh (doesn't matter if it is on the mirrored part or not), I can see that the color picker flickers quickly between red and blue. If I apply the mirror modifier, the color seems to stay solid blue (as it should).

Clint Hobson commented

2018-12-06 23:32:15 +01:00

As a work around, I found that I can simply hide the mirror modifier while painting, rather than remove it altogether.

blender-admin commented

2019-03-18 10:01:59 +01:00

This issue was referenced by 794aef3f25

This issue was referenced by 794aef3f259ef0833e45d9cfd40ba6fe2b08b376

Campbell Barton commented

2019-03-18 10:18:07 +01:00

Changed status from 'Open' to: 'Resolved'

Campbell Barton closed this issue

2019-03-18 10:18:07 +01:00

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"Sample colour" picks incorrect colour if Mirror modifier exists on mesh #58763

Attempt sampling colours and painting as above, notice it now paints with the expected colour.