RGB Curve Node point order switching #70204
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Reference: studio/blender-studio#70204
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System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30
Blender Version
Broken: version: 2.81 (sub 12), branch: master, commit date: 2019-09-23 15:18, hash:
blender/blender@14acac0bb7Short description of error
In the RGB curves node it is possible to set multiple points to have the same x location. In that case Blender seems to decide which one is the first in the curve.
Every time the same value is used, Blender cycles through the points to decide which one comes first.
2019-09-24 14-49-11.mov
The current issue is that when rendering it seems to now also cycle between the points every time.
There is one of these instances in the Spring Splash Screen and Spring Benchmark render that result in her jacket turning pink every other time it is being rendered.
While this is also a mistake by the user, the order of the curve points that Blender decided on should not change every time it is being rendered.
Added subscriber: @JulienKaspar
Added subscribers: @Jeroen-Bakker, @brecht, @mano-wii
It involves the same area of the problem reported in blender/blender#67981
Therefore assigning to @Jeroen-Bakker
Cc @brecht
@JulienKaspar Can you retest, I am not able to reproduce this one anymore.
Added subscriber: @dfelinto
Changed status from 'Open' to: 'Archived'
More than a week without reply or activity. Due to the policy of the tracker archiving for until required info/data are provided.
@Jeroen-Bakker I fixed the files on the cloud since there were still people sharing the pink jacket spring renders ...
I can still reliably reproduce this bug. We can look at it once I'm back from CTN.
Changed status from 'Archived' to: 'Open'
I can confirm that the problem still persists.
To do this simply add an RGB Curves Node to the material;
Add 2 points;
and type 0.5 for the x coordinate of these 2 points.
Each time you update the coordinate of the upper point, the curve changes.
Argh... I am still not able to reproduce using master. Also with the steps mentioned the results are consistent on my machine...
I am running on Linux Ubuntu 18.04.4. Any confirm on any point gives the same result.
@mano-wii @Jeroen-Bakker
I also can't reproduce it anymore in the latest master, both manually or when rendering.
Changed status from 'Open' to: 'Archived'
Unable to reproduce it anymore. checked with @JulienKaspar he is ok to close it for now.