Float curve #98629
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Reference: blender/blender#98629
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.59
Blender Version
Broken: version: 3.1.2, branch: master, commit date: 2022-03-31 17:40, hash:
cc66d1020cWorked: (newest version of Blender that worked as expected)
Short description of error
[Float curve does not act as expected. Despite having clamped this values, there are still some below zero (as seen in displacement). RGB curve using same setup, does not have this issue ]
Exact steps for others to reproduce the error
1.Drop Float curve 2. Extend Horizontal 3. Uncheck "use clipping" and zoom out{F13135362}
2022-06-06 19-54-29.mp4
Added subscriber: @sniegockiszymon
Added subscriber: @mod_moder
Maybe you're still editing, but still:
Please use this button to fill in the details of your condition.
Describe your problem by removing the text in - [ ] (remove the brackets too)
Floatto Float curveYeah sorry, haven't noticed that accidental post. I've corrected already.
Changed status from 'Needs Triage' to: 'Needs User Info'
Your report says little. You can send the complete file or record the process. Since your pictures give only a part, and the description does not seem strange.
There are two pictures, first one using float curve, second one RGB curve. They supposed to give same outcome on displacement, but float curve acting strange giving me values below zero, it supposed to be clmaped as graph shows.
I've added video also
report nope 1-1-1.blend
Please send a file, I can't reproduce your problem in a controlled test
2022-06-06 21-11-22.mp4
I have recreated it in fresh file. It behaves the same.
blender_float_curve.blend
Changed status from 'Needs User Info' to: 'Needs Developer To Reproduce'
blender_float_curve.blend
2022-06-06 22-12-24.mp4
As a result, the difference was found.
Interpolation of values outside the range [0.0,1.0] is different. I have a suspicion that this is due to the specifics of the color format, but need comments from the developer
Yeah, but RGB curves acts correctly. Float curve is the broken one
Is it still playable?
This seems to have been fixed in 3.2 (between
b9123b806f&e2e4c1daaa).Will close as resolved (but of course feel free to comment again if issues persist in 3.2 onwards or fresh builds from https://builder.blender.org/download/daily/)