Texture painting fails with different float image working space #39704
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Reference: blender/blender#39704
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System Information
Ubuntu 13.10 64 bit, Geforce 540M GT, 8 GB RAM
Blender Version
5d79c26
Short description of error
Changing the working space of float images makes painting dysfunctional
Exact steps for others to reproduce the error
This is because we do not transform the brush color (which is hardcoded converted to scene linear) to the image color space, or vice versa.
Correct blending though is only possible in linear spaces, and since image space could be arbitrary, solution should be to convert such an image to a linear representation probably.
Or we could assume a linear space and transform brush color to image space.
This begs for trouble though.
Changed status to: 'Open'
Added subscriber: @Psy-Fi
You can see other errors with this file. For instance try to sample the image with eyedropper (E over color).
Essentially, we assume that gamma properties are in display space always. This is not a valid assumption if user has a calibrated display. We will often skip color correction altogether while colors need to be converted to the calibrated display. Color wheel sure suffers from this and I will tackle it next week.
This issue was referenced by blender/blender-addons-contrib@e6ff0ec73d
This issue was referenced by
e6ff0ec73d
Changed status from 'Open' to: 'Resolved'
Closed by commit
e6ff0ec73d
.