Color Mix "Add" mode is broken in Cycles #48587
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Reference: blender/blender#48587
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System Information
GNU/Linux 64bit (Intel CPU/nvidia GPU) / Fedora 23
Blender Version
Broken: 2.77
17fbce9(git master)Worked: 2.77a release
Short description of error
Using a Color Mix node with the first color being white and the second color black (zero on all channels) results in a Black output in "Add" mode even though 0 + 1 should be 1 not zero . my guess is that Add is doing a Mix by accident.
Exact steps for others to reproduce the error
Changed status to: 'Open'
Added subscriber: @BassamKurdali
Added subscriber: @ThomasDinges
Added subscriber: @Ace_Dragon
In addition, from my own tests, the add mode for Color Mix seems to be broken only for the case when it gets fed a value of 1 (other values like 0.9 seem to work as intended).
that seems to be the case, at least in the example file. Well spotted (and thanks Thomas for adding Cycles project... I should have done so)
This issue was referenced by
234801c8dcChanged status from 'Open' to: 'Resolved'
Thanks Dingto! confirming 'FIXED' both on the test .blend I uploaded and on the original tube files that exposed the bug in the first place. Great work!
This issue was referenced by blender/cycles@75436eacdc