Chromakey fix for pre-multiplied Alpha #643
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… Each channel must be updated, vs just the alpha value.
Codecov Report
@@ Coverage Diff @@
## develop #643 +/- ##
===========================================
+ Coverage 51.54% 52.64% +1.09%
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Files 151 130 -21
Lines 12228 10698 -1530
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- Hits 6303 5632 -671
+ Misses 5925 5066 -859
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Each channel must be updated, vs just the alpha value. This is a result of the alpha value already multiplied into the R,G,B, so this leaves behind darker pixels and artifacts, if we don't zero all these pixels out.