RESOLVED FIXED181317
WebGL alpha:false seems to be compositied incorrectly 
https://bugs.webkit.org/show_bug.cgi?id=181317
Summary WebGL alpha:false seems to be compositied incorrectly
Gregg Tavares
Reported 2018-01-04 21:24:32 PST
Safari 11.0.2 and 11.1 Technology Preview v48 seems to composite WebGL canvases incorrectly if alpha:false Here's an example https://jsfiddle.net/greggman/2rk7pmx3/ In Safari all 5 canvases come out different colors but they should all be the same color. See Firefox and Chrome
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Radar WebKit Bug Importer
Comment 1 2018-01-05 20:31:36 PST
<rdar://problem/36333017>
Kirill S. Dmitrenko
Comment 2 2018-01-10 00:33:06 PST
Probably related to https://bugs.webkit.org/show_bug.cgi?id=181007.
Gregg Tavares
Comment 3 2019-06-10 23:12:31 PDT
Tested on MacOS 10.14.5 and iOS 12.3.1. Seems fixed
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