v7 CopyOpacity

[snibgo]

In v7.0.2-5 on Windows 8.1, "-compose CopyOpacity -composite" ignores the opacity of the Src image, and performs as if alpha was off.

Code: Select all

%IMG7%magick xc:rgb(22%%,33%%,44%%) x1.png

%IMG7%magick xc:rgba(10%%,20%%,30%%,0.7) x2.png

%IMG7%magick x1.png x2.png -compose CopyOpacity -composite  txt:

0,0: (14418,21627,28835,12187)  #3852547B70A32F9B  srgba(22%,33%,44%,0.185962) <-- Wrong

v6.9.5.3 gives the correct result:

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%IM%convert x1.png x2.png -compose CopyOpacity -composite  txt:

0,0: (14418,21627,28835,45875)  #3852547B70A3B333  srgba(22%,33%,44%,0.700008)

[magick]

Thanks for the problem report. We can reproduce it and will have a patch to fix it in GIT master branch @ https://github.com/ImageMagick/ImageMagick later today. The patch will be available in the beta releases of ImageMagick @ http://www.imagemagick.org/download/beta/ by sometime tomorrow.