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Old 01-07-2020, 04:34 AM   #1
juliansader
Human being with feelings
 
Join Date: Jul 2009
Posts: 3,307
Default macOS: StretchBlt with SRCCOPY_USEALPHACHAN does not apply alpha

On my OSX High Sierra system, StretchBlt with SRCCOPY_USEALPHACHAN works fine, and transparent graphics can be drawn on top of REAPER's windows, such as:




On some users' OSX El Capitan systems, however, the graphics are drawn fully opaque.


Last edited by juliansader; 01-10-2020 at 07:48 AM.
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