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WDL/swell: Linux: BitBlt and StretchBlt: SRCCOPY_USEALPHACHAN not working [FIXED!]
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04-04-2019, 10:02 AM
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juliansader
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Join Date: Jul 2009
Posts: 3,714
WDL/swell: Linux: BitBlt and StretchBlt: SRCCOPY_USEALPHACHAN not working [FIXED!]
Per-pixel alpha blending, using mode=SRCCOPY_USEALPHACHAN, works fine on macOS, similar to the AlphaBlend function on Win32, but doesn't work on Linux.
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Last edited by juliansader; 04-08-2019 at
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04-05-2019, 08:47 PM
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Justin
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Moving to the WDL forum. I suppose this would be easy enough to implement...
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01-10-2020, 03:22 AM
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juliansader
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The same problem seems to have reared its head on some -- but not all -- macOS computers too:
macOS: StretchBlt with SRCCOPY_USEALPHACHAN does not apply alpha
.
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