[Mono-bugs] [Bug 529887] Graphics.DrawImage - wrong drawing a part of image with scaling

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http://bugzilla.novell.com/show_bug.cgi?id=529887

http://bugzilla.novell.com/show_bug.cgi?id=529887#c3


--- Comment #3 from Dmitry Ulybin <dima at dimoks.ru> 2010-01-22 04:00:20 UTC ---
(In reply to comment #1)
> Hi, I voted this bug as critical, because it's a showstopper for my app! Hope
> it will be fixed soon. Thanks!

As a "way to resolve" this bug:
1. Make a copy of the interesting part of the large image in to new image
without scaling (size of the new image = size of the interesting part)
2. Draw up the new image with scaling

I'm using this way successfully. Sometimes there are some artifacts still
happen, but they are not critical for me. And I'm not sure where is the source:
DrawImage or 15-bit color depth mode. I'm working with 32bpp images which
contain colors with alpha both < 255 and 255. I didn't check another images.

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