[Mono-bugs] [Bug 363431] New: Bitmap (... scan0) constructor reads Format24bppRgb data as 32-bit RGB

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=363431


           Summary: Bitmap (... scan0) constructor reads Format24bppRgb data
                    as 32-bit RGB
           Product: Mono: Class Libraries
           Version: unspecified
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: libgdiplus
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: jan.oravec at 6com.sk
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


When Bitmap constructor with Scan0 IntPtr input gets Format24bppRgb data, these
data are manipulated as 32-bit RGB.

I have checked libgdiplus sources and from comments I see that Cairo doesn't
understand 24-bit RGB. I guess that GdipCreateBitmapFromScan0 should fail on
24-bit RGB.

Also, I think that PixelFormat32bppRGB should be mapped to CAIRO_FORMAT_RGB24
(which is 32-bit) instead of CAIRO_FORMAT_ARGB32.


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