[Mono-winforms-list] DrawImage alpha blend broken in libgdiplus

Alex Shulgin alexander.shulgin at yessoftware.com
Thu Apr 9 11:22:28 EDT 2009

Sebastien Pouliot wrote:
> Hello Alex,
> The patch looks good. However this kind of fix has been known to cause
> regression in the past. 
> Could you supply unit tests that ensure that the image can be saved and
> reloaded correctly ? (modifying your previous sample code should be
> easy).
> With this (and if all existing tests pass successfully) I'll be able to
> commit your patch.

Hi Sebastien,

Thanks for your reply!

I'm trying to run the tests in mcs/class/System.Drawing/Test under 
MonoDevelop and I have 144 failing tests (out of 1377) to begin with...

Is this normal situation or my system is severely broken?

I'm on x86 Ubuntu 8.10 with the following packages freshly built from svn:


The number of failing tests doesn't change if I apply my patch to 
libgdiplus, though.

How do I proceed?


More information about the Mono-winforms-list mailing list