[Mono-dev] Problem with PNG transparancy on current Debian Unstable

[Andres G. Aragoneses]

You could check what version of 
libgdiplus(https://github.com/mono/libgdiplus) did Debian Squeeze 
include, and try to run a custom new mono built from sources, with an 
older libgdiplus, to confirm that it is a libgdiplus regression. If it 
is, then after that you could try to bisect the commit that caused it.

On 09/06/15 11:40, Benjamin Schieder wrote:
> Hello Alex.
>
> I have followed those instructions and done a dist-upgrade, but after
> re-compiling with mcs the problem persists unchanged. I have the
> following versions now:
>
> [11:38:29][blindcoder at flora:~/Downloads/PZ/MapMap]$ mcs --version
> Mono C# compiler version 4.0.1.0
> [11:38:34][blindcoder at flora:~/Downloads/PZ/MapMap]$ mono --version
> Mono JIT compiler version 4.0.1 (tarball Thu May 28 09:08:28 UTC 2015)
> Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors.
> www.mono-project.com
>      TLS:           __thread
>      SIGSEGV:       altstack
>      Notifications: epoll
>      Architecture:  amd64
>      Disabled:      none
>      Misc:          softdebug
>      LLVM:          supported, not enabled.
>      GC:            sgen
> [11:38:37][blindcoder at flora:~/Downloads/PZ/MapMap]$ cli --version
> Mono JIT compiler version 4.0.1 (tarball Thu May 28 09:08:28 UTC 2015)
> Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors.
> www.mono-project.com
>      TLS:           __thread
>      SIGSEGV:       altstack
>      Notifications: epoll
>      Architecture:  amd64
>      Disabled:      none
>      Misc:          softdebug
>      LLVM:          supported, not enabled.
>      GC:            sgen
>
> Kind regards,
> Benjamin
>
> Am 2015-06-09 11:07, schrieb Alexander Köplinger:
>
>> It works fine here with latest Mono 4.0.1.44 on Ubuntu. Can you try
>> upgrading to latest Mono from Xamarin by following
>> http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives ?
>>
>> I suspect this has something to do with libgdiplus (the native library
>> most of the System.Drawing code calls into).
>>
>> -- Alex
>>
>> > To: mono-devel-list at lists.ximian.com
>> > Date: Tue, 9 Jun 2015 10:15:02 +0200
>> > From: benjamin at anderdonau.de
>> > Subject: [Mono-dev] Problem with PNG transparancy on current Debian
>> Unstable
>> >
>> > Hello.
>> >
>> > I have a problem with PNG transparancy in mono on current Debian
>> > Unstable.
>> > I created a small example (4 kB download) with minimal code and two
>> > example images:
>> > https://oc.anderdonau.de/index.php/s/VwTAlcjETG6j3XP
>> >
>> > Running this example on a current Debian Unstable results in this - bad
>> > - image:
>> > https://oc.anderdonau.de/index.php/s/AtVtba0tpSk4bn8
>> >
>> > Running the same code on an old Debian Squeeze (on armel) results in
>> > this - correct - image:
>> > https://oc.anderdonau.de/index.php/s/eqhmXh9qpBbg0WW
>> >
>> > Can someone help me with this issue?
>> >
>> >
>> > Kind regards,
>> > Benjamin
>> > --
>> > Jabber: blindcoder at jabber.ccc.de
>> > Twitter: https://twitter.com/blind_coder
>> > Web: http://www.benjamin-schieder.de/
>> > _______________________________________________
>> > Mono-devel-list mailing list
>> > Mono-devel-list at lists.ximian.com
>> > http://lists.ximian.com/mailman/listinfo/mono-devel-list
>
> Jabber: blindcoder at jabber.ccc.de <mailto:blindcoder at jabber.ccc.de>
> Twitter: https://twitter.com/blind_coder
> Web: http://www.benjamin-schieder.de/
>
>
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