Hello Rafael.
I have already established that it is most certainly a regression in libgdiplus. Using an older version (2.10) with the current mono runtime by overriding LD_LIBRARY_PATH to the 2.10 libgdiplus binary brings a correct result. Kind regards, Benjamin Am 2015-06-09 12:42, schrieb Rafael Teixeira: > AFAIR libgdiplus delegates to libpng reading the bitmap, probably libpng is > returning something different from the usual on Debian unstable for your > image. Did you try with other images, or with a trunk/older version of > libpng? > > On Tue, Jun 9, 2015, 06:40 Benjamin Schieder <benja...@anderdonau.de> 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@flora:~/Downloads/PZ/MapMap]$ mcs --version > Mono C# compiler version 4.0.1.0 > [11:38:34][blindcoder@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 [1] > TLS: __thread > SIGSEGV: altstack > Notifications: epoll > Architecture: amd64 > Disabled: none > Misc: softdebug > LLVM: supported, not enabled. > GC: sgen > [11:38:37][blindcoder@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 [1] > 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 > [2] ? > > 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@lists.ximian.com >> Date: Tue, 9 Jun 2015 10:15:02 +0200 >> From: benja...@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 [3] >> >> Running this example on a current Debian Unstable results in this - bad >> - image: >> https://oc.anderdonau.de/index.php/s/AtVtba0tpSk4bn8 [4] >> >> Running the same code on an old Debian Squeeze (on armel) results in >> this - correct - image: >> https://oc.anderdonau.de/index.php/s/eqhmXh9qpBbg0WW [5] >> >> Can someone help me with this issue? >> >> >> Kind regards, >> Benjamin >> -- >> Jabber: blindco...@jabber.ccc.de >> Twitter: https://twitter.com/blind_coder [6] >> Web: http://www.benjamin-schieder.de/ [7] >> _______________________________________________ >> Mono-devel-list mailing list >> Mono-devel-list@lists.ximian.com >> http://lists.ximian.com/mailman/listinfo/mono-devel-list [8] > > Jabber: blindco...@jabber.ccc.de > Twitter: https://twitter.com/blind_coder [6] > Web: http://www.benjamin-schieder.de/ [7] > _______________________________________________ > Mono-devel-list mailing list > Mono-devel-list@lists.ximian.com > http://lists.ximian.com/mailman/listinfo/mono-devel-list [8] Jabber: blindco...@jabber.ccc.de Twitter: https://twitter.com/blind_coder [6] Web: http://www.benjamin-schieder.de/ [7] Links: ------ [1] http://www.mono-project.com [2] http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives [3] https://oc.anderdonau.de/index.php/s/VwTAlcjETG6j3XP [4] https://oc.anderdonau.de/index.php/s/AtVtba0tpSk4bn8 [5] https://oc.anderdonau.de/index.php/s/eqhmXh9qpBbg0WW [6] https://twitter.com/blind_coder [7] http://www.benjamin-schieder.de/ [8] http://lists.ximian.com/mailman/listinfo/mono-devel-list
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