There's a bug I've never quite figured out with exporting transparent PNG on 
Mac. When we export a PNG, we take the OpenGL "frame buffer" and starting 
around OS 10.6, suddenly we'd get those weird artifacts.

If you don't mind having non-transparent backgrounds, I can make a Mac build of 
1.1.x that will also re-scale the window to 2x resolution when exporting. I did 
this last year for a holiday card project and it worked well, albeit with a 
slightly strange "jump" as the window grows and shrinks.

-Geoff

---
Prof. Geoffrey Hutchison
Department of Chemistry
University of Pittsburgh
tel: (412) 648-0492
email: geo...@pitt.edu
web: http://hutchison.chem.pitt.edu/

> On Dec 9, 2014, at 12:35 PM, Philip jakobsen <philipjakobs...@gmail.com> 
> wrote:
> 
> Hi
> 
> 2 things: I’m trying to export a scene in Avogadro as a png, but end up with 
> the following result:
> 
> <etoh2.png>
> 
> Which obviously isn’t quite what I wanted. Exporting as bmp and then 
> exporting that as png works, but that’s a workaround and the quality is not 
> as good as I’d like. I’m using the latest Avogadro (version 1.1.1 git 
> revision c1fcc5b) and OS X 10.10.1. 
> 
> Second thing: is it possible to control the size of the exported image? This 
> is for an academic paper and I’d like all graphics to be quite large (around 
> 2000 pixels high). Is this possible without using POV-ray? I’d like to avoid 
> that due to the light looking rather unatural and “staged”. Ideally all light 
> is equally spread across the scene. 
> 
> Exporting as vectorgraphics crashes Avogadro, no matter what format (eps, pdf 
> or svg). Attached is the crashlog.
> 
> <avogadro_crash.log>
> 
> Thanks in advance,
> 
> Philip------------------------------------------------------------------------------
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