[vtk-developers] Rendering bugs on Mac OSX when using vtk with gtk

[Valerie Coffman]

Has anybody had a chance to look at this?  This is a very serious bug 
for us as it makes our software unusable on the latest Mac OS.

I filed a bug report with apple weeks ago, but have not heard anything.  
It's likely that they just think it is a bug in VTK.



Valerie Coffman wrote:
> Dear VTK Developers,
>
> I posted this to the vtkusers mailing list, but got no responses.  I 
> suppose this list is more appropriate, so I'm hoping someone here is 
> able to help.
>
> After the latest Mac OSX update, I noticed a bug with rendering vtk data 
> embedded in gtk windows.  If I try to render a vtkVolume and a vtkActor, 
> the vtkVolume is not displayed and the vtkActor is displayed 
> incorrectly.  For instance, a cone is missing its base.  This does not 
> happen if the vtk window is not embedded in a gtk window.  It also 
> doesn't happen when using the same versions of vtk and gtk on a under 
> Linux with a Linux display.  It does happen if I ssh to a Linux box and 
> display on the Mac.  (I was unable to check whether the bug appeared 
> when running on a Mac but displaying in Linux as this resulted in a bus 
> error.)
>
> I am not using gtkglext.  I posted a while back about how to put vtk and 
> gtk together without gtkglext or gtkglarea: 
> http://www.vtk.org/pipermail/vtkusers/2008-April/094892.html (see the 
> script Wrapping/Python/vtk/gtk/noglext.py in the source for vtk 5.4).  
> In fact, this bug appeared earlier when using gtkglext and went away 
> when I implemented the fix described in the above link.  Now it has 
> resurfaced.
>
> Here are the details of the latest Mac updates
>
> 2009-06-09 13:14:35 -0400: Installed "Digital Camera Raw Compatibility 
> Update" (2.6)
> 2009-06-09 13:14:50 -0400: Installed "AirPort Utility Software Update 
> 2009-002" (5.4.2)
> 2009-06-09 13:15:07 -0400: Installed "iWork '09 Update 2" (9.0.2)
> 2009-06-09 13:15:49 -0400: Installed "iTunes" (8.2.0)
> 2009-06-09 13:15:53 -0400: Installed "iLife Support" (9.0.3)
> 2009-06-09 13:16:07 -0400: Installed "iDVD Update" (7.0.4)
> 2009-06-09 13:18:54 -0400: Installed "Mac OS X Update" (10.5.7)
> 2009-06-09 13:19:26 -0400: Installed "QuickTime" (7.6.2)
>
> The relevant version info is:
> VTK 5.0.4.3 (fink package vtk-py25) (I've also tried VTK 5.4.2 and the 
> result is the same)
> GTK 2.16.2-2 (also installed with fink)
> X11 2.3.3.2 (from http://xquartz.macosforge.org/)
> pygtk 2.12.1-5 (also from fink)
> Python 2.5 (fink package number 1:2.5.4-1)
>
> I've posted test scripts, data, and pictures here: 
> http://www.ctcms.nist.gov/oof/renderingbug/
>
> There is another discussion of this bug here: 
> http://lists.macosforge.org/pipermail/xquartz-dev/2009-June/002367.html   
>
> Another thing I noticed is that if I try to print out the 
> vtkRenderWindow, the colormap is set to 0 for the script that uses gtk, 
> but seems to be set to a real value for the script that doesn't use 
> gtk.  I don't know if that is the expected behavior or not.
>
> Any insights would be greatly appreciated!
>
> Thanks
> Valerie Coffman
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