[vtkusers] OS X Python Carbon Valid Pixel Format??

[Karl Garsha]

         Thanks Chris,
I'm using a Powerbook G3 Wallstreet (1998) with a Sonnet Cresendo 500Mhz 
G4 proc upgrade.  The Powerbook has an ATI RageLTPro chipset for 
graphics (4mb VRAM).  OS X historically did not support OpenGL (or 
Rave)  hardware acceleration for this graphics chip, although OS 10.2.4 
(which I'm running) supposedly includes drivers for this graphics chip.  
    The specific error I'm getting follows:  
 >>> iren.Initialize()
ERROR: In 
/Volumes/MANGO_STORAGE/vtk/VTK-4.2.1/Rendering/vtkCarbonRenderWindow.cxx, 
line 731
vtkCarbonRenderWindow (0x13c1680): Could not find valid pixel format

Thanks for your insight.
-Karl

Chris Scharver wrote:

>Currently, there's only a default pixel format specified. If a hardware-accelerated format for that pixel format is not available, the request fails. You mentioned that you're running on an older PowerBook, so that's likely what is happening. Currently, VTK makes one request and reports on either failure or success.
>
>Requesting the pixel format should be able to choose the "best available" pixel format. I'll have to check the Carbon code to see if it does that. There isn't an API available for changing the pixel format requested by VTK
>
>Which PowerBook are you using? If there a graphics card installed at all?
>
>Chris
>--
>Chris Scharver
>Electronic Visualization Laboratory
>The University of Illinois at Chicago
>Ph: 312-996-3002   FAX: 312-413-7585
><http://www.evl.uic.edu/scharver/>
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-- 
Karl Garsha
Light Microscopy Specialist
Imaging Technology Group
Beckman Institute for Advanced Science and Technology
University of Illinois at Urbana-Champaign
405 North Mathews Avenue
Urbana, IL 61801
Office: B650J
Phone: 217.244.6292
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