Christoph Hormann wrote:
> 
> George Pantazopoulos wrote:
Christoph, 
Thanks for stepping in with a complete description of the behavior. I would like
to see your explanation added to the documentation. To Warp's POV-Ray questions
and tips section or perhaps as a rework/addition to section 5.2.2.1.4 Resuming
Options.  
Bill P.
 
> - when rendering a subset of *columns* (+sc/+ec) POV-Ray generates a full
> width image and fills the not rendered columns with black pixels.  This
> should not be a problem for any image reading program no matter what file
> format is used.
> 
> - when rendering a subset of *rows* (+sr/+er) POV-Ray writes the full
> height into the image file header and only writed those lines into the
> image that are rendered.  This can cause problems with image reading
> programs that are not checking the file while reading and just read over
> the end.
> 
> - if POV-Ray wrote the actual height of the partial image into the image
> header there would be no way to continue the trace in a later run.
>

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