Greetings,

Le 22/01/2011 12:19, Mr nous fit lire :
> Hi,
> We are trying to implement partial output (border render) into blender's
> exporter.
> What happens is that we got it working except opening the output image crashes
> blender. I suppose it's due to this fact mentioned in povray doc:
> 
> """
> When rendering a subset of *rows* (+sr/+er) POV-Ray writes the full height into
> the image file header and only writes 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.
> """
> 
> I think Continue trace is one of Povray's best features, but I wouldn't mind to
> disable it in the exporter for when we do border render, because the idea of
> border render is to work faster, not render overnight and days. My request is
> could the file simply be filled with black transparent pixels outside of the
> rendered area, maybe when an optional keyword is added?
> 
> Blender developers seem to be fine with how image reading is happening now on
> blender's side.

What are you trying to achieve ?

Which version are you using ?

testing with 3.7RC3 +sr & +er, with default to png file, seems fine: a
complete image is generated, with black for the unrendered parts.

If blender is calling povray, it surely know the +sr/+er/+sc/+ec, so can
read the relevant rectangle only.

Why did you mention Continue ?

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