[visit-developers] Feature request: Transparent image output (with alpha channel) when saving image

Chourasia, Amit amit at sdsc.edu
Sat Jul 11 16:34:41 EDT 2015


It would be great if VisIt could output transparent images with alpha channel. Please consider supporting transparent output in PNG format instead of adding  support to all formats like tiff, etc.

While the python difference workaround<http://www.visitusers.org/index.php?title=Extracting_alpha> could be useful sometimes. It is not really possible to incur the cost of rendering twice just for the sake of generating a transparent image. This is especially true with raycasting or anything with larger dataset, which have expensive render times to begin with.


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