Re: GEGL ops: full-image processing (ignorance of ROI?)

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On Fri, 19 Feb 2010 21:24:57 +0300
Eugene Zagidullin <e.asphyx@xxxxxxxxx> wrote:

> Yes, it's just what I mean. But this decomposition is a very
> CPU-intensive operation. Is there a way to process whole image only
> once, store output in a kind of cache and later update requested
> region with cached data? Performing decomposition again and again
> until whole image will be covered with ROIs and thus cached is waste
> of time.

I ran into the same problem with gegl:openraw-load. If get_bounding_box
and importantly get_cached_region both return the entire image, then
GEGL will submit one process request for the entire image and cache the
result.

I'm using this trick in a couple of ops currently, and while it
doesn't appear to be explicitly documented anywhere, it always works.
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