I also suggest to use the globaltonemap module as a guiding example.
Please beware that the current implementation has an issue if the
preview pixelpipe runs slower than the full (center) one - a case that
frequently happens when darktable runs with OpenCL support.
To address this issue there is currently some code in PR1441 which is
currently in review. As soon as it gets merged I suggest that you apply
the same principle in your code.
Ulrich
Am 17.02.2017 um 14:46 schrieb Heiko Bauke:
thanks for your hint. I also had a look at other modules and found that
the globaltonemap module does in the case of the Drago algorithm a very
similar kind of calculation as I have to implement. This will serve as
a useful guideline.
Cheers,
Heiko
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