Hi and thanks for testing. This problem is specific for Mac M1. 
One version will trigger this issue:
nona: Unsupported framebuffer format in: 
/Users/_matthieu_/Sources/Hugin/2014/0/release/src/hugin_base/vigra_ext/ImageTransformsGPU.cpp:738

I really want to fix this and it would be very nice to attract someone here 
that might be able and reproduce the issue. I see a lot of knowledge and 
even people compiling on M1 machines so I am confident this might be 
possible to fix :).

tisdag 7 mars 2023 kl. 19:38:43 UTC+1 skrev T. Modes:

> Hi,
>
> [email protected] schrieb am Dienstag, 7. März 2023 um 18:31:24 UTC+1:
>
> Hi! Thanks a lot for getting back. Tested with correct prefix syntax but 
> issue persists.
>
> History. This gpu issue started on recent M1 machines. Early 13 inch 
> models did not have this issue. Could be memory related. I could try and 
> seek for error messages thorugh console again. I think I triggered an issue 
> around framebuffer testing one version a while back ago.
> So sorry for these vague descriptions but I will give more info when I 
> have more time.
>
>
> I tested under Windows with 2 different graphic cards. In all cases the 
> results are ok. 
> So it seems no general problem in align_image_stack. But without access to 
> such a failing machine or further informations it is very difficult to 
> debug.
>
>
>

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