Thanks for posting the PTO. I also got a black screen from it. The problem 
is that the visible content is outside of the viewing area. If you zoom out 
a good bit or start lux with --hfov_view=90, you'll see the images (which 
have quite small hfov of 14 degrees) near the top of the view. The pitch 
values in your PTO are larger than the hfov (17.4024521555217), and so the 
visible content is placed in an area which is not inside the viewing area.
I can see how this is confusing - maybe I should add code to center the 
view to a point somewhere inside the collection of images to avoid showing 
a blank screen.
Thanks for reporting back!

On Monday, April 22, 2024 at 8:33:39 AM UTC+2 GnomeNomad wrote:

> On 4/21/24 19:29, 'kfj' via hugin and other free panoramic software wrote:
>
>
>
> On Sunday, April 21, 2024 at 9:26:56 PM UTC+2 GnomeNomad wrote:
>
> Thanks, always good to have an improved GUI.
>
> I ran the appimage from the command line, it gave me a window to open 
> files. I went to open a PTO file, and got a blank black screen. Nothing 
> happened. Nothing displayed. When I pressed Escape, the window blank 
> display went away and I saw this in the command line window:
>
> OpenImageIO exited with a pending error message that was never
> retrieved via OIIO::geterror(). This was the error message:
> OpenImageIO could not find a format reader for 
> "/home/david/data/MyPhotos/Rabbit Island Vertical 
> Pano/RabbitIslandVerticalPano-2013092220130922.pto". Is it a file format 
> that OpenImageIO doesn't know about?
>
> So the new Lux can't open PTO files anymore?
>
> It should. The error message you get is nothing to worry about - I pass 
> every file to OIIO first to see if it can open it, and when it fails it 
> saves this error message which is never retrieved and displayed at program 
> exit. Maybe I should clean up better before terminating lux - this is 
> misleading behaviour. Thanks for pointing it out!
>
> Thanks.
>
> Considering the failure to open your PTO, I wonder: do the images have an 
> alpha channel? 
>
> No, the source images are JPGs and don't support transparency/alpha 
> channel.
>
> I checked the PTO display, and I saw there is an issue with panoramas with 
> images with alpha channel. Most embarrassing - looks like I have a bug to 
> fix. Did you try other PTOs? 
>
> I checked a version of the PTO that uses the same images. That rendered 
> fine. It was created in 2021 using Hugin.
>
> The problematic PTO file was created in 2013 using Hugin. Hugin doesn't 
> complain about either of them.
>
> Maybe you can post the PTO file, then I can see if I can reproduce your 
> problem. This would help me fix the bug. 
>
> Attaching the old problematic one 
> (RabbitIslandVerticalPano-2013092220130922.pto) and the newer 
> non-problematic one (P1000364-P1000361.pto).
>
> I don't know if the list will let them through.
>

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  • [hugin-ptx] lu... 'kfj' via hugin and other free panoramic software
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