Black screen with large images #6

I've tested this extension with a couple of smaller and larger images on Pi3B. I set the GPU memory split to 512MB as I know this might be an issue. I've also tried 1024MB but then the Pi didn't boot anymore or at least was insanely slow while booting.

Okay

https://openframe.io/artwork/56e5b16ba6b560d606184640
Source: http://inconvergent.net/img/openframe/landscape-1.png
1080 x 1920

https://openframe.io/artwork/5c2fcc2da38167076035b958
Source: https://i.imgur.com/CEdQIOH.jpg
1920 x 1200

https://openframe.io/artwork/5c4b8b5ea38167076035b9db
Source: http://thisisnotanumber.org/choL.jpg
1920 x 1317

Not working: Black screen

https://openframe.io/artwork/5d9be49aa38167076035be3c
Source: https://danelliottphotography.com/wp-content/uploads/2019/10/brandon-golf-courseb1.jpg
3840 × 1729

https://openframe.io/artwork/5d9b6d6ea38167076035be33
Source: https://danelliottphotography.com/wp-content/uploads/2019/10/devilstower.jpg
3840 × 2560

Alternatives

I've successfully opened the larger images on the same Pi using

• Chromium
• VLC

Could these be alternatives for glslViewer?

I've read about potential other alternatives, untested:

• https://github.com/HaarigerHarald/omxiv
• image magick display
• gifview
• xnview.uci