HDR images are too dark / colors are way off

[ASOwnerYT]

System information:

• Windows OS version: 20H2
• ImageGlass version: 8.0.12.8

To Reproduce

Steps to reproduce the behavior:

1. Open any HDR image in both ImageGlass, and mostly any other image viewers (such as the Windows 10 default image viewer)
2. Compare the two, and in ImageGlass the image is way darker than it should

Actual behavior:

When I view an OpenEXR image in ImageGlass, the colors are way off, and it appears darker. This also happens when I convert the OpenEXR image to PNG using AConvert, so I think it is because it is an HDR image.

Expected behavior:

The image colors should look the same to when it is viewed in the Windows 'Photos' app.

Screenshots:

Additional context:

OpenEXR image file: https://mega.nz/file/7f5QBAjb#BIzLjO4ZbWsQRHbtTaLmvK4WS9O1JXffzjQWng_Xb-0

[robinfriedli]

I have the same problem with JXL files containing HDR content created by Mirillis Action: (of course the right side looks a bit off / washed out in an SDR screenshot, but it's closer to what it should look like).

Here's the jxl image: https://mega.nz/file/tXlkRJBb#PmEpeJwc3z9vHeBisy6f0OaMDDrh4T_HXAYBQWUsyyA Here's an SDR PNG of how it should look like: https://mega.nz/file/lHtHXAwD#z5G4PIw4cjKX1B15ITYzuTW2W95VoAJQ-gPVYkpXwuE

[pedrodeleo]

I'm having the exact same problem with EXR images, colors are way too dark! It's weird because it didn't use to be like that, ImageGlass was my favorite image viewer by far because of the EXR/HDR capabilities but now I can't use it anymore. Any chance to update this?

[d2phap]

@ASOwnerYT tested you EXR image with ImageGlass 9.0 beta 2, the color seems correct.

[d2phap]

@robinfriedli I open your JXL with GIMP 2.10.32 (revision 1) and ImageGlass 9.0 beta 2, both render the same. Can you try opening it in other viewers?

[pedrodeleo]

I just tested the 9.0 beta 2 and it looks like this problem is fixed!! The image sequence on the bottom still looks too dark but the main image looks accurate! Great job! (LEFT SIDE: ImageGlass 9.0 beta 2, RIGHT SIDE: DJV 2)

Happy to go back to my favorite image viewer :)

[d2phap]

Thanks @pedrodeleo!