JXR HDR Support

Ask for help and post your question on how to use XnView Classic.

Moderators: XnTriq, xnview

Hrazmadul
Posts: 3
Joined: Fri Dec 10, 2021 12:29 pm

JXR HDR Support

Post by Hrazmadul »

I'm using the classic XnView version 2.50.3 (24 Nov 2021)

I love the program very much and use it a lot to browse my huge amount of totally unnecessary screenshots. But just recently I got myself an HDR monitor and started grabbing lots of screens from the games that support HDR. Nvidia's Shadowplay save these in JXR format, but they don't work at all in XnView. all the thumbnails are black and trying to view it results in a black image.

Programs like "HDR + WCG Image Viewer" can view them but the UI is horrible.
I still love to just pressing space to move the image list forward like XnView does.

My best guess is that something has changed in the JXR format that Nvidia uses or similar. I think the images are 32bits per pixel with alpha ie. 128bits.
Brion made a HDRFix which also contains a lot of samples.
https://github.com/brion/hdrfix/tree/main/samples

I can provide one myself from AC:Valhalla... *edit* nope can't attach .jxr to forum post, it isn't a valid file-extension and a zip was too large.
A friend lent me some space to host the image:
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.jxr (20,5 Mb)
Last edited by Hrazmadul on Mon Dec 13, 2021 11:08 pm, edited 2 times in total.
User avatar
xnview
Author of XnView
Posts: 36821
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: JXR HDR Support

Post by xnview »

Hrazmadul wrote: Fri Dec 10, 2021 12:56 pm I can provide one myself from AC:Valhalla... *edit* nope can't attach .jxr to forum post, it isn't a valid file-extension and a zip was too large.
A friend lent me some space to host the image:
https://aeh.metatem.net/Assassins%20Cre ... .36.10.jxr
Do you have the PNG version of this file? or screenshot?
Pierre.
Hrazmadul
Posts: 3
Joined: Fri Dec 10, 2021 12:29 pm

Re: JXR HDR Support

Post by Hrazmadul »

Sure I can attach a non HDR version as JPG.
The PNG had to be made with "HDR + WCG Image Viewer" and it went to 51Mb so I cant attach it here atm.
Photoshop can make a JPG and a TIFF of it but the TIFF is 84 Mb so I'll see if I can get my friend to host those later.
Hopefully I can attach the JPG at 5Mb.
Nope tried it 5Mb is to large for attachment..
I have to get back to you with links.

If I save it with HDR-WCG I get a smaller JPG(1Mb) and I am attaching it now. Though I wonder how much image data that vanishes through the save process. The strange cartoony effect on the trees is not there in the original image or at least not so visible.
The PSD looks as the real screenshot should.

I'm using the Microsoft JXR plugin to read the JXR into Photoshop and the image looks fine in PS with this.
https://www.microsoft.com/en-us/downloa ... x?id=52369

*edit*
Links (all of these are exported from photoshop):
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.jpg (5,75 Mb)
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.png (12,7 Mb)
(I think the TIFF and the EXR are true HDR still)
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.tif (84 Mb)
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.exr (63,5 Mb)
https://aeh.metatem.net/jxr/Assassins%2 ... .36.10.psd (126 Mb)
You do not have the required permissions to view the files attached to this post.
User avatar
xnview
Author of XnView
Posts: 36821
Joined: Mon Oct 13, 2003 7:31 am
Location: France

Re: JXR HDR Support

Post by xnview »

ok, 128bits jxr will be supported
Pierre.
Hrazmadul
Posts: 3
Joined: Fri Dec 10, 2021 12:29 pm

Re: JXR HDR Support

Post by Hrazmadul »

Thanks a lot! :D