HDR output.

For all the users of Twilight Render (V1 & V2), to ask questions and get started
Chris
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Re: HDR output.

Post by Chris » Wed Aug 14, 2019 11:10 pm

Can you post one of the images that is acting that way?

pbacot
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Re: HDR output.

Post by pbacot » Wed Aug 14, 2019 11:47 pm

I downloaded an hdr and a exr from that site and I can see the advantage in GIMP. I can adjust exposure and other color enhancements easily and keep a crisp image without bad side effects. attached is an image from Twilight that shows black in GIMP.
Attachments
test a2.hdr.zip
(76.35 KiB) Downloaded 4 times

Fletch
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Re: HDR output.

Post by Fletch » Thu Aug 15, 2019 2:02 pm

It looks fine when opened in Photoshop.
Attachments
HDR-edit.jpg
HDR-edit.jpg (148.01 KiB) Viewed 25 times

Chris
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Re: HDR output.

Post by Chris » Thu Aug 15, 2019 2:41 pm

The image works in Picturnaut (an HDR image viewer) and in HDRShop. But you are right, it does open black in Gimp. Which is weird because when I render a simple image, it opens fine in Gimp.

When I resave the image in HDRShop (with no editing, just resave), it opens fine in Gimp. So there is definitely a conflict of some kind between Twilight Render and Gimp. I have no idea where the source of the problem lies however. This wouldn't be the first time something didn't act correctly in Gimp. At the same time, we are using the FreeImage library and there could certainly be an incorrect setting somewhere.

pbacot
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Re: HDR output.

Post by pbacot » Thu Aug 15, 2019 6:12 pm

I'll see if I can find another editor and if that makes things work more nicely. I think there is an advantage in PP here. I like the control I have seen with other HDR in GIMP. In addition, I can experiment with compositing different exposures from Twilight. Thanks for checking this out!

pbacot
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Re: HDR output.

Post by pbacot » Sat Aug 17, 2019 5:25 pm

I found the same thing in Photomatix Pro. Open and save, and it can then open in GIMP.

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