How do I correctly import .EXR HDRis?

Joost · Mar 2015

I'm trying to get my HDRIs working in UE4. When I import a .HDR file it correctly imports it as a "texture cube" asset. But it's capped at 512x512. When I import a .exr file it just imports it as a normal texture.

Maybe I'm missing something obvious here, don't have much experience with UE4.

Would really appreciate some help!

Amatobahn · Mar 2015

HDRI needs to be a 32-bit file.

Joost · Mar 2015

They are 32 bit .exr files.

Joost · Mar 2015

Image for clarification:

Obscura · Mar 2015

What happens if you change the compression setting to HDR?

Joost · Mar 2015

The compression setting is set to HDR I think, look at the image above.

Bek · Mar 2017

Just wanted to practice my necromancy + add for anyone else who finds this via google; the answer seems to be that to import your hdri as a texture cube, rather than a regular texture (which won't let you apply it to your sky light), the .exr can't have an alpha channel (and getting rid of an alpha channel from an exr via photoshop doesn't seem straightforward). Simple solution is to save it as a .hdr file. If you still need the format to be .exr I assume going exr -> hdr -> exr would work.

alnomany · Jul 2019

In my case, i cant use exr file in skylight, as cubemap.
and i saveas that exr to a hdr file in ps. and hdr works as usual.

How do I correctly import .EXR HDRis?

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