Author Topic: Cannot Extract Red Channel from .EXR?  (Read 1383 times)

Cannot extract red channel data from .exr file using RGBA split. Is there an alternative approach?

Editor Version
2019.1.2 build 2391 commit 4d33d48b Release (2019-07-02)

Cooker Format Version
3.0.0 commit 0x00000000

Engine Version [Direct3D 10]
7.0.0 commit 0xe6ccd6ec (2019-07-02)

Windows 10 (64-bit)
AMD Threadripper 2950x
64Gb Ram
GeForce Gtx 1070
Last Edit: August 24, 2019, 03:21:05 am

Is this due to the high dynamic range of the file format, or is it possible to extract the Red channel information regardless?

Rgba-split works fine for me with exr's. Including hdr values.
What does output look like for you?
Esger van der Post.
Texturing addict.

Just black. The .exr file in question has displacement information in the R channel, black in G and B (see attached).


I've seen this as well ,  it only appears to affect single channel exr images.


You can run them through photoshop (simply duplicate the red channel data into the green and blue) but that rather defeats the object of using designer and leaves you vulnerable to photoshop knackering your colours.


That doesn't mean I don't think this is pretty serious issue - it makes processing quite a lot of data much more laborious than it should be.

Wow, it has been a *WHILE* since I posted about this issue. Glad there is someone out there that was able to sanity check my observation. Appreciate it :D
Last Edit: December 02, 2019, 11:17:27 pm