How to generate .exr file from Unity

Archived Forums Questions & Answers
1

Hi all,

Is there a way to generate a .exr file from Unity?

thanks.

3 Answers

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http://wiki.unity3d.com/index.php/MiniEXR

Correct answer, Upvoted.

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This sort-of worked. I used it to save out an .exr file over the old Lightmap .exr file but..... the resulting file was upside down, and of different brightness. There are no options for Gamma control, so not sure what to do.

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3

You mean baking a lightmap ?
Just use the baking tools from Unity include in your software.

I wanna do some modifications on the lightmap textures the lightmapping tools generated and write it back to file(overwrite the original .exr lightmap file).Is there a way to do that?

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delete the old file and build it again

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you can rebuild some part of your lightmap if you use Unity 4.X. Or use an external tools as photoshop or something like this :)

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in other words, i wanna create a brand new .exr format file, how to do that?

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Same here. I'm using Lightmap Extended and IBL. For IBL I need a HDR or EXR file. I'm projecting the environment into a cubemap, then process it to get the typical HDR cross layout, and finally I need to create an EXR file to pass it to Lightmap Extended. I know I can save just a PNG file and then goto Photoshop, or the free tool Picturenaut to convert it to EXR but it woulb be great to reduce the steps in the workflow. I'll have to do this manytimes.

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2

I think u mean .exe bcoz .exr is a bitmap extension

Goto File–>Build Settings–>PC,Mac,Linux standalone–>Click Build

No, he means EXR!

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