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How can I optimize the quality of DDS cubemap?

Hello there!

I imported my 4k DDS cubemap (6*4K). It takes a long time to import, circa 20/30 min. (Known issue ). It takes that long because it is generating mipmaps which destroys the quality of the cubemao.

With the mipmaps on: alt text

Mipmaps turned of: alt text

Cubemap without mipmaps: alt text

Cubemap in material instance editor after mips are turned of: alt text

Cubemap material editor. NOTE: The preview looks beautifull: alt text

Then i have the original file. and the export settings. I will show them in a post below (due to file limit in post)

Product Version: UE 4.8
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asked Dec 11 '15 at 01:27 PM in Rendering

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avatar image ERuts Dec 11 '15 at 01:29 PM

Original file preview: alt text

NVIDIA export settings: alt text

Here the bleuprint of the skysphere with all modified options: alt text

I lowered the quality of all the images due to the size of this thread.

I really need help to get the perfect quality of my cubemaps.

Thanks in advance and kind regards.


avatar image devel.bmad Mar 07 '16 at 05:19 PM

Did you manage to fix your issue? In 4.10 it should be possible to disable mip mapping.

avatar image ERuts Mar 08 '16 at 04:09 PM

Sort of. It is still not optimal but there are some workarrounds that improves the quality.

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