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HDR ASTC for reflections

Discussion in 'General Graphics' started by Cerberus_team, Jun 15, 2020.

  1. Cerberus_team

    Cerberus_team

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    Can we use ASTC HDR 6x6 block for reflections?

    Everytime i compress an EXR with convolution type to Specular reflections the cubemap ends up all washed out. And the sRGB checkbox doesn't seem to do anything.

    If the convolution type is set to none and i use the cubemap has a skybox everything looks fine.

    Is this intended or is it a bug?
     
    Cerberus_team, Jun 15, 2020
    #1

  2. florianpenzkofer

    florianpenzkofer

    Unity Technologies

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    The format for reflection probes depends on “Lightmap Encoding” dropdown in PlayerSettings.
    You can also use platform override in TextureImporter. The HDR encoding is implicitly changed with the override format.
     
    florianpenzkofer, Jun 17, 2020
    #2

  3. Cerberus_team

    Cerberus_team

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    I know, but what i am saying is the EXR don't look the same with convolution type set to specular reflections.

    If convolution is set to none you get the same colorful image, but if you set it to specular reflections it doesn't look the same.
    ASTC HDR.png

    Lightmap Encoding is already set to High Quality, the sRGB flag doesn't do anything either.
     
    Cerberus_team, Jun 17, 2020
    #3

  4. florianpenzkofer

    florianpenzkofer

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    This looks like a bug. Can you please report one? The results should look pretty much identical for RGBA Half, ASTC HDR, BC6H, RGB9e5.
     
    florianpenzkofer, Jun 17, 2020
    #4

  5. Cerberus_team

    Cerberus_team

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    Done
     
    Cerberus_team, Jun 17, 2020
    #5

  6. florianpenzkofer

    florianpenzkofer

    Unity Technologies

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    florianpenzkofer, Jun 17, 2020
    #6

  7. Cerberus_team

    Cerberus_team

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    I wasn't sure so i entered them both, i was to lazy for repro project i ll make sure to had one next time.
     
    Cerberus_team, Jun 17, 2020
    #7

  8. alexvector

    alexvector

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    I just experienced the same issue with our ReflectionProbes in our project. When we set the player settings to use high quality lightmap encoding, ReflectionProbes end up using ASTC HDR and the result is washed out.

    Does anybody know a workaround for this? (apart from reverting lighmap encoding to normal)

    Manually changing the cubemap texture format to a non HDR format after the lightmap have been calculated seems to work. But of course this needs to be done every time we recompute the lighting so I would need to script this...
     
    alexvector, Jul 28, 2020
    #8

  9. florianpenzkofer

    florianpenzkofer

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    The fix for this will be in Unity 2020.1.1 and 2019.4.6
     
    florianpenzkofer, Jul 29, 2020
    #9
    alexvector likes this.

  10. florianpenzkofer

    florianpenzkofer

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    Our QA found that the issue is still reproducible in 2020.1.1 pre-release build that has the fix. So far we have not figured out why that is the case and I cannot reproduce it. So there is a chance that this will *not* be fixed in 2020.1.1.
     
    florianpenzkofer, Jul 31, 2020
    #10

  11. Cerberus_team

    Cerberus_team

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    Should be fixed in 2019.4.6f1, from the release notes:
    • Graphics: Fixed an incorrect cubemap convolution of ASTC HDR cubemaps. (1256696)
     
    Cerberus_team, Aug 5, 2020
    #11