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GGX

Discussion in '5.3 Beta' started by Mark_29, Oct 13, 2015.

  1. Mark_29

    Mark_29

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    Hi

    I watched the unite video and saw that it mentioned unity was moving to GGX for PBR and are working with allegorithmic to make sure painter works seamlessly in 5.3. I never seen any mention of this in the notes. Has this been added? I was hoping to test.

    Thanks

    M
     
    Mark_29, Oct 13, 2015
    #1

  2. Zuntatos

    Zuntatos

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    Random note; GGX was already available by altering the .cginc's used. I believe the UnityPBSLighting.cginc has a define that switches to GGX.
     
    Zuntatos, Oct 13, 2015
    #2

  3. Devil_Inside

    Devil_Inside

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    I'd also like to know if GGX will work on mobile
     
    Devil_Inside, Oct 13, 2015
    #3

  4. Lex4art

    Lex4art

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    Lex4art, Oct 20, 2015
    #4
    Mihai77 likes this.

  5. Aras

    Aras

    Unity Technologies

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    GGX and some other improvements should be in 5.3 beta 5. Notable/relevant:
    • Specular switched to GGX (was normalized Blinn-Phong before)
    • Smoothness curve matches other tools like Substance Painter and Marmoset Toolbag2 (when both set to use GGX) much more closely
    • Realtime reflection probe glosiness matches baked glosiness better
    • Reflection probe convolution is much faster and preserves HDR highlights better
     
    Aras, Oct 23, 2015
    #5
    Shodan0101, AlanMattano, shkar-noori and 5 others like this.

  6. Lex4art

    Lex4art

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    Great! Thank you very much for clarification :)
     
    Last edited: Oct 23, 2015
    Lex4art, Oct 23, 2015
    #6

  7. Mark_29

    Mark_29

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    Just a quick question
    Just a quick question here then. Will GGX be default? Or will there be options within the editor to jump back in forward (like linear lighting etc?)
     
    Mark_29, Nov 2, 2015
    #7

  8. Devil_Inside

    Devil_Inside

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    @Aras, do all these changes have any impact on mobile performance?
     
    Devil_Inside, Nov 2, 2015
    #8

  9. hippocoder

    hippocoder

    Digital Ape

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    I'm not sure you'd want this stuff for mobile :p
     
    hippocoder, Nov 3, 2015
    #9

  10. Devil_Inside

    Devil_Inside

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    The current shader (5.2) works fine (not using it for everything in my scene). How bad is the new stuff, if it's actually bad?
     
    Devil_Inside, Nov 3, 2015
    #10

  11. hippocoder

    hippocoder

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    I'd imagine GGX to take a bit more time up, if you wanted to still use that. Bear in mind Unity are researching the Mobile PBS, and people should probably roll their own or wait for that.

    The current desktop standard shader is a huge waste of resources for a phone.
     
    hippocoder, Nov 3, 2015
    #11
    Devil_Inside likes this.

  12. Devil_Inside

    Devil_Inside

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    Ok, Thanks!
     
    Devil_Inside, Nov 3, 2015
    #12