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Question HDRP Physically Based Sky improvements/new features

Discussion in 'Graphics Dev Blitz Day 2023 - Q&A' started by sqallpl, May 25, 2023.

  1. sqallpl

    sqallpl

    Joined:
    Oct 22, 2013
    Posts:
    372
    Are there any Physically Based Sky features/improvements planned/in progress for 23.2 and further releases apart from 'Physical Night Sky'?

    I'm especially wondering about features/improvements like atmospheric scattering affecting scene objects, cooperation between fog and sky, default brightness/exposure, negative sun angle support (civil, nautical and astronomical twilight), day and night transition, multiple scattering etc.

    Thanks
     
    Last edited: May 25, 2023
    sqallpl, May 25, 2023
    #1
    SebLazyWizard and linosia97 like this.

  2. SebLagarde

    SebLagarde

    Unity Technologies

    Joined:
    Dec 30, 2015
    Posts:
    930
    Hi, we are starting improvement of the PBS sky and are doing it step by step. first one being to add support for physically night sky, and other change will follow. Resources are limited and we can't tackle all at once.
     
    SebLagarde, May 26, 2023
    #2

  3. SebLazyWizard

    SebLazyWizard

    Joined:
    Jun 15, 2018
    Posts:
    219
    What does "Physical Night Sky" actually mean, the roadmap doesn't reveal any meaningful info about it.
    Will it provide a better way to render moons, maybe actual spheres lit by the main directional light?
    Is it going to support star-twinkling depending on atmospheric conditions?

    I really have no clue what it is all about, so a deeper insight would be nice.
     
    SebLazyWizard, May 30, 2023
    #3

  4. adrien-de-tocqueville

    adrien-de-tocqueville

    Unity Technologies

    Joined:
    Mar 16, 2020
    Posts:
    154
    It will add support for moons in the celestial body settings of the light. Additionally a pbrsky subtarget will be added to shadergraph in order to support custom rendering for stars instead of relying on a cubemap. Also this graph will allow to customize a bit more the look of the planet when viewed from space by supporting normals and smoothness
     
    adrien-de-tocqueville, May 31, 2023
    #4
    SebLazyWizard likes this.