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[Solved] HDRP 7.3.1 - no shadow caster culling optimization present any more?

Discussion in 'High Definition Render Pipeline' started by larsbertram1, Mar 23, 2020.

  1. larsbertram1

    larsbertram1

    Joined:
    Oct 7, 2008
    Posts:
    6,692
    since unity 2017 shadow casters where dropped in higher shadow cascades if they were fully covered in a lower cascade already (more or less) using the built in rp. unity always was very conservative regarding this but testing HDRP 7.3.1. is seems to have been fully dropped which is a huge performance degression imho.

    as you can see: the small cube is already fully covered in cascade 2. so it might appear in cascade 3 as well (conservative, ok). but it is also rendered in cascade 4!
    i simply can not believe that such a simple optimization proposed by the former stingray team fully got overseen.
    or do i miss something here?

    sc_02.PNG
     
    Last edited: Mar 23, 2020
    larsbertram1, Mar 23, 2020
    #1

  2. larsbertram1

    larsbertram1

    Joined:
    Oct 7, 2008
    Posts:
    6,692
    turned out that unity 2019.3.5 and HDRP does even more conservative shadow caster culling compared to unity 2018.4.lts and built in RP.
     
    larsbertram1, Mar 26, 2020
    #2