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Bug SpeedTree LOD regression in Unity 2021.2.0b4

Discussion in '2021.2 Beta' started by Claytonious, Jul 28, 2021.

  1. Claytonious

    Claytonious

    Joined:
    Feb 16, 2009
    Posts:
    904
    SpeedTree LOD rendering now exhibits crazy vertical scaling that ruins LOD and makes SpeedTrees unusable in this Unity version. Video demonstration:
    .

    I've filed a bug report with a simple repro project attached: 1354004.

    Is SpeedTree known to be in bad shape in the beta right now? Is this temporary? Is it a first-class citizen in this release or is some kind of transition happening where it will be "redone" in some way and will be broken for a while?
     
    Last edited: Jul 28, 2021
    Claytonious, Jul 28, 2021
    #1
    laurentlavigne likes this.

  2. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,136
    Hi @Claytonious,

    Thanks for the bug report, we'll look into it. We added SpeedTree 8 support to both URP and HDRP in 21.2 beta, and there might still be bugs that we need to fix.
    Yes it is.
     
    LeonhardP, Jul 30, 2021
    #2

  3. Claytonious

    Claytonious

    Joined:
    Feb 16, 2009
    Posts:
    904
    Thanks as always for the reply, @LeonhardP. I'm still confused by this, though:

    URP seemed to already support SpeedTree 8 in earlier Unity versions. For example in the built-in shaders archive for Unity 2021.1.15 there is this file: DefaultResourcesExtra\Nature\SpeedTree8.shader, which looks like this in the Unity 2021.1.15 editor:



    And it seems to work. But was something wrong about it that is now fixed?
     
    Claytonious, Jul 30, 2021
    #3

  4. LeonhardP

    LeonhardP

    Unity Technologies

    Joined:
    Jul 4, 2016
    Posts:
    3,136
    Some further clarification, what's new in URP is ShaderGraph support for SpeedTree 8

    From the URP changelog:
    • Added a SpeedTree 8 Shader Graph but did not set it as the default when importing or upgrading Speed Tree 8 assets. Because URP doesn't yet support per-material culling, this Shader Graph does not yet behave in the same way as the existing handwritten SpeedTree 8 shader for URP.
     
    LeonhardP, Aug 3, 2021
    #4
    Claytonious, mariandev and Ruchir like this.

  5. big_3

    big_3

    Joined:
    Apr 20, 2016
    Posts:
    88
    Hi,

    I have the same problem with 2022.2.1f.

    How can I fix this?

    I cannot find the bug in the issuetracker.

    Thanks
    Jus
     
    big_3, Jan 4, 2023
    #5

  6. nubbyninja

    nubbyninja

    Joined:
    May 16, 2019
    Posts:
    25
    2021.3.9f1 encountering same issue with URP / Nature / SpeedTree8 shader.
     
    nubbyninja, Feb 23, 2023
    #6