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Resolved Weird dots in the bottom of the object

Discussion in 'Global Illumination' started by NewMagic-Studio, Jun 7, 2023.

  1. NewMagic-Studio

    NewMagic-Studio

    Joined:
    Feb 25, 2015
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    454
    Hi,
    I have placed some dynamic objects in the scene and i get these weird dots in the bottom. Any ideas why it can be?
    it just happens when the object is very near the floor, if i move it a bit up dissapears
    upload_2023-6-7_15-36-5.png
     
    Last edited: Jun 7, 2023
    NewMagic-Studio, Jun 7, 2023
    #1

  2. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Jul 3, 2020
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    327
    Hey. I have some questions for you:
    - Are you using one of the SRPs? URP or HDRP?
    - Which version of Unity?
    - Do you have Adaptive Probe Volumes enabled? Are you using light probes in any way?
     
    Pema-Malling, Jun 7, 2023
    #2

  3. NewMagic-Studio

    NewMagic-Studio

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    Hi,
    Unity 2021.3 LTS with HDRP and i just have probe volumes enabled
     
    NewMagic-Studio, Jun 7, 2023
    #3

  4. Pema-Malling

    Pema-Malling

    Unity Technologies

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    APV uses jittered sampling to avoid hard seams on the borders between areas sampling different atlas bricks. This is likely what you are seeing. I believe you can disable or lower it under Probe Volume Options on the Volume component, using the Sampling Noise slider. The control is shown here https://forum.unity.com/threads/ada...r-hdrp-in-2021-2.1238824/page-10#post-8969359
     
    Pema-Malling, Jun 7, 2023
    #4
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  5. NewMagic-Studio

    NewMagic-Studio

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    I added that option in volumes but just have the normal bias option
    upload_2023-6-7_16-46-3.png
     
    NewMagic-Studio, Jun 7, 2023
    #5

  6. Pema-Malling

    Pema-Malling

    Unity Technologies

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    Hmm.... maybe the setting was only added later, or it has moved. I'm not sure, as I am not very involved with APV. I'll ask around :)
     
    Pema-Malling, Jun 7, 2023
    #6

  7. maximeg_unity

    maximeg_unity

    Unity Technologies

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    Apr 13, 2022
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    Hey,
    Concerning the option for the Sampling Noise, it might be hidden behind Show Additionnal Properties (you can click on the thee dots on the top right corner of the Probe Volumes Option override). upload_2023-6-7_17-36-32.png

    Otherwise, APV was still in a very early state in Unity 2021.3 LTS, that's why I'm not absolutely sure that this option was already exposed. If possible I would advise to use at least the 2022.2 version.
     
    maximeg_unity, Jun 7, 2023
    #7
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  8. NewMagic-Studio

    NewMagic-Studio

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    Thanks, that solved the problem
     
    NewMagic-Studio, Jun 7, 2023
    #8