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Bug Post Processing 3.02 and above has FXAA / Render Target issue.

Discussion in 'Image Effects' started by marchall_box, Jul 18, 2021.

  1. marchall_box

    marchall_box

    Joined:
    Mar 28, 2013
    Posts:
    127
    Hello,

    It seems like the Unity Developer who made the change into PostProcessing Stack on 2020 12-18 made a mistake.
    Its the commit for 3.02(aka 3.03 - https://docs.unity3d.com/Packages/com.unity.postprocessing@3.0/changelog/CHANGELOG.html) - Fix FXAA when running on render-targets without alpha channel: force using green channel as luminance

    This makes a significant bug where it is creating weird artifacts on FXAA.
    ezgif-3-1d6ede9a5186.gif

    Here is the project that you can download.
    https://drive.google.com/drive/folders/172csBvNPg86ICV85FpKlARQqzpKGXBwA?usp=sharing

    Unity 2019.4.27f1 LTS, Built-in render pipeline.
    Post Processing 3.02~3.1.1 has this problem.
    Post Processing 3.01 and below(tested down to 2.3.0) which is before that commit, everything works fine.

    I need a higher version of the asset for PS5 support.

    Please fix this problem.
    Let me know if there is a better place to report this bug.
    This is a pretty critical problem for my project.
     
    Last edited: Jul 19, 2021