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Feedback Particle Flickering in Blend Mode Alpha

Discussion in 'Visual Effect Graph' started by OuroborosDraconis, Nov 25, 2022.

  1. OuroborosDraconis

    OuroborosDraconis

    Joined:
    Oct 4, 2022
    Posts:
    49
    Hi,

    I experience a problem with VFX Graph and output particle lines that cause the particles to flicker. I was generating over 10'000 lines in a close space, so the explanation (bottom links) about the Z position helped me to understand. But I also experienced that besides the dependence of the blend mode (Additive Blend Mode prevented flickering), it is also dependent on the amount of particles.
    If I reduced the amount of particles that are defined in the Capacity of the Initialize Particle block in my specific case from over 10'000 to 4096 (or less), the flickering disappeared. with 4097 (or more) the flickering started again. So it looks like that there is also a very specific cap of particles that seems to cause the flickering in Alpha Blend Mode.

    related to this topic I found this:

    https://issuetracker.unity3d.com/is...nabled-and-there-is-more-than-50000-particles

    https://answers.unity.com/questions/1734944/vfx-graph-particles-flickering-in-alpha-blend-mode.html

    the second link helped me to solve the problem in my specific case, but somehow I'm not 100% satisfied, That's why I post it here, since I am also not able to comment in the above mentioned links . I get redirected to no where when I try.