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Question Double-Sided Material + Motion Vectors not compatible?

Discussion in 'High Definition Render Pipeline' started by Jahvan, Jul 19, 2020.

  1. Jahvan

    Jahvan

    Joined:
    Feb 1, 2017
    Posts:
    10
    I am rendering a hair card model using a double-sided material. It appears that if "Motion Vectors" are enabled, the double-sidedness of the material is ignored. Is this normal? Or is there a setting somewhere that I need to change?

    Edit: Seems to only happen with the Hair master node, and only when there is any kind of movement of the mesh. Tried a sample material that uses the node on a plane. Moving it around produced the same issue.



     
    Last edited: Jul 19, 2020
  2. SammmZ

    SammmZ

    Joined:
    Aug 13, 2014
    Posts:
    173
    Just willing to upvote the topic. It is impossible to use a DoubleSided shader on a skinned mesh renderer.
    if Skinned Motion vectors are on - the backside just disappears
    if Skinned Motion vectors are off - the backside is invisible in motion and visible while static, so the picture is terribly glitchy