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what is the usage of UNITY_VERTEX_INPUT_INSTANCE_ID?

Discussion in 'Shaders' started by JohnSonLi, Jan 31, 2018.

  1. JohnSonLi

    JohnSonLi

    Joined:
    Apr 15, 2012
    Posts:
    586
    I seen this definition like
    CGIncludes\UnityInstancing.cginc: #define DEFAULT_UNITY_VERTEX_INPUT_INSTANCE_ID uint instanceID;
    Anyone could tell me what this variable is? When and how should I use it?
     
    JohnSonLi, Jan 31, 2018
    #1

  2. Balikk

    Balikk

    Joined:
    Oct 23, 2014
    Posts:
    49
    Hi,

    It's for the GPU instancing, you can find more informations and example in unity doc here.
     
    Balikk, Jan 31, 2018
    #2

  3. JohnSonLi

    JohnSonLi

    Joined:
    Apr 15, 2012
    Posts:
    586
    Thank you so much!
     
    JohnSonLi, Feb 2, 2018
    #3
    Balikk likes this.