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How to get scale in lightmap?

Discussion in 'Shaders' started by SticklandPWorm, Jan 10, 2022.

  1. SticklandPWorm

    SticklandPWorm

    Joined:
    Apr 20, 2017
    Posts:
    17
    Hello

    Can anyone tell me how I would find the scaling unity applies to different object UV's in a lightmap from inside a shader please?

    Many thanks
     
    SticklandPWorm, Jan 10, 2022
    #1

  2. AcidArrow

    AcidArrow

    Joined:
    May 20, 2010
    Posts:
    11,061
    v.texcoord1.xy * unity_LightmapST.xy + unity_LightmapST.zw;
     
    AcidArrow, Jan 10, 2022
    #2

  3. SticklandPWorm

    SticklandPWorm

    Joined:
    Apr 20, 2017
    Posts:
    17
    Thanks AcidArrow.

    Unfortunately I left out the word graph. How would I get the scale value from inside a Shader Graph?
     
    SticklandPWorm, Jan 10, 2022
    #3
    AcidArrow likes this.

  4. AcidArrow

    AcidArrow

    Joined:
    May 20, 2010
    Posts:
    11,061
    Right, sorry, no idea then, I haven't really used shader graph for anything non-trivial, hopefully someone else will chime in.
     
    AcidArrow, Jan 10, 2022
    #4