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Using terrain alphamap in visual effect graph

Discussion in 'Visual Effect Graph' started by FabioGavinelli, May 6, 2020.

  1. FabioGavinelli

    FabioGavinelli

    Joined:
    Nov 24, 2018
    Posts:
    10
    hi all,

    I i'm trying to use terrain's alphamap in the vfx graph to determin where the particles have to spawn.

    I know I can use the "Set Position From Map" node to achive this but I want the particles to spwan according only one layer that in my case is rapresented by the green color of the texture. The problem is that I can't split the map in RGBA and use only the green part. Is this possible? If yes, how can I achive this?

    Annotazione 2020-05-06 162712.png
     
    FabioGavinelli, May 6, 2020
    #1

  2. marianomeijome

    marianomeijome

    Joined:
    Dec 23, 2019
    Posts:
    5
    I think you want to use the Sample Texture2D node and then feed it into 'Set Position'
     

    Attached Files:

    marianomeijome, May 6, 2020
    #2
    florianhanke likes this.

  3. FabioGavinelli

    FabioGavinelli

    Joined:
    Nov 24, 2018
    Posts:
    10
    but sample node take just one point of the texture right?
     
    FabioGavinelli, May 6, 2020
    #3