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Question [Solved] mipmaps + SAMPLE_TEXTURE2D_ARRAY_GRAD ?

Discussion in 'Shaders' started by nukadelic, Sep 6, 2023.

  1. nukadelic

    nukadelic

    Joined:
    Aug 5, 2017
    Posts:
    65
    Is there a way to sample a texture 2d array grad with mipmaps ? Making a custom terrain shader and i need to use the grad with ddx and ddy to fix texture seams but it looks like it no longer samples mipmaps ? is there a way to manually do that or is there a alternative method for this ?
     
    nukadelic, Sep 6, 2023
    #1

  2. nukadelic

    nukadelic

    Joined:
    Aug 5, 2017
    Posts:
    65
    solved : same method - the ddx/ddy needs to sample the default UV0 and it has to be a tilling value relative to the mesh size , so the default value of tilling 1 will not be enough for a large mesh , but something like a value of 5 works fine for a 250x250 mesh size in unity units.
     
    nukadelic, Sep 6, 2023
    #2