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why do we need "TEXCOORD0"????after "float2 uv"

Discussion in 'Scripting' started by JohnSonLi, Jan 8, 2013.

  1. JohnSonLi

    JohnSonLi

    Joined:
    Apr 15, 2012
    Posts:
    586
    what is the differncd between "struct v2f { and "struct v2f{ why do we need SV_POSITION and TEXCOORD0 stuff?
    float4 pos : SV_POSITION; float4 pos;
    float2 uv : TEXCOORD0; float2 uv;
    };" }"
     
    JohnSonLi, Jan 8, 2013
    #1

  2. JohnSonLi

    JohnSonLi

    Joined:
    Apr 15, 2012
    Posts:
    586
    sorry something wrong with the margin.
    what is the difference between "float4 pos:SV_POSITION"and "float4 pos;"why do we need SV_POSITION and TEXCOORD0 stuff?
     
    JohnSonLi, Jan 8, 2013
    #2

  3. KelsoMRK

    KelsoMRK

    Joined:
    Jul 18, 2010
    Posts:
    5,539
    This should really be in the Shader section. It defines the semantic for that parameter. It basically tells the shader where the data is coming from in the application.
     
    KelsoMRK, Jan 8, 2013
    #3