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Demkeys/TextureBlendShader.shader

Created September 3, 2019 06:12
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  1. Demkeys created this gist Sep 3, 2019.
    84 changes: 84 additions & 0 deletions TextureBlendShader.shader
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,84 @@
    Shader "Custom/TextureBlendShader"
    {
    Properties
    {
    _MainTex01 ("Texture01", 2D) = "white" {}
    _MainTex02 ("Texture02", 2D) = "white" {}
    _MainTex03 ("Texture03", 2D) = "white" {}
    [Header(Fragment RGBA Multipliers)]
    _FragR ("FragR", Range(0,5)) = 1
    _FragG ("FragG", Range(0,5)) = 1
    _FragB ("FragB", Range(0,5)) = 1
    _FragA ("FragA", Range(0,5)) = 1
    }
    SubShader
    {
    Tags { "RenderQueue"="Geometry" }
    Pass
    {
    CGPROGRAM
    #pragma vertex vert
    #pragma fragment frag
    #include "UnityCG.cginc"

    sampler2D _MainTex01; float4 _MainTex01_ST;
    sampler2D _MainTex02; float4 _MainTex02_ST;
    sampler2D _MainTex03; float4 _MainTex03_ST;
    float _FragR; float _FragG; float _FragB; float _FragA;

    float Remap(float value, float low1, float high1, float low2, float high2)
    {
    return low2 + (value - low1) * (high2 - low2) / (high1 - low1);
    }

    void vert (
    float4 pos : POSITION,
    out float4 opos : SV_POSITION,
    float2 texCoord0 : TEXCOORD0,
    out float4 otexCoord0 : TEXCOORD0,
    out float4 otexCoord1 : TEXCOORD1
    )
    {
    opos = UnityObjectToClipPos(pos);
    _MainTex01_ST.z = sin(radians(_Time.x));
    _MainTex01_ST.w = sin(radians(_Time.x/10));
    _MainTex02_ST.z = _Time.x/5;
    _MainTex02_ST.w = -(_Time.x/10);
    _MainTex03_ST.z = -(_Time.x/9);
    _MainTex03_ST.w = sin(radians(_Time.x/5))*2;
    _MainTex01_ST.x = Remap(sin(radians(_Time.y)),-1,1,1,1.5);
    _MainTex01_ST.y = Remap(sin(radians(_Time.z/2)),-1,1,0.6,1.2);
    _MainTex02_ST.x = Remap(sin(radians(_Time.x/5)),-1,1,0.5,1);
    _MainTex02_ST.y = Remap(sin(radians(_Time.x/7)),-1,1,1,2);
    _MainTex03_ST.x = Remap(sin(radians(_Time.x/15)),-1,1,1,1.5);
    _MainTex03_ST.y = Remap(cos(radians(_Time.x/15)),-1,1,0.6,1.5);

    otexCoord0.xy = texCoord0.xy * _MainTex01_ST.xy + _MainTex01_ST.zw;
    otexCoord0.zw = texCoord0.xy * _MainTex02_ST.xy + _MainTex02_ST.zw;
    otexCoord1.xy = texCoord0.xy * _MainTex03_ST.xy + _MainTex03_ST.zw;
    otexCoord1.zw = 0;
    }

    float4 frag (
    float4 pos : SV_POSITION,
    float4 texCoord0 : TEXCOORD0,
    float4 texCoord1 : TEXCOORD1
    ) : SV_TARGET
    {
    float4 col1 = tex2D(_MainTex01, texCoord0.xy);
    float4 col2 = tex2D(_MainTex01, texCoord0.zw);
    float4 col3 = tex2D(_MainTex01, texCoord1.xy);
    float4 fcol = float4(lerp(col1.rgb, col2.rgb, min(col1.r, col2.r)),1);
    fcol.rgb = lerp(fcol.rgb, col3.rgb, min(col2.r, col3.r));
    fcol.r *= _FragR;
    fcol.g *= _FragG;
    fcol.b *= _FragB;
    fcol.a *= _FragA;

    return fcol;
    }

    ENDCG
    }
    }
    }