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59 行
1.1 KiB
59 行
1.1 KiB
Shader "Hidden/ColorCorrectionCurvesSimple" {
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Properties {
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_MainTex ("Base (RGB)", 2D) = "" {}
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_RgbTex ("_RgbTex (RGB)", 2D) = "" {}
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}
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// Shader code pasted into all further CGPROGRAM blocks
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CGINCLUDE
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#include "UnityCG.cginc"
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struct v2f {
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float4 pos : SV_POSITION;
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half2 uv : TEXCOORD0;
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};
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sampler2D _MainTex;
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sampler2D _RgbTex;
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fixed _Saturation;
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v2f vert( appdata_img v )
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{
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v2f o;
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o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
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o.uv = v.texcoord.xy;
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return o;
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}
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fixed4 frag(v2f i) : SV_Target
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{
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fixed4 color = tex2D(_MainTex, i.uv);
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fixed3 red = tex2D(_RgbTex, half2(color.r, 0.5/4.0)).rgb * fixed3(1,0,0);
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fixed3 green = tex2D(_RgbTex, half2(color.g, 1.5/4.0)).rgb * fixed3(0,1,0);
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fixed3 blue = tex2D(_RgbTex, half2(color.b, 2.5/4.0)).rgb * fixed3(0,0,1);
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color = fixed4(red+green+blue, color.a);
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fixed lum = Luminance(color.rgb);
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color.rgb = lerp(fixed3(lum,lum,lum), color.rgb, _Saturation);
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return color;
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}
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ENDCG
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Subshader {
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Pass {
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ZTest Always Cull Off ZWrite Off
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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ENDCG
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}
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}
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Fallback off
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} // shader
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