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67 行
1.2 KiB
67 行
1.2 KiB
Shader "Hidden/ContrastComposite" {
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Properties {
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_MainTex ("Base (RGB)", 2D) = "" {}
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_MainTexBlurred ("Base Blurred (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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float2 uv[2] : TEXCOORD0;
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};
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sampler2D _MainTex;
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sampler2D _MainTexBlurred;
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float4 _MainTex_TexelSize;
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float intensity;
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float threshhold;
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v2f vert( appdata_img v ) {
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v2f o;
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o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
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o.uv[0] = v.texcoord.xy;
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o.uv[1] = v.texcoord.xy;
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#if UNITY_UV_STARTS_AT_TOP
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if (_MainTex_TexelSize.y < 0)
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o.uv[0].y = 1-o.uv[0].y;
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#endif
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return o;
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}
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half4 frag(v2f i) : SV_Target
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{
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half4 color = tex2D (_MainTex, i.uv[1]);
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half4 blurred = tex2D (_MainTexBlurred, (i.uv[0]));
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half4 difff = color - blurred;
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half4 signs = sign (difff);
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difff = saturate ( (color-blurred) - threshhold) * signs * 1.0/(1.0-threshhold);
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color += difff * intensity;
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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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