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59 lines
1.1 KiB
Plaintext
59 lines
1.1 KiB
Plaintext
2 months ago
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// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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// Final pass in the contrast stretch effect: apply
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// color stretch to the original image, based on currently
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// adapted to minimum/maximum luminances.
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Shader "Hidden/Contrast Stretch Apply" {
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Properties {
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_MainTex ("Base (RGB)", 2D) = "white" {}
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_AdaptTex ("Base (RGB)", 2D) = "white" {}
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}
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Category {
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SubShader {
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Pass {
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ZTest Always Cull Off ZWrite Off
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Fog { Mode off }
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma fragmentoption ARB_precision_hint_fastest
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#include "UnityCG.cginc"
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struct v2f {
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float4 pos : POSITION;
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float2 uv[2] : TEXCOORD0;
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};
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uniform sampler2D _MainTex;
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uniform sampler2D _AdaptTex;
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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 = UnityObjectToClipPos (v.vertex);
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o.uv[0] = MultiplyUV (UNITY_MATRIX_TEXTURE0, v.texcoord);
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o.uv[1] = float2(0.5,0.5);
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return o;
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}
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float4 frag (v2f i) : COLOR
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{
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float4 col = tex2D(_MainTex, i.uv[0]);
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float4 adapted = tex2D(_AdaptTex, i.uv[1]);
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float vmul = 1.0 / adapted.z;
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float vadd = -adapted.w;
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col.rgb = col.rgb * vmul + vadd;
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return col;
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}
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ENDCG
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}
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}
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}
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Fallback off
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}
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