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93 lines
1.8 KiB
93 lines
1.8 KiB
// Colorful FX - Unity Asset |
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// Copyright (c) 2015 - Thomas Hourdel |
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// http://www.thomashourdel.com |
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Shader "Hidden/Colorful/Halftone" |
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{ |
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Properties |
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{ |
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_MainTex ("Base (RGB)", 2D) = "white" {} |
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_Params ("Scale (X) DotSize (Y) Smoothness (Z)", Vector) = (12, 1.35, 0.08) |
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} |
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CGINCLUDE |
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#include "UnityCG.cginc" |
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#include "./Colorful.cginc" |
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sampler2D _MainTex; |
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half4 _Params; |
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half2 _Center; |
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half4x4 _MatRot; |
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half4 halftone(half2 fc, half2x2 m) |
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{ |
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half2 g = floor(mul(m, fc) / _Params.x) * _Params.x; |
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half2 smp = mul(g + 0.5 * _Params.x, m); |
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half s = min(length(fc - smp) / (_Params.y * 0.5 * _Params.x), 1.0); |
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half4 c = RGBtoCMYK(tex2D(_MainTex, (smp + _Center) / _ScreenParams.xy)); |
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return c + s; |
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} |
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half3 compute(v2f_img i) |
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{ |
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half2 coord = (i.uv * _ScreenParams.xy) - _Center; |
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half4 cmyk = half4( |
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halftone(coord, half2x2(_MatRot[0])).x, // C |
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halftone(coord, half2x2(_MatRot[1])).y, // M |
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halftone(coord, half2x2(_MatRot[2])).z, // Y |
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halftone(coord, half2x2(_MatRot[3])).w // K |
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); |
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return CMYKtoRGB(smoothstep(0.8 - _Params.z, 0.8 + _Params.z, cmyk)); |
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} |
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half4 frag(v2f_img i) : SV_Target |
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{ |
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return half4(compute(i), 1.0); |
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} |
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half4 frag_desaturate(v2f_img i) : SV_Target |
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{ |
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half3 rgb = compute(i); |
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half lum = luminance(rgb); |
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return half4(lum, lum, lum, 1.0); |
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} |
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ENDCG |
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SubShader |
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{ |
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ZTest Always Cull Off ZWrite Off |
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Fog { Mode off } |
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// (0) |
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Pass |
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{ |
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CGPROGRAM |
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#pragma vertex vert_img |
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#pragma fragment frag |
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#pragma fragmentoption ARB_precision_hint_fastest |
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#pragma target 3.0 |
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ENDCG |
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} |
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// (1) Desaturate |
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Pass |
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{ |
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CGPROGRAM |
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#pragma vertex vert_img |
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#pragma fragment frag_desaturate |
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#pragma fragmentoption ARB_precision_hint_fastest |
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#pragma target 3.0 |
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ENDCG |
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} |
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} |
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FallBack off |
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}
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