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76 行
2.1 KiB
76 行
2.1 KiB
Shader "Hidden/DistordTest"
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{
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Properties
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{
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}
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SubShader
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{
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Tags { "RenderType"="Opaque" }
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LOD 100
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Pass
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{
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CGPROGRAM
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#include "UnityCustomRenderTexture.cginc"
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#pragma vertex CustomRenderTextureVertexShader
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#pragma fragment frag
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#pragma target 3.0
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#define CENTER 0.15
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float4 frag(v2f_customrendertexture IN) : COLOR
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{
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float4 col = float4(0,0,0,1);
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fixed2 centeredUV = IN.localTexcoord.xy * 2 - 1;
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// x distortion (r)
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if (centeredUV.x > CENTER)
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{
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if (abs(centeredUV.y) < CENTER)
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col.r = 1;
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else
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col.r = (centeredUV.x - CENTER) / (1-CENTER);
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}
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if (centeredUV.x < -CENTER)
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{
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if (abs(centeredUV.y) < CENTER)
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col.r = -1;
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else
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col.r = (centeredUV.x + CENTER) / (1 - CENTER);
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}
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// y distortion (g)
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if (centeredUV.y > CENTER)
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{
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if (abs(centeredUV.x) < CENTER)
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col.g = 1;
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else
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col.g = (centeredUV.y - CENTER) / (1 - CENTER);
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}
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if (centeredUV.y < -CENTER)
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{
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if (abs(centeredUV.x) < CENTER)
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col.g = -1;
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else
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col.g = (centeredUV.y + CENTER) / (1 - CENTER);
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}
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// distortion blur (b)
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if (abs(centeredUV.x) < CENTER)
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if (abs(centeredUV.y) < CENTER)
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col.b = saturate( 1 - length(centeredUV.xy) / CENTER );
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centeredUV = abs(centeredUV);
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centeredUV -= CENTER;
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centeredUV /= 1 - CENTER;
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centeredUV = centeredUV * 2 - 1;
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col.b += 1-saturate( length(centeredUV) );
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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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