69 lines
1.7 KiB
Plaintext
69 lines
1.7 KiB
Plaintext
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// 1px dilate
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Shader "Hidden/ftFarSphereDilate"
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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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// No culling or depth
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Cull Off ZWrite Off ZTest Always
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Pass
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{
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "UnityCG.cginc"
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struct v2f
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{
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float4 vertex : SV_POSITION;
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float2 uv : TEXCOORD0;
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};
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v2f vert (uint id : SV_VertexID)
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{
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v2f o;
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float4 pos[6];
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pos[0] = float4(-1, -1, 0.5, 1);
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pos[1] = float4(-1, 1, 0.5, 1);
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pos[2] = float4(1, 1, 0.5, 1);
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pos[3] = float4(1, 1, 0.5, 1);
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pos[4] = float4(1, -1, 0.5, 1);
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pos[5] = float4(-1, -1, 0.5, 1);
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o.vertex = pos[id];
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o.uv = o.vertex.xy * 0.5f + 0.5f;
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o.uv.y = 1.0f - o.uv.y;
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return o;
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}
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sampler2D _MainTex;
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float _InvCubeSize;
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float4 frag (v2f i) : SV_Target
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{
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float4 c = tex2Dlod(_MainTex, float4(i.uv,0,0));
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if (c.a > 0) return c;
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int dilate = 1;
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for(int y=-dilate; y<=dilate; y++)
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{
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for(int x=-dilate; x<=dilate; x++)
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{
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float4 c2 = tex2Dlod(_MainTex, float4(i.uv + float2(x,y) * _InvCubeSize,0,0));
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if (c2.a > 0) c = c2;
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}
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}
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return c;
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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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