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- sampler s0 : register(s0);
- float4 p0 : register(c0);
- float4 p1 : register(c1);
-
- #define width (p0[0])
- #define height (p0[1])
- #define counter (p0[2])
- #define clock (p0[3])
- #define one_over_width (p1[0])
- #define one_over_height (p1[1])
-
- #define PI acos(-1)
-
- float4 main(float2 tex : TEXCOORD0) : COLOR
- {
- float dx = 4/width;
- float dy = 4/height;
-
- float4 c2 = tex2D(s0, tex + float2(0,-dy));
- float4 c4 = tex2D(s0, tex + float2(-dx,0));
- float4 c5 = tex2D(s0, tex + float2(0,0));
- float4 c6 = tex2D(s0, tex + float2(dx,0));
- float4 c8 = tex2D(s0, tex + float2(0,dy));
-
- float4 c0 = (-c2-c4+c5*4-c6-c8);
- if(length(c0) < 1.0) c0 = float4(0,0,0,0);
- else c0 = float4(1,1,1,0);
-
- return c0;
- }
-