18 lines
527 B
GLSL
18 lines
527 B
GLSL
void main()
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{
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float4 c0 = Sample();
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float4 tmp = float4(0.0, 0.0, 0.0, 0.0);
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tmp += c0 - SampleOffset(int2( 2, 2));
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tmp += c0 - SampleOffset(int2(-2, -2));
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tmp += c0 - SampleOffset(int2( 2, -2));
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tmp += c0 - SampleOffset(int2(-2, 2));
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float grey = ((0.222 * tmp.r) + (0.707 * tmp.g) + (0.071 * tmp.b));
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// get rid of the bottom line, as it is incorrect.
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if (GetCoordinates().y*GetResolution().y < 163.0)
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tmp = float4(1.0, 1.0, 1.0, 1.0);
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c0 = c0 + 1.0 - grey * 7.0;
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SetOutput(float4(c0.r, c0.g, c0.b, 1.0));
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}
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