42 lines
2.1 KiB
GLSL
42 lines
2.1 KiB
GLSL
#version 120
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uniform sampler2D DiffuseSampler;
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varying vec2 texCoord;
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varying vec2 oneTexel;
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uniform float LumaRamp;
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void main(){
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vec4 center = texture2D(DiffuseSampler, texCoord);
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vec4 up = texture2D(DiffuseSampler, texCoord + vec2( 0.0, -oneTexel.y));
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vec4 up2 = texture2D(DiffuseSampler, texCoord + vec2( 0.0, -oneTexel.y) * 2.0);
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vec4 down = texture2D(DiffuseSampler, texCoord + vec2( oneTexel.x, 0.0));
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vec4 down2 = texture2D(DiffuseSampler, texCoord + vec2( oneTexel.x, 0.0) * 2.0);
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vec4 left = texture2D(DiffuseSampler, texCoord + vec2(-oneTexel.x, 0.0));
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vec4 left2 = texture2D(DiffuseSampler, texCoord + vec2(-oneTexel.x, 0.0) * 2.0);
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vec4 right = texture2D(DiffuseSampler, texCoord + vec2( 0.0, oneTexel.y));
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vec4 right2 = texture2D(DiffuseSampler, texCoord + vec2( 0.0, oneTexel.y) * 2.0);
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vec4 ul = texture2D(DiffuseSampler, texCoord + vec2(-oneTexel.x, -oneTexel.y));
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vec4 ur = texture2D(DiffuseSampler, texCoord + vec2( oneTexel.x, -oneTexel.y));
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vec4 bl = texture2D(DiffuseSampler, texCoord + vec2(-oneTexel.x, oneTexel.y));
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vec4 br = texture2D(DiffuseSampler, texCoord + vec2( oneTexel.x, oneTexel.y));
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vec4 gray = vec4(0.3, 0.59, 0.11, 0.0);
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float uDiff = dot(abs(center - up), gray);
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float dDiff = dot(abs(center - down), gray);
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float lDiff = dot(abs(center - left), gray);
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float rDiff = dot(abs(center - right), gray);
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float u2Diff = dot(abs(center - up2), gray);
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float d2Diff = dot(abs(center - down2), gray);
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float l2Diff = dot(abs(center - left2), gray);
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float r2Diff = dot(abs(center - right2), gray);
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float ulDiff = dot(abs(center - ul), gray);
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float urDiff = dot(abs(center - ur), gray);
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float blDiff = dot(abs(center - bl), gray);
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float brDiff = dot(abs(center - br), gray);
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float sum = uDiff + dDiff + lDiff + rDiff + u2Diff + d2Diff + l2Diff + r2Diff + ulDiff + urDiff + blDiff + brDiff;
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float sumLuma = clamp(sum, 0.0, 1.0);
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gl_FragColor = vec4(sumLuma, sumLuma, sumLuma, 1.0);
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}
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