38 lines
1,022 B
Plaintext
38 lines
1,022 B
Plaintext
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@block frag
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uniform float offset_amt;
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// Sharpen kernel
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float kernel[9] = float[](
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-1, -1, -1,
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-1, 9, -1,
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-1, -1, -1
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);
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void frag()
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{
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vec2 offset = vec2(1/offset_amt, 1/offset_amt);
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vec2 offsets[9] = vec2[](
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vec2(-offset.x, offset.y), // top-left
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vec2(0.0, offset.y), // top-center
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vec2(offset.x, offset.y), // top-right
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vec2(-offset.x, 0.0), // center-left
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vec2(0.0, 0.0), // center-center (current pixel)
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vec2(offset.x, 0.0), // center-right
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vec2(-offset.x, -offset.y), // bottom-left
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vec2(0.0, -offset.y), // bottom-center
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vec2(offset.x, -offset.y) // bottom-right
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);
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color = vec4(0.0);
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// Apply the kernel to the current pixel and its neighbors
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for (int i = 0; i < 9; i++) {
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vec3 samp = texture(sampler2D(diffuse,smp),uv+offsets[i]).rgb;
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color.rgb += samp * kernel[i];
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}
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color.a = 1.0;
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}
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@end
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#include <postbase.cg>
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