Lucas de Vries
35 lines
1.0 KiB
Plaintext
35 lines
1.0 KiB
Plaintext
#version 120
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uniform sampler2D screen;
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varying vec2 uv;
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const float blurStep = 0.001;
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const vec3 gray = vec3(0.50, 0.50, 0.50);
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const float desaturateLevel = 0.6;
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void main()
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{
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//Blur the pixel
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vec4 color = texture2D(screen, uv);
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color += texture2D(screen, uv + vec2(-blurStep, -blurStep));
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color += texture2D(screen, uv + vec2(0, -blurStep));
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color += texture2D(screen, uv + vec2(+blurStep, -blurStep));
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color += texture2D(screen, uv + vec2(-blurStep, 0));
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color += texture2D(screen, uv + vec2(+blurStep, 0));
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color += texture2D(screen, uv + vec2(-blurStep, +blurStep));
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color += texture2D(screen, uv + vec2(0, +blurStep));
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color += texture2D(screen, uv + vec2(+blurStep, +blurStep));
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color /= 9.0;
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//Desaturate the pixel
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color.rgb = mix(vec3(dot(gray, color.rgb)), color.rgb, desaturateLevel);
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//Darkened edge
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float dist = length(uv - vec2(0.5, 0.5));
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if(dist > 0.4)
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color.rgb = mix(color.rgb, vec3(0.0, 0.0, 0.0), (dist - 0.4)/0.3);
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gl_FragColor = color * gl_Color;
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}
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