35 lines
919 B
GLSL
35 lines
919 B
GLSL
uniform sampler2D tex;
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uniform float invTexWidth;
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void main()
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{
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vec2 p = gl_TexCoord[0].xy;
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vec2 dp = vec2(invTexWidth, 0.0);
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/*
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vec3 a = texture2D(tex, p - 3.0 * dp).rgb;
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vec3 b = texture2D(tex, p - 2.0 * dp).rgb;
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vec3 c = texture2D(tex, p - 1.0 * dp).rgb;
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vec3 d = texture2D(tex, p ).rgb;
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vec3 e = texture2D(tex, p + 1.0 * dp).rgb;
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vec3 f = texture2D(tex, p + 2.0 * dp).rgb;
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vec3 g = texture2D(tex, p + 3.0 * dp).rgb;
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vec3 final = 0.015625 * (a + g)
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+ 0.09375 * (b + f)
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+ 0.234375 * (c + e)
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+ 0.3125 * d;
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gl_FragColor = vec4( final, 1.0 );
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*/
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vec3 a = texture2D(tex, p - 2.1428571 * dp).rgb;
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vec3 b = texture2D(tex, p - 0.6 * dp).rgb;
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vec3 c = texture2D(tex, p + 0.6 * dp).rgb;
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vec3 d = texture2D(tex, p + 2.1428571 * dp).rgb;
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vec3 final = (2.0 * 0.21875) * (a + d)
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+ (2.0 * 0.78125) * (b + c);
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gl_FragColor = vec4( final, 1.0 );
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} |