2012-05-09 21:50:08 +00:00
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#version 120
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2016-08-03 07:59:29 +00:00
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2012-05-09 21:50:08 +00:00
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uniform sampler2D input_tex;
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uniform vec2 fg_BufferSize;
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uniform float blurOffset_x;
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uniform float blurOffset_y;
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const float f[5] = float[](0.0, 1.0, 2.0, 3.0, 4.0);
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const float w[5] = float[](0.2270270270, 0.1945945946, 0.1216216216, 0.0540540541, 0.0162162162 );
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void main() {
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vec2 blurOffset = vec2(blurOffset_x, blurOffset_y) / fg_BufferSize;
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vec2 coords = gl_TexCoord[0].xy;
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vec4 color = vec4( texture2D( input_tex, coords + f[0] * blurOffset ).rgb * w[0], 1.0 );
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for (int i=1; i<5; ++i ) {
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color.rgb += texture2D( input_tex, coords - f[i] * blurOffset ).rgb * w[i];
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color.rgb += texture2D( input_tex, coords + f[i] * blurOffset ).rgb * w[i];
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}
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gl_FragColor = color;
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}
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