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32 lines
1.5 KiB
GLSL
32 lines
1.5 KiB
GLSL
#version 120
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//
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// vertical_blur.frag
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// fragment shader
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//
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// Created by Andrzej Kapolka on 8/8/13.
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// Copyright (c) 2013 High Fidelity, Inc. All rights reserved.
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//
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// the texture containing the color to blur
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uniform sampler2D colorTexture;
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void main(void) {
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float dt = dFdy(gl_TexCoord[0].t);
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gl_FragColor = (texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -15.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -13.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -11.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -9.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -7.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -4.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -3.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * -1.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 1.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 3.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 5.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 7.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 9.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 11.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 13.5)) +
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texture2D(colorTexture, gl_TexCoord[0].st + vec2(0.0, dt * 15.5))) / 16.0;
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}
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