29 lines
851 B
GLSL
29 lines
851 B
GLSL
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/* TODO Use textureOffset for newest version of GLSL */
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uniform sampler2D sampler;
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uniform vec2 offsets[16];
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uniform float kernel[16];
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varying vec2 tex_coord;
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void main(void)
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{
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vec4 sum = texture2D(sampler, tex_coord.st) * kernel[0];
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for (int i = 1; i < 16; i++) {
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sum += texture2D(sampler, tex_coord.st - offsets[i]) * kernel[i];
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sum += texture2D(sampler, tex_coord.st + offsets[i]) * kernel[i];
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}
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gl_FragColor = sum;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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