58 lines
1.8 KiB
GLSL
58 lines
1.8 KiB
GLSL
/**
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* @file glowF.glsl
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*
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* $LicenseInfo:firstyear=2007&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2007, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#ifdef DEFINE_GL_FRAGCOLOR
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out vec4 frag_color;
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#else
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#define frag_color gl_FragColor
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#endif
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uniform sampler2D diffuseMap;
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uniform float glowStrength;
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VARYING vec4 vary_texcoord0;
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VARYING vec4 vary_texcoord1;
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VARYING vec4 vary_texcoord2;
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VARYING vec4 vary_texcoord3;
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vec4 kern = vec4(.25,.5,.8,1.0);
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void main()
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{
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vec4 col = vec4(0.0, 0.0, 0.0, 0.0);
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col += kern.x * texture2D(diffuseMap, vary_texcoord0.xy);
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col += kern.y * texture2D(diffuseMap, vary_texcoord1.xy);
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col += kern.z * texture2D(diffuseMap, vary_texcoord2.xy);
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col += kern.w * texture2D(diffuseMap, vary_texcoord3.xy);
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col += kern.w * texture2D(diffuseMap, vary_texcoord0.zw);
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col += kern.z * texture2D(diffuseMap, vary_texcoord1.zw);
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col += kern.y * texture2D(diffuseMap, vary_texcoord2.zw);
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col += kern.x * texture2D(diffuseMap, vary_texcoord3.zw);
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frag_color = vec4(col.rgb * glowStrength, col.a);
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}
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