2 * Copyright (c) 2003-2006 jMonkeyEngine
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3 * All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions are
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9 * * Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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12 * * Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
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17 * may be used to endorse or promote products derived from this software
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18 * without specific prior written permission.
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20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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33 varying vec3 vNormal;
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35 varying float depth;
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37 uniform float nearClip;
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38 uniform float diffClip;
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42 gl_Position = ftransform();
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43 vNormal = (normalize(gl_NormalMatrix * gl_Normal)+1.0)*0.5;
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45 pos = gl_ModelViewMatrix * gl_Vertex;
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46 depth = -(pos.z-nearClip)/diffClip;
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