| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the demonstration applications of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
| ** |
| ** "Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are |
| ** met: |
| ** * Redistributions of source code must retain the above copyright |
| ** notice, this list of conditions and the following disclaimer. |
| ** * Redistributions in binary form must reproduce the above copyright |
| ** notice, this list of conditions and the following disclaimer in |
| ** the documentation and/or other materials provided with the |
| ** distribution. |
| ** * Neither the name of The Qt Company Ltd nor the names of its |
| ** contributors may be used to endorse or promote products derived |
| ** from this software without specific prior written permission. |
| ** |
| ** |
| ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| varying vec3 position, normal; |
| varying vec4 specular, ambient, diffuse, lightDirection; |
| |
| uniform sampler2D tex; |
| uniform sampler3D noise; |
| |
| //const vec4 woodColors[2] = {vec4(0.37,0.24,0.20,1), vec4(0.8,0.6,0.4,1)}; |
| uniform vec4 woodColors[2]; |
| //const float woodTubulence = 0.1; |
| uniform float woodTubulence; |
| |
| void main() |
| { |
| float r = length(gl_TexCoord[1].yz); |
| r += woodTubulence * texture3D(noise, 0.25 * gl_TexCoord[1].xyz).x; |
| |
| vec3 N = normalize(normal); |
| // assume directional light |
| |
| gl_MaterialParameters M = gl_FrontMaterial; |
| |
| float NdotL = dot(N, lightDirection.xyz); |
| float RdotL = dot(reflect(normalize(position), N), lightDirection.xyz); |
| |
| float f = fract(16.0 * r); |
| vec4 unlitColor = mix(woodColors[0], woodColors[1], min(1.25 * f, 5.0 - 5.0 * f)); |
| gl_FragColor = (ambient + diffuse * max(NdotL, 0.0)) * unlitColor + |
| M.specular * specular * pow(max(RdotL, 0.0), M.shininess); |
| } |