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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
varying vec3 position, normal;
varying vec4 specular, ambient, diffuse, lightDirection;
uniform sampler2D tex;
uniform samplerCube env;
uniform mat4 view;
uniform vec4 basicColor;
void main()
{
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);
vec3 absN = abs(gl_TexCoord[1].xyz);
vec3 texCoord;
if (absN.x > absN.y && absN.x > absN.z)
texCoord = gl_TexCoord[1].yzx;
else if (absN.y > absN.z)
texCoord = gl_TexCoord[1].zxy;
else
texCoord = gl_TexCoord[1].xyz;
texCoord.y *= -sign(texCoord.z);
texCoord += 0.5;
vec4 texColor = texture2D(tex, texCoord.xy);
vec4 unlitColor = gl_Color * mix(basicColor, vec4(texColor.xyz, 1.0), texColor.w);
vec4 litColor = (ambient + diffuse * max(NdotL, 0.0)) * unlitColor +
M.specular * specular * pow(max(RdotL, 0.0), M.shininess);
vec3 R = 2.0 * dot(-position, N) * N + position;
vec4 reflectedColor = textureCube(env, R * mat3(view[0].xyz, view[1].xyz, view[2].xyz));
gl_FragColor = mix(litColor, reflectedColor, 0.2 + 0.8 * pow(1.0 + dot(N, normalize(position)), 2.0));
}
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