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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the demonstration applications of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    40 ****************************************************************************/

    41 

    42 varying vec3 position, normal;

    43 varying vec4 specular, ambient, diffuse, lightDirection;

    44 

    45 uniform sampler2D tex;

    46 uniform samplerCube env;

    47 uniform mat4 view;

    48 uniform vec4 basicColor;

    49 

    50 void main()

    51 {

    52     vec3 N = normalize(normal);

    53     // assume directional light

    54 

    55     gl_MaterialParameters M = gl_FrontMaterial;

    56 

    57     float NdotL = dot(N, lightDirection.xyz);

    58     float RdotL = dot(reflect(normalize(position), N), lightDirection.xyz);

    59 

    60     vec3 absN = abs(gl_TexCoord[1].xyz);

    61     vec3 texCoord;

    62     if (absN.x > absN.y && absN.x > absN.z)

    63         texCoord = gl_TexCoord[1].yzx;

    64     else if (absN.y > absN.z)

    65         texCoord = gl_TexCoord[1].zxy;

    66     else

    67         texCoord = gl_TexCoord[1].xyz;

    68     texCoord.y *= -sign(texCoord.z);

    69     texCoord += 0.5;

    70 

    71     vec4 texColor = texture2D(tex, texCoord.xy);

    72     vec4 unlitColor = gl_Color * mix(basicColor, vec4(texColor.xyz, 1.0), texColor.w);

    73     vec4 litColor = (ambient + diffuse * max(NdotL, 0.0)) * unlitColor +

    74                      M.specular * specular * pow(max(RdotL, 0.0), M.shininess);

    75 

    76     vec3 R = 2.0 * dot(-position, N) * N + position;

    77     vec4 reflectedColor = textureCube(env, R * mat3(view[0].xyz, view[1].xyz, view[2].xyz));

    78     gl_FragColor = mix(litColor, reflectedColor, 0.2 + 0.8 * pow(1.0 + dot(N, normalize(position)), 2.0));

    79 }