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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the QtQuick3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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 1.1, 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
// This is equivilent to GL_REPLACE
varying highp vec4 qt_TexCoord0;
uniform mediump sampler2D texture;
uniform mediump mat4 textureMatrix;
varying highp vec4 onScreenPosition;
varying highp vec4 lightScreenPosition;
varying highp vec4 worldSpaceVertex;
varying float lightDepth;
varying float actualDepth;
void main(void)
{
// I should be able to build a matrix to do this:
// vec4 normalizedOnScreenPosition = (onScreenPosition + 5.0) / 10.0;
vec4 normalizedLightScreenPosition = (((lightScreenPosition
//+ lightScreenPosition.w
) / lightScreenPosition.w ) + 1.0) / 2.0;
// float lightMapDepth = texture2D(texture, normalizedLightScreenPosition.st).z;
float lightMapDepth = texture2D(texture, normalizedLightScreenPosition.st ).z;
// gl_FragColor = vec4(lightMapDepth, lightMapDepth, lightMapDepth, 1.0);
// gl_FragColor = vec4(normalizedLightScreenPosition.st,0.0,1.0);
// float lightActualDepth = normalizedLightScreenPosition.z;
float lightActualDepth = lightDepth;
// gl_FragColor = vec4(lightActualDepth, lightActualDepth, lightActualDepth, 1.0);
float lightActualDepthWithStupidMaths = (lightActualDepth + 10.0) / 20.0;
float lightDepthWithStupidMaths = (lightDepth + 10.0) / 20.0;
// gl_FragColor = vec4(vec3(lightActualDepthWithStupidMaths), 1.0);
// if (lightActualDepthWithStupidMaths > lightMapDepth )
// gl_FragColor = vec4(0.2, 0.2, 0.2, 1.0);
// else
gl_FragColor = vec4(1.0, 1.0, 0.5, 1.0);
// gl_FragColor = vec4(lightDepthWithStupidMaths, lightDepthWithStupidMaths, lightDepthWithStupidMaths, 1.0);
//float stupidMathslightDepth = (lightDepth + 10.0) / 20;
//gl_FragColor = vec4(stupidMathslightDepth, stupidMathslightDepth, stupidMathslightDepth, 1.0);
//float stupidMathsActualDepth = (actualDepth + 10.0) / 20.0;
//gl_FragColor = vec4(stupidMathsActualDepth, stupidMathsActualDepth, stupidMathsActualDepth, 1.0);
};
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