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/****************************************************************************
**
** Copyright (C) 2014 NVIDIA Corporation.
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef FILE_DISPLACEMENT_TEXTURE_GLSLLIB
#define FILE_DISPLACEMENT_TEXTURE_GLSLLIB
#ifdef QT3DS_DEFINE_API
#include "luminance.glsllib"
#include "monoChannel.glsllib"
#include "textureCoordinateInfo.glsllib"
#define wrap_clamp 0
#define wrap_repeat 1
#define wrap_mirrored_repeat 2
#define mono_alpha 0
#define mono_average 1
#define mono_luminance 2
#define mono_maximum 3
#include "rotationTranslationScale.glsllib"
#include "transformCoordinate.glsllib"
#endif
vec3 fileDisplacementTexture( in sampler2D sampler, in float factor, in int displaceSource
, in texture_coordinate_info uvw, in vec3 normal, in vec3 pos )
{
// compute displace factor
float df = monoChannel( texture( sampler, uvw.position.xy ), displaceSource );
return( normal * df * factor + pos );
}
//default material path version
vec3 defaultMaterialFileDisplacementTexture( in sampler2D sampler, in float factor, vec2 texCoord, in vec3 normal, vec3 pos )
{
return fileDisplacementTexture( sampler, factor, mono_luminance
, textureCoordinateInfo( vec3( texCoord.x, texCoord.y, 0.0 ), vec3(1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0) )
, normal, pos );
}
#endif
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