Initial import

1 files changed, 42 insertions, 0 deletions

diff --git a/src/Runtime/res/effectlib/directionalFactor.glsllib b/src/Runtime/res/effectlib/directionalFactor.glsllib
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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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+vec4 directionalFactor( in vec3 normal, in vec3 viewDir, in vec3 normal_col, in vec3 grazing_col, in float exponent, in vec4 base )
+{
+	float f;
+
+	f = clamp(dot(viewDir, normal),0.0, 1.0 );
+	f = 1.0 - pow(f, 1.0/exponent);
+	vec3 directionalColor = mix( normal_col, grazing_col, f ); 
+
+	vec4 color = base * vec4(directionalColor, 1.0); 
+
+	return color; 
+}
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