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+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#version 300 es
+
+precision highp float;
+
+uniform mat4 viewMatrix;
+
+uniform vec3 lightPosition;
+uniform vec3 lightIntensity;
+
+uniform vec3 ka; // Ambient reflectivity
+uniform vec3 kd; // Diffuse reflectivity
+uniform vec3 ks; // Specular reflectivity
+uniform float shininess; // Specular shininess factor
+
+uniform sampler2DShadow shadowMapTexture;
+
+in vec4 positionInLightSpace;
+
+in vec3 position;
+in vec3 normal;
+
+out vec4 fragColor;
+
+vec3 dsModel(const in vec3 pos, const in vec3 n)
+{
+ // Calculate the vector from the light to the fragment
+ vec3 s = normalize(vec3(viewMatrix * vec4(lightPosition, 1.0)) - pos);
+
+ // Calculate the vector from the fragment to the eye position
+ // (origin since this is in "eye" or "camera" space)
+ vec3 v = normalize(-pos);
+
+ // Reflect the light beam using the normal at this fragment
+ vec3 r = reflect(-s, n);
+
+ // Calculate the diffuse component
+ float diffuse = max(dot(s, n), 0.0);
+
+ // Calculate the specular component
+ float specular = 0.0;
+ if (dot(s, n) > 0.0)
+ specular = pow(max(dot(r, v), 0.0), shininess);
+
+ // Combine the diffuse and specular contributions (ambient is taken into account by the caller)
+ return lightIntensity * (kd * diffuse + ks * specular);
+}
+
+void main()
+{
+ float shadowMapSample = textureProj(shadowMapTexture, positionInLightSpace);
+
+ vec3 ambient = lightIntensity * ka;
+
+ vec3 result = ambient;
+ if (shadowMapSample > 0.0)
+ result += dsModel(position, normalize(normal));
+
+ fragColor = vec4(result, 1.0);
+}