1 files changed, 70 insertions, 0 deletions
diff --git a/examples/widgets/graphicsview/boxes/refraction.fsh b/examples/widgets/graphicsview/boxes/refraction.fsh
new file mode 100644
index 0000000000..5411478ea2
--- /dev/null
+++ b/examples/widgets/graphicsview/boxes/refraction.fsh
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the demonstration applications 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.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+varying vec3 position, normal;
+varying vec4 specular, ambient, diffuse, lightDirection;
+
+uniform sampler2D tex;
+uniform samplerCube env;
+uniform mat4 view;
+
+// Arrays don't work here on glsl < 120, apparently.
+//const float coeffs[6] = float[6](1.0/2.0, 1.0/2.1, 1.0/2.2, 1.0/2.3, 1.0/2.4, 1.0/2.5);
+float coeffs(int i)
+{
+	return 1.0 / (2.0 + 0.1 * float(i));
+}
+
+void main()
+{
+    vec3 N = normalize(normal);
+    vec3 I = -normalize(position);
+    float IdotN = dot(I, N);
+    float scales[6];
+    vec3 C[6];
+    for (int i = 0; i < 6; ++i) {
+        scales[i] = (IdotN - sqrt(1.0 - coeffs(i) + coeffs(i) * (IdotN * IdotN)));
+        C[i] = textureCube(env, (-I + coeffs(i) * N) * mat3(view[0].xyz, view[1].xyz, view[2].xyz)).xyz;
+    }
+
+    gl_FragColor = 0.25 * vec4(C[5].x + 2.0*C[0].x + C[1].x, C[1].y + 2.0*C[2].y + C[3].y,
+                   C[3].z + 2.0*C[4].z + C[5].z, 4.0);
+}