1 files changed, 50 insertions, 0 deletions
diff --git a/slideshow/opengl/dissolveFragmentShader.glsl b/slideshow/opengl/dissolveFragmentShader.glsl
new file mode 100644
index 000000000..c0fdbf441
--- /dev/null
+++ b/slideshow/opengl/dissolveFragmentShader.glsl
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#version 120
+
+uniform sampler2D leavingSlideTexture;
+uniform sampler2D enteringSlideTexture;
+uniform sampler2D permTexture;
+uniform float time;
+varying vec2 v_texturePosition;
+
+float snoise(vec2 P) {
+
+  return texture2D(permTexture, P).r;
+}
+
+void main() {
+     float sn = snoise(10.0*v_texturePosition);
+     if( sn < time)
+         gl_FragColor = texture2D(enteringSlideTexture, v_texturePosition);
+     else
+         gl_FragColor = texture2D(leavingSlideTexture, v_texturePosition);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */