Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/slideshow/opengl/fadeFragmentShader.glsl b/slideshow/opengl/fadeFragmentShader.glsl
new file mode 100644
index 000000000..0751b6ecd
--- /dev/null
+++ b/slideshow/opengl/fadeFragmentShader.glsl
@@ -0,0 +1,23 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#version 120
+
+uniform sampler2D leavingSlideTexture;
+uniform sampler2D enteringSlideTexture;
+uniform float time;
+varying vec2 v_texturePosition;
+
+void main() {
+    vec4 leavingFragment = texture2D(leavingSlideTexture, v_texturePosition);
+    vec4 enteringFragment = texture2D(enteringSlideTexture, v_texturePosition);
+    gl_FragColor = mix(leavingFragment, enteringFragment, time);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */