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-rw-r--r--vcl/opengl/radialGradientFragmentShader.glsl23
1 files changed, 23 insertions, 0 deletions
diff --git a/vcl/opengl/radialGradientFragmentShader.glsl b/vcl/opengl/radialGradientFragmentShader.glsl
new file mode 100644
index 000000000000..94a86eb9510f
--- /dev/null
+++ b/vcl/opengl/radialGradientFragmentShader.glsl
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+/* -*- 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 vec4 start_color;
+uniform vec4 end_color;
+uniform vec2 center;
+varying vec2 tex_coord;
+
+void main(void)
+{
+ gl_FragColor = mix(end_color, start_color,
+ clamp(distance(tex_coord, center), 0.0, 1.0));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */