Add opengl canvas implementation.

Adds opengl canvas implementation - display-list-based, all
rendering done as textured geometry. Needs shader support.

Currently compiles and works on Linux, Mac should be ~easy to
add, win32 eventually.

Change-Id: Ibf3eb88d6a36a91b2960a3a6320d708160e4fc14

1 files changed, 31 insertions, 0 deletions

diff --git a/canvas/source/opengl/ogl_tools.hxx b/canvas/source/opengl/ogl_tools.hxx
new file mode 100644
index 000000000000..d61ab45dd447
--- /dev/null
+++ b/canvas/source/opengl/ogl_tools.hxx
@@ -0,0 +1,31 @@
+/* -*- 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/.
+ */
+
+#ifndef OGL_CANVAS_TOOLS_HXX
+#define OGL_CANVAS_TOOLS_HXX
+
+#include <sal/config.h>
+#include <GL/gl.h>
+
+
+namespace oglcanvas
+{
+    struct TransformationPreserver
+    {
+        TransformationPreserver()
+        { glPushMatrix(); }
+
+        ~TransformationPreserver()
+        { glPopMatrix(); }
+    };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */