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

canvas/source/opengl/ogl_canvasbitmap.cxx

@@ -0,0 +1,55 @@
+/* -*- 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/.
+ */
+
+#include "ogl_canvasbitmap.hxx"
+
+#include <canvas/debug.hxx>
+#include <canvas/canvastools.hxx>
+#include <tools/diagnose_ex.h>
+
+
+using namespace ::com::sun::star;
+
+namespace oglcanvas
+{
+    CanvasBitmap::CanvasBitmap( const geometry::IntegerSize2D& rSize,
+                                const SpriteCanvasRef&         rDevice,
+                                SpriteDeviceHelper&            rDeviceHelper,
+                                bool                           bHasAlpha ) :
+        mpDevice( rDevice ),
+        mbHasAlpha( bHasAlpha )
+    {
+        ENSURE_OR_THROW( mpDevice.is(),
+                         "CanvasBitmap::CanvasBitmap(): Invalid surface or device" );
+
+        maCanvasHelper.init( *mpDevice.get(), rDeviceHelper, rSize );
+    }
+
+    CanvasBitmap::CanvasBitmap( const CanvasBitmap& rSrc ) :
+        mpDevice( rSrc.mpDevice ),
+        mbHasAlpha( rSrc.mbHasAlpha )
+    {
+        maCanvasHelper = rSrc.maCanvasHelper;
+    }
+
+    void SAL_CALL CanvasBitmap::disposeThis()
+    {
+        mpDevice.clear();
+
+        // forward to parent
+        CanvasBitmapBaseT::disposeThis();
+    }
+
+    bool CanvasBitmap::renderRecordedActions() const
+    {
+        return maCanvasHelper.renderRecordedActions();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */