Adding upstream version 6.1.22-dfsg.upstream/6.1.22-dfsgupstream

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

1 files changed, 60 insertions, 0 deletions

diff --git a/include/VBox/VBoxOGL.h b/include/VBox/VBoxOGL.h
new file mode 100644
index 00000000..d35ae9c8
--- /dev/null
+++ b/include/VBox/VBoxOGL.h
@@ -0,0 +1,60 @@
+/* $Id: VBoxOGL.h $ */
+/** @file
+ * VBox 3D Support API
+ */
+/*
+ * Copyright (C) 2012-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef VBOX_INCLUDED_VBoxOGL_h
+#define VBOX_INCLUDED_VBoxOGL_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+
+RT_C_DECLS_BEGIN
+
+/* GUI and VBox OpenGL code require scaling factor value to be stored in container
+ * of type of 'double'. Communication between them is done via Main. In the same time,
+ * currently, Main does not like type of 'double' to be used for an interface method parameter.
+ * An integer type should be used instead. This value is used in order to specify scaling factor in type
+ * of 'integer' units. It is assumed that GUI feeds Main with its internal scaling factor value
+ * (which is originally of type of 'double') multiplied by this constant and converted resulting
+ * value to type of 'uint32_t'. Then Main provides this data to OpenGL HGCM thread. Finally, VBox OpenGL
+ * code divides received scalar by this constant and converts result to type of 'double'.
+ * This constant can be increased (multiplied by 10^n) in order to get better precision
+ * for scaling factor manipulations. */
+#define VBOX_OGL_SCALE_FACTOR_MULTIPLIER    10000.0
+
+/* 3D content scale factor range bounds. */
+#define VBOX_OGL_SCALE_FACTOR_MIN           0.01
+#define VBOX_OGL_SCALE_FACTOR_MAX           10.0
+
+bool RTCALL VBoxOglIsOfflineRenderingAppropriate(void);
+bool RTCALL VBoxOglIs3DAccelerationSupported(void);
+
+DECLEXPORT(int) VBoxOglSetScaleFactor(uint32_t idScreen, double dScaleFactorW, double dScaleFactorH);
+
+RT_C_DECLS_END
+
+#endif /* !VBOX_INCLUDED_VBoxOGL_h */