| 1 | /* $Id: VBoxOGL.h 69107 2017-10-17 10:53:48Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * VBox 3D Support API
|
|---|
| 4 | */
|
|---|
| 5 | /*
|
|---|
| 6 | * Copyright (C) 2012-2017 Oracle Corporation
|
|---|
| 7 | *
|
|---|
| 8 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 9 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 10 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 11 | * General Public License (GPL) as published by the Free Software
|
|---|
| 12 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 13 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 14 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 15 | *
|
|---|
| 16 | * The contents of this file may alternatively be used under the terms
|
|---|
| 17 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 18 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 19 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 20 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 21 | *
|
|---|
| 22 | * You may elect to license modified versions of this file under the
|
|---|
| 23 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 24 | */
|
|---|
| 25 | #ifndef ___VBoxOGL_h
|
|---|
| 26 | #define ___VBoxOGL_h
|
|---|
| 27 |
|
|---|
| 28 | #include <iprt/cdefs.h>
|
|---|
| 29 | #include <iprt/types.h>
|
|---|
| 30 |
|
|---|
| 31 | RT_C_DECLS_BEGIN
|
|---|
| 32 |
|
|---|
| 33 | /* GUI and VBox OpenGL code require scaling factor value to be stored in container
|
|---|
| 34 | * of type of 'double'. Communication between them is done via Main. In the same time,
|
|---|
| 35 | * currently, Main does not like type of 'double' to be used for an interface method parameter.
|
|---|
| 36 | * An integer type should be used instead. This value is used in order to specify scaling factor in type
|
|---|
| 37 | * of 'integer' units. It is assumed that GUI feeds Main with its internal scaling factor value
|
|---|
| 38 | * (which is originally of type of 'double') multiplied by this constant and converted resulting
|
|---|
| 39 | * value to type of 'uint32_t'. Then Main provides this data to OpenGL HGCM thread. Finally, VBox OpenGL
|
|---|
| 40 | * code divides received scalar by this constant and converts result to type of 'double'.
|
|---|
| 41 | * This constant can be increased (multiplied by 10^n) in order to get better precision
|
|---|
| 42 | * for scaling factor manipulations. */
|
|---|
| 43 | #define VBOX_OGL_SCALE_FACTOR_MULTIPLIER 10000.0
|
|---|
| 44 |
|
|---|
| 45 | /* 3D content scale factor range bounds. */
|
|---|
| 46 | #define VBOX_OGL_SCALE_FACTOR_MIN 0.01
|
|---|
| 47 | #define VBOX_OGL_SCALE_FACTOR_MAX 10.0
|
|---|
| 48 |
|
|---|
| 49 | bool RTCALL VBoxOglIsOfflineRenderingAppropriate(void);
|
|---|
| 50 | bool RTCALL VBoxOglIs3DAccelerationSupported(void);
|
|---|
| 51 |
|
|---|
| 52 | DECLEXPORT(int) VBoxOglSetScaleFactor(uint32_t idScreen, double dScaleFactorW, double dScaleFactorH);
|
|---|
| 53 |
|
|---|
| 54 | RT_C_DECLS_END
|
|---|
| 55 |
|
|---|
| 56 | #endif /* !___VBoxOGL_h */
|
|---|
