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b311480e | 1 | // Created on: 2011-10-20 |
2 | // Created by: Sergey ZERCHANINOV | |
973c2be1 | 3 | // Copyright (c) 2011-2014 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
2166f0fa SK |
16 | #ifndef _OpenGl_GraphicDriver_HeaderFile |
17 | #define _OpenGl_GraphicDriver_HeaderFile | |
18 | ||
19 | #include <Graphic3d_GraphicDriver.hxx> | |
2166f0fa SK |
20 | |
21 | #include <Aspect_Display.hxx> | |
dc3fe572 | 22 | #include <Aspect_DisplayConnection.hxx> |
c357e426 | 23 | #include <Aspect_RenderingContext.hxx> |
2166f0fa SK |
24 | #include <Graphic3d_CView.hxx> |
25 | #include <Graphic3d_CStructure.hxx> | |
2166f0fa | 26 | #include <NCollection_DataMap.hxx> |
c357e426 | 27 | #include <OpenGl_Context.hxx> |
b7c077b9 | 28 | |
c357e426 | 29 | class Aspect_Window; |
2166f0fa | 30 | class Quantity_Color; |
2166f0fa | 31 | class OpenGl_Structure; |
c04c30b3 | 32 | class OpenGl_View; |
c357e426 | 33 | class OpenGl_Window; |
2166f0fa | 34 | |
392ac980 | 35 | //! Tool class to implement consistent state counter |
36 | //! for objects inside the same driver instance. | |
37 | class OpenGl_StateCounter | |
38 | { | |
39 | public: | |
40 | ||
41 | OpenGl_StateCounter() : myCounter (0) { } | |
42 | ||
43 | Standard_Size Increment() { return ++myCounter; } | |
44 | ||
45 | private: | |
25b97fac | 46 | |
392ac980 | 47 | Standard_Size myCounter; |
48 | }; | |
49 | ||
ebc93ae7 | 50 | //! This class defines an OpenGl graphic driver |
2166f0fa SK |
51 | class OpenGl_GraphicDriver : public Graphic3d_GraphicDriver |
52 | { | |
851dacdb | 53 | DEFINE_STANDARD_RTTIEXT(OpenGl_GraphicDriver, Graphic3d_GraphicDriver) |
bf75be98 | 54 | public: |
2166f0fa | 55 | |
25b97fac | 56 | //! Constructor. |
57 | //! @param theDisp connection to display, required on Linux but optional on other systems | |
05e2200b | 58 | //! @param theToInitialize perform initialization of default OpenGL context on construction |
25b97fac | 59 | Standard_EXPORT OpenGl_GraphicDriver (const Handle(Aspect_DisplayConnection)& theDisp, |
05e2200b | 60 | const Standard_Boolean theToInitialize = Standard_True); |
61 | ||
62 | //! Destructor. | |
63 | Standard_EXPORT virtual ~OpenGl_GraphicDriver(); | |
64 | ||
65 | //! Release default context. | |
66 | Standard_EXPORT void ReleaseContext(); | |
67 | ||
68 | //! Perform initialization of default OpenGL context. | |
69 | Standard_EXPORT Standard_Boolean InitContext(); | |
70 | ||
1ce0716b | 71 | #if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__) |
05e2200b | 72 | //! Initialize default OpenGL context using existing one. |
73 | //! @param theEglDisplay EGL connection to the Display | |
74 | //! @param theEglContext EGL rendering context | |
75 | //! @param theEglConfig EGL configuration | |
76 | Standard_EXPORT Standard_Boolean InitEglContext (Aspect_Display theEglDisplay, | |
77 | Aspect_RenderingContext theEglContext, | |
78 | void* theEglConfig); | |
79 | #endif | |
65993a95 | 80 | |
3bffef55 | 81 | //! Request limit of graphic resource of specific type. |
82 | Standard_EXPORT virtual Standard_Integer InquireLimit (const Graphic3d_TypeOfLimit theType) const Standard_OVERRIDE; | |
2166f0fa | 83 | |
c357e426 | 84 | public: |
2166f0fa | 85 | |
c357e426 | 86 | Standard_EXPORT virtual Handle(Graphic3d_CStructure) CreateStructure (const Handle(Graphic3d_StructureManager)& theManager) Standard_OVERRIDE; |
2166f0fa | 87 | |
c357e426 | 88 | Standard_EXPORT virtual void RemoveStructure (Handle(Graphic3d_CStructure)& theCStructure) Standard_OVERRIDE; |
679ecdee | 89 | |
c357e426 | 90 | Standard_EXPORT virtual Handle(Graphic3d_CView) CreateView (const Handle(Graphic3d_StructureManager)& theMgr) Standard_OVERRIDE; |
2166f0fa | 91 | |
c357e426 | 92 | Standard_EXPORT virtual void RemoveView (const Handle(Graphic3d_CView)& theView) Standard_OVERRIDE; |
93 | ||
94 | Standard_EXPORT virtual Handle(OpenGl_Window) CreateRenderWindow (const Handle(Aspect_Window)& theWindow, const Aspect_RenderingContext theContext); | |
95 | ||
96 | public: | |
a79f67f8 | 97 | |
4b1c8733 | 98 | Standard_EXPORT void TextSize (const Handle(Graphic3d_CView)& theView, |
99 | const Standard_CString theText, | |
100 | const Standard_ShortReal theHeight, | |
101 | Standard_ShortReal& theWidth, | |
102 | Standard_ShortReal& theAscent, | |
79104795 | 103 | Standard_ShortReal& theDescent) const Standard_OVERRIDE; |
ebc93ae7 | 104 | |
79104795 | 105 | Standard_EXPORT Standard_ShortReal DefaultTextHeight() const Standard_OVERRIDE; |
ebc93ae7 | 106 | |
c357e426 | 107 | Standard_EXPORT Standard_Boolean ViewExists (const Handle(Aspect_Window)& theWindow, Handle(Graphic3d_CView)& theView) Standard_OVERRIDE; |
ebc93ae7 | 108 | |
c357e426 | 109 | public: |
ebc93ae7 | 110 | |
c357e426 | 111 | //! Adds a new top-level z layer with ID theLayerId for all views. Z layers allow drawing structures in higher layers |
112 | //! in foreground of structures in lower layers. To add a structure to desired layer on display it is necessary to | |
113 | //! set the layer index for the structure. The passed theLayerId should be not less than 0 (reserved for default layers). | |
114 | Standard_EXPORT void AddZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE; | |
ebc93ae7 | 115 | |
c357e426 | 116 | //! Removes Z layer. All structures displayed at the moment in layer will be displayed in |
117 | //! default layer (the bottom-level z layer). By default, there are always default | |
118 | //! bottom-level layer that can't be removed. The passed theLayerId should be not less than 0 | |
119 | //! (reserved for default layers that can not be removed). | |
120 | Standard_EXPORT void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE; | |
ebc93ae7 | 121 | |
c357e426 | 122 | //! Sets the settings for a single Z layer. |
123 | Standard_EXPORT void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId, const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE; | |
c5751993 | 124 | |
2166f0fa SK |
125 | public: |
126 | ||
58655684 | 127 | //! @return the visualization options |
128 | inline const OpenGl_Caps& Options() const | |
129 | { | |
130 | return *myCaps.operator->(); | |
131 | } | |
132 | ||
133 | //! @return the visualization options | |
134 | inline OpenGl_Caps& ChangeOptions() | |
135 | { | |
136 | return *myCaps.operator->(); | |
137 | } | |
2166f0fa | 138 | |
62e1beed | 139 | //! Specify swap buffer behavior. |
140 | Standard_EXPORT void SetBuffersNoSwap (const Standard_Boolean theIsNoSwap); | |
141 | ||
2166f0fa SK |
142 | //! VBO usage can be forbidden by this method even if it is supported by GL driver. |
143 | //! Notice that disabling of VBO will cause rendering performance degradation. | |
144 | //! Warning! This method should be called only before any primitives are displayed in GL scene! | |
79104795 | 145 | Standard_EXPORT void EnableVBO (const Standard_Boolean theToTurnOn) Standard_OVERRIDE; |
2166f0fa | 146 | |
f0430952 | 147 | //! Returns information about GPU memory usage. |
148 | //! Please read OpenGl_Context::MemoryInfo() for more description. | |
149 | Standard_EXPORT Standard_Boolean MemoryInfo (Standard_Size& theFreeBytes, | |
79104795 | 150 | TCollection_AsciiString& theInfo) const Standard_OVERRIDE; |
f0430952 | 151 | |
e276548b | 152 | public: |
e276548b | 153 | |
5e27df78 | 154 | //! Method to retrieve valid GL context. |
155 | //! Could return NULL-handle if no window created by this driver. | |
156 | Standard_EXPORT const Handle(OpenGl_Context)& GetSharedContext() const; | |
2166f0fa | 157 | |
1ce0716b | 158 | #if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__) |
25b97fac | 159 | Aspect_Display getRawGlDisplay() const { return myEglDisplay; } |
160 | Aspect_RenderingContext getRawGlContext() const { return myEglContext; } | |
161 | void* getRawGlConfig() const { return myEglConfig; } | |
162 | #endif | |
163 | ||
851dacdb | 164 | //! Set device lost flag for redrawn views. |
165 | Standard_EXPORT void setDeviceLost(); | |
5e27df78 | 166 | |
99cfc277 | 167 | public: |
168 | ||
169 | //! State counter for OpenGl structures. | |
170 | OpenGl_StateCounter* GetStateCounter() const { return &myStateCounter; } | |
171 | ||
172 | //! Returns unique ID for primitive arrays. | |
173 | Standard_Size GetNextPrimitiveArrayUID() const { return myUIDGenerator.Increment(); } | |
174 | ||
62e1beed | 175 | protected: |
5e27df78 | 176 | |
05e2200b | 177 | Standard_Boolean myIsOwnContext; //!< indicates that shared context has been created within OpenGl_GraphicDriver |
1ce0716b | 178 | #if defined(HAVE_EGL) || defined(HAVE_GLES2) || defined(OCCT_UWP) || defined(__ANDROID__) || defined(__QNX__) |
05e2200b | 179 | Aspect_Display myEglDisplay; //!< EGL connection to the Display : EGLDisplay |
180 | Aspect_RenderingContext myEglContext; //!< EGL rendering context : EGLContext | |
181 | void* myEglConfig; //!< EGL configuration : EGLConfig | |
25b97fac | 182 | #endif |
183 | ||
99cfc277 | 184 | Handle(OpenGl_Caps) myCaps; |
185 | NCollection_Map<Handle(OpenGl_View)> myMapOfView; | |
186 | NCollection_DataMap<Standard_Integer, OpenGl_Structure*> myMapOfStructure; | |
c357e426 | 187 | |
8d3f219f | 188 | mutable OpenGl_StateCounter myStateCounter; //!< State counter for OpenGl structures. |
189 | mutable OpenGl_StateCounter myUIDGenerator; //!< Unique ID counter for primitive arrays. | |
392ac980 | 190 | |
2166f0fa SK |
191 | }; |
192 | ||
851dacdb | 193 | DEFINE_STANDARD_HANDLE(OpenGl_GraphicDriver, Graphic3d_GraphicDriver) |
194 | ||
2166f0fa | 195 | #endif //_OpenGl_GraphicDriver_HeaderFile |