1 // Created on: 2011-10-20
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
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
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.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _OpenGl_GraphicDriver_HeaderFile
17 #define _OpenGl_GraphicDriver_HeaderFile
19 #include <Graphic3d_GraphicDriver.hxx>
21 #include <Aspect_Display.hxx>
22 #include <Aspect_DisplayConnection.hxx>
23 #include <Aspect_GradientFillMethod.hxx>
24 #include <Aspect_FillMethod.hxx>
25 #include <Aspect_TypeOfTriedronPosition.hxx>
26 #include <Aspect_TypeOfTriedronEcho.hxx>
27 #include <Aspect_Handle.hxx>
28 #include <Aspect_PrintAlgo.hxx>
29 #include <Aspect_RenderingContext.hxx>
31 #include <Graphic3d_CView.hxx>
32 #include <Graphic3d_CStructure.hxx>
33 #include <Graphic3d_TextPath.hxx>
34 #include <Graphic3d_HorizontalTextAlignment.hxx>
35 #include <Graphic3d_VerticalTextAlignment.hxx>
36 #include <Graphic3d_CUserDraw.hxx>
37 #include <Graphic3d_GraduatedTrihedron.hxx>
38 #include <Graphic3d_TypeOfComposition.hxx>
39 #include <Graphic3d_ExportFormat.hxx>
40 #include <Graphic3d_SortType.hxx>
41 #include <Graphic3d_PtrFrameBuffer.hxx>
42 #include <Graphic3d_Array1OfVertex.hxx>
43 #include <Graphic3d_Array2OfVertex.hxx>
44 #include <Graphic3d_BufferType.hxx>
45 #include <NCollection_DataMap.hxx>
46 #include <OpenGl_Context.hxx>
47 #include <OpenGl_MapOfZLayerSettings.hxx>
48 #include <Quantity_PlaneAngle.hxx>
49 #include <Quantity_NameOfColor.hxx>
50 #include <Standard_CString.hxx>
51 #include <TColStd_Array1OfInteger.hxx>
52 #include <TColStd_Array2OfReal.hxx>
53 #include <TColStd_HArray1OfByte.hxx>
54 #include <TColStd_HArray1OfReal.hxx>
55 #include <TColStd_MapOfInteger.hxx>
58 class Graphic3d_Vector;
60 class Graphic3d_Vertex;
61 class TCollection_ExtendedString;
64 class OpenGl_Structure;
69 //! Tool class to implement consistent state counter
70 //! for objects inside the same driver instance.
71 class OpenGl_StateCounter
75 OpenGl_StateCounter() : myCounter (0) { }
77 Standard_Size Increment() { return ++myCounter; }
81 Standard_Size myCounter;
84 class OpenGl_GraphicDriver;
86 DEFINE_STANDARD_HANDLE(OpenGl_GraphicDriver,Graphic3d_GraphicDriver)
88 //! This class defines an OpenGl graphic driver
89 class OpenGl_GraphicDriver : public Graphic3d_GraphicDriver
94 //! @param theDisp connection to display, required on Linux but optional on other systems
95 //! @param theToInitialize perform initialization of default OpenGL context on construction
96 Standard_EXPORT OpenGl_GraphicDriver (const Handle(Aspect_DisplayConnection)& theDisp,
97 const Standard_Boolean theToInitialize = Standard_True);
100 Standard_EXPORT virtual ~OpenGl_GraphicDriver();
102 //! Release default context.
103 Standard_EXPORT void ReleaseContext();
105 //! Perform initialization of default OpenGL context.
106 Standard_EXPORT Standard_Boolean InitContext();
108 #if defined(HAVE_EGL) || defined(__ANDROID__)
109 //! Initialize default OpenGL context using existing one.
110 //! @param theEglDisplay EGL connection to the Display
111 //! @param theEglContext EGL rendering context
112 //! @param theEglConfig EGL configuration
113 Standard_EXPORT Standard_Boolean InitEglContext (Aspect_Display theEglDisplay,
114 Aspect_RenderingContext theEglContext,
118 Standard_EXPORT Standard_Integer InquireLightLimit ();
119 Standard_EXPORT Standard_Integer InquireViewLimit ();
123 Standard_EXPORT virtual Handle(Graphic3d_CStructure) CreateStructure (const Handle(Graphic3d_StructureManager)& theManager) Standard_OVERRIDE;
125 Standard_EXPORT virtual void RemoveStructure (Handle(Graphic3d_CStructure)& theCStructure) Standard_OVERRIDE;
127 Standard_EXPORT virtual Handle(Graphic3d_CView) CreateView (const Handle(Graphic3d_StructureManager)& theMgr) Standard_OVERRIDE;
129 Standard_EXPORT virtual void RemoveView (const Handle(Graphic3d_CView)& theView) Standard_OVERRIDE;
131 Standard_EXPORT virtual Handle(OpenGl_Window) CreateRenderWindow (const Handle(Aspect_Window)& theWindow, const Aspect_RenderingContext theContext);
135 Standard_EXPORT void TextSize (const Standard_CString AText,const Standard_ShortReal AHeight,Standard_ShortReal& AWidth,Standard_ShortReal& AnAscent,Standard_ShortReal& ADescent) const;
137 Standard_EXPORT Standard_Integer InquirePlaneLimit();
139 Standard_EXPORT Standard_ShortReal DefaultTextHeight() const;
141 Standard_EXPORT Standard_Boolean ViewExists (const Handle(Aspect_Window)& theWindow, Handle(Graphic3d_CView)& theView) Standard_OVERRIDE;
145 //! Adds a new top-level z layer with ID theLayerId for all views. Z layers allow drawing structures in higher layers
146 //! in foreground of structures in lower layers. To add a structure to desired layer on display it is necessary to
147 //! set the layer index for the structure. The passed theLayerId should be not less than 0 (reserved for default layers).
148 Standard_EXPORT void AddZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
150 //! Removes Z layer. All structures displayed at the moment in layer will be displayed in
151 //! default layer (the bottom-level z layer). By default, there are always default
152 //! bottom-level layer that can't be removed. The passed theLayerId should be not less than 0
153 //! (reserved for default layers that can not be removed).
154 Standard_EXPORT void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
156 //! Returns list of Z layers defined for the graphical driver.
157 Standard_EXPORT void ZLayers (TColStd_SequenceOfInteger& theLayerSeq) const Standard_OVERRIDE;
159 //! Sets the settings for a single Z layer.
160 Standard_EXPORT void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId, const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
162 //! Returns the settings of a single Z layer.
163 Standard_EXPORT virtual Graphic3d_ZLayerSettings ZLayerSettings (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
167 //! @return the visualization options
168 inline const OpenGl_Caps& Options() const
170 return *myCaps.operator->();
173 //! @return the visualization options
174 inline OpenGl_Caps& ChangeOptions()
176 return *myCaps.operator->();
179 //! Specify swap buffer behavior.
180 Standard_EXPORT void SetBuffersNoSwap (const Standard_Boolean theIsNoSwap);
182 //! VBO usage can be forbidden by this method even if it is supported by GL driver.
183 //! Notice that disabling of VBO will cause rendering performance degradation.
184 //! Warning! This method should be called only before any primitives are displayed in GL scene!
185 Standard_EXPORT void EnableVBO (const Standard_Boolean theToTurnOn);
187 //! Returns information about GPU memory usage.
188 //! Please read OpenGl_Context::MemoryInfo() for more description.
189 Standard_EXPORT Standard_Boolean MemoryInfo (Standard_Size& theFreeBytes,
190 TCollection_AsciiString& theInfo) const;
192 //! UserDraw function prototype
193 typedef OpenGl_Element* (*OpenGl_UserDrawCallback_t )(const CALL_DEF_USERDRAW* );
195 //! Method to setup UserDraw callback
196 Standard_EXPORT OpenGl_UserDrawCallback_t& UserDrawCallback();
200 //! Method to retrieve valid GL context.
201 //! Could return NULL-handle if no window created by this driver.
202 Standard_EXPORT const Handle(OpenGl_Context)& GetSharedContext() const;
204 #if defined(HAVE_EGL) || defined(__ANDROID__)
205 Aspect_Display getRawGlDisplay() const { return myEglDisplay; }
206 Aspect_RenderingContext getRawGlContext() const { return myEglContext; }
207 void* getRawGlConfig() const { return myEglConfig; }
212 DEFINE_STANDARD_RTTI(OpenGl_GraphicDriver, Graphic3d_GraphicDriver)
216 Standard_Boolean myIsOwnContext; //!< indicates that shared context has been created within OpenGl_GraphicDriver
217 #if defined(HAVE_EGL) || defined(__ANDROID__)
218 Aspect_Display myEglDisplay; //!< EGL connection to the Display : EGLDisplay
219 Aspect_RenderingContext myEglContext; //!< EGL rendering context : EGLContext
220 void* myEglConfig; //!< EGL configuration : EGLConfig
223 Handle(OpenGl_Caps) myCaps;
224 NCollection_Map<Handle(OpenGl_View)> myMapOfView;
225 NCollection_DataMap<Standard_Integer, OpenGl_Structure*> myMapOfStructure;
226 OpenGl_UserDrawCallback_t myUserDrawCallback;
230 TColStd_MapOfInteger myLayerIds;
231 TColStd_SequenceOfInteger myLayerSeq;
232 OpenGl_MapOfZLayerSettings myMapOfZLayerSettings;
236 //! State counter for OpenGl structures.
237 OpenGl_StateCounter* GetStateCounter() const { return &myStateCounter; }
239 //! Returns unique ID for primitive arrays.
240 const Standard_Size GetNextPrimitiveArrayUID() const { return myUIDGenerator.Increment(); }
244 mutable OpenGl_StateCounter myStateCounter; //!< State counter for OpenGl structures.
245 mutable OpenGl_StateCounter myUIDGenerator; //!< Unique ID counter for primitive arrays.
249 #endif //_OpenGl_GraphicDriver_HeaderFile