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>
20 #include <OpenGl_Context.hxx>
21 #include <OpenGl_PrinterContext.hxx>
23 #include <Standard_CString.hxx>
25 #include <TColStd_HArray1OfByte.hxx>
26 #include <TColStd_HArray1OfReal.hxx>
27 #include <Quantity_PlaneAngle.hxx>
28 #include <Quantity_NameOfColor.hxx>
30 #include <Aspect_Display.hxx>
31 #include <Aspect_DisplayConnection.hxx>
32 #include <Aspect_GradientFillMethod.hxx>
33 #include <Aspect_FillMethod.hxx>
34 #include <Aspect_TypeOfTriedronPosition.hxx>
35 #include <Aspect_TypeOfTriedronEcho.hxx>
36 #include <Aspect_Handle.hxx>
37 #include <Aspect_PrintAlgo.hxx>
39 #include <Graphic3d_CView.hxx>
40 #include <Graphic3d_CStructure.hxx>
41 #include <Graphic3d_TextPath.hxx>
42 #include <Graphic3d_HorizontalTextAlignment.hxx>
43 #include <Graphic3d_VerticalTextAlignment.hxx>
44 #include <Graphic3d_CUserDraw.hxx>
45 #include <Graphic3d_GraduatedTrihedron.hxx>
46 #include <Graphic3d_TypeOfComposition.hxx>
47 #include <Graphic3d_ExportFormat.hxx>
48 #include <Graphic3d_SortType.hxx>
49 #include <Graphic3d_PtrFrameBuffer.hxx>
50 #include <Graphic3d_Array1OfVertex.hxx>
51 #include <Graphic3d_Array2OfVertex.hxx>
52 #include <Graphic3d_BufferType.hxx>
53 #include <NCollection_DataMap.hxx>
55 #include <TColStd_Array1OfInteger.hxx>
56 #include <TColStd_HArray1OfReal.hxx>
57 #include <TColStd_Array2OfReal.hxx>
58 #include <TColStd_HArray1OfByte.hxx>
60 class Graphic3d_Vector;
62 class Graphic3d_Vertex;
63 class TCollection_ExtendedString;
66 class OpenGl_Structure;
70 //! Tool class to implement consistent state counter
71 //! for objects inside the same driver instance.
72 class OpenGl_StateCounter
76 OpenGl_StateCounter() : myCounter (0) { }
78 Standard_Size Increment() { return ++myCounter; }
82 Standard_Size myCounter;
85 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 ();
121 public: // Methods for graphical structures
123 Standard_EXPORT void DisplayStructure (const Graphic3d_CView& theCView,
124 const Handle(Graphic3d_Structure)& theStructure,
125 const Standard_Integer thePriority);
126 Standard_EXPORT void EraseStructure (const Graphic3d_CView& theCView,
127 const Handle(Graphic3d_Structure)& theStructure);
128 Standard_EXPORT void RemoveStructure (Handle(Graphic3d_CStructure)& theCStructure);
129 Standard_EXPORT Handle(Graphic3d_CStructure) Structure (const Handle(Graphic3d_StructureManager)& theManager);
131 Standard_EXPORT Standard_Boolean SetImmediateModeDrawToFront (const Graphic3d_CView& theCView,
132 const Standard_Boolean theDrawToFrontBuffer);
136 Standard_EXPORT void ActivateView (const Graphic3d_CView& ACView);
137 Standard_EXPORT void AntiAliasing (const Graphic3d_CView& ACView, const Standard_Boolean AFlag);
138 Standard_EXPORT void Background (const Graphic3d_CView& ACView);
139 Standard_EXPORT void GradientBackground (const Graphic3d_CView& ACView, const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod FillStyle);
140 Standard_EXPORT void BackgroundImage (const Standard_CString FileName, const Graphic3d_CView& ACView, const Aspect_FillMethod FillStyle);
141 Standard_EXPORT void SetBgImageStyle (const Graphic3d_CView& ACView, const Aspect_FillMethod FillStyle);
142 Standard_EXPORT void SetBgGradientStyle (const Graphic3d_CView& ACView, const Aspect_GradientFillMethod FillStyle);
143 Standard_EXPORT void ClipLimit (const Graphic3d_CView& ACView, const Standard_Boolean AWait);
144 Standard_EXPORT void DeactivateView (const Graphic3d_CView& ACView);
145 Standard_EXPORT void DepthCueing (const Graphic3d_CView& ACView, const Standard_Boolean AFlag);
146 Standard_EXPORT void RatioWindow (const Graphic3d_CView& ACView);
147 Standard_EXPORT void Redraw (const Graphic3d_CView& theCView,
148 const Standard_Integer theX = 0,
149 const Standard_Integer theY = 0,
150 const Standard_Integer theWidth = 0,
151 const Standard_Integer theHeight = 0);
152 Standard_EXPORT void RedrawImmediate (const Graphic3d_CView& theCView);
153 Standard_EXPORT void Invalidate (const Graphic3d_CView& theCView);
154 Standard_EXPORT Standard_Boolean IsInvalidated (const Graphic3d_CView& theCView) const;
155 Standard_EXPORT void RemoveView (const Graphic3d_CView& ACView);
156 Standard_EXPORT void SetLight (const Graphic3d_CView& ACView);
157 Standard_EXPORT void SetClipPlanes (const Graphic3d_CView& theCView);
158 Standard_EXPORT void SetCamera (const Graphic3d_CView& theCView);
159 Standard_EXPORT void SetVisualisation (const Graphic3d_CView& ACView);
160 Standard_EXPORT Standard_Boolean View (Graphic3d_CView& ACView);
161 Standard_EXPORT void Environment (const Graphic3d_CView& ACView);
162 Standard_EXPORT void ZBufferTriedronSetup (const Graphic3d_CView& theCView,
163 const Quantity_NameOfColor XColor = Quantity_NOC_RED,
164 const Quantity_NameOfColor YColor = Quantity_NOC_GREEN,
165 const Quantity_NameOfColor ZColor = Quantity_NOC_BLUE1,
166 const Standard_Real SizeRatio = 0.8,
167 const Standard_Real AxisDiametr = 0.05,
168 const Standard_Integer NbFacettes = 12);
169 Standard_EXPORT void TriedronDisplay (const Graphic3d_CView& ACView, const Aspect_TypeOfTriedronPosition APosition = Aspect_TOTP_CENTER, const Quantity_NameOfColor AColor = Quantity_NOC_WHITE, const Standard_Real AScale = 0.02, const Standard_Boolean AsWireframe = Standard_True);
170 Standard_EXPORT void TriedronErase (const Graphic3d_CView& ACView);
171 Standard_EXPORT void TriedronEcho (const Graphic3d_CView& ACView, const Aspect_TypeOfTriedronEcho AType = Aspect_TOTE_NONE);
173 //! Displays Graduated trihedron
174 //! @param theView [in] the graphic view
175 //! @param theCubic [in] Graduated Trihedon parameters.
176 //! @sa OpenGl_GraduatedTrihedron
177 //! @sa Graphic3d_GraduatedTrihedron
178 Standard_EXPORT void GraduatedTrihedronDisplay (const Graphic3d_CView& theView, const Graphic3d_GraduatedTrihedron& theCubic);
180 //! Erases Graduated Trihedron from the view.
181 //! theView [in] graphic view
182 //! @sa OpenGl_GraduatedTrihedron
183 Standard_EXPORT void GraduatedTrihedronErase (const Graphic3d_CView& theView);
185 //! Sets minimum and maximum points of scene bounding box for Graduated Trihedron
186 //! stored in graphic view object.
187 //! @param theView [in] current graphic view
188 //! @param theMin [in] the minimum point of scene.
189 //! @param theMax [in] the maximum point of scene.
190 //! @sa OpenGl_GraduatedTrihedron
191 Standard_EXPORT void GraduatedTrihedronMinMaxValues (const Graphic3d_CView& theView,
192 const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax);
194 Standard_EXPORT void TextSize (const Standard_CString AText,const Standard_ShortReal AHeight,Standard_ShortReal& AWidth,Standard_ShortReal& AnAscent,Standard_ShortReal& ADescent) const;
195 Standard_EXPORT void SetBackFacingModel (const Graphic3d_CView& aView);
197 //! Print the contents of all layers of the view to the printer.
198 //! @param thePrinterDC pass the PrinterDeviceContext (HDC)
199 //! @param theToShowBackground when set to FALSE then print the view without background color (background is white) else set to TRUE for printing with current background color
200 //! @param theFileName if != NULL, then the view will be printed to a file
201 //! @param thePrintAlgorithm select print algorithm: stretch, tile
202 //! @param theScaleFactor scaling coefficient, used internally to scale the printings accordingly to the scale factor selected in the printer properties dialog
203 //! @return Standard_True if the data is passed to the printer, otherwise Standard_False if the print operation failed due to the printer errors,
204 //! or lack of system memory. This might be related to insufficient memory or some internal errors.
205 //! All this errors are indicated by the message boxes (on level of OpenGl_GraphicDriver).
206 //! Warning: This function can reuse FBO assigned to the view, please take it into account if you use it for your purposes.
207 Standard_EXPORT Standard_Boolean Print (const Graphic3d_CView& theCView,
208 const Aspect_Handle thePrinterDC,
209 const Standard_Boolean theToShowBackground,
210 const Standard_CString theFileName,
211 const Aspect_PrintAlgo thePrintAlgorithm = Aspect_PA_STRETCH,
212 const Standard_Real theScaleFactor = 1.0) const;
214 //! Reads depths of shown pixels of the given rectangle (glReadPixels with GL_DEPTH_COMPONENT)
215 Standard_EXPORT void ReadDepths (const Graphic3d_CView& view,const Standard_Integer x,const Standard_Integer y,const Standard_Integer width,const Standard_Integer height,const Standard_Address buffer) const;
217 //! Generate offscreen FBO (needs OpenGL2+ hardware).
218 //! If not supported on hardware returns NULL.
219 Standard_EXPORT Graphic3d_PtrFrameBuffer FBOCreate (const Graphic3d_CView& view, const Standard_Integer width, const Standard_Integer height);
221 //! Remove offscreen FBO
222 Standard_EXPORT void FBORelease (const Graphic3d_CView& view, Graphic3d_PtrFrameBuffer& fboPtr);
224 //! Dump active rendering buffer into specified memory buffer.
225 Standard_EXPORT Standard_Boolean BufferDump (const Graphic3d_CView& theCView,
226 Image_PixMap& theImage,
227 const Graphic3d_BufferType& theBufferType);
229 Standard_EXPORT void SetGLLightEnabled (const Graphic3d_CView& view,const Standard_Boolean isEnabled) const;
231 Standard_EXPORT Standard_Boolean IsGLLightEnabled (const Graphic3d_CView& view) const;
233 Standard_EXPORT Standard_Integer InquirePlaneLimit();
235 Standard_EXPORT Standard_ShortReal DefaultTextHeight() const;
237 Standard_EXPORT void FBOGetDimensions(const Graphic3d_CView& view,const Graphic3d_PtrFrameBuffer fboPtr,Standard_Integer& width,Standard_Integer& height,Standard_Integer& widthMax,Standard_Integer& heightMax);
239 Standard_EXPORT void FBOChangeViewport(const Graphic3d_CView& view,Graphic3d_PtrFrameBuffer& fboPtr,const Standard_Integer width,const Standard_Integer height);
241 Standard_EXPORT Standard_Boolean Export(const Standard_CString theFileName,const Graphic3d_ExportFormat theFormat,const Graphic3d_SortType theSortType,const Standard_Integer theWidth,const Standard_Integer theHeight,const Graphic3d_CView& theView,const Standard_Real thePrecision = 0.005,const Standard_Address theProgressBarFunc = NULL,const Standard_Address theProgressObject = NULL);
243 //! Add a new top-level z layer with ID theLayerId for the view. Z layers allow drawing structures in higher layers in foreground of structures in lower layers.
244 //! To add a structure to desired layer on display it is necessary to set the layer index for the structure.
245 Standard_EXPORT void AddZLayer (const Graphic3d_CView& theCView,
246 const Graphic3d_ZLayerId theLayerId);
248 //! Remove Z layer from the specified view.
249 //! All structures displayed at the moment in layer will be displayed in default layer (the bottom-level z layer).
250 //! To unset layer index from associated structures use method UnsetZLayer (...).
251 Standard_EXPORT void RemoveZLayer (const Graphic3d_CView& theCView,
252 const Graphic3d_ZLayerId theLayerId);
254 //! Unset Z layer ID for all structures.
255 //! The structure indexes will be set to default layer (the bottom-level z layer with ID = 0).
256 Standard_EXPORT void UnsetZLayer (const Graphic3d_ZLayerId theLayerId);
258 //! Change Z layer of a structure already presented in view.
259 //! It is recommended to update z layer of already displayed structures with this method before setting new z layer index to the structure.
260 //! This is usually done by viewer manager.
261 Standard_EXPORT void ChangeZLayer (const Graphic3d_CStructure& theCStructure,
262 const Graphic3d_CView& theCView,
263 const Graphic3d_ZLayerId theNewLayerId);
265 //! Sets the settings for a single Z layer of specified view.
266 Standard_EXPORT void SetZLayerSettings (const Graphic3d_CView& theCView,
267 const Graphic3d_ZLayerId theLayerId,
268 const Graphic3d_ZLayerSettings& theSettings);
270 //! Changes priority of a structure within its Z layer for the specified view.
271 Standard_EXPORT void ChangePriority (const Graphic3d_CStructure& theCStructure,
272 const Graphic3d_CView& theCView,
273 const Standard_Integer theNewPriority);
277 //! @return the visualization options
278 inline const OpenGl_Caps& Options() const
280 return *myCaps.operator->();
283 //! @return the visualization options
284 inline OpenGl_Caps& ChangeOptions()
286 return *myCaps.operator->();
289 //! Specify swap buffer behavior.
290 Standard_EXPORT void SetBuffersNoSwap (const Standard_Boolean theIsNoSwap);
292 //! VBO usage can be forbidden by this method even if it is supported by GL driver.
293 //! Notice that disabling of VBO will cause rendering performance degradation.
294 //! Warning! This method should be called only before any primitives are displayed in GL scene!
295 Standard_EXPORT void EnableVBO (const Standard_Boolean theToTurnOn);
297 //! Returns information about GPU memory usage.
298 //! Please read OpenGl_Context::MemoryInfo() for more description.
299 Standard_EXPORT Standard_Boolean MemoryInfo (Standard_Size& theFreeBytes,
300 TCollection_AsciiString& theInfo) const;
302 //! UserDraw function prototype
303 typedef OpenGl_Element* (*OpenGl_UserDrawCallback_t )(const CALL_DEF_USERDRAW* );
305 //! Method to setup UserDraw callback
306 Standard_EXPORT OpenGl_UserDrawCallback_t& UserDrawCallback();
310 //! Method to retrieve valid GL context.
311 //! Could return NULL-handle if no window created by this driver.
312 Standard_EXPORT const Handle(OpenGl_Context)& GetSharedContext() const;
314 //! Marks BVH tree for given priority list as dirty and
315 //! marks primitive set for rebuild.
316 Standard_EXPORT void InvalidateBVHData (Graphic3d_CView& theCView, const Standard_Integer theLayerId);
318 #if defined(HAVE_EGL) || defined(__ANDROID__)
319 Aspect_Display getRawGlDisplay() const { return myEglDisplay; }
320 Aspect_RenderingContext getRawGlContext() const { return myEglContext; }
321 void* getRawGlConfig() const { return myEglConfig; }
326 DEFINE_STANDARD_RTTI(OpenGl_GraphicDriver, Graphic3d_GraphicDriver)
330 Standard_Boolean myIsOwnContext; //!< indicates that shared context has been created within OpenGl_GraphicDriver
331 #if defined(HAVE_EGL) || defined(__ANDROID__)
332 Aspect_Display myEglDisplay; //!< EGL connection to the Display : EGLDisplay
333 Aspect_RenderingContext myEglContext; //!< EGL rendering context : EGLContext
334 void* myEglConfig; //!< EGL configuration : EGLConfig
337 Handle(OpenGl_Caps) myCaps;
338 NCollection_Map<Handle(OpenGl_View)> myMapOfView;
339 NCollection_Map<Handle(OpenGl_Workspace)> myMapOfWS;
340 NCollection_DataMap<Standard_Integer, OpenGl_Structure*> myMapOfStructure;
341 mutable Handle(OpenGl_PrinterContext) myPrintContext;
342 OpenGl_UserDrawCallback_t myUserDrawCallback;
346 //! State counter for OpenGl structures.
347 OpenGl_StateCounter* GetStateCounter() const { return &myStateCounter; }
349 //! Returns unique ID for primitive arrays.
350 const Standard_Size GetNextPrimitiveArrayUID() const { return myUIDGenerator.Increment(); }
354 mutable OpenGl_StateCounter myStateCounter; //!< State counter for OpenGl structures.
355 mutable OpenGl_StateCounter myUIDGenerator; //!< Unique ID counter for primitive arrays.
359 #endif //_OpenGl_GraphicDriver_HeaderFile