1 // Created on: 2011-09-20
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_View_Header
17 #define _OpenGl_View_Header
19 #include <Standard_Transient.hxx>
20 #include <Standard_Type.hxx>
22 #include <TColStd_Array2OfReal.hxx>
23 #include <NCollection_List.hxx>
24 #include <math_BullardGenerator.hxx>
26 #include <Quantity_NameOfColor.hxx>
27 #include <Aspect_FillMethod.hxx>
28 #include <Aspect_GradientFillMethod.hxx>
30 #include <Graphic3d_CView.hxx>
31 #include <Graphic3d_CullingTool.hxx>
32 #include <Graphic3d_GraduatedTrihedron.hxx>
33 #include <Graphic3d_SequenceOfHClipPlane.hxx>
34 #include <Graphic3d_ToneMappingMethod.hxx>
35 #include <Graphic3d_TypeOfShadingModel.hxx>
36 #include <Graphic3d_WorldViewProjState.hxx>
37 #include <Graphic3d_ZLayerSettings.hxx>
39 #include <OpenGl_Aspects.hxx>
40 #include <OpenGl_BackgroundArray.hxx>
41 #include <OpenGl_Context.hxx>
42 #include <OpenGl_FrameBuffer.hxx>
43 #include <OpenGl_FrameStatsPrs.hxx>
44 #include <OpenGl_GraduatedTrihedron.hxx>
45 #include <OpenGl_LayerList.hxx>
46 #include <OpenGl_LineAttributes.hxx>
47 #include <OpenGl_SceneGeometry.hxx>
48 #include <OpenGl_Structure.hxx>
49 #include <OpenGl_Window.hxx>
50 #include <OpenGl_Workspace.hxx>
51 #include <OpenGl_TileSampler.hxx>
58 class Graphic3d_StructureManager;
59 class OpenGl_GraphicDriver;
60 class OpenGl_StateCounter;
61 class OpenGl_TriangleSet;
62 class OpenGl_Workspace;
64 DEFINE_STANDARD_HANDLE(OpenGl_View,Graphic3d_CView)
66 //! Implementation of OpenGl view.
67 class OpenGl_View : public Graphic3d_CView
73 Standard_EXPORT OpenGl_View (const Handle(Graphic3d_StructureManager)& theMgr,
74 const Handle(OpenGl_GraphicDriver)& theDriver,
75 const Handle(OpenGl_Caps)& theCaps,
76 OpenGl_StateCounter* theCounter);
78 //! Default destructor.
79 Standard_EXPORT virtual ~OpenGl_View();
81 Standard_EXPORT void ReleaseGlResources (const Handle(OpenGl_Context)& theCtx);
83 //! Deletes and erases the view.
84 Standard_EXPORT virtual void Remove() Standard_OVERRIDE;
86 //! @param theDrawToFrontBuffer Advanced option to modify rendering mode:
87 //! 1. TRUE. Drawing immediate mode structures directly to the front buffer over the scene image.
88 //! Fast, so preferred for interactive work (used by default).
89 //! However these extra drawings will be missed in image dump since it is performed from back buffer.
90 //! Notice that since no pre-buffering used the V-Sync will be ignored and rendering could be seen
91 //! in run-time (in case of slow hardware) and/or tearing may appear.
92 //! So this is strongly recommended to draw only simple (fast) structures.
93 //! 2. FALSE. Drawing immediate mode structures to the back buffer.
94 //! The complete scene is redrawn first, so this mode is slower if scene contains complex data and/or V-Sync
95 //! is turned on. But it works in any case and is especially useful for view dump because the dump image is read
96 //! from the back buffer.
97 //! @return previous mode.
98 Standard_EXPORT Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer) Standard_OVERRIDE;
100 //! Creates and maps rendering window to the view.
101 //! @param theWindow [in] the window.
102 //! @param theContext [in] the rendering context. If NULL the context will be created internally.
103 Standard_EXPORT virtual void SetWindow (const Handle(Aspect_Window)& theWindow,
104 const Aspect_RenderingContext theContext) Standard_OVERRIDE;
106 //! Returns window associated with the view.
107 virtual Handle(Aspect_Window) Window() const Standard_OVERRIDE
108 { return myWindow->PlatformWindow(); }
110 //! Returns True if the window associated to the view is defined.
111 virtual Standard_Boolean IsDefined() const Standard_OVERRIDE
112 { return !myWindow.IsNull(); }
114 //! Handle changing size of the rendering window.
115 Standard_EXPORT virtual void Resized() Standard_OVERRIDE;
117 //! Redraw content of the view.
118 Standard_EXPORT virtual void Redraw() Standard_OVERRIDE;
120 //! Redraw immediate content of the view.
121 Standard_EXPORT virtual void RedrawImmediate() Standard_OVERRIDE;
123 //! Marks BVH tree for given priority list as dirty and marks primitive set for rebuild.
124 Standard_EXPORT virtual void Invalidate() Standard_OVERRIDE;
126 //! Return true if view content cache has been invalidated.
127 virtual Standard_Boolean IsInvalidated() Standard_OVERRIDE { return !myBackBufferRestored; }
129 //! Dump active rendering buffer into specified memory buffer.
130 //! In Ray-Tracing allow to get a raw HDR buffer using Graphic3d_BT_RGB_RayTraceHdrLeft buffer type,
131 //! only Left view will be dumped ignoring stereoscopic parameter.
132 Standard_EXPORT virtual Standard_Boolean BufferDump (Image_PixMap& theImage,
133 const Graphic3d_BufferType& theBufferType) Standard_OVERRIDE;
135 //! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
136 Standard_EXPORT virtual void InvalidateBVHData (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
138 //! Add a layer to the view.
139 //! @param theNewLayerId [in] id of new layer, should be > 0 (negative values are reserved for default layers).
140 //! @param theSettings [in] new layer settings
141 //! @param theLayerAfter [in] id of layer to append new layer before
142 Standard_EXPORT virtual void InsertLayerBefore (const Graphic3d_ZLayerId theLayerId,
143 const Graphic3d_ZLayerSettings& theSettings,
144 const Graphic3d_ZLayerId theLayerAfter) Standard_OVERRIDE;
146 //! Add a layer to the view.
147 //! @param theNewLayerId [in] id of new layer, should be > 0 (negative values are reserved for default layers).
148 //! @param theSettings [in] new layer settings
149 //! @param theLayerBefore [in] id of layer to append new layer after
150 Standard_EXPORT virtual void InsertLayerAfter (const Graphic3d_ZLayerId theNewLayerId,
151 const Graphic3d_ZLayerSettings& theSettings,
152 const Graphic3d_ZLayerId theLayerBefore) Standard_OVERRIDE;
154 //! Remove a z layer with the given ID.
155 Standard_EXPORT virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
157 //! Sets the settings for a single Z layer of specified view.
158 Standard_EXPORT virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
159 const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
161 //! Returns the maximum Z layer ID.
162 //! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
163 Standard_EXPORT virtual Standard_Integer ZLayerMax() const Standard_OVERRIDE;
165 //! Returns the list of layers.
166 Standard_EXPORT virtual const NCollection_List<Handle(Graphic3d_Layer)>& Layers() const Standard_OVERRIDE;
168 //! Returns layer with given ID or NULL if undefined.
169 Standard_EXPORT virtual Handle(Graphic3d_Layer) Layer (const Graphic3d_ZLayerId theLayerId) const Standard_OVERRIDE;
171 //! Returns the bounding box of all structures displayed in the view.
172 //! If theToIncludeAuxiliary is TRUE, then the boundary box also includes minimum and maximum limits
173 //! of graphical elements forming parts of infinite and other auxiliary structures.
174 //! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
175 //! @return computed bounding box
176 Standard_EXPORT virtual Bnd_Box MinMaxValues (const Standard_Boolean theToIncludeAuxiliary) const Standard_OVERRIDE;
178 //! Returns pointer to an assigned framebuffer object.
179 Standard_EXPORT virtual Handle(Standard_Transient) FBO() const Standard_OVERRIDE;
181 //! Sets framebuffer object for offscreen rendering.
182 Standard_EXPORT virtual void SetFBO (const Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
184 //! Generate offscreen FBO in the graphic library.
185 //! If not supported on hardware returns NULL.
186 Standard_EXPORT virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
187 const Standard_Integer theHeight) Standard_OVERRIDE;
189 //! Remove offscreen FBO from the graphic library
190 Standard_EXPORT virtual void FBORelease (Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
192 //! Read offscreen FBO configuration.
193 Standard_EXPORT virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
194 Standard_Integer& theWidth,
195 Standard_Integer& theHeight,
196 Standard_Integer& theWidthMax,
197 Standard_Integer& theHeightMax) Standard_OVERRIDE;
199 //! Change offscreen FBO viewport.
200 Standard_EXPORT virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
201 const Standard_Integer theWidth,
202 const Standard_Integer theHeight) Standard_OVERRIDE;
206 //! Returns gradient background fill colors.
207 Standard_EXPORT virtual Aspect_GradientBackground GradientBackground() const Standard_OVERRIDE;
209 //! Sets gradient background fill colors.
210 Standard_EXPORT virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) Standard_OVERRIDE;
212 //! Returns background image texture file path.
213 virtual TCollection_AsciiString BackgroundImage() Standard_OVERRIDE { return myBackgroundImagePath; }
215 //! Sets background image texture file path.
216 Standard_EXPORT virtual void SetBackgroundImage (const TCollection_AsciiString& theFilePath) Standard_OVERRIDE;
218 //! Returns background image fill style.
219 Standard_EXPORT virtual Aspect_FillMethod BackgroundImageStyle() const Standard_OVERRIDE;
221 //! Sets background image fill style.
222 Standard_EXPORT virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) Standard_OVERRIDE;
224 //! Returns cubemap being set last time on background.
225 Standard_EXPORT Handle(Graphic3d_CubeMap) BackgroundCubeMap() const Standard_OVERRIDE;
227 //! Sets environment cubemap as background.
228 Standard_EXPORT virtual void SetBackgroundCubeMap (const Handle(Graphic3d_CubeMap)& theCubeMap) Standard_OVERRIDE;
230 //! Returns environment texture set for the view.
231 virtual Handle(Graphic3d_TextureEnv) TextureEnv() const Standard_OVERRIDE { return myTextureEnvData; }
233 //! Sets environment texture for the view.
234 Standard_EXPORT virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) Standard_OVERRIDE;
236 //! Return backfacing model used for the view.
237 virtual Graphic3d_TypeOfBackfacingModel BackfacingModel() const Standard_OVERRIDE { return myBackfacing; }
239 //! Sets backfacing model for the view.
240 virtual void SetBackfacingModel (const Graphic3d_TypeOfBackfacingModel theModel) Standard_OVERRIDE { myBackfacing = theModel; }
242 //! Returns local camera origin currently set for rendering, might be modified during rendering.
243 const gp_XYZ& LocalOrigin() const { return myLocalOrigin; }
245 //! Setup local camera origin currently set for rendering.
246 Standard_EXPORT void SetLocalOrigin (const gp_XYZ& theOrigin);
248 //! Returns list of lights of the view.
249 virtual const Handle(Graphic3d_LightSet)& Lights() const Standard_OVERRIDE { return myLights; }
251 //! Sets list of lights for the view.
252 virtual void SetLights (const Handle(Graphic3d_LightSet)& theLights) Standard_OVERRIDE
254 myLights = theLights;
255 myCurrLightSourceState = myStateCounter->Increment();
258 //! Returns list of clip planes set for the view.
259 virtual const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const Standard_OVERRIDE { return myClipPlanes; }
261 //! Sets list of clip planes for the view.
262 virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes) Standard_OVERRIDE { myClipPlanes = thePlanes; }
264 //! Fill in the dictionary with diagnostic info.
265 //! Should be called within rendering thread.
267 //! This API should be used only for user output or for creating automated reports.
268 //! The format of returned information (e.g. key-value layout)
269 //! is NOT part of this API and can be changed at any time.
270 //! Thus application should not parse returned information to weed out specific parameters.
271 Standard_EXPORT virtual void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
272 Graphic3d_DiagnosticInfo theFlags) const Standard_OVERRIDE;
274 //! Returns string with statistic performance info.
275 Standard_EXPORT virtual TCollection_AsciiString StatisticInformation() const Standard_OVERRIDE;
277 //! Fills in the dictionary with statistic performance info.
278 Standard_EXPORT virtual void StatisticInformation (TColStd_IndexedDataMapOfStringString& theDict) const Standard_OVERRIDE;
282 //! Returns background color.
283 const Quantity_ColorRGBA& BackgroundColor() const { return myBgColor; }
285 //! Change graduated trihedron.
286 OpenGl_GraduatedTrihedron& ChangeGraduatedTrihedron() { return myGraduatedTrihedron; }
288 void SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
289 const Handle(Graphic3d_TextureEnv)& theTexture);
291 void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
293 void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
295 void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);
297 //! Returns list of OpenGL Z-layers.
298 const OpenGl_LayerList& LayerList() const { return myZLayers; }
300 //! Returns OpenGL window implementation.
301 const Handle(OpenGl_Window)& GlWindow() const { return myWindow; }
303 //! Returns OpenGL environment map.
304 const Handle(OpenGl_TextureSet)& GlTextureEnv() const { return myTextureEnv; }
306 //! Returns selector for BVH tree, providing a possibility to store information
307 //! about current view volume and to detect which objects are overlapping it.
308 const Graphic3d_CullingTool& BVHTreeSelector() const { return myBVHSelector; }
310 //! Returns true if there are immediate structures to display
311 bool HasImmediateStructures() const
313 return myZLayers.NbImmediateStructures() != 0;
316 public: //! @name obsolete Graduated Trihedron functionality
318 //! Displays Graduated Trihedron.
319 Standard_EXPORT virtual void GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData) Standard_OVERRIDE;
321 //! Erases Graduated Trihedron.
322 Standard_EXPORT virtual void GraduatedTrihedronErase() Standard_OVERRIDE;
324 //! Sets minimum and maximum points of scene bounding box for Graduated Trihedron stored in graphic view object.
325 //! @param theMin [in] the minimum point of scene.
326 //! @param theMax [in] the maximum point of scene.
327 Standard_EXPORT virtual void GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax) Standard_OVERRIDE;
329 protected: //! @name Internal methods for managing GL resources
331 //! Initializes OpenGl resource for environment texture.
332 void initTextureEnv (const Handle(OpenGl_Context)& theContext);
334 protected: //! @name low-level redrawing sub-routines
336 //! Redraws view for the given monographic camera projection, or left/right eye.
337 Standard_EXPORT virtual void redraw (const Graphic3d_Camera::Projection theProjection,
338 OpenGl_FrameBuffer* theReadDrawFbo,
339 OpenGl_FrameBuffer* theOitAccumFbo);
341 //! Redraws view for the given monographic camera projection, or left/right eye.
343 //! Method will blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
344 //! into presentation buffer (myMainSceneFbos -> offscreen FBO or
345 //! myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
346 //! and redraw immediate structures on top.
348 //! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
349 //! the first step (blitting) will be skipped.
351 //! @return false if immediate structures has been rendered directly into FrontBuffer
352 //! and Buffer Swap should not be called.
353 Standard_EXPORT virtual bool redrawImmediate (const Graphic3d_Camera::Projection theProjection,
354 OpenGl_FrameBuffer* theReadFbo,
355 OpenGl_FrameBuffer* theDrawFbo,
356 OpenGl_FrameBuffer* theOitAccumFbo,
357 const Standard_Boolean theIsPartialUpdate = Standard_False);
359 //! Blit image from/to specified buffers.
360 Standard_EXPORT bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
361 OpenGl_FrameBuffer* theDrawFbo,
362 const Standard_Boolean theToFlip = Standard_False);
364 //! Setup default FBO.
365 Standard_EXPORT void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
367 protected: //! @name Rendering of GL graphics (with prepared drawing buffer).
369 //! Renders the graphical contents of the view into the preprepared window or framebuffer.
370 //! @param theProjection [in] the projection that should be used for rendering.
371 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
372 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
373 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
374 Standard_EXPORT virtual void render (Graphic3d_Camera::Projection theProjection,
375 OpenGl_FrameBuffer* theReadDrawFbo,
376 OpenGl_FrameBuffer* theOitAccumFbo,
377 const Standard_Boolean theToDrawImmediate);
379 //! Renders the graphical scene.
380 //! @param theProjection [in] the projection that is used for rendering.
381 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
382 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
383 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
384 Standard_EXPORT virtual void renderScene (Graphic3d_Camera::Projection theProjection,
385 OpenGl_FrameBuffer* theReadDrawFbo,
386 OpenGl_FrameBuffer* theOitAccumFbo,
387 const Standard_Boolean theToDrawImmediate);
389 //! Draw background (gradient / image)
390 Standard_EXPORT virtual void drawBackground (const Handle(OpenGl_Workspace)& theWorkspace);
392 //! Render set of structures presented in the view.
393 //! @param theProjection [in] the projection that is used for rendering.
394 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
395 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
396 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
397 Standard_EXPORT virtual void renderStructs (Graphic3d_Camera::Projection theProjection,
398 OpenGl_FrameBuffer* theReadDrawFbo,
399 OpenGl_FrameBuffer* theOitAccumFbo,
400 const Standard_Boolean theToDrawImmediate);
402 //! Renders trihedron.
403 void renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace);
405 //! Renders frame statistics.
406 void renderFrameStats();
410 //! Adds the structure to display lists of the view.
411 Standard_EXPORT virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
412 const Standard_Integer thePriority) Standard_OVERRIDE;
414 //! Erases the structure from display lists of the view.
415 Standard_EXPORT virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) Standard_OVERRIDE;
417 //! Change Z layer of a structure already presented in view.
418 Standard_EXPORT virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
419 const Graphic3d_ZLayerId theNewLayerId) Standard_OVERRIDE;
421 //! Changes the priority of a structure within its Z layer in the specified view.
422 Standard_EXPORT virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
423 const Standard_Integer theNewPriority) Standard_OVERRIDE;
427 //! Copy content of Back buffer to the Front buffer.
428 bool copyBackToFront();
430 //! Initialize blit quad.
431 OpenGl_VertexBuffer* initBlitQuad (const Standard_Boolean theToFlip);
433 //! Blend together views pair into stereo image.
434 void drawStereoPair (OpenGl_FrameBuffer* theDrawFbo);
436 //! Check and update OIT compatibility with current OpenGL context's state.
437 bool checkOitCompatibility (const Handle(OpenGl_Context)& theGlContext,
438 const Standard_Boolean theMSAA);
440 //! Chooses compatible internal color format for OIT frame buffer.
441 bool chooseOitColorConfiguration (const Handle(OpenGl_Context)& theGlContext,
442 const Standard_Integer theConfigIndex,
443 OpenGl_ColorFormats& theFormats);
447 OpenGl_GraphicDriver* myDriver;
448 Handle(OpenGl_Window) myWindow;
449 Handle(OpenGl_Workspace) myWorkspace;
450 Handle(OpenGl_Caps) myCaps;
451 Standard_Boolean myWasRedrawnGL;
453 Graphic3d_TypeOfBackfacingModel myBackfacing;
454 Handle(Graphic3d_SequenceOfHClipPlane) myClipPlanes;
455 gp_XYZ myLocalOrigin;
456 Handle(OpenGl_FrameBuffer) myFBO;
457 Standard_Boolean myToShowGradTrihedron;
458 TCollection_AsciiString myBackgroundImagePath;
459 Handle(Graphic3d_TextureEnv) myTextureEnvData;
460 Graphic3d_GraduatedTrihedron myGTrihedronData;
462 Handle(Graphic3d_LightSet) myNoShadingLight;
463 Handle(Graphic3d_LightSet) myLights;
464 OpenGl_LayerList myZLayers; //!< main list of displayed structure, sorted by layers
466 Graphic3d_WorldViewProjState myWorldViewProjState; //!< camera modification state
467 OpenGl_StateCounter* myStateCounter;
468 Standard_Size myCurrLightSourceState;
469 Standard_Size myLightsRevision;
471 typedef std::pair<Standard_Size, Standard_Size> StateInfo;
473 StateInfo myLastOrientationState;
474 StateInfo myLastViewMappingState;
475 StateInfo myLastLightSourceState;
477 //! Is needed for selection of overlapping objects and storage of the current view volume
478 Graphic3d_CullingTool myBVHSelector;
480 OpenGl_GraduatedTrihedron myGraduatedTrihedron;
481 OpenGl_FrameStatsPrs myFrameStatsPrs;
483 Handle(OpenGl_TextureSet) myTextureEnv;
485 //! Framebuffers for OpenGL output.
486 Handle(OpenGl_FrameBuffer) myOpenGlFBO;
487 Handle(OpenGl_FrameBuffer) myOpenGlFBO2;
489 protected: //! @name Rendering properties
491 //! Two framebuffers (left and right views) store cached main presentation
492 //! of the view (without presentation of immediate layers).
493 GLint myFboColorFormat; //!< sized format for color attachments
494 GLint myFboDepthFormat; //!< sized format for depth-stencil attachments
495 OpenGl_ColorFormats myFboOitColorConfig; //!< selected color format configuration for OIT color attachments
496 Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
497 Handle(OpenGl_FrameBuffer) myMainSceneFbosOit[2]; //!< Additional buffers for transparent draw of main layer.
498 Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2]; //!< Additional buffers for immediate layer in stereo mode.
499 Handle(OpenGl_FrameBuffer) myImmediateSceneFbosOit[2]; //!< Additional buffers for transparency draw of immediate layer.
500 OpenGl_VertexBuffer myFullScreenQuad; //!< Vertices for full-screen quad rendering.
501 OpenGl_VertexBuffer myFullScreenQuadFlip;
502 Standard_Boolean myToFlipOutput; //!< Flag to draw result image upside-down
503 unsigned int myFrameCounter; //!< redraw counter, for debugging
504 Standard_Boolean myHasFboBlit; //!< disable FBOs on failure
505 Standard_Boolean myToDisableOIT; //!< disable OIT on failure
506 Standard_Boolean myToDisableOITMSAA; //!< disable OIT with MSAA on failure
507 Standard_Boolean myToDisableMSAA; //!< disable MSAA after failure
508 Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer)
509 Standard_Boolean myBackBufferRestored;
510 Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data
512 protected: //! @name Background parameters
514 OpenGl_Aspects* myTextureParams; //!< Stores texture and its parameters for textured background
515 OpenGl_Aspects* myCubeMapParams; //!< Stores cubemap and its parameters for cubemap background
516 Handle(Graphic3d_CubeMap) myBackgroundCubeMap; //!< Cubemap has been setted as background
517 Graphic3d_TypeOfBackground myBackgroundType; //!< Current typy of background
518 OpenGl_BackgroundArray* myBackgrounds[Graphic3d_TypeOfBackground_NB]; //!< Array of primitive arrays of different background types
520 protected: //! @name data types related to ray-tracing
522 //! Result of OpenGL shaders initialization.
523 enum RaytraceInitStatus
530 //! Describes update mode (state).
531 enum RaytraceUpdateMode
533 OpenGl_GUM_CHECK, //!< check geometry state
534 OpenGl_GUM_PREPARE, //!< collect unchanged objects
535 OpenGl_GUM_REBUILD //!< rebuild changed and new objects
538 //! Defines frequently used shader variables.
539 enum ShaderVariableIndex
552 OpenGl_RT_uViewPrMat,
553 OpenGl_RT_uUnviewMat,
558 OpenGl_RT_uLightAmbnt,
559 OpenGl_RT_uLightCount,
562 OpenGl_RT_uBackColorTop,
563 OpenGl_RT_uBackColorBot,
565 // ray-tracing params
566 OpenGl_RT_uShadowsEnabled,
567 OpenGl_RT_uReflectEnabled,
568 OpenGl_RT_uSphereMapEnabled,
569 OpenGl_RT_uSphereMapForBack,
570 OpenGl_RT_uTexSamplersArray,
571 OpenGl_RT_uBlockedRngEnabled,
573 // size of render window
577 // sampled frame params
578 OpenGl_RT_uAccumSamples,
579 OpenGl_RT_uFrameRndSeed,
581 // adaptive FSAA params
586 // images used by ISS mode
587 OpenGl_RT_uRenderImage,
588 OpenGl_RT_uTilesImage,
589 OpenGl_RT_uOffsetImage,
591 OpenGl_RT_uVarianceScaleFactor,
593 // maximum radiance value
594 OpenGl_RT_uMaxRadiance,
596 OpenGl_RT_NbVariables // special field
599 //! Defines OpenGL image samplers.
600 enum ShaderImageNames
602 OpenGl_RT_OutputImage = 0,
603 OpenGl_RT_VisualErrorImage = 1,
604 OpenGl_RT_TileOffsetsImage = 2,
605 OpenGl_RT_TileSamplesImage = 3
608 //! Tool class for management of shader sources.
613 //! Default shader prefix - empty string.
614 static const TCollection_AsciiString EMPTY_PREFIX;
616 //! Creates new uninitialized shader source.
624 //! Returns error description in case of load fail.
625 const TCollection_AsciiString& ErrorDescription() const
630 //! Returns prefix to insert before the source.
631 const TCollection_AsciiString& Prefix() const
636 //! Sets prefix to insert before the source.
637 void SetPrefix (const TCollection_AsciiString& thePrefix)
639 myPrefix = thePrefix;
642 //! Returns shader source combined with prefix.
643 TCollection_AsciiString Source() const;
645 //! Loads shader source from specified files.
646 Standard_Boolean LoadFromFiles (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
648 //! Loads shader source from specified strings.
649 Standard_Boolean LoadFromStrings (const TCollection_AsciiString* theStrings, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
653 TCollection_AsciiString mySource; //!< Source string of the shader object
654 TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
655 TCollection_AsciiString myError; //!< error state
659 //! Default ray-tracing depth.
660 static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
662 //! Default size of traversal stack.
663 static const Standard_Integer THE_DEFAULT_STACK_SIZE = 10;
665 //! Compile-time ray-tracing parameters.
666 struct RaytracingParams
668 //! Actual size of traversal stack in shader program.
669 Standard_Integer StackSize;
671 //! Actual ray-tracing depth (number of ray bounces).
672 Standard_Integer NbBounces;
674 //! Enables/disables light propagation through transparent media.
675 Standard_Boolean TransparentShadows;
677 //! Enables/disables global illumination (GI) effects.
678 Standard_Boolean GlobalIllumination;
680 //! Enables/disables the use of OpenGL bindless textures.
681 Standard_Boolean UseBindlessTextures;
683 //! Enables/disables two-sided BSDF models instead of one-sided.
684 Standard_Boolean TwoSidedBsdfModels;
686 //! Enables/disables adaptive screen sampling for path tracing.
687 Standard_Boolean AdaptiveScreenSampling;
689 //! Enables/disables 1-pass atomic mode for AdaptiveScreenSampling.
690 Standard_Boolean AdaptiveScreenSamplingAtomic;
692 //! Enables/disables environment map for background.
693 Standard_Boolean UseEnvMapForBackground;
695 //! Maximum radiance value used for clamping radiance estimation.
696 Standard_ShortReal RadianceClampingValue;
698 //! Enables/disables depth-of-field effect (path tracing, perspective camera).
699 Standard_Boolean DepthOfField;
701 //! Tone mapping method for path tracing.
702 Graphic3d_ToneMappingMethod ToneMappingMethod;
704 //! Creates default compile-time ray-tracing parameters.
706 : StackSize (THE_DEFAULT_STACK_SIZE),
707 NbBounces (THE_DEFAULT_NB_BOUNCES),
708 TransparentShadows (Standard_False),
709 GlobalIllumination (Standard_False),
710 UseBindlessTextures (Standard_False),
711 TwoSidedBsdfModels (Standard_False),
712 AdaptiveScreenSampling (Standard_False),
713 AdaptiveScreenSamplingAtomic (Standard_False),
714 UseEnvMapForBackground (Standard_False),
715 RadianceClampingValue (30.0),
716 DepthOfField (Standard_False),
717 ToneMappingMethod (Graphic3d_ToneMappingMethod_Disabled) { }
720 //! Describes state of OpenGL structure.
723 Standard_Size StructureState;
724 Standard_Size InstancedState;
726 //! Creates new structure state.
727 StructState (const Standard_Size theStructureState = 0,
728 const Standard_Size theInstancedState = 0)
729 : StructureState (theStructureState),
730 InstancedState (theInstancedState)
735 //! Creates new structure state.
736 StructState (const OpenGl_Structure* theStructure)
738 StructureState = theStructure->ModificationState();
740 InstancedState = theStructure->InstancedStructure() != NULL ?
741 theStructure->InstancedStructure()->ModificationState() : 0;
745 protected: //! @name methods related to ray-tracing
747 //! Updates 3D scene geometry for ray-tracing.
748 Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
749 const Standard_Integer theViewId,
750 const Handle(OpenGl_Context)& theGlContext);
752 //! Updates 3D scene light sources for ray-tracing.
753 Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
755 //! Checks to see if the OpenGL structure is modified.
756 Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
758 //! Adds OpenGL structure to ray-traced scene geometry.
759 Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
760 const Handle(OpenGl_Context)& theGlContext);
762 //! Adds OpenGL groups to ray-traced scene geometry.
763 Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
764 const OpenGl_RaytraceMaterial& theStructMat,
765 const Handle(Geom_Transformation)& theTrsf,
766 const Handle(OpenGl_Context)& theGlContext);
768 //! Creates ray-tracing material properties.
769 OpenGl_RaytraceMaterial convertMaterial (const OpenGl_Aspects* theAspect,
770 const Handle(OpenGl_Context)& theGlContext);
772 //! Adds OpenGL primitive array to ray-traced scene geometry.
773 Handle(OpenGl_TriangleSet) addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
774 const Standard_Integer theMatID,
775 const OpenGl_Mat4* theTrans);
777 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
778 Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
779 const Standard_Integer theMatID,
780 const Standard_Integer theCount,
781 const Standard_Integer theOffset,
782 const OpenGl_PrimitiveArray& theArray);
784 //! Adds OpenGL triangle array to ray-traced scene geometry.
785 Standard_Boolean addRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
786 const Standard_Integer theMatID,
787 const Standard_Integer theCount,
788 const Standard_Integer theOffset,
789 const Handle(Graphic3d_IndexBuffer)& theIndices);
791 //! Adds OpenGL triangle fan array to ray-traced scene geometry.
792 Standard_Boolean addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
793 const Standard_Integer theMatID,
794 const Standard_Integer theCount,
795 const Standard_Integer theOffset,
796 const Handle(Graphic3d_IndexBuffer)& theIndices);
798 //! Adds OpenGL triangle strip array to ray-traced scene geometry.
799 Standard_Boolean addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
800 const Standard_Integer theMatID,
801 const Standard_Integer theCount,
802 const Standard_Integer theOffset,
803 const Handle(Graphic3d_IndexBuffer)& theIndices);
805 //! Adds OpenGL quadrangle array to ray-traced scene geometry.
806 Standard_Boolean addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
807 const Standard_Integer theMatID,
808 const Standard_Integer theCount,
809 const Standard_Integer theOffset,
810 const Handle(Graphic3d_IndexBuffer)& theIndices);
812 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
813 Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
814 const Standard_Integer theMatID,
815 const Standard_Integer theCount,
816 const Standard_Integer theOffset,
817 const Handle(Graphic3d_IndexBuffer)& theIndices);
819 //! Adds OpenGL polygon array to ray-traced scene geometry.
820 Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
821 const Standard_Integer theMatID,
822 const Standard_Integer theCount,
823 const Standard_Integer theOffset,
824 const Handle(Graphic3d_IndexBuffer)& theIndices);
826 //! Uploads ray-trace data to the GPU.
827 Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
829 //! Generates shader prefix based on current ray-tracing options.
830 TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
832 //! Performs safe exit when shaders initialization fails.
833 Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
834 const Handle(OpenGl_Context)& theGlContext);
836 //! Loads and compiles shader object from specified source.
837 Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
838 const ShaderSource& theSource,
839 const Handle(OpenGl_Context)& theGlContext);
841 //! Creates shader program from the given vertex and fragment shaders.
842 Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
843 const Handle(OpenGl_ShaderObject)& theVertShader,
844 const Handle(OpenGl_ShaderObject)& theFragShader,
845 const TCollection_AsciiString& theName);
847 //! Initializes OpenGL/GLSL shader programs.
848 Standard_Boolean initRaytraceResources (const Standard_Integer theSizeX,
849 const Standard_Integer theSizeY,
850 const Handle(OpenGl_Context)& theGlContext);
852 //! Releases OpenGL/GLSL shader programs.
853 void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext,
854 const Standard_Boolean theToRebuild = Standard_False);
856 //! Updates auxiliary OpenGL frame buffers.
857 Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
858 const Standard_Integer theSizeY,
859 const Handle(OpenGl_Context)& theGlContext);
861 //! Generates viewing rays for corners of screen quad.
862 //! (ray tracing; path tracing for orthographic camera)
863 void updateCamera (const OpenGl_Mat4& theOrientation,
864 const OpenGl_Mat4& theViewMapping,
865 OpenGl_Vec3* theOrigins,
866 OpenGl_Vec3* theDirects,
867 OpenGl_Mat4& theView,
868 OpenGl_Mat4& theUnView);
870 //! Generate viewing rays (path tracing, perspective camera).
871 void updatePerspCameraPT(const OpenGl_Mat4& theOrientation,
872 const OpenGl_Mat4& theViewMapping,
873 Graphic3d_Camera::Projection theProjection,
874 OpenGl_Mat4& theViewPr,
875 OpenGl_Mat4& theUnview,
876 const int theWinSizeX,
877 const int theWinSizeY);
879 //! Binds ray-trace textures to corresponding texture units.
880 void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext,
883 //! Unbinds ray-trace textures from corresponding texture unit.
884 void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
886 //! Sets uniform state for the given ray-tracing shader program.
887 Standard_Boolean setUniformState (const Standard_Integer theProgramId,
888 const Standard_Integer theSizeX,
889 const Standard_Integer theSizeY,
890 Graphic3d_Camera::Projection theProjection,
891 const Handle(OpenGl_Context)& theGlContext);
893 //! Runs ray-tracing shader programs.
894 Standard_Boolean runRaytraceShaders (const Standard_Integer theSizeX,
895 const Standard_Integer theSizeY,
896 Graphic3d_Camera::Projection theProjection,
897 OpenGl_FrameBuffer* theReadDrawFbo,
898 const Handle(OpenGl_Context)& theGlContext);
900 //! Runs classical (Whitted-style) ray-tracing kernel.
901 Standard_Boolean runRaytrace (const Standard_Integer theSizeX,
902 const Standard_Integer theSizeY,
903 Graphic3d_Camera::Projection theProjection,
904 OpenGl_FrameBuffer* theReadDrawFbo,
905 const Handle(OpenGl_Context)& theGlContext);
907 //! Runs path tracing (global illumination) kernel.
908 Standard_Boolean runPathtrace (const Standard_Integer theSizeX,
909 const Standard_Integer theSizeY,
910 Graphic3d_Camera::Projection theProjection,
911 const Handle(OpenGl_Context)& theGlContext);
913 //! Runs path tracing (global illumination) kernel.
914 Standard_Boolean runPathtraceOut (Graphic3d_Camera::Projection theProjection,
915 OpenGl_FrameBuffer* theReadDrawFbo,
916 const Handle(OpenGl_Context)& theGlContext);
918 //! Redraws the window using OpenGL/GLSL ray-tracing or path tracing.
919 Standard_Boolean raytrace (const Standard_Integer theSizeX,
920 const Standard_Integer theSizeY,
921 Graphic3d_Camera::Projection theProjection,
922 OpenGl_FrameBuffer* theReadDrawFbo,
923 const Handle(OpenGl_Context)& theGlContext);
925 protected: //! @name fields related to ray-tracing
927 //! Result of RT/PT shaders initialization.
928 RaytraceInitStatus myRaytraceInitStatus;
930 //! Is ray-tracing geometry data valid?
931 Standard_Boolean myIsRaytraceDataValid;
933 //! True if warning about missing extension GL_ARB_bindless_texture has been displayed.
934 Standard_Boolean myIsRaytraceWarnTextures;
936 //! 3D scene geometry data for ray-tracing.
937 OpenGl_RaytraceGeometry myRaytraceGeometry;
939 //! Builder for triangle set.
940 opencascade::handle<BVH_Builder<Standard_ShortReal, 3> > myRaytraceBVHBuilder;
942 //! Compile-time ray-tracing parameters.
943 RaytracingParams myRaytraceParameters;
945 //! Radius of bounding sphere of the scene.
946 Standard_ShortReal myRaytraceSceneRadius;
947 //! Scene epsilon to prevent self-intersections.
948 Standard_ShortReal myRaytraceSceneEpsilon;
950 //! OpenGL/GLSL source of ray-tracing fragment shader.
951 ShaderSource myRaytraceShaderSource;
952 //! OpenGL/GLSL source of adaptive-AA fragment shader.
953 ShaderSource myPostFSAAShaderSource;
954 //! OpenGL/GLSL source of RT/PT display fragment shader.
955 ShaderSource myOutImageShaderSource;
957 //! OpenGL/GLSL ray-tracing fragment shader.
958 Handle(OpenGl_ShaderObject) myRaytraceShader;
959 //! OpenGL/GLSL adaptive-AA fragment shader.
960 Handle(OpenGl_ShaderObject) myPostFSAAShader;
961 //! OpenGL/GLSL ray-tracing display fragment shader.
962 Handle(OpenGl_ShaderObject) myOutImageShader;
964 //! OpenGL/GLSL ray-tracing shader program.
965 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
966 //! OpenGL/GLSL adaptive-AA shader program.
967 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
968 //! OpenGL/GLSL program for displaying texture.
969 Handle(OpenGl_ShaderProgram) myOutImageProgram;
971 //! Texture buffer of data records of bottom-level BVH nodes.
972 Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
973 //! Texture buffer of minimum points of bottom-level BVH nodes.
974 Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
975 //! Texture buffer of maximum points of bottom-level BVH nodes.
976 Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;
977 //! Texture buffer of transformations of high-level BVH nodes.
978 Handle(OpenGl_TextureBufferArb) mySceneTransformTexture;
980 //! Texture buffer of vertex coords.
981 Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture;
982 //! Texture buffer of vertex normals.
983 Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture;
984 //! Texture buffer of vertex UV coords.
985 Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture;
986 //! Texture buffer of triangle indices.
987 Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture;
989 //! Texture buffer of material properties.
990 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
991 //! Texture buffer of light source properties.
992 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
994 //! 1st framebuffer (FBO) to perform adaptive FSAA.
995 //! Used in compatibility mode (no adaptive sampling).
996 Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
997 //! 2nd framebuffer (FBO) to perform adaptive FSAA.
998 //! Used in compatibility mode (no adaptive sampling).
999 Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
1001 //! Output textures (2 textures are used in stereo mode).
1002 //! Used if adaptive screen sampling is activated.
1003 Handle(OpenGl_Texture) myRaytraceOutputTexture[2];
1005 //! Texture containing per-tile visual error estimation (2 textures are used in stereo mode).
1006 //! Used if adaptive screen sampling is activated.
1007 Handle(OpenGl_Texture) myRaytraceVisualErrorTexture[2];
1008 //! Texture containing offsets of sampled screen tiles (2 textures are used in stereo mode).
1009 //! Used if adaptive screen sampling is activated.
1010 Handle(OpenGl_Texture) myRaytraceTileOffsetsTexture[2];
1011 //! Texture containing amount of extra per-tile samples (2 textures are used in stereo mode).
1012 //! Used if adaptive screen sampling is activated.
1013 Handle(OpenGl_Texture) myRaytraceTileSamplesTexture[2];
1015 //! Vertex buffer (VBO) for drawing dummy quad.
1016 OpenGl_VertexBuffer myRaytraceScreenQuad;
1018 //! Cached locations of frequently used uniform variables.
1019 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
1021 //! State of OpenGL structures reflected to ray-tracing.
1022 std::map<const OpenGl_Structure*, StructState> myStructureStates;
1024 //! PrimitiveArray to TriangleSet map for scene partial update.
1025 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
1027 //! Set of IDs of non-raytracable elements (to detect updates).
1028 std::set<Standard_Integer> myNonRaytraceStructureIDs;
1030 //! Marks if environment map should be updated.
1031 Standard_Boolean myToUpdateEnvironmentMap;
1033 //! State of OpenGL layer list.
1034 Standard_Size myRaytraceLayerListState;
1036 //! Number of accumulated frames (for progressive rendering).
1037 Standard_Integer myAccumFrames;
1039 //! Stored ray origins used for detection of camera movements.
1040 OpenGl_Vec3 myPreviousOrigins[3];
1042 //! Bullard RNG to produce random sequence.
1043 math_BullardGenerator myRNG;
1045 //! Tool object for sampling screen tiles in PT mode.
1046 OpenGl_TileSampler myTileSampler;
1048 //! Camera position used for projective mode
1049 OpenGl_Vec3 myEyeOrig;
1051 //! Camera view direction used for projective mode
1052 OpenGl_Vec3 myEyeView;
1054 //! Camera's screen vertical direction used for projective mode
1055 OpenGl_Vec3 myEyeVert;
1057 //! Camera's screen horizontal direction used for projective mode
1058 OpenGl_Vec3 myEyeSide;
1060 //! Camera's screen size used for projective mode
1061 OpenGl_Vec2 myEyeSize;
1063 //! Aperture radius of camera on previous frame used for depth-of-field (path tracing)
1064 float myPrevCameraApertureRadius;
1066 //! Focal distance of camera on previous frame used for depth-of-field (path tracing)
1067 float myPrevCameraFocalPlaneDist;
1071 DEFINE_STANDARD_ALLOC
1072 DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
1074 friend class OpenGl_GraphicDriver;
1075 friend class OpenGl_Workspace;
1076 friend class OpenGl_LayerList;
1077 friend class OpenGl_FrameStats;
1080 #endif // _OpenGl_View_Header