0027350: Support for Universal Windows Platform
[occt.git] / src / OpenGl / OpenGl_View.hxx
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b311480e 1// Created on: 2011-09-20
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
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16#ifndef _OpenGl_View_Header
17#define _OpenGl_View_Header
18
19#include <MMgt_TShared.hxx>
ec357c5c 20#include <Standard_Type.hxx>
2166f0fa
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21
22#include <TColStd_Array2OfReal.hxx>
23#include <NCollection_List.hxx>
189f85a3 24#include <math_BullardGenerator.hxx>
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25
26#include <Quantity_NameOfColor.hxx>
27#include <Aspect_FillMethod.hxx>
28#include <Aspect_GradientFillMethod.hxx>
29#include <Aspect_TypeOfTriedronPosition.hxx>
2166f0fa 30
2166f0fa 31#include <Graphic3d_CView.hxx>
a79f67f8 32#include <Graphic3d_GraduatedTrihedron.hxx>
51b10cd4 33#include <Graphic3d_SequenceOfHClipPlane.hxx>
c357e426 34#include <Graphic3d_TypeOfShadingModel.hxx>
825aa485 35#include <Graphic3d_WorldViewProjState.hxx>
c5751993 36#include <Graphic3d_ZLayerSettings.hxx>
2166f0fa 37
0b0320e7 38#include <OpenGl_AspectFace.hxx>
39#include <OpenGl_BackgroundArray.hxx>
b7cd4ba7 40#include <OpenGl_BVHTreeSelector.hxx>
c357e426 41#include <OpenGl_Context.hxx>
42#include <OpenGl_FrameBuffer.hxx>
43#include <OpenGl_GraduatedTrihedron.hxx>
59f45b7c 44#include <OpenGl_LayerList.hxx>
2166f0fa 45#include <OpenGl_Light.hxx>
73192b37 46#include <OpenGl_LineAttributes.hxx>
c357e426 47#include <OpenGl_SceneGeometry.hxx>
48#include <OpenGl_Structure.hxx>
536d98e2 49#include <OpenGl_Trihedron.hxx>
c357e426 50#include <OpenGl_Window.hxx>
51#include <OpenGl_Workspace.hxx>
2166f0fa 52
c357e426 53#include <map>
54#include <set>
2166f0fa 55
b5ac8292 56struct OpenGl_Matrix;
2166f0fa 57
c357e426 58class Graphic3d_StructureManager;
59class OpenGl_GraphicDriver;
60class OpenGl_StateCounter;
61class OpenGl_RaytraceMaterial;
62class OpenGl_TriangleSet;
63class OpenGl_Workspace;
c04c30b3 64class OpenGl_View;
c357e426 65DEFINE_STANDARD_HANDLE(OpenGl_View,Graphic3d_CView)
c04c30b3 66
c357e426 67//! Implementation of OpenGl view.
68class OpenGl_View : public Graphic3d_CView
2166f0fa 69{
c357e426 70
71public:
72
73 //! Constructor.
74 Standard_EXPORT OpenGl_View (const Handle(Graphic3d_StructureManager)& theMgr,
75 const Handle(OpenGl_GraphicDriver)& theDriver,
76 const Handle(OpenGl_Caps)& theCaps,
77 Standard_Boolean& theDeviceLostFlag,
78 OpenGl_StateCounter* theCounter);
79
80 //! Default destructor.
81 Standard_EXPORT virtual ~OpenGl_View();
2166f0fa 82
62e1beed 83 Standard_EXPORT void ReleaseGlResources (const Handle(OpenGl_Context)& theCtx);
bf75be98 84
c357e426 85 //! Deletes and erases the view.
86 Standard_EXPORT virtual void Remove() Standard_OVERRIDE;
87
88 //! @param theDrawToFrontBuffer Advanced option to modify rendering mode:
89 //! 1. TRUE. Drawing immediate mode structures directly to the front buffer over the scene image.
90 //! Fast, so preferred for interactive work (used by default).
91 //! However these extra drawings will be missed in image dump since it is performed from back buffer.
92 //! Notice that since no pre-buffering used the V-Sync will be ignored and rendering could be seen
93 //! in run-time (in case of slow hardware) and/or tearing may appear.
94 //! So this is strongly recommended to draw only simple (fast) structures.
95 //! 2. FALSE. Drawing immediate mode structures to the back buffer.
96 //! The complete scene is redrawn first, so this mode is slower if scene contains complex data and/or V-Sync
97 //! is turned on. But it works in any case and is especially useful for view dump because the dump image is read
98 //! from the back buffer.
99 //! @return previous mode.
100 Standard_EXPORT Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer) Standard_OVERRIDE;
101
102 //! Creates and maps rendering window to the view.
c357e426 103 //! @param theWindow [in] the window.
104 //! @param theContext [in] the rendering context. If NULL the context will be created internally.
a521d90d 105 Standard_EXPORT virtual void SetWindow (const Handle(Aspect_Window)& theWindow,
106 const Aspect_RenderingContext theContext) Standard_OVERRIDE;
c357e426 107
108 //! Returns window associated with the view.
79104795 109 virtual Handle(Aspect_Window) Window() const Standard_OVERRIDE
110 { return myWindow->PlatformWindow(); }
c357e426 111
112 //! Returns True if the window associated to the view is defined.
79104795 113 virtual Standard_Boolean IsDefined() const Standard_OVERRIDE
114 { return !myWindow.IsNull(); }
c357e426 115
116 //! Handle changing size of the rendering window.
117 Standard_EXPORT virtual void Resized() Standard_OVERRIDE;
118
119 //! Redraw content of the view.
120 Standard_EXPORT virtual void Redraw() Standard_OVERRIDE;
121
122 //! Redraw immediate content of the view.
123 Standard_EXPORT virtual void RedrawImmediate() Standard_OVERRIDE;
124
125 //! Marks BVH tree for given priority list as dirty and marks primitive set for rebuild.
126 Standard_EXPORT virtual void Invalidate() Standard_OVERRIDE;
127
128 //! Return true if view content cache has been invalidated.
d2eddacc 129 virtual Standard_Boolean IsInvalidated() Standard_OVERRIDE { return !myBackBufferRestored; }
c357e426 130
131 //! Displays z-buffer trihedron.
132 Standard_EXPORT virtual void TriedronDisplay (const Aspect_TypeOfTriedronPosition thePosition = Aspect_TOTP_CENTER,
133 const Quantity_NameOfColor theColor = Quantity_NOC_WHITE,
134 const Standard_Real theScale = 0.02,
135 const Standard_Boolean theAsWireframe = Standard_True) Standard_OVERRIDE;
136
137 //! Erases z-buffer trihedron.
138 Standard_EXPORT virtual void TriedronErase() Standard_OVERRIDE;
139
140 //! Setup parameters of z-buffer trihedron.
141 Standard_EXPORT virtual void ZBufferTriedronSetup (const Quantity_NameOfColor theXColor = Quantity_NOC_RED,
142 const Quantity_NameOfColor theYColor = Quantity_NOC_GREEN,
143 const Quantity_NameOfColor theZColor = Quantity_NOC_BLUE1,
144 const Standard_Real theSizeRatio = 0.8,
145 const Standard_Real theAxisDiametr = 0.05,
146 const Standard_Integer theNbFacettes = 12) Standard_OVERRIDE;
147
148 //! Displays trihedron echo.
149 Standard_EXPORT virtual void TriedronEcho (const Aspect_TypeOfTriedronEcho theType = Aspect_TOTE_NONE) Standard_OVERRIDE;
150
151 //! Returns data of a graduated trihedron
79104795 152 const Graphic3d_GraduatedTrihedron& GetGraduatedTrihedron() Standard_OVERRIDE
153 { return myGTrihedronData; }
c357e426 154
155 //! Displays Graduated Trihedron.
156 Standard_EXPORT virtual void GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData) Standard_OVERRIDE;
157
158 //! Erases Graduated Trihedron.
159 Standard_EXPORT virtual void GraduatedTrihedronErase() Standard_OVERRIDE;
160
161 //! Sets minimum and maximum points of scene bounding box for Graduated Trihedron stored in graphic view object.
162 //! @param theMin [in] the minimum point of scene.
163 //! @param theMax [in] the maximum point of scene.
164 Standard_EXPORT virtual void GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax) Standard_OVERRIDE;
165
c357e426 166 //! Dump active rendering buffer into specified memory buffer.
167 Standard_EXPORT virtual Standard_Boolean BufferDump (Image_PixMap& theImage,
168 const Graphic3d_BufferType& theBufferType) Standard_OVERRIDE;
169
c357e426 170 //! Export scene into the one of the Vector graphics formats (SVG, PS, PDF...).
171 //! In contrast to Bitmaps, Vector graphics is scalable (so you may got quality benefits
172 //! on printing to laser printer). Notice however that results may differ a lot and
173 //! do not contain some elements.
174 Standard_EXPORT virtual Standard_Boolean Export (const Standard_CString theFileName,
175 const Graphic3d_ExportFormat theFormat,
176 const Graphic3d_SortType theSortType = Graphic3d_ST_BSP_Tree) Standard_OVERRIDE;
177
178 //! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
179 Standard_EXPORT virtual void InvalidateBVHData (const Standard_Integer theLayerId) Standard_OVERRIDE;
180
181 //! Insert a new top-level z layer with the given ID.
182 Standard_EXPORT virtual void AddZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
183
184 //! Remove a z layer with the given ID.
185 Standard_EXPORT virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
2166f0fa 186
c357e426 187 //! Sets the settings for a single Z layer of specified view.
188 Standard_EXPORT virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
189 const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
b5ac8292 190
50d06d8f 191 //! Returns the maximum Z layer ID.
192 //! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
193 Standard_EXPORT virtual Standard_Integer ZLayerMax() const Standard_OVERRIDE;
194
195 //! Returns the bounding box of all structures displayed in the Z layer.
196 //! Never fails. If Z layer does not exist nothing happens.
197 Standard_EXPORT virtual void InvalidateZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId) const Standard_OVERRIDE;
198
199 //! Returns the bounding box of all structures displayed in the Z layer.
200 //! Never fails. If Z layer does not exist the empty box is returned.
201 Standard_EXPORT virtual Graphic3d_BndBox4f ZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId,
202 const Handle(Graphic3d_Camera)& theCamera,
203 const Standard_Integer theWindowWidth,
204 const Standard_Integer theWindowHeight,
205 const Standard_Boolean theToIgnoreInfiniteFlag) const Standard_OVERRIDE;
206
c357e426 207 //! Returns pointer to an assigned framebuffer object.
b128c892 208 Standard_EXPORT virtual Handle(Standard_Transient) FBO() const Standard_OVERRIDE;
2166f0fa 209
c357e426 210 //! Sets framebuffer object for offscreen rendering.
b128c892 211 Standard_EXPORT virtual void SetFBO (const Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 212
c357e426 213 //! Generate offscreen FBO in the graphic library.
214 //! If not supported on hardware returns NULL.
b128c892 215 Standard_EXPORT virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
216 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 217
c357e426 218 //! Remove offscreen FBO from the graphic library
b128c892 219 Standard_EXPORT virtual void FBORelease (Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 220
c357e426 221 //! Read offscreen FBO configuration.
b128c892 222 Standard_EXPORT virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
c357e426 223 Standard_Integer& theWidth,
224 Standard_Integer& theHeight,
225 Standard_Integer& theWidthMax,
226 Standard_Integer& theHeightMax) Standard_OVERRIDE;
227
228 //! Change offscreen FBO viewport.
b128c892 229 Standard_EXPORT virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
c357e426 230 const Standard_Integer theWidth,
231 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 232
c357e426 233public:
2166f0fa 234
c357e426 235 //! Returns background fill color.
236 Standard_EXPORT virtual Aspect_Background Background() const Standard_OVERRIDE;
59f45b7c 237
c357e426 238 //! Sets background fill color.
239 Standard_EXPORT virtual void SetBackground (const Aspect_Background& theBackground) Standard_OVERRIDE;
59f45b7c 240
c357e426 241 //! Returns gradient background fill colors.
242 Standard_EXPORT virtual Aspect_GradientBackground GradientBackground() const Standard_OVERRIDE;
2166f0fa 243
c357e426 244 //! Sets gradient background fill colors.
245 Standard_EXPORT virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) Standard_OVERRIDE;
246
247 //! Returns background image texture file path.
248 Standard_EXPORT virtual TCollection_AsciiString BackgroundImage() Standard_OVERRIDE { return myBackgroundImagePath; }
249
250 //! Sets background image texture file path.
251 Standard_EXPORT virtual void SetBackgroundImage (const TCollection_AsciiString& theFilePath) Standard_OVERRIDE;
252
253 //! Returns background image fill style.
254 Standard_EXPORT virtual Aspect_FillMethod BackgroundImageStyle() const Standard_OVERRIDE;
255
256 //! Sets background image fill style.
257 Standard_EXPORT virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) Standard_OVERRIDE;
258
259 //! Returns environment texture set for the view.
260 Standard_EXPORT virtual Handle(Graphic3d_TextureEnv) TextureEnv() const Standard_OVERRIDE { return myTextureEnvData; }
261
262 //! Sets environment texture for the view.
263 Standard_EXPORT virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) Standard_OVERRIDE;
264
265 //! Returns the state of frustum culling optimization.
266 virtual Standard_Boolean IsCullingEnabled() const Standard_OVERRIDE { return myCulling; }
267
268 //! Enables or disables frustum culling optimization.
269 virtual void SetCullingEnabled (const Standard_Boolean theIsEnabled) Standard_OVERRIDE { myCulling = theIsEnabled; }
270
271 //! Returns shading model of the view.
272 virtual Graphic3d_TypeOfShadingModel ShadingModel() const Standard_OVERRIDE { return myShadingModel; }
273
274 //! Sets shading model of the view.
275 virtual void SetShadingModel (const Graphic3d_TypeOfShadingModel theModel) Standard_OVERRIDE { myShadingModel = theModel; }
276
c357e426 277 //! Return backfacing model used for the view.
278 virtual Graphic3d_TypeOfBackfacingModel BackfacingModel() const Standard_OVERRIDE { return myBackfacing; }
279
280 //! Sets backfacing model for the view.
281 virtual void SetBackfacingModel (const Graphic3d_TypeOfBackfacingModel theModel) Standard_OVERRIDE { myBackfacing = theModel; }
282
283 //! Returns camera object of the view.
284 virtual const Handle(Graphic3d_Camera)& Camera() const Standard_OVERRIDE { return myCamera; }
285
286 //! Sets camera used by the view.
287 virtual void SetCamera (const Handle(Graphic3d_Camera)& theCamera) Standard_OVERRIDE { myCamera = theCamera; }
288
c357e426 289 //! Returns true if GL lighting is enabled.
290 virtual Standard_Boolean IsGLLightEnabled() const Standard_OVERRIDE { return myUseGLLight; }
291
292 //! Sets GL lighting enabled or disable state.
293 virtual void SetGLLightEnabled (const Standard_Boolean theIsEnabled) Standard_OVERRIDE { myUseGLLight = theIsEnabled; }
294
295 //! Returns list of lights of the view.
296 virtual const Graphic3d_ListOfCLight& Lights() const Standard_OVERRIDE { return myLights; }
297
298 //! Sets list of lights for the view.
299 virtual void SetLights (const Graphic3d_ListOfCLight& theLights) Standard_OVERRIDE
300 {
301 myLights = theLights;
302 myCurrLightSourceState = myStateCounter->Increment();
303 }
304
305 //! Returns list of clip planes set for the view.
306 virtual const Graphic3d_SequenceOfHClipPlane& ClipPlanes() const Standard_OVERRIDE { return myClipPlanes; }
307
308 //! Sets list of clip planes for the view.
309 virtual void SetClipPlanes (const Graphic3d_SequenceOfHClipPlane& thePlanes) Standard_OVERRIDE { myClipPlanes = thePlanes; }
310
311public:
312
313 //! Returns background color.
b6472664 314 const Quantity_ColorRGBA& BackgroundColor() const { return myBgColor; }
c357e426 315
316 //! Change trihedron.
317 OpenGl_Trihedron& ChangeTrihedron() { return myTrihedron; }
318
319 //! Change graduated trihedron.
320 OpenGl_GraduatedTrihedron& ChangeGraduatedTrihedron() { return myGraduatedTrihedron; }
321
322 void SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
323 const Handle(Graphic3d_TextureEnv)& theTexture);
324
2166f0fa 325 void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
c357e426 326
2166f0fa 327 void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
2166f0fa 328
c357e426 329 void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);
2166f0fa 330
e276548b 331 //! Returns list of OpenGL Z-layers.
332 const OpenGl_LayerList& LayerList() const { return myZLayers; }
333
334 //! Returns list of openGL light sources.
335 const OpenGl_ListOfLight& LightList() const { return myLights; }
336
c357e426 337 //! Returns OpenGL window implementation.
338 const Handle(OpenGl_Window) GlWindow() const { return myWindow; }
e276548b 339
c357e426 340 //! Returns OpenGL environment map.
341 const Handle(OpenGl_Texture)& GlTextureEnv() const { return myTextureEnv; }
e276548b 342
b7cd4ba7 343 //! Returns selector for BVH tree, providing a possibility to store information
344 //! about current view volume and to detect which objects are overlapping it.
345 OpenGl_BVHTreeSelector& BVHTreeSelector() { return myBVHSelector; }
346
a1954302 347 //! Returns true if there are immediate structures to display
348 bool HasImmediateStructures() const
349 {
c3282ec1 350 return myZLayers.NbImmediateStructures() != 0;
a1954302 351 }
352
c357e426 353protected: //! @name Internal methods for managing GL resources
354
355 //! Initializes OpenGl resource for environment texture.
356 void initTextureEnv (const Handle(OpenGl_Context)& theContext);
357
a521d90d 358protected: //! @name low-level redrawing sub-routines
c357e426 359
360 //! Redraws view for the given monographic camera projection, or left/right eye.
a521d90d 361 Standard_EXPORT virtual void redraw (const Graphic3d_Camera::Projection theProjection,
362 OpenGl_FrameBuffer* theReadDrawFbo);
2166f0fa 363
c357e426 364 //! Redraws view for the given monographic camera projection, or left/right eye.
365 //!
366 //! Method will blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
367 //! into presentation buffer (myMainSceneFbos -> offscreen FBO or
368 //! myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
369 //! and redraw immediate structures on top.
370 //!
371 //! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
372 //! the first step (blitting) will be skipped.
373 //!
374 //! @return false if immediate structures has been rendered directly into FrontBuffer
375 //! and Buffer Swap should not be called.
a521d90d 376 Standard_EXPORT virtual bool redrawImmediate (const Graphic3d_Camera::Projection theProjection,
377 OpenGl_FrameBuffer* theReadFbo,
378 OpenGl_FrameBuffer* theDrawFbo,
379 const Standard_Boolean theIsPartialUpdate = Standard_False);
b5ac8292 380
c357e426 381 //! Blit image from/to specified buffers.
a521d90d 382 Standard_EXPORT bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
383 OpenGl_FrameBuffer* theDrawFbo,
384 const Standard_Boolean theToFlip = Standard_False);
2166f0fa 385
c357e426 386 //! Setup default FBO.
a521d90d 387 Standard_EXPORT void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
2166f0fa 388
c357e426 389protected: //! @name Rendering of GL graphics (with prepared drawing buffer).
2166f0fa 390
c357e426 391 //! Renders the graphical contents of the view into the preprepared window or framebuffer.
392 //! @param theProjection [in] the projection that should be used for rendering.
393 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
394 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
a521d90d 395 Standard_EXPORT virtual void render (Graphic3d_Camera::Projection theProjection,
396 OpenGl_FrameBuffer* theReadDrawFbo,
397 const Standard_Boolean theToDrawImmediate);
2166f0fa 398
c357e426 399 //! Renders the graphical scene.
bf02aa7d 400 //! @param theProjection [in] the projection that is used for rendering.
c357e426 401 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
402 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 403 Standard_EXPORT virtual void renderScene (Graphic3d_Camera::Projection theProjection,
404 OpenGl_FrameBuffer* theReadDrawFbo,
a521d90d 405 const Standard_Boolean theToDrawImmediate);
406
407 //! Draw background (gradient / image)
408 Standard_EXPORT virtual void drawBackground (const Handle(OpenGl_Workspace)& theWorkspace);
2166f0fa 409
c357e426 410 //! Render set of structures presented in the view.
bf02aa7d 411 //! @param theProjection [in] the projection that is used for rendering.
c357e426 412 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
413 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 414 Standard_EXPORT virtual void renderStructs (Graphic3d_Camera::Projection theProjection,
415 OpenGl_FrameBuffer* theReadDrawFbo,
a521d90d 416 const Standard_Boolean theToDrawImmediate);
2166f0fa 417
c357e426 418 //! Renders trihedron.
419 void renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace);
2166f0fa 420
c357e426 421private:
392ac980 422
c357e426 423 //! Adds the structure to display lists of the view.
424 Standard_EXPORT virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
425 const Standard_Integer thePriority) Standard_OVERRIDE;
426
427 //! Erases the structure from display lists of the view.
428 Standard_EXPORT virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) Standard_OVERRIDE;
429
430 //! Change Z layer of a structure already presented in view.
431 Standard_EXPORT virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
432 const Graphic3d_ZLayerId theNewLayerId) Standard_OVERRIDE;
433
434 //! Changes the priority of a structure within its Z layer in the specified view.
435 Standard_EXPORT virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
436 const Standard_Integer theNewPriority) Standard_OVERRIDE;
437
50d06d8f 438 //! Returns zoom-scale factor.
439 Standard_EXPORT virtual Standard_Real considerZoomPersistenceObjects (const Graphic3d_ZLayerId theLayerId,
440 const Handle(Graphic3d_Camera)& theCamera,
441 const Standard_Integer theWindowWidth,
442 const Standard_Integer theWindowHeight,
443 const Standard_Boolean theToIgnoreInfiniteFlag) const Standard_OVERRIDE;
444
a521d90d 445private:
446
447 //! Copy content of Back buffer to the Front buffer.
448 void copyBackToFront();
449
450 //! Initialize blit quad.
451 OpenGl_VertexBuffer* initBlitQuad (const Standard_Boolean theToFlip);
452
453 //! Blend together views pair into stereo image.
3c4b62a4 454 void drawStereoPair (OpenGl_FrameBuffer* theDrawFbo);
a521d90d 455
c357e426 456protected:
457
458 OpenGl_GraphicDriver* myDriver;
459 Handle(OpenGl_Window) myWindow;
460 Handle(OpenGl_Workspace) myWorkspace;
461 Handle(OpenGl_Caps) myCaps;
462 Standard_Boolean& myDeviceLostFlag;
463 Standard_Boolean myWasRedrawnGL;
464
c357e426 465 Standard_Boolean myCulling;
466 Graphic3d_TypeOfShadingModel myShadingModel;
c357e426 467 Graphic3d_TypeOfBackfacingModel myBackfacing;
b6472664 468 Quantity_ColorRGBA myBgColor;
c357e426 469 Graphic3d_SequenceOfHClipPlane myClipPlanes;
470 Handle(Graphic3d_Camera) myCamera;
b128c892 471 Handle(OpenGl_FrameBuffer) myFBO;
c357e426 472 Standard_Boolean myUseGLLight;
473 Standard_Boolean myToShowTrihedron;
474 Standard_Boolean myToShowGradTrihedron;
475 TCollection_AsciiString myBackgroundImagePath;
476 Handle(Graphic3d_TextureEnv) myTextureEnvData;
477 Graphic3d_GraduatedTrihedron myGTrihedronData;
478
016e5959 479 OpenGl_ListOfLight myNoShadingLight;
c357e426 480 OpenGl_ListOfLight myLights;
481 OpenGl_LayerList myZLayers; //!< main list of displayed structure, sorted by layers
482
483 Graphic3d_WorldViewProjState myWorldViewProjState; //!< camera modification state
484 OpenGl_StateCounter* myStateCounter;
485 Standard_Size myCurrLightSourceState;
392ac980 486
487 typedef std::pair<Standard_Size, Standard_Size> StateInfo;
488
489 StateInfo myLastOrientationState;
490 StateInfo myLastViewMappingState;
491 StateInfo myLastLightSourceState;
30f0ad28 492
b7cd4ba7 493 //! Is needed for selection of overlapping objects and storage of the current view volume
494 OpenGl_BVHTreeSelector myBVHSelector;
495
c357e426 496 OpenGl_Trihedron myTrihedron;
497 OpenGl_GraduatedTrihedron myGraduatedTrihedron;
498
499 Handle(OpenGl_Texture) myTextureEnv;
500
c357e426 501protected: //! @name Rendering properties
502
503 //! Two framebuffers (left and right views) store cached main presentation
504 //! of the view (without presentation of immediate layers).
3c4b62a4 505 GLint myFboColorFormat; //!< sized format for color attachments
506 GLint myFboDepthFormat; //!< sized format for depth-stencil attachments
c357e426 507 Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
508 Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2]; //!< Additional buffers for immediate layer in stereo mode.
509 OpenGl_VertexBuffer myFullScreenQuad; //!< Vertices for full-screen quad rendering.
510 OpenGl_VertexBuffer myFullScreenQuadFlip;
511 Standard_Boolean myToFlipOutput; //!< Flag to draw result image upside-down
512 unsigned int myFrameCounter; //!< redraw counter, for debugging
7ccf8676 513 Standard_Boolean myHasFboBlit; //!< disable FBOs on failure
514 Standard_Boolean myToDisableMSAA; //!< disable MSAA after failure
c357e426 515 Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer)
516 Standard_Boolean myBackBufferRestored;
517 Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data
518
0b0320e7 519protected: //! @name Background parameters
520
521 OpenGl_AspectFace* myTextureParams; //!< Stores texture and its parameters for textured background
522 OpenGl_BackgroundArray* myBgGradientArray; //!< Primitive array for gradient background
523 OpenGl_BackgroundArray* myBgTextureArray; //!< Primitive array for texture background
524
91c60b57 525protected: //! @name data types related to ray-tracing
526
527 //! Result of OpenGL shaders initialization.
528 enum RaytraceInitStatus
529 {
530 OpenGl_RT_NONE,
531 OpenGl_RT_INIT,
532 OpenGl_RT_FAIL
533 };
534
535 //! Describes update mode (state).
536 enum RaytraceUpdateMode
537 {
538 OpenGl_GUM_CHECK, //!< check geometry state
539 OpenGl_GUM_PREPARE, //!< collect unchanged objects
540 OpenGl_GUM_REBUILD //!< rebuild changed and new objects
541 };
542
543 //! Defines frequently used shader variables.
544 enum ShaderVariableIndex
545 {
546 OpenGl_RT_aPosition,
547
189f85a3 548 // camera position
91c60b57 549 OpenGl_RT_uOriginLT,
550 OpenGl_RT_uOriginLB,
551 OpenGl_RT_uOriginRT,
552 OpenGl_RT_uOriginRB,
553 OpenGl_RT_uDirectLT,
554 OpenGl_RT_uDirectLB,
555 OpenGl_RT_uDirectRT,
556 OpenGl_RT_uDirectRB,
1d865689 557 OpenGl_RT_uViewMat,
91c60b57 558 OpenGl_RT_uUnviewMat,
559
189f85a3 560 // 3D scene params
91c60b57 561 OpenGl_RT_uSceneRad,
562 OpenGl_RT_uSceneEps,
563 OpenGl_RT_uLightAmbnt,
564 OpenGl_RT_uLightCount,
565
189f85a3 566 // background params
567 OpenGl_RT_uBackColorTop,
568 OpenGl_RT_uBackColorBot,
91c60b57 569
189f85a3 570 // ray-tracing params
571 OpenGl_RT_uShadowsEnabled,
572 OpenGl_RT_uReflectEnabled,
573 OpenGl_RT_uSphereMapEnabled,
574 OpenGl_RT_uSphereMapForBack,
575 OpenGl_RT_uTexSamplersArray,
8c820969 576 OpenGl_RT_uBlockedRngEnabled,
189f85a3 577
578 // sampled frame params
579 OpenGl_RT_uSampleWeight,
580 OpenGl_RT_uFrameRndSeed,
581
582 // adaptive FSAA params
91c60b57 583 OpenGl_RT_uOffsetX,
584 OpenGl_RT_uOffsetY,
585 OpenGl_RT_uSamples,
91c60b57 586
587 OpenGl_RT_NbVariables // special field
588 };
589
590 //! Defines texture samplers.
591 enum ShaderSamplerNames
592 {
593 OpenGl_RT_SceneNodeInfoTexture = 0,
594 OpenGl_RT_SceneMinPointTexture = 1,
595 OpenGl_RT_SceneMaxPointTexture = 2,
596 OpenGl_RT_SceneTransformTexture = 3,
597
598 OpenGl_RT_GeometryVertexTexture = 4,
599 OpenGl_RT_GeometryNormalTexture = 5,
600 OpenGl_RT_GeometryTexCrdTexture = 6,
601 OpenGl_RT_GeometryTriangTexture = 7,
602
603 OpenGl_RT_EnvironmentMapTexture = 8,
604
605 OpenGl_RT_RaytraceMaterialTexture = 9,
606 OpenGl_RT_RaytraceLightSrcTexture = 10,
607
189f85a3 608 OpenGl_RT_FsaaInputTexture = 11,
609 OpenGl_RT_PrevAccumTexture = 12,
1d865689 610 OpenGl_RT_DepthTexture = 13,
91c60b57 611
1d865689 612 OpenGl_RT_OpenGlColorTexture = 14,
613 OpenGl_RT_OpenGlDepthTexture = 15
91c60b57 614 };
615
616 //! Tool class for management of shader sources.
617 class ShaderSource
618 {
619 public:
620
189f85a3 621 //! Default shader prefix - empty string.
622 static const TCollection_AsciiString EMPTY_PREFIX;
623
91c60b57 624 //! Creates new uninitialized shader source.
625 ShaderSource()
626 {
627 //
628 }
629
73722cc9 630 public:
189f85a3 631
73722cc9 632 //! Returns error description in case of load fail.
633 const TCollection_AsciiString& ErrorDescription() const
634 {
635 return myError;
91c60b57 636 }
637
91c60b57 638 //! Returns prefix to insert before the source.
639 const TCollection_AsciiString& Prefix() const
640 {
641 return myPrefix;
642 }
643
644 //! Sets prefix to insert before the source.
645 void SetPrefix (const TCollection_AsciiString& thePrefix)
646 {
647 myPrefix = thePrefix;
648 }
649
650 //! Returns shader source combined with prefix.
651 TCollection_AsciiString Source() const;
652
653 //! Loads shader source from specified files.
73722cc9 654 Standard_Boolean Load (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
91c60b57 655
656 private:
657
658 TCollection_AsciiString mySource; //!< Source string of the shader object
659 TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
73722cc9 660 TCollection_AsciiString myError; //!< error state
91c60b57 661
662 };
663
664 //! Default ray-tracing depth.
665 static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
666
667 //! Default size of traversal stack.
f2474958 668 static const Standard_Integer THE_DEFAULT_STACK_SIZE = 10;
91c60b57 669
670 //! Compile-time ray-tracing parameters.
671 struct RaytracingParams
672 {
673 //! Actual size of traversal stack in shader program.
674 Standard_Integer StackSize;
675
676 //! Actual ray-tracing depth (number of ray bounces).
677 Standard_Integer NbBounces;
678
f483f2ed 679 //! Enables/disables light propagation through transparent media.
91c60b57 680 Standard_Boolean TransparentShadows;
681
189f85a3 682 //! Enables/disables global illumination (GI) effects.
683 Standard_Boolean GlobalIllumination;
684
f483f2ed 685 //! Enables/disables the use of OpenGL bindless textures.
686 Standard_Boolean UseBindlessTextures;
687
91c60b57 688 //! Creates default compile-time ray-tracing parameters.
689 RaytracingParams()
690 : StackSize (THE_DEFAULT_STACK_SIZE),
691 NbBounces (THE_DEFAULT_NB_BOUNCES),
f483f2ed 692 TransparentShadows (Standard_False),
189f85a3 693 GlobalIllumination (Standard_False),
f483f2ed 694 UseBindlessTextures (Standard_False)
91c60b57 695 {
696 //
697 }
698 };
699
d4aaad5b 700 //! Describes state of OpenGL structure.
701 struct StructState
702 {
703 Standard_Size StructureState;
704 Standard_Size InstancedState;
705
706 //! Creates new structure state.
707 StructState (const Standard_Size theStructureState = 0,
708 const Standard_Size theInstancedState = 0)
709 : StructureState (theStructureState),
710 InstancedState (theInstancedState)
711 {
712 //
713 }
714
715 //! Creates new structure state.
716 StructState (const OpenGl_Structure* theStructure)
717 {
718 StructureState = theStructure->ModificationState();
719
720 InstancedState = theStructure->InstancedStructure() != NULL ?
721 theStructure->InstancedStructure()->ModificationState() : 0;
722 }
723 };
724
91c60b57 725protected: //! @name methods related to ray-tracing
726
727 //! Updates 3D scene geometry for ray-tracing.
728 Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
729 const Standard_Integer theViewId,
730 const Handle(OpenGl_Context)& theGlContext);
731
732 //! Updates 3D scene light sources for ray-tracing.
733 Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
734
735 //! Updates environment map for ray-tracing.
736 Standard_Boolean updateRaytraceEnvironmentMap (const Handle(OpenGl_Context)& theGlContext);
737
738 //! Checks to see if the OpenGL structure is modified.
739 Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
740
741 //! Adds OpenGL structure to ray-traced scene geometry.
742 Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
743 const Handle(OpenGl_Context)& theGlContext);
744
745 //! Adds OpenGL groups to ray-traced scene geometry.
8c820969 746 Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
747 const OpenGl_RaytraceMaterial& theStructMat,
6bd94e0d 748 const Graphic3d_Mat4* theTransform,
8c820969 749 const Handle(OpenGl_Context)& theGlContext);
91c60b57 750
751 //! Creates ray-tracing material properties.
752 OpenGl_RaytraceMaterial convertMaterial (const OpenGl_AspectFace* theAspect,
753 const Handle(OpenGl_Context)& theGlContext);
754
755 //! Adds OpenGL primitive array to ray-traced scene geometry.
756 OpenGl_TriangleSet* addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
757 const Standard_Integer theMatID,
758 const OpenGl_Mat4* theTrans);
759
760 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
761 Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
762 const Standard_Integer theMatID,
763 const Standard_Integer theCount,
764 const Standard_Integer theOffset,
765 const OpenGl_PrimitiveArray& theArray);
766
767 //! Adds OpenGL triangle array to ray-traced scene geometry.
768 Standard_Boolean addRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
769 const Standard_Integer theMatID,
770 const Standard_Integer theCount,
771 const Standard_Integer theOffset,
772 const Handle(Graphic3d_IndexBuffer)& theIndices);
773
774 //! Adds OpenGL triangle fan array to ray-traced scene geometry.
775 Standard_Boolean addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
776 const Standard_Integer theMatID,
777 const Standard_Integer theCount,
778 const Standard_Integer theOffset,
779 const Handle(Graphic3d_IndexBuffer)& theIndices);
780
781 //! Adds OpenGL triangle strip array to ray-traced scene geometry.
782 Standard_Boolean addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
783 const Standard_Integer theMatID,
784 const Standard_Integer theCount,
785 const Standard_Integer theOffset,
786 const Handle(Graphic3d_IndexBuffer)& theIndices);
787
788 //! Adds OpenGL quadrangle array to ray-traced scene geometry.
789 Standard_Boolean addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
790 const Standard_Integer theMatID,
791 const Standard_Integer theCount,
792 const Standard_Integer theOffset,
793 const Handle(Graphic3d_IndexBuffer)& theIndices);
794
795 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
796 Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
797 const Standard_Integer theMatID,
798 const Standard_Integer theCount,
799 const Standard_Integer theOffset,
800 const Handle(Graphic3d_IndexBuffer)& theIndices);
801
802 //! Adds OpenGL polygon array to ray-traced scene geometry.
803 Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
804 const Standard_Integer theMatID,
805 const Standard_Integer theCount,
806 const Standard_Integer theOffset,
807 const Handle(Graphic3d_IndexBuffer)& theIndices);
808
809 //! Uploads ray-trace data to the GPU.
810 Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
811
812 //! Generates shader prefix based on current ray-tracing options.
813 TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
814
815 //! Performs safe exit when shaders initialization fails.
816 Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
817 const Handle(OpenGl_Context)& theGlContext);
818
819 //! Loads and compiles shader object from specified source.
820 Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
821 const ShaderSource& theSource,
822 const Handle(OpenGl_Context)& theGlContext);
823
189f85a3 824 //! Creates shader program from the given vertex and fragment shaders.
825 Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
826 const Handle(OpenGl_ShaderObject)& theVertShader,
827 const Handle(OpenGl_ShaderObject)& theFragShader);
828
91c60b57 829 //! Initializes OpenGL/GLSL shader programs.
c357e426 830 Standard_Boolean initRaytraceResources (const Handle(OpenGl_Context)& theGlContext);
91c60b57 831
832 //! Releases OpenGL/GLSL shader programs.
833 void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext);
834
bf02aa7d 835 //! Updates auxiliary OpenGL frame buffers.
836 Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
91c60b57 837 const Standard_Integer theSizeY,
838 const Handle(OpenGl_Context)& theGlContext);
839
840 //! Generates viewing rays for corners of screen quad.
841 void updateCamera (const OpenGl_Mat4& theOrientation,
842 const OpenGl_Mat4& theViewMapping,
843 OpenGl_Vec3* theOrigins,
844 OpenGl_Vec3* theDirects,
1d865689 845 OpenGl_Mat4& theView,
91c60b57 846 OpenGl_Mat4& theUnView);
847
848 //! Binds ray-trace textures to corresponding texture units.
849 void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
850
851 //! Unbinds ray-trace textures from corresponding texture unit.
852 void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
853
854 //! Sets uniform state for the given ray-tracing shader program.
c357e426 855 Standard_Boolean setUniformState (const OpenGl_Vec3* theOrigins,
91c60b57 856 const OpenGl_Vec3* theDirects,
1d865689 857 const OpenGl_Mat4& theViewMat,
91c60b57 858 const OpenGl_Mat4& theUnviewMat,
859 const Standard_Integer theProgramId,
860 const Handle(OpenGl_Context)& theGlContext);
861
862 //! Runs ray-tracing shader programs.
c357e426 863 Standard_Boolean runRaytraceShaders (const Standard_Integer theSizeX,
91c60b57 864 const Standard_Integer theSizeY,
865 const OpenGl_Vec3* theOrigins,
866 const OpenGl_Vec3* theDirects,
1d865689 867 const OpenGl_Mat4& theViewMat,
91c60b57 868 const OpenGl_Mat4& theUnviewMat,
bf02aa7d 869 Graphic3d_Camera::Projection theProjection,
38a0206f 870 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 871 const Handle(OpenGl_Context)& theGlContext);
872
873 //! Redraws the window using OpenGL/GLSL ray-tracing.
c357e426 874 Standard_Boolean raytrace (const Standard_Integer theSizeX,
91c60b57 875 const Standard_Integer theSizeY,
bf02aa7d 876 Graphic3d_Camera::Projection theProjection,
38a0206f 877 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 878 const Handle(OpenGl_Context)& theGlContext);
879
880protected: //! @name fields related to ray-tracing
881
882 //! Result of shaders initialization.
883 RaytraceInitStatus myRaytraceInitStatus;
884
885 //! Is geometry data valid?
886 Standard_Boolean myIsRaytraceDataValid;
887
888 //! Warning about missing extension GL_ARB_bindless_texture has been displayed?
889 Standard_Boolean myIsRaytraceWarnTextures;
890
891 //! 3D scene geometry data for ray-tracing.
892 OpenGl_RaytraceGeometry myRaytraceGeometry;
893
894 //! Compile-time ray-tracing parameters.
895 RaytracingParams myRaytraceParameters;
896
897 //! Radius of bounding sphere of the scene.
898 Standard_ShortReal myRaytraceSceneRadius;
899 //! Scene epsilon to prevent self-intersections.
900 Standard_ShortReal myRaytraceSceneEpsilon;
901
902 //! OpenGL/GLSL source of ray-tracing fragment shader.
903 ShaderSource myRaytraceShaderSource;
904 //! OpenGL/GLSL source of adaptive-AA fragment shader.
905 ShaderSource myPostFSAAShaderSource;
906
907 //! OpenGL/GLSL ray-tracing fragment shader.
908 Handle(OpenGl_ShaderObject) myRaytraceShader;
909 //! OpenGL/GLSL adaptive-AA fragment shader.
910 Handle(OpenGl_ShaderObject) myPostFSAAShader;
911
912 //! OpenGL/GLSL ray-tracing shader program.
913 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
914 //! OpenGL/GLSL adaptive-AA shader program.
915 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
189f85a3 916 //! OpenGL/GLSL program for displaying texture.
917 Handle(OpenGl_ShaderProgram) myOutImageProgram;
91c60b57 918
919 //! Texture buffer of data records of bottom-level BVH nodes.
920 Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
921 //! Texture buffer of minimum points of bottom-level BVH nodes.
922 Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
923 //! Texture buffer of maximum points of bottom-level BVH nodes.
924 Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;
925 //! Texture buffer of transformations of high-level BVH nodes.
926 Handle(OpenGl_TextureBufferArb) mySceneTransformTexture;
927
928 //! Texture buffer of vertex coords.
929 Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture;
930 //! Texture buffer of vertex normals.
931 Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture;
932 //! Texture buffer of vertex UV coords.
933 Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture;
934 //! Texture buffer of triangle indices.
935 Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture;
936
937 //! Texture buffer of material properties.
938 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
939 //! Texture buffer of light source properties.
940 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
941
942 //! 1st framebuffer (FBO) to perform adaptive FSAA.
bf02aa7d 943 Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
91c60b57 944 //! 2nd framebuffer (FBO) to perform adaptive FSAA.
bf02aa7d 945 Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
91c60b57 946 //! Framebuffer (FBO) for preliminary OpenGL output.
947 Handle(OpenGl_FrameBuffer) myOpenGlFBO;
3c4b62a4 948 Handle(OpenGl_FrameBuffer) myOpenGlFBO2;
91c60b57 949
950 //! Vertex buffer (VBO) for drawing dummy quad.
951 OpenGl_VertexBuffer myRaytraceScreenQuad;
952
953 //! Cached locations of frequently used uniform variables.
954 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
955
956 //! State of OpenGL structures reflected to ray-tracing.
d4aaad5b 957 std::map<const OpenGl_Structure*, StructState> myStructureStates;
91c60b57 958
959 //! PrimitiveArray to TriangleSet map for scene partial update.
960 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
961
189f85a3 962 //! Set of IDs of non-raytracable elements (to detect updates).
963 std::set<Standard_Integer> myNonRaytraceStructureIDs;
964
965 //! Render filter to filter out all raytracable structures.
91c60b57 966 Handle(OpenGl_RaytraceFilter) myRaytraceFilter;
967
968 //! Marks if environment map should be updated.
969 Standard_Boolean myToUpdateEnvironmentMap;
970
971 //! State of OpenGL layer list.
189f85a3 972 Standard_Size myLayerListState;
973
974 //! Number of accumulated frames (for progressive rendering).
975 Standard_Integer myAccumFrames;
976
977 //! Stored ray origins used for detection of camera movements.
978 OpenGl_Vec3 myPreviousOrigins[3];
979
980 //! Bullard RNG to produce random sequence.
981 math_BullardGenerator myRNG;
91c60b57 982
679ecdee 983public:
984
1c35b92f 985 DEFINE_STANDARD_ALLOC
92efcf78 986 DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
679ecdee 987
c357e426 988 friend class OpenGl_GraphicDriver;
a89742cf 989 friend class OpenGl_Workspace;
2166f0fa
SK
990};
991
679ecdee 992#endif // _OpenGl_View_Header