0028101: Visualization, Select3D_SensitiveSet - fix NULL dereference on re-adding...
[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>
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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>
2166f0fa 29
2166f0fa 30#include <Graphic3d_CView.hxx>
a79f67f8 31#include <Graphic3d_GraduatedTrihedron.hxx>
51b10cd4 32#include <Graphic3d_SequenceOfHClipPlane.hxx>
c357e426 33#include <Graphic3d_TypeOfShadingModel.hxx>
825aa485 34#include <Graphic3d_WorldViewProjState.hxx>
c5751993 35#include <Graphic3d_ZLayerSettings.hxx>
2166f0fa 36
0b0320e7 37#include <OpenGl_AspectFace.hxx>
38#include <OpenGl_BackgroundArray.hxx>
b7cd4ba7 39#include <OpenGl_BVHTreeSelector.hxx>
c357e426 40#include <OpenGl_Context.hxx>
41#include <OpenGl_FrameBuffer.hxx>
42#include <OpenGl_GraduatedTrihedron.hxx>
59f45b7c 43#include <OpenGl_LayerList.hxx>
2166f0fa 44#include <OpenGl_Light.hxx>
73192b37 45#include <OpenGl_LineAttributes.hxx>
c357e426 46#include <OpenGl_SceneGeometry.hxx>
47#include <OpenGl_Structure.hxx>
c357e426 48#include <OpenGl_Window.hxx>
49#include <OpenGl_Workspace.hxx>
3a9b5dc8 50#include <OpenGl_TileSampler.hxx>
2166f0fa 51
c357e426 52#include <map>
53#include <set>
2166f0fa 54
b5ac8292 55struct OpenGl_Matrix;
2166f0fa 56
c357e426 57class Graphic3d_StructureManager;
58class OpenGl_GraphicDriver;
59class OpenGl_StateCounter;
60class OpenGl_RaytraceMaterial;
61class OpenGl_TriangleSet;
62class OpenGl_Workspace;
c04c30b3 63class OpenGl_View;
c357e426 64DEFINE_STANDARD_HANDLE(OpenGl_View,Graphic3d_CView)
c04c30b3 65
c357e426 66//! Implementation of OpenGl view.
67class OpenGl_View : public Graphic3d_CView
2166f0fa 68{
c357e426 69
70public:
71
72 //! Constructor.
73 Standard_EXPORT OpenGl_View (const Handle(Graphic3d_StructureManager)& theMgr,
74 const Handle(OpenGl_GraphicDriver)& theDriver,
75 const Handle(OpenGl_Caps)& theCaps,
76 Standard_Boolean& theDeviceLostFlag,
77 OpenGl_StateCounter* theCounter);
78
79 //! Default destructor.
80 Standard_EXPORT virtual ~OpenGl_View();
2166f0fa 81
62e1beed 82 Standard_EXPORT void ReleaseGlResources (const Handle(OpenGl_Context)& theCtx);
bf75be98 83
c357e426 84 //! Deletes and erases the view.
85 Standard_EXPORT virtual void Remove() Standard_OVERRIDE;
86
87 //! @param theDrawToFrontBuffer Advanced option to modify rendering mode:
88 //! 1. TRUE. Drawing immediate mode structures directly to the front buffer over the scene image.
89 //! Fast, so preferred for interactive work (used by default).
90 //! However these extra drawings will be missed in image dump since it is performed from back buffer.
91 //! Notice that since no pre-buffering used the V-Sync will be ignored and rendering could be seen
92 //! in run-time (in case of slow hardware) and/or tearing may appear.
93 //! So this is strongly recommended to draw only simple (fast) structures.
94 //! 2. FALSE. Drawing immediate mode structures to the back buffer.
95 //! The complete scene is redrawn first, so this mode is slower if scene contains complex data and/or V-Sync
96 //! is turned on. But it works in any case and is especially useful for view dump because the dump image is read
97 //! from the back buffer.
98 //! @return previous mode.
99 Standard_EXPORT Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer) Standard_OVERRIDE;
100
101 //! Creates and maps rendering window to the view.
c357e426 102 //! @param theWindow [in] the window.
103 //! @param theContext [in] the rendering context. If NULL the context will be created internally.
a521d90d 104 Standard_EXPORT virtual void SetWindow (const Handle(Aspect_Window)& theWindow,
105 const Aspect_RenderingContext theContext) Standard_OVERRIDE;
c357e426 106
107 //! Returns window associated with the view.
79104795 108 virtual Handle(Aspect_Window) Window() const Standard_OVERRIDE
109 { return myWindow->PlatformWindow(); }
c357e426 110
111 //! Returns True if the window associated to the view is defined.
79104795 112 virtual Standard_Boolean IsDefined() const Standard_OVERRIDE
113 { return !myWindow.IsNull(); }
c357e426 114
115 //! Handle changing size of the rendering window.
116 Standard_EXPORT virtual void Resized() Standard_OVERRIDE;
117
118 //! Redraw content of the view.
119 Standard_EXPORT virtual void Redraw() Standard_OVERRIDE;
120
121 //! Redraw immediate content of the view.
122 Standard_EXPORT virtual void RedrawImmediate() Standard_OVERRIDE;
123
124 //! Marks BVH tree for given priority list as dirty and marks primitive set for rebuild.
125 Standard_EXPORT virtual void Invalidate() Standard_OVERRIDE;
126
127 //! Return true if view content cache has been invalidated.
d2eddacc 128 virtual Standard_Boolean IsInvalidated() Standard_OVERRIDE { return !myBackBufferRestored; }
c357e426 129
c357e426 130 //! Returns data of a graduated trihedron
79104795 131 const Graphic3d_GraduatedTrihedron& GetGraduatedTrihedron() Standard_OVERRIDE
132 { return myGTrihedronData; }
c357e426 133
134 //! Displays Graduated Trihedron.
135 Standard_EXPORT virtual void GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData) Standard_OVERRIDE;
136
137 //! Erases Graduated Trihedron.
138 Standard_EXPORT virtual void GraduatedTrihedronErase() Standard_OVERRIDE;
139
140 //! Sets minimum and maximum points of scene bounding box for Graduated Trihedron stored in graphic view object.
141 //! @param theMin [in] the minimum point of scene.
142 //! @param theMax [in] the maximum point of scene.
143 Standard_EXPORT virtual void GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax) Standard_OVERRIDE;
144
c357e426 145 //! Dump active rendering buffer into specified memory buffer.
146 Standard_EXPORT virtual Standard_Boolean BufferDump (Image_PixMap& theImage,
147 const Graphic3d_BufferType& theBufferType) Standard_OVERRIDE;
148
c357e426 149 //! Export scene into the one of the Vector graphics formats (SVG, PS, PDF...).
150 //! In contrast to Bitmaps, Vector graphics is scalable (so you may got quality benefits
151 //! on printing to laser printer). Notice however that results may differ a lot and
152 //! do not contain some elements.
153 Standard_EXPORT virtual Standard_Boolean Export (const Standard_CString theFileName,
154 const Graphic3d_ExportFormat theFormat,
155 const Graphic3d_SortType theSortType = Graphic3d_ST_BSP_Tree) Standard_OVERRIDE;
156
157 //! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
158 Standard_EXPORT virtual void InvalidateBVHData (const Standard_Integer theLayerId) Standard_OVERRIDE;
159
160 //! Insert a new top-level z layer with the given ID.
161 Standard_EXPORT virtual void AddZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
162
163 //! Remove a z layer with the given ID.
164 Standard_EXPORT virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
2166f0fa 165
c357e426 166 //! Sets the settings for a single Z layer of specified view.
167 Standard_EXPORT virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
168 const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
b5ac8292 169
50d06d8f 170 //! Returns the maximum Z layer ID.
171 //! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
172 Standard_EXPORT virtual Standard_Integer ZLayerMax() const Standard_OVERRIDE;
173
174 //! Returns the bounding box of all structures displayed in the Z layer.
175 //! Never fails. If Z layer does not exist nothing happens.
176 Standard_EXPORT virtual void InvalidateZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId) const Standard_OVERRIDE;
177
178 //! Returns the bounding box of all structures displayed in the Z layer.
3fe9ce0e 179 //! If Z layer does not exist the empty box is returned.
180 //! @param theLayerId layer identifier
181 //! @param theCamera camera definition
182 //! @param theWindowWidth viewport width (for applying transformation-persistence)
183 //! @param theWindowHeight viewport height (for applying transformation-persistence)
184 //! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
185 //! @return computed bounding box
7c3ef2f7 186 Standard_EXPORT virtual Bnd_Box ZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId,
187 const Handle(Graphic3d_Camera)& theCamera,
188 const Standard_Integer theWindowWidth,
189 const Standard_Integer theWindowHeight,
190 const Standard_Boolean theToIncludeAuxiliary) const Standard_OVERRIDE;
50d06d8f 191
c357e426 192 //! Returns pointer to an assigned framebuffer object.
b128c892 193 Standard_EXPORT virtual Handle(Standard_Transient) FBO() const Standard_OVERRIDE;
2166f0fa 194
c357e426 195 //! Sets framebuffer object for offscreen rendering.
b128c892 196 Standard_EXPORT virtual void SetFBO (const Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 197
c357e426 198 //! Generate offscreen FBO in the graphic library.
199 //! If not supported on hardware returns NULL.
b128c892 200 Standard_EXPORT virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
201 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 202
c357e426 203 //! Remove offscreen FBO from the graphic library
b128c892 204 Standard_EXPORT virtual void FBORelease (Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 205
c357e426 206 //! Read offscreen FBO configuration.
b128c892 207 Standard_EXPORT virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
c357e426 208 Standard_Integer& theWidth,
209 Standard_Integer& theHeight,
210 Standard_Integer& theWidthMax,
211 Standard_Integer& theHeightMax) Standard_OVERRIDE;
212
213 //! Change offscreen FBO viewport.
b128c892 214 Standard_EXPORT virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
c357e426 215 const Standard_Integer theWidth,
216 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 217
c357e426 218public:
2166f0fa 219
c357e426 220 //! Returns background fill color.
221 Standard_EXPORT virtual Aspect_Background Background() const Standard_OVERRIDE;
59f45b7c 222
c357e426 223 //! Sets background fill color.
224 Standard_EXPORT virtual void SetBackground (const Aspect_Background& theBackground) Standard_OVERRIDE;
59f45b7c 225
c357e426 226 //! Returns gradient background fill colors.
227 Standard_EXPORT virtual Aspect_GradientBackground GradientBackground() const Standard_OVERRIDE;
2166f0fa 228
c357e426 229 //! Sets gradient background fill colors.
230 Standard_EXPORT virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) Standard_OVERRIDE;
231
232 //! Returns background image texture file path.
233 Standard_EXPORT virtual TCollection_AsciiString BackgroundImage() Standard_OVERRIDE { return myBackgroundImagePath; }
234
235 //! Sets background image texture file path.
236 Standard_EXPORT virtual void SetBackgroundImage (const TCollection_AsciiString& theFilePath) Standard_OVERRIDE;
237
238 //! Returns background image fill style.
239 Standard_EXPORT virtual Aspect_FillMethod BackgroundImageStyle() const Standard_OVERRIDE;
240
241 //! Sets background image fill style.
242 Standard_EXPORT virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) Standard_OVERRIDE;
243
244 //! Returns environment texture set for the view.
245 Standard_EXPORT virtual Handle(Graphic3d_TextureEnv) TextureEnv() const Standard_OVERRIDE { return myTextureEnvData; }
246
247 //! Sets environment texture for the view.
248 Standard_EXPORT virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) Standard_OVERRIDE;
249
250 //! Returns the state of frustum culling optimization.
251 virtual Standard_Boolean IsCullingEnabled() const Standard_OVERRIDE { return myCulling; }
252
253 //! Enables or disables frustum culling optimization.
254 virtual void SetCullingEnabled (const Standard_Boolean theIsEnabled) Standard_OVERRIDE { myCulling = theIsEnabled; }
255
256 //! Returns shading model of the view.
257 virtual Graphic3d_TypeOfShadingModel ShadingModel() const Standard_OVERRIDE { return myShadingModel; }
258
259 //! Sets shading model of the view.
260 virtual void SetShadingModel (const Graphic3d_TypeOfShadingModel theModel) Standard_OVERRIDE { myShadingModel = theModel; }
261
c357e426 262 //! Return backfacing model used for the view.
263 virtual Graphic3d_TypeOfBackfacingModel BackfacingModel() const Standard_OVERRIDE { return myBackfacing; }
264
265 //! Sets backfacing model for the view.
266 virtual void SetBackfacingModel (const Graphic3d_TypeOfBackfacingModel theModel) Standard_OVERRIDE { myBackfacing = theModel; }
267
268 //! Returns camera object of the view.
269 virtual const Handle(Graphic3d_Camera)& Camera() const Standard_OVERRIDE { return myCamera; }
270
7c3ef2f7 271 //! Returns local camera origin currently set for rendering, might be modified during rendering.
272 const gp_XYZ& LocalOrigin() const { return myLocalOrigin; }
273
274 //! Setup local camera origin currently set for rendering.
275 Standard_EXPORT void SetLocalOrigin (const gp_XYZ& theOrigin);
276
c357e426 277 //! Sets camera used by the view.
7c3ef2f7 278 Standard_EXPORT virtual void SetCamera (const Handle(Graphic3d_Camera)& theCamera) Standard_OVERRIDE;
c357e426 279
c357e426 280 //! Returns list of lights of the view.
281 virtual const Graphic3d_ListOfCLight& Lights() const Standard_OVERRIDE { return myLights; }
282
283 //! Sets list of lights for the view.
284 virtual void SetLights (const Graphic3d_ListOfCLight& theLights) Standard_OVERRIDE
285 {
286 myLights = theLights;
287 myCurrLightSourceState = myStateCounter->Increment();
288 }
289
290 //! Returns list of clip planes set for the view.
3202bf1e 291 virtual const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const Standard_OVERRIDE { return myClipPlanes; }
c357e426 292
293 //! Sets list of clip planes for the view.
3202bf1e 294 virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes) Standard_OVERRIDE { myClipPlanes = thePlanes; }
c357e426 295
26d9c835 296 //! Fill in the dictionary with diagnostic info.
297 //! Should be called within rendering thread.
298 //!
299 //! This API should be used only for user output or for creating automated reports.
300 //! The format of returned information (e.g. key-value layout)
301 //! is NOT part of this API and can be changed at any time.
302 //! Thus application should not parse returned information to weed out specific parameters.
303 Standard_EXPORT virtual void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
304 Graphic3d_DiagnosticInfo theFlags) const Standard_OVERRIDE;
305
c357e426 306public:
307
308 //! Returns background color.
b6472664 309 const Quantity_ColorRGBA& BackgroundColor() const { return myBgColor; }
c357e426 310
c357e426 311 //! Change graduated trihedron.
312 OpenGl_GraduatedTrihedron& ChangeGraduatedTrihedron() { return myGraduatedTrihedron; }
313
314 void SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
315 const Handle(Graphic3d_TextureEnv)& theTexture);
316
2166f0fa 317 void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
c357e426 318
2166f0fa 319 void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
2166f0fa 320
c357e426 321 void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);
2166f0fa 322
e276548b 323 //! Returns list of OpenGL Z-layers.
324 const OpenGl_LayerList& LayerList() const { return myZLayers; }
325
326 //! Returns list of openGL light sources.
327 const OpenGl_ListOfLight& LightList() const { return myLights; }
328
c357e426 329 //! Returns OpenGL window implementation.
330 const Handle(OpenGl_Window) GlWindow() const { return myWindow; }
e276548b 331
c357e426 332 //! Returns OpenGL environment map.
333 const Handle(OpenGl_Texture)& GlTextureEnv() const { return myTextureEnv; }
e276548b 334
b7cd4ba7 335 //! Returns selector for BVH tree, providing a possibility to store information
336 //! about current view volume and to detect which objects are overlapping it.
337 OpenGl_BVHTreeSelector& BVHTreeSelector() { return myBVHSelector; }
338
a1954302 339 //! Returns true if there are immediate structures to display
340 bool HasImmediateStructures() const
341 {
c3282ec1 342 return myZLayers.NbImmediateStructures() != 0;
a1954302 343 }
344
c357e426 345protected: //! @name Internal methods for managing GL resources
346
347 //! Initializes OpenGl resource for environment texture.
348 void initTextureEnv (const Handle(OpenGl_Context)& theContext);
349
a521d90d 350protected: //! @name low-level redrawing sub-routines
c357e426 351
352 //! Redraws view for the given monographic camera projection, or left/right eye.
a521d90d 353 Standard_EXPORT virtual void redraw (const Graphic3d_Camera::Projection theProjection,
354 OpenGl_FrameBuffer* theReadDrawFbo);
2166f0fa 355
c357e426 356 //! Redraws view for the given monographic camera projection, or left/right eye.
357 //!
358 //! Method will blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
359 //! into presentation buffer (myMainSceneFbos -> offscreen FBO or
360 //! myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
361 //! and redraw immediate structures on top.
362 //!
363 //! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
364 //! the first step (blitting) will be skipped.
365 //!
366 //! @return false if immediate structures has been rendered directly into FrontBuffer
367 //! and Buffer Swap should not be called.
a521d90d 368 Standard_EXPORT virtual bool redrawImmediate (const Graphic3d_Camera::Projection theProjection,
369 OpenGl_FrameBuffer* theReadFbo,
370 OpenGl_FrameBuffer* theDrawFbo,
371 const Standard_Boolean theIsPartialUpdate = Standard_False);
b5ac8292 372
c357e426 373 //! Blit image from/to specified buffers.
a521d90d 374 Standard_EXPORT bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
375 OpenGl_FrameBuffer* theDrawFbo,
376 const Standard_Boolean theToFlip = Standard_False);
2166f0fa 377
c357e426 378 //! Setup default FBO.
a521d90d 379 Standard_EXPORT void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
2166f0fa 380
c357e426 381protected: //! @name Rendering of GL graphics (with prepared drawing buffer).
2166f0fa 382
c357e426 383 //! Renders the graphical contents of the view into the preprepared window or framebuffer.
384 //! @param theProjection [in] the projection that should be used for rendering.
385 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
386 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
a521d90d 387 Standard_EXPORT virtual void render (Graphic3d_Camera::Projection theProjection,
388 OpenGl_FrameBuffer* theReadDrawFbo,
389 const Standard_Boolean theToDrawImmediate);
2166f0fa 390
c357e426 391 //! Renders the graphical scene.
bf02aa7d 392 //! @param theProjection [in] the projection that is used for rendering.
c357e426 393 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
394 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 395 Standard_EXPORT virtual void renderScene (Graphic3d_Camera::Projection theProjection,
396 OpenGl_FrameBuffer* theReadDrawFbo,
a521d90d 397 const Standard_Boolean theToDrawImmediate);
398
399 //! Draw background (gradient / image)
400 Standard_EXPORT virtual void drawBackground (const Handle(OpenGl_Workspace)& theWorkspace);
2166f0fa 401
c357e426 402 //! Render set of structures presented in the view.
bf02aa7d 403 //! @param theProjection [in] the projection that is used for rendering.
c357e426 404 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
405 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 406 Standard_EXPORT virtual void renderStructs (Graphic3d_Camera::Projection theProjection,
407 OpenGl_FrameBuffer* theReadDrawFbo,
a521d90d 408 const Standard_Boolean theToDrawImmediate);
2166f0fa 409
c357e426 410 //! Renders trihedron.
411 void renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace);
2166f0fa 412
c357e426 413private:
392ac980 414
c357e426 415 //! Adds the structure to display lists of the view.
416 Standard_EXPORT virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
417 const Standard_Integer thePriority) Standard_OVERRIDE;
418
419 //! Erases the structure from display lists of the view.
420 Standard_EXPORT virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) Standard_OVERRIDE;
421
422 //! Change Z layer of a structure already presented in view.
423 Standard_EXPORT virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
424 const Graphic3d_ZLayerId theNewLayerId) Standard_OVERRIDE;
425
426 //! Changes the priority of a structure within its Z layer in the specified view.
427 Standard_EXPORT virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
428 const Standard_Integer theNewPriority) Standard_OVERRIDE;
429
50d06d8f 430 //! Returns zoom-scale factor.
431 Standard_EXPORT virtual Standard_Real considerZoomPersistenceObjects (const Graphic3d_ZLayerId theLayerId,
432 const Handle(Graphic3d_Camera)& theCamera,
433 const Standard_Integer theWindowWidth,
3fe9ce0e 434 const Standard_Integer theWindowHeight) const Standard_OVERRIDE;
50d06d8f 435
a521d90d 436private:
437
438 //! Copy content of Back buffer to the Front buffer.
439 void copyBackToFront();
440
441 //! Initialize blit quad.
442 OpenGl_VertexBuffer* initBlitQuad (const Standard_Boolean theToFlip);
443
444 //! Blend together views pair into stereo image.
3c4b62a4 445 void drawStereoPair (OpenGl_FrameBuffer* theDrawFbo);
a521d90d 446
c357e426 447protected:
448
449 OpenGl_GraphicDriver* myDriver;
450 Handle(OpenGl_Window) myWindow;
451 Handle(OpenGl_Workspace) myWorkspace;
452 Handle(OpenGl_Caps) myCaps;
453 Standard_Boolean& myDeviceLostFlag;
454 Standard_Boolean myWasRedrawnGL;
455
c357e426 456 Standard_Boolean myCulling;
457 Graphic3d_TypeOfShadingModel myShadingModel;
c357e426 458 Graphic3d_TypeOfBackfacingModel myBackfacing;
b6472664 459 Quantity_ColorRGBA myBgColor;
3202bf1e 460 Handle(Graphic3d_SequenceOfHClipPlane) myClipPlanes;
c357e426 461 Handle(Graphic3d_Camera) myCamera;
7c3ef2f7 462 gp_XYZ myLocalOrigin;
b128c892 463 Handle(OpenGl_FrameBuffer) myFBO;
c357e426 464 Standard_Boolean myToShowGradTrihedron;
465 TCollection_AsciiString myBackgroundImagePath;
466 Handle(Graphic3d_TextureEnv) myTextureEnvData;
467 Graphic3d_GraduatedTrihedron myGTrihedronData;
468
016e5959 469 OpenGl_ListOfLight myNoShadingLight;
c357e426 470 OpenGl_ListOfLight myLights;
471 OpenGl_LayerList myZLayers; //!< main list of displayed structure, sorted by layers
472
473 Graphic3d_WorldViewProjState myWorldViewProjState; //!< camera modification state
474 OpenGl_StateCounter* myStateCounter;
475 Standard_Size myCurrLightSourceState;
392ac980 476
477 typedef std::pair<Standard_Size, Standard_Size> StateInfo;
478
479 StateInfo myLastOrientationState;
480 StateInfo myLastViewMappingState;
481 StateInfo myLastLightSourceState;
30f0ad28 482
b7cd4ba7 483 //! Is needed for selection of overlapping objects and storage of the current view volume
484 OpenGl_BVHTreeSelector myBVHSelector;
485
c357e426 486 OpenGl_GraduatedTrihedron myGraduatedTrihedron;
487
488 Handle(OpenGl_Texture) myTextureEnv;
489
3a9b5dc8 490 //! Framebuffers for OpenGL output.
491 Handle(OpenGl_FrameBuffer) myOpenGlFBO;
492 Handle(OpenGl_FrameBuffer) myOpenGlFBO2;
493
c357e426 494protected: //! @name Rendering properties
495
496 //! Two framebuffers (left and right views) store cached main presentation
497 //! of the view (without presentation of immediate layers).
3c4b62a4 498 GLint myFboColorFormat; //!< sized format for color attachments
499 GLint myFboDepthFormat; //!< sized format for depth-stencil attachments
c357e426 500 Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
501 Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2]; //!< Additional buffers for immediate layer in stereo mode.
502 OpenGl_VertexBuffer myFullScreenQuad; //!< Vertices for full-screen quad rendering.
503 OpenGl_VertexBuffer myFullScreenQuadFlip;
504 Standard_Boolean myToFlipOutput; //!< Flag to draw result image upside-down
505 unsigned int myFrameCounter; //!< redraw counter, for debugging
7ccf8676 506 Standard_Boolean myHasFboBlit; //!< disable FBOs on failure
507 Standard_Boolean myToDisableMSAA; //!< disable MSAA after failure
c357e426 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
511
0b0320e7 512protected: //! @name Background parameters
513
514 OpenGl_AspectFace* myTextureParams; //!< Stores texture and its parameters for textured background
515 OpenGl_BackgroundArray* myBgGradientArray; //!< Primitive array for gradient background
516 OpenGl_BackgroundArray* myBgTextureArray; //!< Primitive array for texture background
517
91c60b57 518protected: //! @name data types related to ray-tracing
519
520 //! Result of OpenGL shaders initialization.
521 enum RaytraceInitStatus
522 {
523 OpenGl_RT_NONE,
524 OpenGl_RT_INIT,
525 OpenGl_RT_FAIL
526 };
527
528 //! Describes update mode (state).
529 enum RaytraceUpdateMode
530 {
531 OpenGl_GUM_CHECK, //!< check geometry state
532 OpenGl_GUM_PREPARE, //!< collect unchanged objects
533 OpenGl_GUM_REBUILD //!< rebuild changed and new objects
534 };
535
536 //! Defines frequently used shader variables.
537 enum ShaderVariableIndex
538 {
539 OpenGl_RT_aPosition,
540
189f85a3 541 // camera position
91c60b57 542 OpenGl_RT_uOriginLT,
543 OpenGl_RT_uOriginLB,
544 OpenGl_RT_uOriginRT,
545 OpenGl_RT_uOriginRB,
546 OpenGl_RT_uDirectLT,
547 OpenGl_RT_uDirectLB,
548 OpenGl_RT_uDirectRT,
549 OpenGl_RT_uDirectRB,
3a9b5dc8 550 OpenGl_RT_uViewPrMat,
91c60b57 551 OpenGl_RT_uUnviewMat,
552
189f85a3 553 // 3D scene params
91c60b57 554 OpenGl_RT_uSceneRad,
555 OpenGl_RT_uSceneEps,
556 OpenGl_RT_uLightAmbnt,
557 OpenGl_RT_uLightCount,
558
189f85a3 559 // background params
560 OpenGl_RT_uBackColorTop,
561 OpenGl_RT_uBackColorBot,
91c60b57 562
189f85a3 563 // ray-tracing params
564 OpenGl_RT_uShadowsEnabled,
565 OpenGl_RT_uReflectEnabled,
566 OpenGl_RT_uSphereMapEnabled,
567 OpenGl_RT_uSphereMapForBack,
568 OpenGl_RT_uTexSamplersArray,
8c820969 569 OpenGl_RT_uBlockedRngEnabled,
189f85a3 570
3a9b5dc8 571 // size of render window
572 OpenGl_RT_uWinSizeX,
573 OpenGl_RT_uWinSizeY,
574
189f85a3 575 // sampled frame params
576 OpenGl_RT_uSampleWeight,
577 OpenGl_RT_uFrameRndSeed,
578
579 // adaptive FSAA params
91c60b57 580 OpenGl_RT_uOffsetX,
581 OpenGl_RT_uOffsetY,
582 OpenGl_RT_uSamples,
91c60b57 583
3a9b5dc8 584 // adaptive path tracing images
585 OpenGl_RT_uRenderImage,
586 OpenGl_RT_uOffsetImage,
587
91c60b57 588 OpenGl_RT_NbVariables // special field
589 };
590
3a9b5dc8 591 //! Defines OpenGL texture samplers.
91c60b57 592 enum ShaderSamplerNames
593 {
6e728f3b 594 OpenGl_RT_EnvironmentMapTexture = 0,
91c60b57 595
6e728f3b 596 OpenGl_RT_SceneNodeInfoTexture = 1,
597 OpenGl_RT_SceneMinPointTexture = 2,
598 OpenGl_RT_SceneMaxPointTexture = 3,
599 OpenGl_RT_SceneTransformTexture = 4,
91c60b57 600
6e728f3b 601 OpenGl_RT_GeometryVertexTexture = 5,
602 OpenGl_RT_GeometryNormalTexture = 6,
603 OpenGl_RT_GeometryTexCrdTexture = 7,
604 OpenGl_RT_GeometryTriangTexture = 8,
91c60b57 605
606 OpenGl_RT_RaytraceMaterialTexture = 9,
607 OpenGl_RT_RaytraceLightSrcTexture = 10,
608
189f85a3 609 OpenGl_RT_FsaaInputTexture = 11,
610 OpenGl_RT_PrevAccumTexture = 12,
91c60b57 611
3a9b5dc8 612 OpenGl_RT_RaytraceDepthTexture = 13
613 };
614
615 //! Defines OpenGL image samplers.
616 enum ShaderImageNames
617 {
618 OpenGl_RT_OutputImageLft = 0,
619 OpenGl_RT_OutputImageRgh = 1,
620 OpenGl_RT_VisualErrorImage = 2,
621 OpenGl_RT_TileOffsetsImage = 3
91c60b57 622 };
623
624 //! Tool class for management of shader sources.
625 class ShaderSource
626 {
627 public:
628
189f85a3 629 //! Default shader prefix - empty string.
630 static const TCollection_AsciiString EMPTY_PREFIX;
631
91c60b57 632 //! Creates new uninitialized shader source.
633 ShaderSource()
634 {
635 //
636 }
637
73722cc9 638 public:
189f85a3 639
73722cc9 640 //! Returns error description in case of load fail.
641 const TCollection_AsciiString& ErrorDescription() const
642 {
643 return myError;
91c60b57 644 }
645
91c60b57 646 //! Returns prefix to insert before the source.
647 const TCollection_AsciiString& Prefix() const
648 {
649 return myPrefix;
650 }
651
652 //! Sets prefix to insert before the source.
653 void SetPrefix (const TCollection_AsciiString& thePrefix)
654 {
655 myPrefix = thePrefix;
656 }
657
658 //! Returns shader source combined with prefix.
659 TCollection_AsciiString Source() const;
660
661 //! Loads shader source from specified files.
ee5befae 662 Standard_Boolean LoadFromFiles (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
663
664 //! Loads shader source from specified strings.
665 Standard_Boolean LoadFromStrings (const TCollection_AsciiString* theStrings, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
91c60b57 666
667 private:
668
669 TCollection_AsciiString mySource; //!< Source string of the shader object
670 TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
73722cc9 671 TCollection_AsciiString myError; //!< error state
91c60b57 672
673 };
674
675 //! Default ray-tracing depth.
676 static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
677
678 //! Default size of traversal stack.
f2474958 679 static const Standard_Integer THE_DEFAULT_STACK_SIZE = 10;
91c60b57 680
681 //! Compile-time ray-tracing parameters.
682 struct RaytracingParams
683 {
684 //! Actual size of traversal stack in shader program.
685 Standard_Integer StackSize;
686
687 //! Actual ray-tracing depth (number of ray bounces).
688 Standard_Integer NbBounces;
689
f483f2ed 690 //! Enables/disables light propagation through transparent media.
91c60b57 691 Standard_Boolean TransparentShadows;
692
189f85a3 693 //! Enables/disables global illumination (GI) effects.
694 Standard_Boolean GlobalIllumination;
695
f483f2ed 696 //! Enables/disables the use of OpenGL bindless textures.
697 Standard_Boolean UseBindlessTextures;
698
3a9b5dc8 699 //! Enables/disables adaptive screen sampling for path tracing.
700 Standard_Boolean AdaptiveScreenSampling;
701
91c60b57 702 //! Creates default compile-time ray-tracing parameters.
703 RaytracingParams()
704 : StackSize (THE_DEFAULT_STACK_SIZE),
705 NbBounces (THE_DEFAULT_NB_BOUNCES),
f483f2ed 706 TransparentShadows (Standard_False),
189f85a3 707 GlobalIllumination (Standard_False),
3a9b5dc8 708 UseBindlessTextures (Standard_False),
709 AdaptiveScreenSampling (Standard_False)
91c60b57 710 {
711 //
712 }
713 };
714
d4aaad5b 715 //! Describes state of OpenGL structure.
716 struct StructState
717 {
718 Standard_Size StructureState;
719 Standard_Size InstancedState;
720
721 //! Creates new structure state.
722 StructState (const Standard_Size theStructureState = 0,
723 const Standard_Size theInstancedState = 0)
724 : StructureState (theStructureState),
725 InstancedState (theInstancedState)
726 {
727 //
728 }
729
730 //! Creates new structure state.
731 StructState (const OpenGl_Structure* theStructure)
732 {
733 StructureState = theStructure->ModificationState();
734
735 InstancedState = theStructure->InstancedStructure() != NULL ?
736 theStructure->InstancedStructure()->ModificationState() : 0;
737 }
738 };
739
91c60b57 740protected: //! @name methods related to ray-tracing
741
742 //! Updates 3D scene geometry for ray-tracing.
743 Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
744 const Standard_Integer theViewId,
745 const Handle(OpenGl_Context)& theGlContext);
746
747 //! Updates 3D scene light sources for ray-tracing.
748 Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
749
91c60b57 750 //! Checks to see if the OpenGL structure is modified.
751 Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
752
753 //! Adds OpenGL structure to ray-traced scene geometry.
754 Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
755 const Handle(OpenGl_Context)& theGlContext);
756
757 //! Adds OpenGL groups to ray-traced scene geometry.
8c820969 758 Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
759 const OpenGl_RaytraceMaterial& theStructMat,
1f7f5a90 760 const Handle(Geom_Transformation)& theTrsf,
8c820969 761 const Handle(OpenGl_Context)& theGlContext);
91c60b57 762
763 //! Creates ray-tracing material properties.
764 OpenGl_RaytraceMaterial convertMaterial (const OpenGl_AspectFace* theAspect,
765 const Handle(OpenGl_Context)& theGlContext);
766
767 //! Adds OpenGL primitive array to ray-traced scene geometry.
768 OpenGl_TriangleSet* addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
769 const Standard_Integer theMatID,
770 const OpenGl_Mat4* theTrans);
771
772 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
773 Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
774 const Standard_Integer theMatID,
775 const Standard_Integer theCount,
776 const Standard_Integer theOffset,
777 const OpenGl_PrimitiveArray& theArray);
778
779 //! Adds OpenGL triangle array to ray-traced scene geometry.
780 Standard_Boolean addRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
781 const Standard_Integer theMatID,
782 const Standard_Integer theCount,
783 const Standard_Integer theOffset,
784 const Handle(Graphic3d_IndexBuffer)& theIndices);
785
786 //! Adds OpenGL triangle fan array to ray-traced scene geometry.
787 Standard_Boolean addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
788 const Standard_Integer theMatID,
789 const Standard_Integer theCount,
790 const Standard_Integer theOffset,
791 const Handle(Graphic3d_IndexBuffer)& theIndices);
792
793 //! Adds OpenGL triangle strip array to ray-traced scene geometry.
794 Standard_Boolean addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
795 const Standard_Integer theMatID,
796 const Standard_Integer theCount,
797 const Standard_Integer theOffset,
798 const Handle(Graphic3d_IndexBuffer)& theIndices);
799
800 //! Adds OpenGL quadrangle array to ray-traced scene geometry.
801 Standard_Boolean addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
802 const Standard_Integer theMatID,
803 const Standard_Integer theCount,
804 const Standard_Integer theOffset,
805 const Handle(Graphic3d_IndexBuffer)& theIndices);
806
807 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
808 Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
809 const Standard_Integer theMatID,
810 const Standard_Integer theCount,
811 const Standard_Integer theOffset,
812 const Handle(Graphic3d_IndexBuffer)& theIndices);
813
814 //! Adds OpenGL polygon array to ray-traced scene geometry.
815 Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
816 const Standard_Integer theMatID,
817 const Standard_Integer theCount,
818 const Standard_Integer theOffset,
819 const Handle(Graphic3d_IndexBuffer)& theIndices);
820
821 //! Uploads ray-trace data to the GPU.
822 Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
823
824 //! Generates shader prefix based on current ray-tracing options.
825 TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
826
827 //! Performs safe exit when shaders initialization fails.
828 Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
829 const Handle(OpenGl_Context)& theGlContext);
830
831 //! Loads and compiles shader object from specified source.
832 Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
833 const ShaderSource& theSource,
834 const Handle(OpenGl_Context)& theGlContext);
835
189f85a3 836 //! Creates shader program from the given vertex and fragment shaders.
837 Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
838 const Handle(OpenGl_ShaderObject)& theVertShader,
839 const Handle(OpenGl_ShaderObject)& theFragShader);
840
91c60b57 841 //! Initializes OpenGL/GLSL shader programs.
c357e426 842 Standard_Boolean initRaytraceResources (const Handle(OpenGl_Context)& theGlContext);
91c60b57 843
844 //! Releases OpenGL/GLSL shader programs.
d877e610 845 void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext,
846 const Standard_Boolean theToRebuild = Standard_False);
91c60b57 847
bf02aa7d 848 //! Updates auxiliary OpenGL frame buffers.
849 Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
91c60b57 850 const Standard_Integer theSizeY,
851 const Handle(OpenGl_Context)& theGlContext);
852
853 //! Generates viewing rays for corners of screen quad.
854 void updateCamera (const OpenGl_Mat4& theOrientation,
855 const OpenGl_Mat4& theViewMapping,
856 OpenGl_Vec3* theOrigins,
857 OpenGl_Vec3* theDirects,
1d865689 858 OpenGl_Mat4& theView,
91c60b57 859 OpenGl_Mat4& theUnView);
860
861 //! Binds ray-trace textures to corresponding texture units.
862 void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
863
864 //! Unbinds ray-trace textures from corresponding texture unit.
865 void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
866
867 //! Sets uniform state for the given ray-tracing shader program.
3a9b5dc8 868 Standard_Boolean setUniformState (const Standard_Integer theProgramId,
869 const Standard_Integer theSizeX,
870 const Standard_Integer theSizeY,
91c60b57 871 const Handle(OpenGl_Context)& theGlContext);
872
873 //! Runs ray-tracing shader programs.
c357e426 874 Standard_Boolean runRaytraceShaders (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
3a9b5dc8 880 //! Runs classical (Whitted-style) ray-tracing kernel.
881 Standard_Boolean runRaytrace (const Standard_Integer theSizeX,
882 const Standard_Integer theSizeY,
883 Graphic3d_Camera::Projection theProjection,
884 OpenGl_FrameBuffer* theReadDrawFbo,
885 const Handle(OpenGl_Context)& theGlContext);
886
887 //! Runs path tracing (global illumination) kernel.
888 Standard_Boolean runPathtrace (const Graphic3d_Camera::Projection theProjection,
889 OpenGl_FrameBuffer* theReadDrawFbo,
890 const Handle(OpenGl_Context)& theGlContext);
891
892 //! Redraws the window using OpenGL/GLSL ray-tracing or path tracing.
c357e426 893 Standard_Boolean raytrace (const Standard_Integer theSizeX,
91c60b57 894 const Standard_Integer theSizeY,
bf02aa7d 895 Graphic3d_Camera::Projection theProjection,
38a0206f 896 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 897 const Handle(OpenGl_Context)& theGlContext);
898
899protected: //! @name fields related to ray-tracing
900
3a9b5dc8 901 //! Result of RT/PT shaders initialization.
91c60b57 902 RaytraceInitStatus myRaytraceInitStatus;
903
3a9b5dc8 904 //! Is ray-tracing geometry data valid?
91c60b57 905 Standard_Boolean myIsRaytraceDataValid;
906
3a9b5dc8 907 //! True if warning about missing extension GL_ARB_bindless_texture has been displayed.
91c60b57 908 Standard_Boolean myIsRaytraceWarnTextures;
909
910 //! 3D scene geometry data for ray-tracing.
911 OpenGl_RaytraceGeometry myRaytraceGeometry;
912
913 //! Compile-time ray-tracing parameters.
914 RaytracingParams myRaytraceParameters;
915
916 //! Radius of bounding sphere of the scene.
917 Standard_ShortReal myRaytraceSceneRadius;
918 //! Scene epsilon to prevent self-intersections.
919 Standard_ShortReal myRaytraceSceneEpsilon;
920
921 //! OpenGL/GLSL source of ray-tracing fragment shader.
922 ShaderSource myRaytraceShaderSource;
923 //! OpenGL/GLSL source of adaptive-AA fragment shader.
924 ShaderSource myPostFSAAShaderSource;
3a9b5dc8 925 //! OpenGL/GLSL source of RT/PT display fragment shader.
926 ShaderSource myOutImageShaderSource;
91c60b57 927
928 //! OpenGL/GLSL ray-tracing fragment shader.
929 Handle(OpenGl_ShaderObject) myRaytraceShader;
930 //! OpenGL/GLSL adaptive-AA fragment shader.
931 Handle(OpenGl_ShaderObject) myPostFSAAShader;
3a9b5dc8 932 //! OpenGL/GLSL ray-tracing display fragment shader.
933 Handle(OpenGl_ShaderObject) myOutImageShader;
91c60b57 934
935 //! OpenGL/GLSL ray-tracing shader program.
936 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
937 //! OpenGL/GLSL adaptive-AA shader program.
938 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
189f85a3 939 //! OpenGL/GLSL program for displaying texture.
940 Handle(OpenGl_ShaderProgram) myOutImageProgram;
91c60b57 941
942 //! Texture buffer of data records of bottom-level BVH nodes.
943 Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
944 //! Texture buffer of minimum points of bottom-level BVH nodes.
945 Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
946 //! Texture buffer of maximum points of bottom-level BVH nodes.
947 Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;
948 //! Texture buffer of transformations of high-level BVH nodes.
949 Handle(OpenGl_TextureBufferArb) mySceneTransformTexture;
950
951 //! Texture buffer of vertex coords.
952 Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture;
953 //! Texture buffer of vertex normals.
954 Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture;
955 //! Texture buffer of vertex UV coords.
956 Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture;
957 //! Texture buffer of triangle indices.
958 Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture;
959
960 //! Texture buffer of material properties.
961 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
962 //! Texture buffer of light source properties.
963 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
964
965 //! 1st framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 966 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 967 Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
91c60b57 968 //! 2nd framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 969 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 970 Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
3a9b5dc8 971
972 //! Output textures (2 textures are used in stereo mode).
973 //! Used if adaptive screen sampling is activated.
974 Handle(OpenGl_Texture) myRaytraceOutputTexture[2];
975
976 //! Texture containing per-tile visual error estimation.
977 //! Used if adaptive screen sampling is activated.
978 Handle(OpenGl_Texture) myRaytraceVisualErrorTexture;
979 //! Texture containing offsets of sampled screen tiles.
980 //! Used if adaptive screen sampling is activated.
981 Handle(OpenGl_Texture) myRaytraceTileOffsetsTexture;
91c60b57 982
983 //! Vertex buffer (VBO) for drawing dummy quad.
984 OpenGl_VertexBuffer myRaytraceScreenQuad;
985
986 //! Cached locations of frequently used uniform variables.
987 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
988
989 //! State of OpenGL structures reflected to ray-tracing.
d4aaad5b 990 std::map<const OpenGl_Structure*, StructState> myStructureStates;
91c60b57 991
992 //! PrimitiveArray to TriangleSet map for scene partial update.
993 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
994
189f85a3 995 //! Set of IDs of non-raytracable elements (to detect updates).
996 std::set<Standard_Integer> myNonRaytraceStructureIDs;
997
998 //! Render filter to filter out all raytracable structures.
91c60b57 999 Handle(OpenGl_RaytraceFilter) myRaytraceFilter;
1000
1001 //! Marks if environment map should be updated.
1002 Standard_Boolean myToUpdateEnvironmentMap;
1003
1004 //! State of OpenGL layer list.
bd6a8454 1005 Standard_Size myRaytraceLayerListState;
189f85a3 1006
1007 //! Number of accumulated frames (for progressive rendering).
1008 Standard_Integer myAccumFrames;
1009
1010 //! Stored ray origins used for detection of camera movements.
1011 OpenGl_Vec3 myPreviousOrigins[3];
1012
1013 //! Bullard RNG to produce random sequence.
1014 math_BullardGenerator myRNG;
91c60b57 1015
3a9b5dc8 1016 //! Tool object for sampling screen tiles in PT mode.
1017 OpenGl_TileSampler myTileSampler;
1018
679ecdee 1019public:
1020
1c35b92f 1021 DEFINE_STANDARD_ALLOC
92efcf78 1022 DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
679ecdee 1023
c357e426 1024 friend class OpenGl_GraphicDriver;
a89742cf 1025 friend class OpenGl_Workspace;
2166f0fa
SK
1026};
1027
679ecdee 1028#endif // _OpenGl_View_Header