0030483: Visualization, Path Tracing - make Tile Size configurable
[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
25e59720 19#include <Standard_Transient.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>
2166f0fa 29
2166f0fa 30#include <Graphic3d_CView.hxx>
a79f67f8 31#include <Graphic3d_GraduatedTrihedron.hxx>
51b10cd4 32#include <Graphic3d_SequenceOfHClipPlane.hxx>
eb85ed36 33#include <Graphic3d_ToneMappingMethod.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>
15669413 43#include <OpenGl_FrameStatsPrs.hxx>
c357e426 44#include <OpenGl_GraduatedTrihedron.hxx>
59f45b7c 45#include <OpenGl_LayerList.hxx>
73192b37 46#include <OpenGl_LineAttributes.hxx>
c357e426 47#include <OpenGl_SceneGeometry.hxx>
48#include <OpenGl_Structure.hxx>
c357e426 49#include <OpenGl_Window.hxx>
50#include <OpenGl_Workspace.hxx>
3a9b5dc8 51#include <OpenGl_TileSampler.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,
c357e426 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.
38d90bb3 146 //! In Ray-Tracing allow to get a raw HDR buffer using Graphic3d_BT_RGB_RayTraceHdrLeft buffer type,
147 //! only Left view will be dumped ignoring stereoscopic parameter.
c357e426 148 Standard_EXPORT virtual Standard_Boolean BufferDump (Image_PixMap& theImage,
149 const Graphic3d_BufferType& theBufferType) Standard_OVERRIDE;
150
c357e426 151 //! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
8f138407 152 Standard_EXPORT virtual void InvalidateBVHData (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
c357e426 153
154 //! Insert a new top-level z layer with the given ID.
155 Standard_EXPORT virtual void AddZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
156
157 //! Remove a z layer with the given ID.
158 Standard_EXPORT virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
2166f0fa 159
c357e426 160 //! Sets the settings for a single Z layer of specified view.
161 Standard_EXPORT virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
162 const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
b5ac8292 163
50d06d8f 164 //! Returns the maximum Z layer ID.
165 //! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
166 Standard_EXPORT virtual Standard_Integer ZLayerMax() const Standard_OVERRIDE;
167
168 //! Returns the bounding box of all structures displayed in the Z layer.
169 //! Never fails. If Z layer does not exist nothing happens.
170 Standard_EXPORT virtual void InvalidateZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId) const Standard_OVERRIDE;
171
172 //! Returns the bounding box of all structures displayed in the Z layer.
3fe9ce0e 173 //! If Z layer does not exist the empty box is returned.
174 //! @param theLayerId layer identifier
175 //! @param theCamera camera definition
176 //! @param theWindowWidth viewport width (for applying transformation-persistence)
177 //! @param theWindowHeight viewport height (for applying transformation-persistence)
178 //! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
179 //! @return computed bounding box
7c3ef2f7 180 Standard_EXPORT virtual Bnd_Box ZLayerBoundingBox (const Graphic3d_ZLayerId theLayerId,
181 const Handle(Graphic3d_Camera)& theCamera,
182 const Standard_Integer theWindowWidth,
183 const Standard_Integer theWindowHeight,
184 const Standard_Boolean theToIncludeAuxiliary) const Standard_OVERRIDE;
50d06d8f 185
c357e426 186 //! Returns pointer to an assigned framebuffer object.
b128c892 187 Standard_EXPORT virtual Handle(Standard_Transient) FBO() const Standard_OVERRIDE;
2166f0fa 188
c357e426 189 //! Sets framebuffer object for offscreen rendering.
b128c892 190 Standard_EXPORT virtual void SetFBO (const Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 191
c357e426 192 //! Generate offscreen FBO in the graphic library.
193 //! If not supported on hardware returns NULL.
b128c892 194 Standard_EXPORT virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
195 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 196
c357e426 197 //! Remove offscreen FBO from the graphic library
b128c892 198 Standard_EXPORT virtual void FBORelease (Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
2166f0fa 199
c357e426 200 //! Read offscreen FBO configuration.
b128c892 201 Standard_EXPORT virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
c357e426 202 Standard_Integer& theWidth,
203 Standard_Integer& theHeight,
204 Standard_Integer& theWidthMax,
205 Standard_Integer& theHeightMax) Standard_OVERRIDE;
206
207 //! Change offscreen FBO viewport.
b128c892 208 Standard_EXPORT virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
c357e426 209 const Standard_Integer theWidth,
210 const Standard_Integer theHeight) Standard_OVERRIDE;
2166f0fa 211
c357e426 212public:
2166f0fa 213
c357e426 214 //! Returns background fill color.
215 Standard_EXPORT virtual Aspect_Background Background() const Standard_OVERRIDE;
59f45b7c 216
c357e426 217 //! Sets background fill color.
218 Standard_EXPORT virtual void SetBackground (const Aspect_Background& theBackground) Standard_OVERRIDE;
59f45b7c 219
c357e426 220 //! Returns gradient background fill colors.
221 Standard_EXPORT virtual Aspect_GradientBackground GradientBackground() const Standard_OVERRIDE;
2166f0fa 222
c357e426 223 //! Sets gradient background fill colors.
224 Standard_EXPORT virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) Standard_OVERRIDE;
225
226 //! Returns background image texture file path.
0f57ab75 227 virtual TCollection_AsciiString BackgroundImage() Standard_OVERRIDE { return myBackgroundImagePath; }
c357e426 228
229 //! Sets background image texture file path.
230 Standard_EXPORT virtual void SetBackgroundImage (const TCollection_AsciiString& theFilePath) Standard_OVERRIDE;
231
232 //! Returns background image fill style.
233 Standard_EXPORT virtual Aspect_FillMethod BackgroundImageStyle() const Standard_OVERRIDE;
234
235 //! Sets background image fill style.
236 Standard_EXPORT virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) Standard_OVERRIDE;
237
238 //! Returns environment texture set for the view.
0f57ab75 239 virtual Handle(Graphic3d_TextureEnv) TextureEnv() const Standard_OVERRIDE { return myTextureEnvData; }
c357e426 240
241 //! Sets environment texture for the view.
242 Standard_EXPORT virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) Standard_OVERRIDE;
243
c357e426 244 //! Return backfacing model used for the view.
245 virtual Graphic3d_TypeOfBackfacingModel BackfacingModel() const Standard_OVERRIDE { return myBackfacing; }
246
247 //! Sets backfacing model for the view.
248 virtual void SetBackfacingModel (const Graphic3d_TypeOfBackfacingModel theModel) Standard_OVERRIDE { myBackfacing = theModel; }
249
250 //! Returns camera object of the view.
251 virtual const Handle(Graphic3d_Camera)& Camera() const Standard_OVERRIDE { return myCamera; }
252
7c3ef2f7 253 //! Returns local camera origin currently set for rendering, might be modified during rendering.
254 const gp_XYZ& LocalOrigin() const { return myLocalOrigin; }
255
256 //! Setup local camera origin currently set for rendering.
257 Standard_EXPORT void SetLocalOrigin (const gp_XYZ& theOrigin);
258
c357e426 259 //! Sets camera used by the view.
7c3ef2f7 260 Standard_EXPORT virtual void SetCamera (const Handle(Graphic3d_Camera)& theCamera) Standard_OVERRIDE;
c357e426 261
c357e426 262 //! Returns list of lights of the view.
992ed6b3 263 virtual const Handle(Graphic3d_LightSet)& Lights() const Standard_OVERRIDE { return myLights; }
c357e426 264
265 //! Sets list of lights for the view.
992ed6b3 266 virtual void SetLights (const Handle(Graphic3d_LightSet)& theLights) Standard_OVERRIDE
c357e426 267 {
268 myLights = theLights;
269 myCurrLightSourceState = myStateCounter->Increment();
270 }
271
272 //! Returns list of clip planes set for the view.
3202bf1e 273 virtual const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const Standard_OVERRIDE { return myClipPlanes; }
c357e426 274
275 //! Sets list of clip planes for the view.
3202bf1e 276 virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes) Standard_OVERRIDE { myClipPlanes = thePlanes; }
c357e426 277
26d9c835 278 //! Fill in the dictionary with diagnostic info.
279 //! Should be called within rendering thread.
280 //!
281 //! This API should be used only for user output or for creating automated reports.
282 //! The format of returned information (e.g. key-value layout)
283 //! is NOT part of this API and can be changed at any time.
284 //! Thus application should not parse returned information to weed out specific parameters.
285 Standard_EXPORT virtual void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
286 Graphic3d_DiagnosticInfo theFlags) const Standard_OVERRIDE;
287
79b544e6 288 //! Returns string with statistic performance info.
289 Standard_EXPORT virtual TCollection_AsciiString StatisticInformation() const Standard_OVERRIDE;
290
291 //! Fills in the dictionary with statistic performance info.
292 Standard_EXPORT virtual void StatisticInformation (TColStd_IndexedDataMapOfStringString& theDict) const Standard_OVERRIDE;
293
c357e426 294public:
295
296 //! Returns background color.
b6472664 297 const Quantity_ColorRGBA& BackgroundColor() const { return myBgColor; }
c357e426 298
c357e426 299 //! Change graduated trihedron.
300 OpenGl_GraduatedTrihedron& ChangeGraduatedTrihedron() { return myGraduatedTrihedron; }
301
302 void SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
303 const Handle(Graphic3d_TextureEnv)& theTexture);
304
2166f0fa 305 void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
c357e426 306
2166f0fa 307 void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
2166f0fa 308
c357e426 309 void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);
2166f0fa 310
e276548b 311 //! Returns list of OpenGL Z-layers.
312 const OpenGl_LayerList& LayerList() const { return myZLayers; }
313
c357e426 314 //! Returns OpenGL window implementation.
5e30547b 315 const Handle(OpenGl_Window)& GlWindow() const { return myWindow; }
e276548b 316
c357e426 317 //! Returns OpenGL environment map.
cc8cbabe 318 const Handle(OpenGl_TextureSet)& GlTextureEnv() const { return myTextureEnv; }
e276548b 319
b7cd4ba7 320 //! Returns selector for BVH tree, providing a possibility to store information
321 //! about current view volume and to detect which objects are overlapping it.
2b8832bb 322 const OpenGl_BVHTreeSelector& BVHTreeSelector() const { return myBVHSelector; }
b7cd4ba7 323
a1954302 324 //! Returns true if there are immediate structures to display
325 bool HasImmediateStructures() const
326 {
c3282ec1 327 return myZLayers.NbImmediateStructures() != 0;
a1954302 328 }
329
c357e426 330protected: //! @name Internal methods for managing GL resources
331
332 //! Initializes OpenGl resource for environment texture.
333 void initTextureEnv (const Handle(OpenGl_Context)& theContext);
334
a521d90d 335protected: //! @name low-level redrawing sub-routines
c357e426 336
337 //! Redraws view for the given monographic camera projection, or left/right eye.
a521d90d 338 Standard_EXPORT virtual void redraw (const Graphic3d_Camera::Projection theProjection,
a1073ae2 339 OpenGl_FrameBuffer* theReadDrawFbo,
340 OpenGl_FrameBuffer* theOitAccumFbo);
2166f0fa 341
c357e426 342 //! Redraws view for the given monographic camera projection, or left/right eye.
343 //!
344 //! Method will blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
345 //! into presentation buffer (myMainSceneFbos -> offscreen FBO or
346 //! myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
347 //! and redraw immediate structures on top.
348 //!
349 //! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
350 //! the first step (blitting) will be skipped.
351 //!
352 //! @return false if immediate structures has been rendered directly into FrontBuffer
353 //! and Buffer Swap should not be called.
a521d90d 354 Standard_EXPORT virtual bool redrawImmediate (const Graphic3d_Camera::Projection theProjection,
355 OpenGl_FrameBuffer* theReadFbo,
356 OpenGl_FrameBuffer* theDrawFbo,
a1073ae2 357 OpenGl_FrameBuffer* theOitAccumFbo,
a521d90d 358 const Standard_Boolean theIsPartialUpdate = Standard_False);
b5ac8292 359
c357e426 360 //! Blit image from/to specified buffers.
a521d90d 361 Standard_EXPORT bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
362 OpenGl_FrameBuffer* theDrawFbo,
363 const Standard_Boolean theToFlip = Standard_False);
2166f0fa 364
c357e426 365 //! Setup default FBO.
a521d90d 366 Standard_EXPORT void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
2166f0fa 367
c357e426 368protected: //! @name Rendering of GL graphics (with prepared drawing buffer).
2166f0fa 369
c357e426 370 //! Renders the graphical contents of the view into the preprepared window or framebuffer.
371 //! @param theProjection [in] the projection that should be used for rendering.
372 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
a1073ae2 373 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
c357e426 374 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
a521d90d 375 Standard_EXPORT virtual void render (Graphic3d_Camera::Projection theProjection,
376 OpenGl_FrameBuffer* theReadDrawFbo,
a1073ae2 377 OpenGl_FrameBuffer* theOitAccumFbo,
a521d90d 378 const Standard_Boolean theToDrawImmediate);
2166f0fa 379
c357e426 380 //! Renders the graphical scene.
bf02aa7d 381 //! @param theProjection [in] the projection that is used for rendering.
c357e426 382 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
a1073ae2 383 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
c357e426 384 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 385 Standard_EXPORT virtual void renderScene (Graphic3d_Camera::Projection theProjection,
386 OpenGl_FrameBuffer* theReadDrawFbo,
a1073ae2 387 OpenGl_FrameBuffer* theOitAccumFbo,
a521d90d 388 const Standard_Boolean theToDrawImmediate);
389
390 //! Draw background (gradient / image)
391 Standard_EXPORT virtual void drawBackground (const Handle(OpenGl_Workspace)& theWorkspace);
2166f0fa 392
c357e426 393 //! Render set of structures presented in the view.
bf02aa7d 394 //! @param theProjection [in] the projection that is used for rendering.
c357e426 395 //! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
a1073ae2 396 //! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
c357e426 397 //! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
bf02aa7d 398 Standard_EXPORT virtual void renderStructs (Graphic3d_Camera::Projection theProjection,
399 OpenGl_FrameBuffer* theReadDrawFbo,
a1073ae2 400 OpenGl_FrameBuffer* theOitAccumFbo,
a521d90d 401 const Standard_Boolean theToDrawImmediate);
2166f0fa 402
c357e426 403 //! Renders trihedron.
404 void renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace);
2166f0fa 405
15669413 406 //! Renders frame statistics.
407 void renderFrameStats();
408
c357e426 409private:
392ac980 410
c357e426 411 //! Adds the structure to display lists of the view.
412 Standard_EXPORT virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
413 const Standard_Integer thePriority) Standard_OVERRIDE;
414
415 //! Erases the structure from display lists of the view.
416 Standard_EXPORT virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) Standard_OVERRIDE;
417
418 //! Change Z layer of a structure already presented in view.
419 Standard_EXPORT virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
420 const Graphic3d_ZLayerId theNewLayerId) Standard_OVERRIDE;
421
422 //! Changes the priority of a structure within its Z layer in the specified view.
423 Standard_EXPORT virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
424 const Standard_Integer theNewPriority) Standard_OVERRIDE;
425
50d06d8f 426 //! Returns zoom-scale factor.
427 Standard_EXPORT virtual Standard_Real considerZoomPersistenceObjects (const Graphic3d_ZLayerId theLayerId,
428 const Handle(Graphic3d_Camera)& theCamera,
429 const Standard_Integer theWindowWidth,
3fe9ce0e 430 const Standard_Integer theWindowHeight) const Standard_OVERRIDE;
50d06d8f 431
a521d90d 432private:
433
434 //! Copy content of Back buffer to the Front buffer.
a0b49de4 435 bool copyBackToFront();
a521d90d 436
437 //! Initialize blit quad.
438 OpenGl_VertexBuffer* initBlitQuad (const Standard_Boolean theToFlip);
439
440 //! Blend together views pair into stereo image.
3c4b62a4 441 void drawStereoPair (OpenGl_FrameBuffer* theDrawFbo);
a521d90d 442
a1073ae2 443 //! Check and update OIT compatibility with current OpenGL context's state.
444 bool checkOitCompatibility (const Handle(OpenGl_Context)& theGlContext,
445 const Standard_Boolean theMSAA);
446
447 //! Chooses compatible internal color format for OIT frame buffer.
448 bool chooseOitColorConfiguration (const Handle(OpenGl_Context)& theGlContext,
449 const Standard_Integer theConfigIndex,
450 OpenGl_ColorFormats& theFormats);
451
c357e426 452protected:
453
454 OpenGl_GraphicDriver* myDriver;
455 Handle(OpenGl_Window) myWindow;
456 Handle(OpenGl_Workspace) myWorkspace;
457 Handle(OpenGl_Caps) myCaps;
c357e426 458 Standard_Boolean myWasRedrawnGL;
459
c357e426 460 Graphic3d_TypeOfBackfacingModel myBackfacing;
b6472664 461 Quantity_ColorRGBA myBgColor;
3202bf1e 462 Handle(Graphic3d_SequenceOfHClipPlane) myClipPlanes;
c357e426 463 Handle(Graphic3d_Camera) myCamera;
7c3ef2f7 464 gp_XYZ myLocalOrigin;
b128c892 465 Handle(OpenGl_FrameBuffer) myFBO;
c357e426 466 Standard_Boolean myToShowGradTrihedron;
467 TCollection_AsciiString myBackgroundImagePath;
468 Handle(Graphic3d_TextureEnv) myTextureEnvData;
469 Graphic3d_GraduatedTrihedron myGTrihedronData;
470
992ed6b3 471 Handle(Graphic3d_LightSet) myNoShadingLight;
472 Handle(Graphic3d_LightSet) myLights;
c357e426 473 OpenGl_LayerList myZLayers; //!< main list of displayed structure, sorted by layers
474
475 Graphic3d_WorldViewProjState myWorldViewProjState; //!< camera modification state
476 OpenGl_StateCounter* myStateCounter;
477 Standard_Size myCurrLightSourceState;
992ed6b3 478 Standard_Size myLightsRevision;
392ac980 479
480 typedef std::pair<Standard_Size, Standard_Size> StateInfo;
481
482 StateInfo myLastOrientationState;
483 StateInfo myLastViewMappingState;
484 StateInfo myLastLightSourceState;
30f0ad28 485
b7cd4ba7 486 //! Is needed for selection of overlapping objects and storage of the current view volume
487 OpenGl_BVHTreeSelector myBVHSelector;
488
c357e426 489 OpenGl_GraduatedTrihedron myGraduatedTrihedron;
15669413 490 OpenGl_FrameStatsPrs myFrameStatsPrs;
c357e426 491
cc8cbabe 492 Handle(OpenGl_TextureSet) myTextureEnv;
c357e426 493
3a9b5dc8 494 //! Framebuffers for OpenGL output.
495 Handle(OpenGl_FrameBuffer) myOpenGlFBO;
496 Handle(OpenGl_FrameBuffer) myOpenGlFBO2;
497
c357e426 498protected: //! @name Rendering properties
499
500 //! Two framebuffers (left and right views) store cached main presentation
501 //! of the view (without presentation of immediate layers).
3c4b62a4 502 GLint myFboColorFormat; //!< sized format for color attachments
503 GLint myFboDepthFormat; //!< sized format for depth-stencil attachments
a1073ae2 504 OpenGl_ColorFormats myFboOitColorConfig; //!< selected color format configuration for OIT color attachments
c357e426 505 Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
a1073ae2 506 Handle(OpenGl_FrameBuffer) myMainSceneFbosOit[2]; //!< Additional buffers for transparent draw of main layer.
507 Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2]; //!< Additional buffers for immediate layer in stereo mode.
508 Handle(OpenGl_FrameBuffer) myImmediateSceneFbosOit[2]; //!< Additional buffers for transparency draw of immediate layer.
c357e426 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
a1073ae2 514 Standard_Boolean myToDisableOIT; //!< disable OIT on failure
515 Standard_Boolean myToDisableOITMSAA; //!< disable OIT with MSAA on failure
7ccf8676 516 Standard_Boolean myToDisableMSAA; //!< disable MSAA after failure
c357e426 517 Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer)
518 Standard_Boolean myBackBufferRestored;
519 Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data
520
0b0320e7 521protected: //! @name Background parameters
522
523 OpenGl_AspectFace* myTextureParams; //!< Stores texture and its parameters for textured background
524 OpenGl_BackgroundArray* myBgGradientArray; //!< Primitive array for gradient background
525 OpenGl_BackgroundArray* myBgTextureArray; //!< Primitive array for texture background
526
91c60b57 527protected: //! @name data types related to ray-tracing
528
529 //! Result of OpenGL shaders initialization.
530 enum RaytraceInitStatus
531 {
532 OpenGl_RT_NONE,
533 OpenGl_RT_INIT,
534 OpenGl_RT_FAIL
535 };
536
537 //! Describes update mode (state).
538 enum RaytraceUpdateMode
539 {
540 OpenGl_GUM_CHECK, //!< check geometry state
541 OpenGl_GUM_PREPARE, //!< collect unchanged objects
542 OpenGl_GUM_REBUILD //!< rebuild changed and new objects
543 };
544
545 //! Defines frequently used shader variables.
546 enum ShaderVariableIndex
547 {
548 OpenGl_RT_aPosition,
549
189f85a3 550 // camera position
91c60b57 551 OpenGl_RT_uOriginLT,
552 OpenGl_RT_uOriginLB,
553 OpenGl_RT_uOriginRT,
554 OpenGl_RT_uOriginRB,
555 OpenGl_RT_uDirectLT,
556 OpenGl_RT_uDirectLB,
557 OpenGl_RT_uDirectRT,
558 OpenGl_RT_uDirectRB,
3a9b5dc8 559 OpenGl_RT_uViewPrMat,
91c60b57 560 OpenGl_RT_uUnviewMat,
561
189f85a3 562 // 3D scene params
91c60b57 563 OpenGl_RT_uSceneRad,
564 OpenGl_RT_uSceneEps,
565 OpenGl_RT_uLightAmbnt,
566 OpenGl_RT_uLightCount,
567
189f85a3 568 // background params
569 OpenGl_RT_uBackColorTop,
570 OpenGl_RT_uBackColorBot,
91c60b57 571
189f85a3 572 // ray-tracing params
573 OpenGl_RT_uShadowsEnabled,
574 OpenGl_RT_uReflectEnabled,
575 OpenGl_RT_uSphereMapEnabled,
576 OpenGl_RT_uSphereMapForBack,
577 OpenGl_RT_uTexSamplersArray,
8c820969 578 OpenGl_RT_uBlockedRngEnabled,
189f85a3 579
3a9b5dc8 580 // size of render window
581 OpenGl_RT_uWinSizeX,
582 OpenGl_RT_uWinSizeY,
583
189f85a3 584 // sampled frame params
383c6c9f 585 OpenGl_RT_uAccumSamples,
189f85a3 586 OpenGl_RT_uFrameRndSeed,
587
588 // adaptive FSAA params
91c60b57 589 OpenGl_RT_uOffsetX,
590 OpenGl_RT_uOffsetY,
591 OpenGl_RT_uSamples,
91c60b57 592
b09447ed 593 // images used by ISS mode
3a9b5dc8 594 OpenGl_RT_uRenderImage,
595 OpenGl_RT_uOffsetImage,
66d1cdc6 596 OpenGl_RT_uTileSize,
597 OpenGl_RT_uVarianceScaleFactor,
3a9b5dc8 598
b09447ed 599 // maximum radiance value
600 OpenGl_RT_uMaxRadiance,
601
91c60b57 602 OpenGl_RT_NbVariables // special field
603 };
604
3a9b5dc8 605 //! Defines OpenGL image samplers.
606 enum ShaderImageNames
607 {
66d1cdc6 608 OpenGl_RT_OutputImage = 0,
609 OpenGl_RT_VisualErrorImage = 1,
610 OpenGl_RT_TileOffsetsImage = 2,
91c60b57 611 };
612
613 //! Tool class for management of shader sources.
614 class ShaderSource
615 {
616 public:
617
189f85a3 618 //! Default shader prefix - empty string.
619 static const TCollection_AsciiString EMPTY_PREFIX;
620
91c60b57 621 //! Creates new uninitialized shader source.
622 ShaderSource()
623 {
624 //
625 }
626
73722cc9 627 public:
189f85a3 628
73722cc9 629 //! Returns error description in case of load fail.
630 const TCollection_AsciiString& ErrorDescription() const
631 {
632 return myError;
91c60b57 633 }
634
91c60b57 635 //! Returns prefix to insert before the source.
636 const TCollection_AsciiString& Prefix() const
637 {
638 return myPrefix;
639 }
640
641 //! Sets prefix to insert before the source.
642 void SetPrefix (const TCollection_AsciiString& thePrefix)
643 {
644 myPrefix = thePrefix;
645 }
646
647 //! Returns shader source combined with prefix.
648 TCollection_AsciiString Source() const;
649
650 //! Loads shader source from specified files.
ee5befae 651 Standard_Boolean LoadFromFiles (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
652
653 //! Loads shader source from specified strings.
654 Standard_Boolean LoadFromStrings (const TCollection_AsciiString* theStrings, 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
b4327ba8 688 //! Enables/disables two-sided BSDF models instead of one-sided.
689 Standard_Boolean TwoSidedBsdfModels;
690
3a9b5dc8 691 //! Enables/disables adaptive screen sampling for path tracing.
692 Standard_Boolean AdaptiveScreenSampling;
693
b09447ed 694 //! Enables/disables environment map for background.
695 Standard_Boolean UseEnvMapForBackground;
696
697 //! Maximum radiance value used for clamping radiance estimation.
698 Standard_ShortReal RadianceClampingValue;
eb85ed36 699
b27ab03d 700 //! Enables/disables depth-of-field effect (path tracing, perspective camera).
701 Standard_Boolean DepthOfField;
702
eb85ed36 703 //! Tone mapping method for path tracing.
704 Graphic3d_ToneMappingMethod ToneMappingMethod;
4eaaf9d8 705
91c60b57 706 //! Creates default compile-time ray-tracing parameters.
707 RaytracingParams()
b09447ed 708 : StackSize (THE_DEFAULT_STACK_SIZE),
709 NbBounces (THE_DEFAULT_NB_BOUNCES),
b4327ba8 710 TransparentShadows (Standard_False),
711 GlobalIllumination (Standard_False),
712 UseBindlessTextures (Standard_False),
713 TwoSidedBsdfModels (Standard_False),
b09447ed 714 AdaptiveScreenSampling (Standard_False),
715 UseEnvMapForBackground (Standard_False),
4eaaf9d8 716 RadianceClampingValue (30.0),
b27ab03d 717 DepthOfField (Standard_False),
eb85ed36 718 ToneMappingMethod (Graphic3d_ToneMappingMethod_Disabled) { }
91c60b57 719 };
720
d4aaad5b 721 //! Describes state of OpenGL structure.
722 struct StructState
723 {
724 Standard_Size StructureState;
725 Standard_Size InstancedState;
726
727 //! Creates new structure state.
728 StructState (const Standard_Size theStructureState = 0,
729 const Standard_Size theInstancedState = 0)
730 : StructureState (theStructureState),
731 InstancedState (theInstancedState)
732 {
733 //
734 }
735
736 //! Creates new structure state.
737 StructState (const OpenGl_Structure* theStructure)
738 {
739 StructureState = theStructure->ModificationState();
740
741 InstancedState = theStructure->InstancedStructure() != NULL ?
742 theStructure->InstancedStructure()->ModificationState() : 0;
743 }
744 };
745
91c60b57 746protected: //! @name methods related to ray-tracing
747
748 //! Updates 3D scene geometry for ray-tracing.
749 Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
750 const Standard_Integer theViewId,
751 const Handle(OpenGl_Context)& theGlContext);
752
753 //! Updates 3D scene light sources for ray-tracing.
754 Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
755
91c60b57 756 //! Checks to see if the OpenGL structure is modified.
757 Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
758
759 //! Adds OpenGL structure to ray-traced scene geometry.
760 Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
761 const Handle(OpenGl_Context)& theGlContext);
762
763 //! Adds OpenGL groups to ray-traced scene geometry.
8c820969 764 Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
765 const OpenGl_RaytraceMaterial& theStructMat,
1f7f5a90 766 const Handle(Geom_Transformation)& theTrsf,
8c820969 767 const Handle(OpenGl_Context)& theGlContext);
91c60b57 768
769 //! Creates ray-tracing material properties.
770 OpenGl_RaytraceMaterial convertMaterial (const OpenGl_AspectFace* theAspect,
771 const Handle(OpenGl_Context)& theGlContext);
772
773 //! Adds OpenGL primitive array to ray-traced scene geometry.
f5b72419 774 Handle(OpenGl_TriangleSet) addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
775 const Standard_Integer theMatID,
776 const OpenGl_Mat4* theTrans);
91c60b57 777
778 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
779 Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
780 const Standard_Integer theMatID,
781 const Standard_Integer theCount,
782 const Standard_Integer theOffset,
783 const OpenGl_PrimitiveArray& theArray);
784
785 //! Adds OpenGL triangle array to ray-traced scene geometry.
786 Standard_Boolean addRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
787 const Standard_Integer theMatID,
788 const Standard_Integer theCount,
789 const Standard_Integer theOffset,
790 const Handle(Graphic3d_IndexBuffer)& theIndices);
791
792 //! Adds OpenGL triangle fan array to ray-traced scene geometry.
793 Standard_Boolean addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
794 const Standard_Integer theMatID,
795 const Standard_Integer theCount,
796 const Standard_Integer theOffset,
797 const Handle(Graphic3d_IndexBuffer)& theIndices);
798
799 //! Adds OpenGL triangle strip array to ray-traced scene geometry.
800 Standard_Boolean addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
801 const Standard_Integer theMatID,
802 const Standard_Integer theCount,
803 const Standard_Integer theOffset,
804 const Handle(Graphic3d_IndexBuffer)& theIndices);
805
806 //! Adds OpenGL quadrangle array to ray-traced scene geometry.
807 Standard_Boolean addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
808 const Standard_Integer theMatID,
809 const Standard_Integer theCount,
810 const Standard_Integer theOffset,
811 const Handle(Graphic3d_IndexBuffer)& theIndices);
812
813 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
814 Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
815 const Standard_Integer theMatID,
816 const Standard_Integer theCount,
817 const Standard_Integer theOffset,
818 const Handle(Graphic3d_IndexBuffer)& theIndices);
819
820 //! Adds OpenGL polygon array to ray-traced scene geometry.
821 Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
822 const Standard_Integer theMatID,
823 const Standard_Integer theCount,
824 const Standard_Integer theOffset,
825 const Handle(Graphic3d_IndexBuffer)& theIndices);
826
827 //! Uploads ray-trace data to the GPU.
828 Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
829
830 //! Generates shader prefix based on current ray-tracing options.
831 TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
832
833 //! Performs safe exit when shaders initialization fails.
834 Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
835 const Handle(OpenGl_Context)& theGlContext);
836
837 //! Loads and compiles shader object from specified source.
838 Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
839 const ShaderSource& theSource,
840 const Handle(OpenGl_Context)& theGlContext);
841
189f85a3 842 //! Creates shader program from the given vertex and fragment shaders.
843 Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
844 const Handle(OpenGl_ShaderObject)& theVertShader,
845 const Handle(OpenGl_ShaderObject)& theFragShader);
846
91c60b57 847 //! Initializes OpenGL/GLSL shader programs.
66d1cdc6 848 Standard_Boolean initRaytraceResources (const Standard_Integer theSizeX,
849 const Standard_Integer theSizeY,
850 const Handle(OpenGl_Context)& theGlContext);
91c60b57 851
852 //! Releases OpenGL/GLSL shader programs.
d877e610 853 void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext,
854 const Standard_Boolean theToRebuild = Standard_False);
91c60b57 855
bf02aa7d 856 //! Updates auxiliary OpenGL frame buffers.
857 Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
91c60b57 858 const Standard_Integer theSizeY,
859 const Handle(OpenGl_Context)& theGlContext);
860
861 //! Generates viewing rays for corners of screen quad.
b27ab03d 862 //! (ray tracing; path tracing for orthographic camera)
91c60b57 863 void updateCamera (const OpenGl_Mat4& theOrientation,
864 const OpenGl_Mat4& theViewMapping,
865 OpenGl_Vec3* theOrigins,
866 OpenGl_Vec3* theDirects,
1d865689 867 OpenGl_Mat4& theView,
91c60b57 868 OpenGl_Mat4& theUnView);
869
b27ab03d 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);
878
91c60b57 879 //! Binds ray-trace textures to corresponding texture units.
66d1cdc6 880 void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext,
881 int theStereoView);
91c60b57 882
883 //! Unbinds ray-trace textures from corresponding texture unit.
884 void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
885
886 //! Sets uniform state for the given ray-tracing shader program.
3a9b5dc8 887 Standard_Boolean setUniformState (const Standard_Integer theProgramId,
888 const Standard_Integer theSizeX,
889 const Standard_Integer theSizeY,
b27ab03d 890 Graphic3d_Camera::Projection theProjection,
91c60b57 891 const Handle(OpenGl_Context)& theGlContext);
892
893 //! Runs ray-tracing shader programs.
c357e426 894 Standard_Boolean runRaytraceShaders (const Standard_Integer theSizeX,
91c60b57 895 const Standard_Integer theSizeY,
bf02aa7d 896 Graphic3d_Camera::Projection theProjection,
38a0206f 897 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 898 const Handle(OpenGl_Context)& theGlContext);
899
3a9b5dc8 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);
906
907 //! Runs path tracing (global illumination) kernel.
4eaaf9d8 908 Standard_Boolean runPathtrace (const Standard_Integer theSizeX,
909 const Standard_Integer theSizeY,
910 Graphic3d_Camera::Projection theProjection,
4eaaf9d8 911 const Handle(OpenGl_Context)& theGlContext);
3a9b5dc8 912
66d1cdc6 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);
917
3a9b5dc8 918 //! Redraws the window using OpenGL/GLSL ray-tracing or path tracing.
c357e426 919 Standard_Boolean raytrace (const Standard_Integer theSizeX,
91c60b57 920 const Standard_Integer theSizeY,
bf02aa7d 921 Graphic3d_Camera::Projection theProjection,
38a0206f 922 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 923 const Handle(OpenGl_Context)& theGlContext);
924
925protected: //! @name fields related to ray-tracing
926
3a9b5dc8 927 //! Result of RT/PT shaders initialization.
91c60b57 928 RaytraceInitStatus myRaytraceInitStatus;
929
3a9b5dc8 930 //! Is ray-tracing geometry data valid?
91c60b57 931 Standard_Boolean myIsRaytraceDataValid;
932
3a9b5dc8 933 //! True if warning about missing extension GL_ARB_bindless_texture has been displayed.
91c60b57 934 Standard_Boolean myIsRaytraceWarnTextures;
935
936 //! 3D scene geometry data for ray-tracing.
937 OpenGl_RaytraceGeometry myRaytraceGeometry;
938
f5b72419 939 //! Builder for triangle set.
940 opencascade::handle<BVH_Builder<Standard_ShortReal, 3> > myRaytraceBVHBuilder;
941
91c60b57 942 //! Compile-time ray-tracing parameters.
943 RaytracingParams myRaytraceParameters;
944
945 //! Radius of bounding sphere of the scene.
946 Standard_ShortReal myRaytraceSceneRadius;
947 //! Scene epsilon to prevent self-intersections.
948 Standard_ShortReal myRaytraceSceneEpsilon;
949
950 //! OpenGL/GLSL source of ray-tracing fragment shader.
951 ShaderSource myRaytraceShaderSource;
952 //! OpenGL/GLSL source of adaptive-AA fragment shader.
953 ShaderSource myPostFSAAShaderSource;
3a9b5dc8 954 //! OpenGL/GLSL source of RT/PT display fragment shader.
955 ShaderSource myOutImageShaderSource;
91c60b57 956
957 //! OpenGL/GLSL ray-tracing fragment shader.
958 Handle(OpenGl_ShaderObject) myRaytraceShader;
959 //! OpenGL/GLSL adaptive-AA fragment shader.
960 Handle(OpenGl_ShaderObject) myPostFSAAShader;
3a9b5dc8 961 //! OpenGL/GLSL ray-tracing display fragment shader.
962 Handle(OpenGl_ShaderObject) myOutImageShader;
91c60b57 963
964 //! OpenGL/GLSL ray-tracing shader program.
965 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
966 //! OpenGL/GLSL adaptive-AA shader program.
967 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
189f85a3 968 //! OpenGL/GLSL program for displaying texture.
969 Handle(OpenGl_ShaderProgram) myOutImageProgram;
91c60b57 970
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;
979
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;
988
989 //! Texture buffer of material properties.
990 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
991 //! Texture buffer of light source properties.
992 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
993
994 //! 1st framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 995 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 996 Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
91c60b57 997 //! 2nd framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 998 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 999 Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
3a9b5dc8 1000
1001 //! Output textures (2 textures are used in stereo mode).
1002 //! Used if adaptive screen sampling is activated.
1003 Handle(OpenGl_Texture) myRaytraceOutputTexture[2];
1004
b27ab03d 1005 //! Texture containing per-tile visual error estimation (2 textures are used in stereo mode).
3a9b5dc8 1006 //! Used if adaptive screen sampling is activated.
b27ab03d 1007 Handle(OpenGl_Texture) myRaytraceVisualErrorTexture[2];
1008 //! Texture containing offsets of sampled screen tiles (2 textures are used in stereo mode).
3a9b5dc8 1009 //! Used if adaptive screen sampling is activated.
b27ab03d 1010 Handle(OpenGl_Texture) myRaytraceTileOffsetsTexture[2];
91c60b57 1011
1012 //! Vertex buffer (VBO) for drawing dummy quad.
1013 OpenGl_VertexBuffer myRaytraceScreenQuad;
1014
1015 //! Cached locations of frequently used uniform variables.
1016 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
1017
1018 //! State of OpenGL structures reflected to ray-tracing.
d4aaad5b 1019 std::map<const OpenGl_Structure*, StructState> myStructureStates;
91c60b57 1020
1021 //! PrimitiveArray to TriangleSet map for scene partial update.
1022 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
1023
189f85a3 1024 //! Set of IDs of non-raytracable elements (to detect updates).
1025 std::set<Standard_Integer> myNonRaytraceStructureIDs;
1026
91c60b57 1027 //! Marks if environment map should be updated.
1028 Standard_Boolean myToUpdateEnvironmentMap;
1029
1030 //! State of OpenGL layer list.
bd6a8454 1031 Standard_Size myRaytraceLayerListState;
189f85a3 1032
1033 //! Number of accumulated frames (for progressive rendering).
1034 Standard_Integer myAccumFrames;
1035
1036 //! Stored ray origins used for detection of camera movements.
1037 OpenGl_Vec3 myPreviousOrigins[3];
1038
1039 //! Bullard RNG to produce random sequence.
1040 math_BullardGenerator myRNG;
91c60b57 1041
3a9b5dc8 1042 //! Tool object for sampling screen tiles in PT mode.
1043 OpenGl_TileSampler myTileSampler;
1044
b27ab03d 1045 //! Camera position used for projective mode
1046 OpenGl_Vec3 myEyeOrig;
1047
1048 //! Camera view direction used for projective mode
1049 OpenGl_Vec3 myEyeView;
1050
1051 //! Camera's screen vertical direction used for projective mode
1052 OpenGl_Vec3 myEyeVert;
1053
1054 //! Camera's screen horizontal direction used for projective mode
1055 OpenGl_Vec3 myEyeSide;
1056
1057 //! Camera's screen size used for projective mode
1058 OpenGl_Vec2 myEyeSize;
1059
1060 //! Aperture radius of camera on previous frame used for depth-of-field (path tracing)
1061 float myPrevCameraApertureRadius;
1062
1063 //! Focal distance of camera on previous frame used for depth-of-field (path tracing)
1064 float myPrevCameraFocalPlaneDist;
1065
679ecdee 1066public:
1067
1c35b92f 1068 DEFINE_STANDARD_ALLOC
92efcf78 1069 DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
679ecdee 1070
c357e426 1071 friend class OpenGl_GraphicDriver;
a89742cf 1072 friend class OpenGl_Workspace;
a1073ae2 1073 friend class OpenGl_LayerList;
15669413 1074 friend class OpenGl_FrameStats;
2166f0fa
SK
1075};
1076
679ecdee 1077#endif // _OpenGl_View_Header