0028698: Visualization, Graphic3d_CView - mark methods MinMaxValues() and NumberOfDis...
[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
383c6c9f 576 OpenGl_RT_uAccumSamples,
189f85a3 577 OpenGl_RT_uFrameRndSeed,
578
579 // adaptive FSAA params
91c60b57 580 OpenGl_RT_uOffsetX,
581 OpenGl_RT_uOffsetY,
582 OpenGl_RT_uSamples,
91c60b57 583
b09447ed 584 // images used by ISS mode
3a9b5dc8 585 OpenGl_RT_uRenderImage,
586 OpenGl_RT_uOffsetImage,
587
b09447ed 588 // maximum radiance value
589 OpenGl_RT_uMaxRadiance,
590
91c60b57 591 OpenGl_RT_NbVariables // special field
592 };
593
3a9b5dc8 594 //! Defines OpenGL texture samplers.
91c60b57 595 enum ShaderSamplerNames
596 {
6e728f3b 597 OpenGl_RT_EnvironmentMapTexture = 0,
91c60b57 598
6e728f3b 599 OpenGl_RT_SceneNodeInfoTexture = 1,
600 OpenGl_RT_SceneMinPointTexture = 2,
601 OpenGl_RT_SceneMaxPointTexture = 3,
602 OpenGl_RT_SceneTransformTexture = 4,
91c60b57 603
6e728f3b 604 OpenGl_RT_GeometryVertexTexture = 5,
605 OpenGl_RT_GeometryNormalTexture = 6,
606 OpenGl_RT_GeometryTexCrdTexture = 7,
607 OpenGl_RT_GeometryTriangTexture = 8,
91c60b57 608
609 OpenGl_RT_RaytraceMaterialTexture = 9,
610 OpenGl_RT_RaytraceLightSrcTexture = 10,
611
189f85a3 612 OpenGl_RT_FsaaInputTexture = 11,
613 OpenGl_RT_PrevAccumTexture = 12,
91c60b57 614
3a9b5dc8 615 OpenGl_RT_RaytraceDepthTexture = 13
616 };
617
618 //! Defines OpenGL image samplers.
619 enum ShaderImageNames
620 {
621 OpenGl_RT_OutputImageLft = 0,
622 OpenGl_RT_OutputImageRgh = 1,
623 OpenGl_RT_VisualErrorImage = 2,
624 OpenGl_RT_TileOffsetsImage = 3
91c60b57 625 };
626
627 //! Tool class for management of shader sources.
628 class ShaderSource
629 {
630 public:
631
189f85a3 632 //! Default shader prefix - empty string.
633 static const TCollection_AsciiString EMPTY_PREFIX;
634
91c60b57 635 //! Creates new uninitialized shader source.
636 ShaderSource()
637 {
638 //
639 }
640
73722cc9 641 public:
189f85a3 642
73722cc9 643 //! Returns error description in case of load fail.
644 const TCollection_AsciiString& ErrorDescription() const
645 {
646 return myError;
91c60b57 647 }
648
91c60b57 649 //! Returns prefix to insert before the source.
650 const TCollection_AsciiString& Prefix() const
651 {
652 return myPrefix;
653 }
654
655 //! Sets prefix to insert before the source.
656 void SetPrefix (const TCollection_AsciiString& thePrefix)
657 {
658 myPrefix = thePrefix;
659 }
660
661 //! Returns shader source combined with prefix.
662 TCollection_AsciiString Source() const;
663
664 //! Loads shader source from specified files.
ee5befae 665 Standard_Boolean LoadFromFiles (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
666
667 //! Loads shader source from specified strings.
668 Standard_Boolean LoadFromStrings (const TCollection_AsciiString* theStrings, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
91c60b57 669
670 private:
671
672 TCollection_AsciiString mySource; //!< Source string of the shader object
673 TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
73722cc9 674 TCollection_AsciiString myError; //!< error state
91c60b57 675
676 };
677
678 //! Default ray-tracing depth.
679 static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
680
681 //! Default size of traversal stack.
f2474958 682 static const Standard_Integer THE_DEFAULT_STACK_SIZE = 10;
91c60b57 683
684 //! Compile-time ray-tracing parameters.
685 struct RaytracingParams
686 {
687 //! Actual size of traversal stack in shader program.
688 Standard_Integer StackSize;
689
690 //! Actual ray-tracing depth (number of ray bounces).
691 Standard_Integer NbBounces;
692
f483f2ed 693 //! Enables/disables light propagation through transparent media.
91c60b57 694 Standard_Boolean TransparentShadows;
695
189f85a3 696 //! Enables/disables global illumination (GI) effects.
697 Standard_Boolean GlobalIllumination;
698
f483f2ed 699 //! Enables/disables the use of OpenGL bindless textures.
700 Standard_Boolean UseBindlessTextures;
701
b4327ba8 702 //! Enables/disables two-sided BSDF models instead of one-sided.
703 Standard_Boolean TwoSidedBsdfModels;
704
3a9b5dc8 705 //! Enables/disables adaptive screen sampling for path tracing.
706 Standard_Boolean AdaptiveScreenSampling;
707
b09447ed 708 //! Enables/disables environment map for background.
709 Standard_Boolean UseEnvMapForBackground;
710
711 //! Maximum radiance value used for clamping radiance estimation.
712 Standard_ShortReal RadianceClampingValue;
713
4eaaf9d8 714 //! Number of tiles in X dimension (in adaptive sampling mode).
715 Standard_Integer NbTilesX;
716
717 //! Number of tiles in Y dimension (in adaptive sampling mode).
718 Standard_Integer NbTilesY;
719
91c60b57 720 //! Creates default compile-time ray-tracing parameters.
721 RaytracingParams()
b09447ed 722 : StackSize (THE_DEFAULT_STACK_SIZE),
723 NbBounces (THE_DEFAULT_NB_BOUNCES),
b4327ba8 724 TransparentShadows (Standard_False),
725 GlobalIllumination (Standard_False),
726 UseBindlessTextures (Standard_False),
727 TwoSidedBsdfModels (Standard_False),
b09447ed 728 AdaptiveScreenSampling (Standard_False),
729 UseEnvMapForBackground (Standard_False),
4eaaf9d8 730 RadianceClampingValue (30.0),
731 NbTilesX (16),
732 NbTilesY (16) { }
91c60b57 733 };
734
d4aaad5b 735 //! Describes state of OpenGL structure.
736 struct StructState
737 {
738 Standard_Size StructureState;
739 Standard_Size InstancedState;
740
741 //! Creates new structure state.
742 StructState (const Standard_Size theStructureState = 0,
743 const Standard_Size theInstancedState = 0)
744 : StructureState (theStructureState),
745 InstancedState (theInstancedState)
746 {
747 //
748 }
749
750 //! Creates new structure state.
751 StructState (const OpenGl_Structure* theStructure)
752 {
753 StructureState = theStructure->ModificationState();
754
755 InstancedState = theStructure->InstancedStructure() != NULL ?
756 theStructure->InstancedStructure()->ModificationState() : 0;
757 }
758 };
759
91c60b57 760protected: //! @name methods related to ray-tracing
761
762 //! Updates 3D scene geometry for ray-tracing.
763 Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
764 const Standard_Integer theViewId,
765 const Handle(OpenGl_Context)& theGlContext);
766
767 //! Updates 3D scene light sources for ray-tracing.
768 Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
769
91c60b57 770 //! Checks to see if the OpenGL structure is modified.
771 Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
772
773 //! Adds OpenGL structure to ray-traced scene geometry.
774 Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
775 const Handle(OpenGl_Context)& theGlContext);
776
777 //! Adds OpenGL groups to ray-traced scene geometry.
8c820969 778 Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
779 const OpenGl_RaytraceMaterial& theStructMat,
1f7f5a90 780 const Handle(Geom_Transformation)& theTrsf,
8c820969 781 const Handle(OpenGl_Context)& theGlContext);
91c60b57 782
783 //! Creates ray-tracing material properties.
784 OpenGl_RaytraceMaterial convertMaterial (const OpenGl_AspectFace* theAspect,
785 const Handle(OpenGl_Context)& theGlContext);
786
787 //! Adds OpenGL primitive array to ray-traced scene geometry.
788 OpenGl_TriangleSet* addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
789 const Standard_Integer theMatID,
790 const OpenGl_Mat4* theTrans);
791
792 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
793 Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
794 const Standard_Integer theMatID,
795 const Standard_Integer theCount,
796 const Standard_Integer theOffset,
797 const OpenGl_PrimitiveArray& theArray);
798
799 //! Adds OpenGL triangle array to ray-traced scene geometry.
800 Standard_Boolean addRaytraceTriangleArray (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 triangle fan array to ray-traced scene geometry.
807 Standard_Boolean addRaytraceTriangleFanArray (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 triangle strip array to ray-traced scene geometry.
814 Standard_Boolean addRaytraceTriangleStripArray (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 quadrangle array to ray-traced scene geometry.
821 Standard_Boolean addRaytraceQuadrangleArray (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 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
828 Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
829 const Standard_Integer theMatID,
830 const Standard_Integer theCount,
831 const Standard_Integer theOffset,
832 const Handle(Graphic3d_IndexBuffer)& theIndices);
833
834 //! Adds OpenGL polygon array to ray-traced scene geometry.
835 Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
836 const Standard_Integer theMatID,
837 const Standard_Integer theCount,
838 const Standard_Integer theOffset,
839 const Handle(Graphic3d_IndexBuffer)& theIndices);
840
841 //! Uploads ray-trace data to the GPU.
842 Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
843
844 //! Generates shader prefix based on current ray-tracing options.
845 TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
846
847 //! Performs safe exit when shaders initialization fails.
848 Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
849 const Handle(OpenGl_Context)& theGlContext);
850
851 //! Loads and compiles shader object from specified source.
852 Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
853 const ShaderSource& theSource,
854 const Handle(OpenGl_Context)& theGlContext);
855
189f85a3 856 //! Creates shader program from the given vertex and fragment shaders.
857 Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
858 const Handle(OpenGl_ShaderObject)& theVertShader,
859 const Handle(OpenGl_ShaderObject)& theFragShader);
860
91c60b57 861 //! Initializes OpenGL/GLSL shader programs.
c357e426 862 Standard_Boolean initRaytraceResources (const Handle(OpenGl_Context)& theGlContext);
91c60b57 863
864 //! Releases OpenGL/GLSL shader programs.
d877e610 865 void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext,
866 const Standard_Boolean theToRebuild = Standard_False);
91c60b57 867
bf02aa7d 868 //! Updates auxiliary OpenGL frame buffers.
869 Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
91c60b57 870 const Standard_Integer theSizeY,
871 const Handle(OpenGl_Context)& theGlContext);
872
873 //! Generates viewing rays for corners of screen quad.
874 void updateCamera (const OpenGl_Mat4& theOrientation,
875 const OpenGl_Mat4& theViewMapping,
876 OpenGl_Vec3* theOrigins,
877 OpenGl_Vec3* theDirects,
1d865689 878 OpenGl_Mat4& theView,
91c60b57 879 OpenGl_Mat4& theUnView);
880
881 //! Binds ray-trace textures to corresponding texture units.
882 void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
883
884 //! Unbinds ray-trace textures from corresponding texture unit.
885 void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
886
887 //! Sets uniform state for the given ray-tracing shader program.
3a9b5dc8 888 Standard_Boolean setUniformState (const Standard_Integer theProgramId,
889 const Standard_Integer theSizeX,
890 const Standard_Integer theSizeY,
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,
911 OpenGl_FrameBuffer* theReadDrawFbo,
912 const Handle(OpenGl_Context)& theGlContext);
3a9b5dc8 913
914 //! Redraws the window using OpenGL/GLSL ray-tracing or path tracing.
c357e426 915 Standard_Boolean raytrace (const Standard_Integer theSizeX,
91c60b57 916 const Standard_Integer theSizeY,
bf02aa7d 917 Graphic3d_Camera::Projection theProjection,
38a0206f 918 OpenGl_FrameBuffer* theReadDrawFbo,
91c60b57 919 const Handle(OpenGl_Context)& theGlContext);
920
921protected: //! @name fields related to ray-tracing
922
3a9b5dc8 923 //! Result of RT/PT shaders initialization.
91c60b57 924 RaytraceInitStatus myRaytraceInitStatus;
925
3a9b5dc8 926 //! Is ray-tracing geometry data valid?
91c60b57 927 Standard_Boolean myIsRaytraceDataValid;
928
3a9b5dc8 929 //! True if warning about missing extension GL_ARB_bindless_texture has been displayed.
91c60b57 930 Standard_Boolean myIsRaytraceWarnTextures;
931
932 //! 3D scene geometry data for ray-tracing.
933 OpenGl_RaytraceGeometry myRaytraceGeometry;
934
935 //! Compile-time ray-tracing parameters.
936 RaytracingParams myRaytraceParameters;
937
938 //! Radius of bounding sphere of the scene.
939 Standard_ShortReal myRaytraceSceneRadius;
940 //! Scene epsilon to prevent self-intersections.
941 Standard_ShortReal myRaytraceSceneEpsilon;
942
943 //! OpenGL/GLSL source of ray-tracing fragment shader.
944 ShaderSource myRaytraceShaderSource;
945 //! OpenGL/GLSL source of adaptive-AA fragment shader.
946 ShaderSource myPostFSAAShaderSource;
3a9b5dc8 947 //! OpenGL/GLSL source of RT/PT display fragment shader.
948 ShaderSource myOutImageShaderSource;
91c60b57 949
950 //! OpenGL/GLSL ray-tracing fragment shader.
951 Handle(OpenGl_ShaderObject) myRaytraceShader;
952 //! OpenGL/GLSL adaptive-AA fragment shader.
953 Handle(OpenGl_ShaderObject) myPostFSAAShader;
3a9b5dc8 954 //! OpenGL/GLSL ray-tracing display fragment shader.
955 Handle(OpenGl_ShaderObject) myOutImageShader;
91c60b57 956
957 //! OpenGL/GLSL ray-tracing shader program.
958 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
959 //! OpenGL/GLSL adaptive-AA shader program.
960 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
189f85a3 961 //! OpenGL/GLSL program for displaying texture.
962 Handle(OpenGl_ShaderProgram) myOutImageProgram;
91c60b57 963
964 //! Texture buffer of data records of bottom-level BVH nodes.
965 Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
966 //! Texture buffer of minimum points of bottom-level BVH nodes.
967 Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
968 //! Texture buffer of maximum points of bottom-level BVH nodes.
969 Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;
970 //! Texture buffer of transformations of high-level BVH nodes.
971 Handle(OpenGl_TextureBufferArb) mySceneTransformTexture;
972
973 //! Texture buffer of vertex coords.
974 Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture;
975 //! Texture buffer of vertex normals.
976 Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture;
977 //! Texture buffer of vertex UV coords.
978 Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture;
979 //! Texture buffer of triangle indices.
980 Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture;
981
982 //! Texture buffer of material properties.
983 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
984 //! Texture buffer of light source properties.
985 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
986
987 //! 1st framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 988 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 989 Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
91c60b57 990 //! 2nd framebuffer (FBO) to perform adaptive FSAA.
3a9b5dc8 991 //! Used in compatibility mode (no adaptive sampling).
bf02aa7d 992 Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
3a9b5dc8 993
994 //! Output textures (2 textures are used in stereo mode).
995 //! Used if adaptive screen sampling is activated.
996 Handle(OpenGl_Texture) myRaytraceOutputTexture[2];
997
998 //! Texture containing per-tile visual error estimation.
999 //! Used if adaptive screen sampling is activated.
1000 Handle(OpenGl_Texture) myRaytraceVisualErrorTexture;
1001 //! Texture containing offsets of sampled screen tiles.
1002 //! Used if adaptive screen sampling is activated.
1003 Handle(OpenGl_Texture) myRaytraceTileOffsetsTexture;
91c60b57 1004
1005 //! Vertex buffer (VBO) for drawing dummy quad.
1006 OpenGl_VertexBuffer myRaytraceScreenQuad;
1007
1008 //! Cached locations of frequently used uniform variables.
1009 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
1010
1011 //! State of OpenGL structures reflected to ray-tracing.
d4aaad5b 1012 std::map<const OpenGl_Structure*, StructState> myStructureStates;
91c60b57 1013
1014 //! PrimitiveArray to TriangleSet map for scene partial update.
1015 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
1016
189f85a3 1017 //! Set of IDs of non-raytracable elements (to detect updates).
1018 std::set<Standard_Integer> myNonRaytraceStructureIDs;
1019
1020 //! Render filter to filter out all raytracable structures.
91c60b57 1021 Handle(OpenGl_RaytraceFilter) myRaytraceFilter;
1022
1023 //! Marks if environment map should be updated.
1024 Standard_Boolean myToUpdateEnvironmentMap;
1025
1026 //! State of OpenGL layer list.
bd6a8454 1027 Standard_Size myRaytraceLayerListState;
189f85a3 1028
1029 //! Number of accumulated frames (for progressive rendering).
1030 Standard_Integer myAccumFrames;
1031
1032 //! Stored ray origins used for detection of camera movements.
1033 OpenGl_Vec3 myPreviousOrigins[3];
1034
1035 //! Bullard RNG to produce random sequence.
1036 math_BullardGenerator myRNG;
91c60b57 1037
3a9b5dc8 1038 //! Tool object for sampling screen tiles in PT mode.
1039 OpenGl_TileSampler myTileSampler;
1040
679ecdee 1041public:
1042
1c35b92f 1043 DEFINE_STANDARD_ALLOC
92efcf78 1044 DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
679ecdee 1045
c357e426 1046 friend class OpenGl_GraphicDriver;
a89742cf 1047 friend class OpenGl_Workspace;
2166f0fa
SK
1048};
1049
679ecdee 1050#endif // _OpenGl_View_Header