1 // Created on: 2011-09-20
2 // Created by: Sergey ZERCHANINOV
3 // Copyright (c) 2011-2013 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 #ifndef _OpenGl_Workspace_Header
17 #define _OpenGl_Workspace_Header
22 #include <Handle_OpenGl_Workspace.hxx>
23 #include <OpenGl_Window.hxx>
25 #include <TColStd_Array2OfReal.hxx>
26 #include <Quantity_Color.hxx>
27 #include <Graphic3d_CView.hxx>
28 #include <Graphic3d_TypeOfComposition.hxx>
29 #include <Graphic3d_TypeOfTexture.hxx>
30 #include <Graphic3d_PtrFrameBuffer.hxx>
31 #include <Graphic3d_BufferType.hxx>
32 #include <Handle_Graphic3d_TextureParams.hxx>
34 #include <Aspect_CLayer2d.hxx>
35 #include <Aspect_Handle.hxx>
36 #include <Aspect_PrintAlgo.hxx>
37 #include <Aspect_PolygonOffsetMode.hxx>
39 #include <InterfaceGraphic_Graphic3d.hxx>
40 #include <InterfaceGraphic_Visual3d.hxx>
42 #include <NCollection_Sequence.hxx>
44 #include <OpenGl_AspectFace.hxx>
45 #include <OpenGl_FrameBuffer.hxx>
46 #include <OpenGl_Matrix.hxx>
47 #include <OpenGl_NamedStatus.hxx>
48 #include <OpenGl_PrinterContext.hxx>
49 #include <OpenGl_SceneGeometry.hxx>
50 #include <OpenGl_TextParam.hxx>
51 #include <OpenGl_RenderFilter.hxx>
52 #include <OpenGl_Vec.hxx>
53 #include <OpenGl_LineAttributes.hxx>
55 #include <Handle_OpenGl_View.hxx>
56 #include <Handle_OpenGl_Texture.hxx>
58 #include <OpenGl_ShaderObject.hxx>
59 #include <OpenGl_ShaderProgram.hxx>
60 #include <OpenGl_TextureBufferArb.hxx>
62 class OpenGl_AspectLine;
63 class OpenGl_AspectMarker;
64 class OpenGl_AspectText;
65 class OpenGl_FrameBuffer;
66 class OpenGl_Structure;
67 class OpenGl_TriangleSet;
71 //! OpenGL material definition
72 struct OpenGl_Material
75 OpenGl_Vec4 Ambient; //!< ambient reflection coefficient
76 OpenGl_Vec4 Diffuse; //!< diffuse reflection coefficient
77 OpenGl_Vec4 Specular; //!< glossy reflection coefficient
78 OpenGl_Vec4 Emission; //!< material emission
79 OpenGl_Vec4 Params; //!< extra packed parameters
81 Standard_ShortReal Shine() const { return Params.x(); }
82 Standard_ShortReal& ChangeShine() { return Params.x(); }
84 Standard_ShortReal Transparency() const { return Params.y(); }
85 Standard_ShortReal& ChangeTransparency() { return Params.y(); }
87 //! Initialize material
88 void Init (const OPENGL_SURF_PROP& theProps);
90 //! Returns packed (serialized) representation of material properties
91 const OpenGl_Vec4* Packed() const { return reinterpret_cast<const OpenGl_Vec4*> (this); }
92 static Standard_Integer NbOfVec4() { return 5; }
96 DEFINE_STANDARD_HANDLE (OpenGl_RaytraceFilter, OpenGl_RenderFilter)
98 //! Graphical ray-tracing filter.
99 //! Filters out all raytracable structures.
100 class OpenGl_RaytraceFilter : public OpenGl_RenderFilter
104 //! Default constructor.
105 OpenGl_RaytraceFilter() {}
107 //! Remembers the previously set filter.
108 inline void SetPrevRenderFilter (const Handle(OpenGl_RenderFilter)& theFilter)
110 myPrevRenderFilter = theFilter;
113 //! Checks whether the element can be rendered or not.
114 //! @param theElement [in] the element to check.
115 //! @return True if element can be rendered.
116 virtual Standard_Boolean CanRender (const OpenGl_Element* theElement);
120 Handle(OpenGl_RenderFilter) myPrevRenderFilter;
124 DEFINE_STANDARD_RTTI(OpenGl_RaytraceFilter)
127 //! Represents window with GL context.
128 //! Provides methods to render primitives and maintain GL state.
129 class OpenGl_Workspace : public OpenGl_Window
133 //! Main constructor - prepare GL context for specified window.
134 OpenGl_Workspace (const Handle(OpenGl_GraphicDriver)& theDriver,
135 const CALL_DEF_WINDOW& theCWindow,
136 Aspect_RenderingContext theGContext,
137 const Handle(OpenGl_Caps)& theCaps,
138 const Handle(OpenGl_Context)& theShareCtx);
141 virtual ~OpenGl_Workspace();
143 void SetActiveView (const Handle(OpenGl_View)& theView,
144 const Standard_Integer theViewId)
147 myViewId = theViewId;
150 const Handle(OpenGl_View)& ActiveView() const { return myView; }
152 Standard_Integer ActiveViewId() const { return myViewId; }
154 //! Redraw the window.
155 void Redraw (const Graphic3d_CView& theCView,
156 const Aspect_CLayer2d& theCUnderLayer,
157 const Aspect_CLayer2d& theCOverLayer);
159 Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer);
160 void RedrawImmediate (const Graphic3d_CView& theCView,
161 const Aspect_CLayer2d& theCUnderLayer,
162 const Aspect_CLayer2d& theCOverLayer,
163 const Standard_Boolean theToForce = Standard_False,
164 OpenGl_FrameBuffer* theTargetFBO = NULL);
166 void Invalidate (const Graphic3d_CView& /*theCView*/)
168 myBackBufferRestored = Standard_False;
171 //! Special method to perform printing.
172 //! System-specific and currently only Win platform implemented.
173 Standard_Boolean Print (const Handle(OpenGl_PrinterContext)& thePrintContext,
174 const Graphic3d_CView& theCView,
175 const Aspect_CLayer2d& theCUnderLayer,
176 const Aspect_CLayer2d& theCOverLayer,
177 const Aspect_Handle theHPrintDC,
178 const Standard_Boolean theToShowBackground,
179 const Standard_CString theFileName,
180 const Aspect_PrintAlgo thePrintAlgorithm,
181 const Standard_Real theScaleFactor);
183 const Handle(OpenGl_PrinterContext)& PrinterContext() const
185 return myPrintContext;
188 void DisplayCallback (const Graphic3d_CView& theCView, int theReason);
190 Graphic3d_PtrFrameBuffer FBOCreate (const Standard_Integer theWidth, const Standard_Integer theHeight);
191 void FBORelease (Graphic3d_PtrFrameBuffer theFBOPtr);
192 Standard_Boolean BufferDump (OpenGl_FrameBuffer* theFBOPtr,
193 Image_PixMap& theImage,
194 const Graphic3d_BufferType& theBufferType);
196 Standard_Boolean& UseZBuffer() { return myUseZBuffer; }
197 Standard_Boolean& UseDepthTest() { return myUseDepthTest; }
198 Standard_Boolean& UseGLLight() { return myUseGLLight; }
200 Standard_Integer AntiAliasingMode() const { return myAntiAliasingMode; }
202 //// RELATED TO STATUS ////
204 Standard_Integer NamedStatus;
206 const TEL_COLOUR* HighlightColor;
208 const OpenGl_AspectLine* SetAspectLine (const OpenGl_AspectLine* theAspect);
209 const OpenGl_AspectFace* SetAspectFace (const OpenGl_AspectFace* theAspect);
210 const OpenGl_AspectMarker* SetAspectMarker (const OpenGl_AspectMarker* theAspect);
211 const OpenGl_AspectText* SetAspectText (const OpenGl_AspectText* theAspect);
213 void SetTextParam (const OpenGl_TextParam* theParam) { TextParam_set = theParam; }
215 //// THESE METHODS ARE EXPORTED AS THEY PROVIDE STATE INFO TO USERDRAW
216 Standard_EXPORT const OpenGl_AspectLine* AspectLine (const Standard_Boolean theWithApply);
217 Standard_EXPORT const OpenGl_AspectFace* AspectFace (const Standard_Boolean theWithApply);
218 Standard_EXPORT const OpenGl_AspectMarker* AspectMarker (const Standard_Boolean theWithApply);
219 Standard_EXPORT const OpenGl_AspectText* AspectText (const Standard_Boolean theWithApply);
220 inline const OpenGl_TextParam* AspectTextParams() const
222 return TextParam_applied;
225 //! Clear the applied aspect state.
226 void ResetAppliedAspect();
228 Standard_EXPORT Handle(OpenGl_Texture) DisableTexture();
229 Standard_EXPORT Handle(OpenGl_Texture) EnableTexture (const Handle(OpenGl_Texture)& theTexture,
230 const Handle(Graphic3d_TextureParams)& theParams = NULL);
231 const Handle(OpenGl_Texture)& ActiveTexture() const { return myTextureBound; }
233 //! Set filter for restricting rendering of particular elements.
234 //! Filter can be applied for rendering passes used by recursive
235 //! rendering algorithms for rendering elements of groups.
236 //! @param theFilter [in] the filter instance.
237 inline void SetRenderFilter (const Handle(OpenGl_RenderFilter)& theFilter)
239 myRenderFilter = theFilter;
242 //! Get rendering filter.
243 //! @return filter instance.
244 inline const Handle(OpenGl_RenderFilter)& GetRenderFilter() const
246 return myRenderFilter;
249 //! @return applied view matrix.
250 inline const OpenGl_Matrix* ViewMatrix() const { return ViewMatrix_applied; }
252 //! @return applied model structure matrix.
253 inline const OpenGl_Matrix* ModelMatrix() const { return StructureMatrix_applied; }
255 //! Sets and applies current polygon offset.
256 void SetPolygonOffset (int theMode, Standard_ShortReal theFactor, Standard_ShortReal theUnits);
258 //! Returns currently applied polygon offset params.
259 const TEL_POFFSET_PARAM& AppliedPolygonOffset() { return PolygonOffset_applied; }
261 //! @return true if clipping algorithm enabled
262 inline Standard_Boolean IsCullingEnabled() const { return myIsCullingEnabled; }
264 //! Returns a flag whether to redraw the scene using OpenGL rasterization
265 Standard_Boolean ToRedrawGL() const { return myToRedrawGL; }
269 //! Copy content of Back buffer to the Front buffer
270 void copyBackToFront();
272 virtual Standard_Boolean Activate();
274 void redraw1 (const Graphic3d_CView& theCView,
275 const Aspect_CLayer2d& theCUnderLayer,
276 const Aspect_CLayer2d& theCOverLayer,
277 const int theToSwap);
279 void updateMaterial (const int theFlag);
281 void setTextureParams (Handle(OpenGl_Texture)& theTexture,
282 const Handle(Graphic3d_TextureParams)& theParams);
286 //! Result of OpenGL shaders initialization.
287 enum RaytraceInitStatus
294 //! Describes update mode (state).
297 OpenGl_GUM_CHECK, //!< check if geometry update is necessary
298 OpenGl_GUM_PREPARE, //!< collect unchanged objects
299 OpenGl_GUM_UPDATE //!< update raytracing data, rebuild changed objects
302 //! Defines frequently used shader variables.
303 enum ShaderVariableIndex
315 OpenGl_RT_uUnviewMat,
319 OpenGl_RT_uLightAmbnt,
320 OpenGl_RT_uLightCount,
322 OpenGl_RT_uShadEnabled,
323 OpenGl_RT_uReflEnabled,
324 OpenGl_RT_uEnvMapEnable,
334 OpenGl_RT_NbVariables // special field
337 //! Defines texture samplers.
338 enum ShaderSamplerNames
340 OpenGl_RT_SceneNodeInfoTexture = 0,
341 OpenGl_RT_SceneMinPointTexture = 1,
342 OpenGl_RT_SceneMaxPointTexture = 2,
343 OpenGl_RT_SceneTransformTexture = 3,
345 OpenGl_RT_GeometryVertexTexture = 4,
346 OpenGl_RT_GeometryNormalTexture = 5,
347 OpenGl_RT_GeometryTexCrdTexture = 6,
348 OpenGl_RT_GeometryTriangTexture = 7,
350 OpenGl_RT_EnvironmentMapTexture = 8,
352 OpenGl_RT_RaytraceMaterialTexture = 9,
353 OpenGl_RT_RaytraceLightSrcTexture = 10,
355 OpenGl_RT_FSAAInputTexture = 11,
357 OpenGl_RT_OpenGlColorTexture = 12,
358 OpenGl_RT_OpenGlDepthTexture = 13
361 //! Tool class for management of shader sources.
366 //! Creates new uninitialized shader source.
372 //! Creates new shader source from specified file.
373 ShaderSource (const TCollection_AsciiString& theFileName)
375 Load (&theFileName, 1);
380 //! Returns prefix to insert before the source.
381 const TCollection_AsciiString& Prefix() const
386 //! Sets prefix to insert before the source.
387 void SetPrefix (const TCollection_AsciiString& thePrefix)
389 myPrefix = thePrefix;
392 //! Returns shader source combined with prefix.
393 TCollection_AsciiString Source() const;
395 //! Loads shader source from specified files.
396 void Load (const TCollection_AsciiString* theFileNames, const Standard_Integer theCount);
400 TCollection_AsciiString mySource; //!< Source string of the shader object
401 TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
405 //! Default ray-tracing depth.
406 static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
408 //! Default size of traversal stack.
409 static const Standard_Integer THE_DEFAULT_STACK_SIZE = 24;
411 //! Compile-time ray-tracing parameters.
412 struct RaytracingParams
414 //! Actual size of traversal stack in shader program.
415 Standard_Integer StackSize;
417 //! Actual ray-tracing depth (number of ray bounces).
418 Standard_Integer NbBounces;
420 //! Sets light propagation through transparent media.
421 Standard_Boolean TransparentShadows;
423 //! Creates default compile-time ray-tracing parameters.
425 : StackSize (THE_DEFAULT_STACK_SIZE),
426 NbBounces (THE_DEFAULT_NB_BOUNCES),
427 TransparentShadows (Standard_False)
433 protected: //! @name methods related to ray-tracing
435 //! Updates 3D scene geometry for ray-tracing.
436 Standard_Boolean UpdateRaytraceGeometry (GeomUpdateMode theMode);
438 //! Checks to see if the structure is modified.
439 Standard_Boolean CheckRaytraceStructure (const OpenGl_Structure* theStructure);
441 //! Creates ray-tracing material properties.
442 Standard_Boolean CreateMaterial (const OpenGl_AspectFace* theAspect, OpenGl_RaytraceMaterial& theMaterial);
444 //! Updates 3D scene light sources for ray-tracing.
445 Standard_Boolean UpdateRaytraceLightSources (const OpenGl_Mat4& theInvModelView);
447 //! Updates environment map for ray-tracing.
448 Standard_Boolean UpdateRaytraceEnvironmentMap();
450 //! Adds OpenGL structure to ray-traced scene geometry.
451 Standard_Boolean AddRaytraceStructure (const OpenGl_Structure* theStructure, std::set<const OpenGl_Structure*>& theElements);
453 //! Adds OpenGL groups to ray-traced scene geometry.
454 Standard_Boolean AddRaytraceGroups (const OpenGl_Structure* theStructure,
455 const Standard_Integer theStructMatId,
456 const Standard_ShortReal* theTransform);
458 //! Adds OpenGL primitive array to ray-traced scene geometry.
459 OpenGl_TriangleSet* AddRaytracePrimitiveArray (
460 const OpenGl_PrimitiveArray* theArray, int theMatID, const OpenGl_Mat4* theTrans);
462 //! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
463 Standard_Boolean AddRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
464 const OpenGl_PrimitiveArray& theArray,
465 Standard_Integer theOffset,
466 Standard_Integer theCount,
467 Standard_Integer theMatID);
469 //! Adds OpenGL triangle array to ray-traced scene geometry.
470 Standard_Boolean AddRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
471 const Handle(Graphic3d_IndexBuffer)& theIndices,
472 Standard_Integer theOffset,
473 Standard_Integer theCount,
474 Standard_Integer theMatID);
476 //! Adds OpenGL triangle fan array to ray-traced scene geometry.
477 Standard_Boolean AddRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
478 const Handle(Graphic3d_IndexBuffer)& theIndices,
479 Standard_Integer theOffset,
480 Standard_Integer theCount,
481 Standard_Integer theMatID);
483 //! Adds OpenGL triangle strip array to ray-traced scene geometry.
484 Standard_Boolean AddRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
485 const Handle(Graphic3d_IndexBuffer)& theIndices,
486 Standard_Integer theOffset,
487 Standard_Integer theCount,
488 Standard_Integer theMatID);
490 //! Adds OpenGL quadrangle array to ray-traced scene geometry.
491 Standard_Boolean AddRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
492 const Handle(Graphic3d_IndexBuffer)& theIndices,
493 Standard_Integer theOffset,
494 Standard_Integer theCount,
495 Standard_Integer theMatID);
497 //! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
498 Standard_Boolean AddRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
499 const Handle(Graphic3d_IndexBuffer)& theIndices,
500 Standard_Integer theOffset,
501 Standard_Integer theCount,
502 Standard_Integer theMatID);
504 //! Adds OpenGL polygon array to ray-traced scene geometry.
505 Standard_Boolean AddRaytracePolygonArray (OpenGl_TriangleSet& theSet,
506 const Handle(Graphic3d_IndexBuffer)& theIndices,
507 Standard_Integer theOffset,
508 Standard_Integer theCount,
509 Standard_Integer theMatID);
511 //! Loads and compiles shader object from specified source.
512 Handle(OpenGl_ShaderObject) LoadShader (const ShaderSource& theSource, GLenum theType);
514 //! Performs safe exit when shaders initialization fails.
515 Standard_Boolean SafeFailBack (const TCollection_ExtendedString& theMessage);
517 //! Generates shader prefix based on current ray-tracing options.
518 TCollection_AsciiString GenerateShaderPrefix();
520 //! Initializes OpenGL/GLSL shader programs.
521 Standard_Boolean InitRaytraceResources (const Graphic3d_CView& theCView);
523 //! Releases OpenGL/GLSL shader programs.
524 void ReleaseRaytraceResources();
526 //! Uploads ray-trace data to the GPU.
527 Standard_Boolean UploadRaytraceData();
529 //! Resizes OpenGL frame buffers.
530 Standard_Boolean ResizeRaytraceBuffers (const Standard_Integer theSizeX,
531 const Standard_Integer theSizeY);
533 //! Generates viewing rays for corners of screen quad.
534 void UpdateCamera (const OpenGl_Mat4& theOrientation,
535 const OpenGl_Mat4& theViewMapping,
536 OpenGl_Vec3 theOrigins[4],
537 OpenGl_Vec3 theDirects[4],
538 OpenGl_Mat4& theInvModelProj);
540 //! Sets uniform state for the given ray-tracing shader program.
541 Standard_Boolean SetUniformState (const Graphic3d_CView& theCView,
542 const Standard_Integer theSizeX,
543 const Standard_Integer theSizeY,
544 const OpenGl_Vec3* theOrigins,
545 const OpenGl_Vec3* theDirects,
546 const OpenGl_Mat4& theUnviewMat,
547 const Standard_Integer theProgramIndex,
548 Handle(OpenGl_ShaderProgram)& theRaytraceProgram);
550 //! Runs ray-tracing shader programs.
551 Standard_Boolean RunRaytraceShaders (const Graphic3d_CView& theCView,
552 const Standard_Integer theSizeX,
553 const Standard_Integer theSizeY,
554 const OpenGl_Vec3 theOrigins[4],
555 const OpenGl_Vec3 theDirects[4],
556 const OpenGl_Mat4& theUnviewMat,
557 OpenGl_FrameBuffer* theFrameBuffer);
559 //! Redraws the window using OpenGL/GLSL ray-tracing.
560 Standard_Boolean Raytrace (const Graphic3d_CView& theCView,
561 const Standard_Integer theSizeX,
562 const Standard_Integer theSizeY,
563 const Standard_Boolean theToSwap,
564 const Aspect_CLayer2d& theCOverLayer,
565 const Aspect_CLayer2d& theCUnderLayer,
566 OpenGl_FrameBuffer* theFrameBuffer);
568 protected: //! @name fields related to ray-tracing
570 //! Result of shaders initialization.
571 RaytraceInitStatus myComputeInitStatus;
573 //! Is geometry data valid?
574 Standard_Boolean myIsRaytraceDataValid;
576 //! Warning about missing extension GL_ARB_bindless_texture has been displayed?
577 Standard_Boolean myIsRaytraceWarnTextures;
579 //! 3D scene geometry data for ray-tracing.
580 OpenGl_RaytraceGeometry myRaytraceGeometry;
582 //! Radius of bounding sphere of the scene.
583 Standard_ShortReal myRaytraceSceneRadius;
584 //! Scene epsilon to prevent self-intersections.
585 Standard_ShortReal myRaytraceSceneEpsilon;
587 //! Compile-time ray-tracing parameters.
588 RaytracingParams myRaytraceParameters;
590 //! OpenGL/GLSL source of ray-tracing fragment shader.
591 ShaderSource myRaytraceShaderSource;
592 //! OpenGL/GLSL source of adaptive-AA fragment shader.
593 ShaderSource myPostFSAAShaderSource;
595 //! OpenGL/GLSL ray-tracing fragment shader.
596 Handle(OpenGl_ShaderObject) myRaytraceShader;
597 //! OpenGL/GLSL adaptive-AA fragment shader.
598 Handle(OpenGl_ShaderObject) myPostFSAAShader;
600 //! OpenGL/GLSL ray-tracing shader program.
601 Handle(OpenGl_ShaderProgram) myRaytraceProgram;
602 //! OpenGL/GLSL adaptive-AA shader program.
603 Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
605 //! Texture buffer of data records of bottom-level BVH nodes.
606 Handle(OpenGl_TextureBufferArb) mySceneNodeInfoTexture;
607 //! Texture buffer of minimum points of bottom-level BVH nodes.
608 Handle(OpenGl_TextureBufferArb) mySceneMinPointTexture;
609 //! Texture buffer of maximum points of bottom-level BVH nodes.
610 Handle(OpenGl_TextureBufferArb) mySceneMaxPointTexture;
611 //! Texture buffer of transformations of high-level BVH nodes.
612 Handle(OpenGl_TextureBufferArb) mySceneTransformTexture;
614 //! Texture buffer of vertex coords.
615 Handle(OpenGl_TextureBufferArb) myGeometryVertexTexture;
616 //! Texture buffer of vertex normals.
617 Handle(OpenGl_TextureBufferArb) myGeometryNormalTexture;
618 //! Texture buffer of vertex UV coords.
619 Handle(OpenGl_TextureBufferArb) myGeometryTexCrdTexture;
620 //! Texture buffer of triangle indices.
621 Handle(OpenGl_TextureBufferArb) myGeometryTriangTexture;
623 //! Texture buffer of material properties.
624 Handle(OpenGl_TextureBufferArb) myRaytraceMaterialTexture;
625 //! Texture buffer of light source properties.
626 Handle(OpenGl_TextureBufferArb) myRaytraceLightSrcTexture;
628 //! Vertex buffer (VBO) for drawing dummy quad.
629 OpenGl_VertexBuffer myRaytraceScreenQuad;
631 //! Framebuffer (FBO) to perform adaptive FSAA.
632 Handle(OpenGl_FrameBuffer) myRaytraceFBO1;
633 //! Framebuffer (FBO) to perform adaptive FSAA.
634 Handle(OpenGl_FrameBuffer) myRaytraceFBO2;
635 //! Framebuffer (FBO) for pre-raytrace rendering by OpenGL.
636 Handle(OpenGl_FrameBuffer) myOpenGlFBO;
638 //! Framebuffer stores cached main presentation of the view (without presentation of immediate layers).
639 Handle(OpenGl_FrameBuffer) myResultFBO;
641 //! Vertices for full-screen quad rendering.
642 OpenGl_VertexBuffer myFullScreenQuad;
644 //! State of OpenGL view.
645 Standard_Size myViewModificationStatus;
646 //! State of OpenGL layer list.
647 Standard_Size myLayersModificationStatus;
649 //! State of OpenGL structures reflected to ray-tracing.
650 std::map<const OpenGl_Structure*, Standard_Size> myStructureStates;
652 //! PrimitiveArray to TriangleSet map for scene partial update.
653 std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
655 //! Cached locations of frequently used uniform variables.
656 Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
658 //! Graphical ray-tracing filter to filter out all raytracable structures.
659 Handle(OpenGl_RaytraceFilter) myRaytraceFilter;
661 //! Redraw the scene using OpenGL rasterization or ray-tracing?
662 Standard_Boolean myToRedrawGL;
664 protected: //! @name protected fields
666 Handle(OpenGl_PrinterContext) myPrintContext;
667 Handle(OpenGl_View) myView;
668 Handle(OpenGl_LineAttributes) myLineAttribs;
669 Standard_Integer myViewId;
670 Standard_Integer myAntiAliasingMode;
671 Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer)
672 Standard_Boolean myBackBufferRestored;
673 Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data
674 Standard_Boolean myUseZBuffer;
675 Standard_Boolean myUseDepthTest;
676 Standard_Boolean myUseGLLight;
677 Standard_Boolean myIsCullingEnabled; //!< frustum culling flag
679 unsigned int myFrameCounter; //!< redraw counter, for debugging
681 protected: //! @name fields related to status
683 Handle(OpenGl_RenderFilter) myRenderFilter;
684 Handle(OpenGl_Texture) myTextureBound; //!< currently bound texture (managed by OpenGl_AspectFace and OpenGl_View environment texture)
685 const OpenGl_AspectLine *AspectLine_set, *AspectLine_applied;
686 const OpenGl_AspectFace *AspectFace_set, *AspectFace_applied;
687 const OpenGl_AspectMarker *AspectMarker_set, *AspectMarker_applied;
688 const OpenGl_AspectText *AspectText_set, *AspectText_applied;
690 const OpenGl_TextParam *TextParam_set, *TextParam_applied;
692 const OpenGl_Matrix* ViewMatrix_applied;
693 const OpenGl_Matrix* StructureMatrix_applied;
695 OpenGl_Material myMatFront; //!< current front material state (cached to reduce GL context updates)
696 OpenGl_Material myMatBack; //!< current back material state
697 OpenGl_Material myMatTmp; //!< temporary variable
698 TelCullMode myCullingMode; //!< back face culling mode, applied from face aspect
700 OpenGl_Matrix myModelViewMatrix; //!< Model matrix with applied structure transformations
702 TEL_POFFSET_PARAM PolygonOffset_applied; //!< Currently applied polygon offset.
704 OpenGl_AspectFace myAspectFaceHl; //!< Hiddenline aspect
706 public: //! @name type definition
708 DEFINE_STANDARD_RTTI(OpenGl_Workspace)
709 DEFINE_STANDARD_ALLOC
713 #endif // _OpenGl_Workspace_Header