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1127 lines
52 KiB
C++
1127 lines
52 KiB
C++
// Created on: 2011-09-20
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// Created by: Sergey ZERCHANINOV
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// Copyright (c) 2011-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef OpenGl_View_HeaderFile
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#define OpenGl_View_HeaderFile
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#include <Graphic3d_CullingTool.hxx>
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#include <Graphic3d_WorldViewProjState.hxx>
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#include <math_BullardGenerator.hxx>
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#include <OpenGl_FrameBuffer.hxx>
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#include <OpenGl_FrameStatsPrs.hxx>
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#include <OpenGl_GraduatedTrihedron.hxx>
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#include <OpenGl_LayerList.hxx>
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#include <OpenGl_SceneGeometry.hxx>
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#include <OpenGl_Structure.hxx>
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#include <OpenGl_TileSampler.hxx>
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#include <map>
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#include <set>
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class OpenGl_BackgroundArray;
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class OpenGl_DepthPeeling;
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class OpenGl_PBREnvironment;
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struct OpenGl_RaytraceMaterial;
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class OpenGl_ShadowMap;
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class OpenGl_ShadowMapArray;
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class OpenGl_ShaderObject;
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class OpenGl_TextureBuffer;
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class OpenGl_Workspace;
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DEFINE_STANDARD_HANDLE(OpenGl_View,Graphic3d_CView)
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//! Implementation of OpenGl view.
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class OpenGl_View : public Graphic3d_CView
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{
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public:
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//! Constructor.
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Standard_EXPORT OpenGl_View (const Handle(Graphic3d_StructureManager)& theMgr,
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const Handle(OpenGl_GraphicDriver)& theDriver,
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const Handle(OpenGl_Caps)& theCaps,
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OpenGl_StateCounter* theCounter);
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//! Default destructor.
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Standard_EXPORT virtual ~OpenGl_View();
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//! Release OpenGL resources.
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Standard_EXPORT virtual void ReleaseGlResources (const Handle(OpenGl_Context)& theCtx);
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//! Deletes and erases the view.
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Standard_EXPORT virtual void Remove() Standard_OVERRIDE;
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//! @param theDrawToFrontBuffer Advanced option to modify rendering mode:
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//! 1. TRUE. Drawing immediate mode structures directly to the front buffer over the scene image.
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//! Fast, so preferred for interactive work (used by default).
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//! However these extra drawings will be missed in image dump since it is performed from back buffer.
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//! Notice that since no pre-buffering used the V-Sync will be ignored and rendering could be seen
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//! in run-time (in case of slow hardware) and/or tearing may appear.
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//! So this is strongly recommended to draw only simple (fast) structures.
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//! 2. FALSE. Drawing immediate mode structures to the back buffer.
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//! The complete scene is redrawn first, so this mode is slower if scene contains complex data and/or V-Sync
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//! is turned on. But it works in any case and is especially useful for view dump because the dump image is read
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//! from the back buffer.
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//! @return previous mode.
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Standard_EXPORT Standard_Boolean SetImmediateModeDrawToFront (const Standard_Boolean theDrawToFrontBuffer) Standard_OVERRIDE;
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//! Creates and maps rendering window to the view.
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Standard_EXPORT virtual void SetWindow (const Handle(Graphic3d_CView)& theParentVIew,
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const Handle(Aspect_Window)& theWindow,
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const Aspect_RenderingContext theContext) Standard_OVERRIDE;
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//! Returns window associated with the view.
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Standard_EXPORT virtual Handle(Aspect_Window) Window() const Standard_OVERRIDE;
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//! Returns True if the window associated to the view is defined.
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virtual Standard_Boolean IsDefined() const Standard_OVERRIDE
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{ return !myWindow.IsNull(); }
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//! Handle changing size of the rendering window.
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Standard_EXPORT virtual void Resized() Standard_OVERRIDE;
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//! Redraw content of the view.
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Standard_EXPORT virtual void Redraw() Standard_OVERRIDE;
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//! Redraw immediate content of the view.
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Standard_EXPORT virtual void RedrawImmediate() Standard_OVERRIDE;
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//! Marks BVH tree for given priority list as dirty and marks primitive set for rebuild.
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Standard_EXPORT virtual void Invalidate() Standard_OVERRIDE;
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//! Return true if view content cache has been invalidated.
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virtual Standard_Boolean IsInvalidated() Standard_OVERRIDE { return !myBackBufferRestored; }
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//! Dump active rendering buffer into specified memory buffer.
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//! In Ray-Tracing allow to get a raw HDR buffer using Graphic3d_BT_RGB_RayTraceHdrLeft buffer type,
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//! only Left view will be dumped ignoring stereoscopic parameter.
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Standard_EXPORT virtual Standard_Boolean BufferDump (Image_PixMap& theImage,
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const Graphic3d_BufferType& theBufferType) Standard_OVERRIDE;
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//! Dumps the graphical contents of a shadowmap framebuffer into an image.
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//! @param theImage the image to store the shadow map.
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//! @param theLightName [in] name of the light used to generate the shadow map.
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Standard_EXPORT virtual Standard_Boolean ShadowMapDump (Image_PixMap& theImage,
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const TCollection_AsciiString& theLightName) Standard_OVERRIDE;
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//! Marks BVH tree and the set of BVH primitives of correspondent priority list with id theLayerId as outdated.
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Standard_EXPORT virtual void InvalidateBVHData (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
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//! Add a layer to the view.
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//! @param theNewLayerId [in] id of new layer, should be > 0 (negative values are reserved for default layers).
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//! @param theSettings [in] new layer settings
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//! @param theLayerAfter [in] id of layer to append new layer before
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Standard_EXPORT virtual void InsertLayerBefore (const Graphic3d_ZLayerId theLayerId,
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const Graphic3d_ZLayerSettings& theSettings,
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const Graphic3d_ZLayerId theLayerAfter) Standard_OVERRIDE;
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//! Add a layer to the view.
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//! @param theNewLayerId [in] id of new layer, should be > 0 (negative values are reserved for default layers).
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//! @param theSettings [in] new layer settings
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//! @param theLayerBefore [in] id of layer to append new layer after
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Standard_EXPORT virtual void InsertLayerAfter (const Graphic3d_ZLayerId theNewLayerId,
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const Graphic3d_ZLayerSettings& theSettings,
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const Graphic3d_ZLayerId theLayerBefore) Standard_OVERRIDE;
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//! Remove a z layer with the given ID.
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Standard_EXPORT virtual void RemoveZLayer (const Graphic3d_ZLayerId theLayerId) Standard_OVERRIDE;
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//! Sets the settings for a single Z layer of specified view.
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Standard_EXPORT virtual void SetZLayerSettings (const Graphic3d_ZLayerId theLayerId,
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const Graphic3d_ZLayerSettings& theSettings) Standard_OVERRIDE;
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//! Returns the maximum Z layer ID.
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//! First layer ID is Graphic3d_ZLayerId_Default, last ID is ZLayerMax().
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Standard_EXPORT virtual Standard_Integer ZLayerMax() const Standard_OVERRIDE;
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//! Returns the list of layers.
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Standard_EXPORT virtual const NCollection_List<Handle(Graphic3d_Layer)>& Layers() const Standard_OVERRIDE;
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//! Returns layer with given ID or NULL if undefined.
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Standard_EXPORT virtual Handle(Graphic3d_Layer) Layer (const Graphic3d_ZLayerId theLayerId) const Standard_OVERRIDE;
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//! Returns the bounding box of all structures displayed in the view.
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//! If theToIncludeAuxiliary is TRUE, then the boundary box also includes minimum and maximum limits
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//! of graphical elements forming parts of infinite and other auxiliary structures.
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//! @param theToIncludeAuxiliary consider also auxiliary presentations (with infinite flag or with trihedron transformation persistence)
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//! @return computed bounding box
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Standard_EXPORT virtual Bnd_Box MinMaxValues (const Standard_Boolean theToIncludeAuxiliary) const Standard_OVERRIDE;
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//! Returns pointer to an assigned framebuffer object.
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Standard_EXPORT virtual Handle(Standard_Transient) FBO() const Standard_OVERRIDE;
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//! Sets framebuffer object for offscreen rendering.
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Standard_EXPORT virtual void SetFBO (const Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
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//! Generate offscreen FBO in the graphic library.
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//! If not supported on hardware returns NULL.
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Standard_EXPORT virtual Handle(Standard_Transient) FBOCreate (const Standard_Integer theWidth,
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const Standard_Integer theHeight) Standard_OVERRIDE;
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//! Remove offscreen FBO from the graphic library
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Standard_EXPORT virtual void FBORelease (Handle(Standard_Transient)& theFbo) Standard_OVERRIDE;
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//! Read offscreen FBO configuration.
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Standard_EXPORT virtual void FBOGetDimensions (const Handle(Standard_Transient)& theFbo,
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Standard_Integer& theWidth,
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Standard_Integer& theHeight,
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Standard_Integer& theWidthMax,
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Standard_Integer& theHeightMax) Standard_OVERRIDE;
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//! Change offscreen FBO viewport.
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Standard_EXPORT virtual void FBOChangeViewport (const Handle(Standard_Transient)& theFbo,
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const Standard_Integer theWidth,
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const Standard_Integer theHeight) Standard_OVERRIDE;
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//! Returns additional buffers for depth peeling OIT.
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const Handle(OpenGl_DepthPeeling)& DepthPeelingFbos() const { return myDepthPeelingFbos; }
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public:
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//! Returns gradient background fill colors.
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Standard_EXPORT virtual Aspect_GradientBackground GradientBackground() const Standard_OVERRIDE;
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//! Sets gradient background fill colors.
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Standard_EXPORT virtual void SetGradientBackground (const Aspect_GradientBackground& theBackground) Standard_OVERRIDE;
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//! Sets image texture or environment cubemap as background.
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//! @param theTextureMap [in] source to set a background;
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//! should be either Graphic3d_Texture2D or Graphic3d_CubeMap
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//! @param theToUpdatePBREnv [in] defines whether IBL maps will be generated or not
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//! (see GeneratePBREnvironment())
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Standard_EXPORT virtual void SetBackgroundImage (const Handle(Graphic3d_TextureMap)& theTextureMap,
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Standard_Boolean theToUpdatePBREnv = Standard_True) Standard_OVERRIDE;
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//! Sets environment texture for the view.
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Standard_EXPORT virtual void SetTextureEnv (const Handle(Graphic3d_TextureEnv)& theTextureEnv) Standard_OVERRIDE;
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//! Returns background image fill style.
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Standard_EXPORT virtual Aspect_FillMethod BackgroundImageStyle() const Standard_OVERRIDE;
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//! Sets background image fill style.
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Standard_EXPORT virtual void SetBackgroundImageStyle (const Aspect_FillMethod theFillStyle) Standard_OVERRIDE;
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//! Enables or disables IBL (Image Based Lighting) from background cubemap.
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//! Has no effect if PBR is not used.
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//! @param[in] theToEnableIBL enable or disable IBL from background cubemap
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//! @param[in] theToUpdate redraw the view
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Standard_EXPORT virtual void SetImageBasedLighting (Standard_Boolean theToEnableIBL) Standard_OVERRIDE;
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//! Returns number of mipmap levels used in specular IBL map.
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//! 0 if PBR environment is not created.
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Standard_EXPORT unsigned int SpecIBLMapLevels() const;
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//! Returns local camera origin currently set for rendering, might be modified during rendering.
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const gp_XYZ& LocalOrigin() const { return myLocalOrigin; }
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//! Setup local camera origin currently set for rendering.
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Standard_EXPORT void SetLocalOrigin (const gp_XYZ& theOrigin);
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//! Returns list of lights of the view.
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virtual const Handle(Graphic3d_LightSet)& Lights() const Standard_OVERRIDE { return myLights; }
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//! Sets list of lights for the view.
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virtual void SetLights (const Handle(Graphic3d_LightSet)& theLights) Standard_OVERRIDE
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{
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myLights = theLights;
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myCurrLightSourceState = myStateCounter->Increment();
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}
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//! Returns list of clip planes set for the view.
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virtual const Handle(Graphic3d_SequenceOfHClipPlane)& ClipPlanes() const Standard_OVERRIDE { return myClipPlanes; }
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//! Sets list of clip planes for the view.
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virtual void SetClipPlanes (const Handle(Graphic3d_SequenceOfHClipPlane)& thePlanes) Standard_OVERRIDE { myClipPlanes = thePlanes; }
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//! Fill in the dictionary with diagnostic info.
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//! Should be called within rendering thread.
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//!
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//! This API should be used only for user output or for creating automated reports.
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//! The format of returned information (e.g. key-value layout)
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//! is NOT part of this API and can be changed at any time.
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//! Thus application should not parse returned information to weed out specific parameters.
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Standard_EXPORT virtual void DiagnosticInformation (TColStd_IndexedDataMapOfStringString& theDict,
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Graphic3d_DiagnosticInfo theFlags) const Standard_OVERRIDE;
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//! Returns string with statistic performance info.
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Standard_EXPORT virtual TCollection_AsciiString StatisticInformation() const Standard_OVERRIDE;
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//! Fills in the dictionary with statistic performance info.
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Standard_EXPORT virtual void StatisticInformation (TColStd_IndexedDataMapOfStringString& theDict) const Standard_OVERRIDE;
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public:
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//! Returns background color.
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const Quantity_ColorRGBA& BackgroundColor() const { return myBgColor; }
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//! Change graduated trihedron.
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OpenGl_GraduatedTrihedron& ChangeGraduatedTrihedron() { return myGraduatedTrihedron; }
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void SetTextureEnv (const Handle(OpenGl_Context)& theCtx,
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const Handle(Graphic3d_TextureEnv)& theTexture);
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void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
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void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
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void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);
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//! Returns list of OpenGL Z-layers.
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const OpenGl_LayerList& LayerList() const { return myZLayers; }
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//! Returns OpenGL window implementation.
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const Handle(OpenGl_Window)& GlWindow() const { return myWindow; }
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//! Returns OpenGL environment map.
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const Handle(OpenGl_TextureSet)& GlTextureEnv() const { return myTextureEnv; }
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//! Returns selector for BVH tree, providing a possibility to store information
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//! about current view volume and to detect which objects are overlapping it.
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const Graphic3d_CullingTool& BVHTreeSelector() const { return myBVHSelector; }
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//! Returns true if there are immediate structures to display
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bool HasImmediateStructures() const
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{
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return myZLayers.NbImmediateStructures() != 0;
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}
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public: //! @name obsolete Graduated Trihedron functionality
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//! Displays Graduated Trihedron.
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Standard_EXPORT virtual void GraduatedTrihedronDisplay (const Graphic3d_GraduatedTrihedron& theTrihedronData) Standard_OVERRIDE;
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//! Erases Graduated Trihedron.
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Standard_EXPORT virtual void GraduatedTrihedronErase() Standard_OVERRIDE;
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//! Displays Grid.
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Standard_EXPORT virtual void GridDisplay (const Aspect_GridParams& theGridParams) Standard_OVERRIDE;
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//! Erases Grid.
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Standard_EXPORT virtual void GridErase() Standard_OVERRIDE;
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//! Sets minimum and maximum points of scene bounding box for Graduated Trihedron stored in graphic view object.
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//! @param theMin [in] the minimum point of scene.
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//! @param theMax [in] the maximum point of scene.
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Standard_EXPORT virtual void GraduatedTrihedronMinMaxValues (const Graphic3d_Vec3 theMin, const Graphic3d_Vec3 theMax) Standard_OVERRIDE;
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protected: //! @name Internal methods for managing GL resources
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//! Initializes OpenGl resource for environment texture.
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void initTextureEnv (const Handle(OpenGl_Context)& theContext);
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protected: //! @name low-level redrawing sub-routines
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//! Prepare frame buffers for rendering.
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Standard_EXPORT virtual bool prepareFrameBuffers (Graphic3d_Camera::Projection& theProj);
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//! Redraws view for the given monographic camera projection, or left/right eye.
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Standard_EXPORT virtual void redraw (const Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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OpenGl_FrameBuffer* theOitAccumFbo);
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//! Redraws view for the given monographic camera projection, or left/right eye.
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//!
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//! Method will blit snapshot containing main scene (myMainSceneFbos or BackBuffer)
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//! into presentation buffer (myMainSceneFbos -> offscreen FBO or
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//! myMainSceneFbos -> BackBuffer or BackBuffer -> FrontBuffer),
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//! and redraw immediate structures on top.
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//!
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//! When scene caching is disabled (myTransientDrawToFront, no double buffer in window, etc.),
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//! the first step (blitting) will be skipped.
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//!
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//! @return false if immediate structures has been rendered directly into FrontBuffer
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//! and Buffer Swap should not be called.
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Standard_EXPORT virtual bool redrawImmediate (const Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadFbo,
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OpenGl_FrameBuffer* theDrawFbo,
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OpenGl_FrameBuffer* theOitAccumFbo,
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const Standard_Boolean theIsPartialUpdate = Standard_False);
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//! Blit subviews into this view.
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Standard_EXPORT bool blitSubviews (const Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theDrawFbo);
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//! Blit image from/to specified buffers.
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Standard_EXPORT bool blitBuffers (OpenGl_FrameBuffer* theReadFbo,
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OpenGl_FrameBuffer* theDrawFbo,
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const Standard_Boolean theToFlip = Standard_False);
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//! Setup default FBO.
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Standard_EXPORT void bindDefaultFbo (OpenGl_FrameBuffer* theCustomFbo = NULL);
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protected: //! @name Rendering of GL graphics (with prepared drawing buffer).
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//! Renders the graphical contents of the view into the prepared shadowmap framebuffer.
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//! @param theShadowMap [in] the framebuffer for rendering shadowmap.
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Standard_EXPORT virtual void renderShadowMap (const Handle(OpenGl_ShadowMap)& theShadowMap);
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//! Renders the graphical contents of the view into the prepared window or framebuffer.
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//! @param theProjection [in] the projection that should be used for rendering.
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//! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
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//! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
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//! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
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Standard_EXPORT virtual void render (Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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OpenGl_FrameBuffer* theOitAccumFbo,
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const Standard_Boolean theToDrawImmediate);
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//! Renders the graphical scene.
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//! @param theProjection [in] the projection that is used for rendering.
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//! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
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//! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
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//! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
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Standard_EXPORT virtual void renderScene (Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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OpenGl_FrameBuffer* theOitAccumFbo,
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const Standard_Boolean theToDrawImmediate);
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//! Draw background (gradient / image / cubemap)
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Standard_EXPORT virtual void drawBackground (const Handle(OpenGl_Workspace)& theWorkspace,
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Graphic3d_Camera::Projection theProjection);
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//! Render set of structures presented in the view.
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//! @param theProjection [in] the projection that is used for rendering.
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//! @param theReadDrawFbo [in] the framebuffer for rendering graphics.
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//! @param theOitAccumFbo [in] the framebuffer for accumulating color and coverage for OIT process.
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//! @param theToDrawImmediate [in] the flag indicates whether the rendering performs in immediate mode.
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Standard_EXPORT virtual void renderStructs (Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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OpenGl_FrameBuffer* theOitAccumFbo,
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const Standard_Boolean theToDrawImmediate);
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//! Renders grid
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Standard_EXPORT void renderGrid();
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//! Renders trihedron.
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void renderTrihedron (const Handle(OpenGl_Workspace) &theWorkspace);
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//! Renders frame statistics.
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void renderFrameStats();
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private:
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//! Adds the structure to display lists of the view.
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Standard_EXPORT virtual void displayStructure (const Handle(Graphic3d_CStructure)& theStructure,
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const Graphic3d_DisplayPriority thePriority) Standard_OVERRIDE;
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//! Erases the structure from display lists of the view.
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Standard_EXPORT virtual void eraseStructure (const Handle(Graphic3d_CStructure)& theStructure) Standard_OVERRIDE;
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//! Change Z layer of a structure already presented in view.
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Standard_EXPORT virtual void changeZLayer (const Handle(Graphic3d_CStructure)& theCStructure,
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const Graphic3d_ZLayerId theNewLayerId) Standard_OVERRIDE;
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//! Changes the priority of a structure within its Z layer in the specified view.
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Standard_EXPORT virtual void changePriority (const Handle(Graphic3d_CStructure)& theCStructure,
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const Graphic3d_DisplayPriority theNewPriority) Standard_OVERRIDE;
|
|
|
|
private:
|
|
|
|
//! Release sRGB resources (frame-buffers, textures, etc.).
|
|
void releaseSrgbResources (const Handle(OpenGl_Context)& theCtx);
|
|
|
|
//! Copy content of Back buffer to the Front buffer.
|
|
bool copyBackToFront();
|
|
|
|
//! Initialize blit quad.
|
|
OpenGl_VertexBuffer* initBlitQuad (const Standard_Boolean theToFlip);
|
|
|
|
//! Blend together views pair into stereo image.
|
|
void drawStereoPair (OpenGl_FrameBuffer* theDrawFbo);
|
|
|
|
//! Check and update OIT compatibility with current OpenGL context's state.
|
|
bool checkOitCompatibility (const Handle(OpenGl_Context)& theGlContext,
|
|
const Standard_Boolean theMSAA);
|
|
|
|
protected:
|
|
|
|
OpenGl_GraphicDriver* myDriver;
|
|
Handle(OpenGl_Window) myWindow;
|
|
Handle(OpenGl_Workspace) myWorkspace;
|
|
Handle(OpenGl_Caps) myCaps;
|
|
Standard_Boolean myWasRedrawnGL;
|
|
|
|
Handle(Graphic3d_SequenceOfHClipPlane) myClipPlanes;
|
|
gp_XYZ myLocalOrigin;
|
|
Handle(OpenGl_FrameBuffer) myFBO;
|
|
Standard_Boolean myToShowGradTrihedron;
|
|
Standard_Boolean myToShowGrid;
|
|
Graphic3d_GraduatedTrihedron myGTrihedronData;
|
|
Aspect_GridParams myGridParams;
|
|
|
|
Handle(Graphic3d_LightSet) myNoShadingLight;
|
|
Handle(Graphic3d_LightSet) myLights;
|
|
OpenGl_LayerList myZLayers; //!< main list of displayed structure, sorted by layers
|
|
|
|
Graphic3d_WorldViewProjState myWorldViewProjState; //!< camera modification state
|
|
OpenGl_StateCounter* myStateCounter;
|
|
Standard_Size myCurrLightSourceState;
|
|
Standard_Size myLightsRevision;
|
|
|
|
typedef std::pair<Standard_Size, Standard_Size> StateInfo;
|
|
|
|
StateInfo myLastOrientationState;
|
|
StateInfo myLastViewMappingState;
|
|
StateInfo myLastLightSourceState;
|
|
|
|
//! Is needed for selection of overlapping objects and storage of the current view volume
|
|
Graphic3d_CullingTool myBVHSelector;
|
|
|
|
OpenGl_GraduatedTrihedron myGraduatedTrihedron;
|
|
OpenGl_FrameStatsPrs myFrameStatsPrs;
|
|
|
|
//! Framebuffers for OpenGL output.
|
|
Handle(OpenGl_FrameBuffer) myOpenGlFBO;
|
|
Handle(OpenGl_FrameBuffer) myOpenGlFBO2;
|
|
|
|
protected: //! @name Rendering properties
|
|
|
|
//! Two framebuffers (left and right views) store cached main presentation
|
|
//! of the view (without presentation of immediate layers).
|
|
Standard_Integer mySRgbState; //!< track sRGB state
|
|
GLint myFboColorFormat; //!< sized format for color attachments
|
|
GLint myFboDepthFormat; //!< sized format for depth-stencil attachments
|
|
OpenGl_ColorFormats myFboOitColorConfig; //!< selected color format configuration for OIT color attachments
|
|
Handle(OpenGl_FrameBuffer) myMainSceneFbos[2];
|
|
Handle(OpenGl_FrameBuffer) myMainSceneFbosOit[2]; //!< Additional buffers for transparent draw of main layer.
|
|
Handle(OpenGl_FrameBuffer) myImmediateSceneFbos[2]; //!< Additional buffers for immediate layer in stereo mode.
|
|
Handle(OpenGl_FrameBuffer) myImmediateSceneFbosOit[2]; //!< Additional buffers for transparency draw of immediate layer.
|
|
Handle(OpenGl_FrameBuffer) myXrSceneFbo; //!< additional FBO (without MSAA) for submitting to XR
|
|
Handle(OpenGl_DepthPeeling) myDepthPeelingFbos; //!< additional buffers for depth peeling
|
|
Handle(OpenGl_ShadowMapArray) myShadowMaps; //!< additional FBOs for shadow map rendering
|
|
OpenGl_VertexBuffer myFullScreenQuad; //!< Vertices for full-screen quad rendering.
|
|
OpenGl_VertexBuffer myFullScreenQuadFlip;
|
|
Standard_Boolean myToFlipOutput; //!< Flag to draw result image upside-down
|
|
unsigned int myFrameCounter; //!< redraw counter, for debugging
|
|
Standard_Boolean myHasFboBlit; //!< disable FBOs on failure
|
|
Standard_Boolean myToDisableOIT; //!< disable OIT on failure
|
|
Standard_Boolean myToDisableOITMSAA; //!< disable OIT with MSAA on failure
|
|
Standard_Boolean myToDisableMSAA; //!< disable MSAA after failure
|
|
Standard_Boolean myTransientDrawToFront; //!< optimization flag for immediate mode (to render directly to the front buffer)
|
|
Standard_Boolean myBackBufferRestored;
|
|
Standard_Boolean myIsImmediateDrawn; //!< flag indicates that immediate mode buffer contains some data
|
|
|
|
protected: //! @name Background parameters
|
|
|
|
OpenGl_Aspects* myTextureParams; //!< Stores texture and its parameters for textured background
|
|
OpenGl_Aspects* myCubeMapParams; //!< Stores cubemap and its parameters for cubemap background
|
|
OpenGl_Aspects* myColoredQuadParams; //!< Stores parameters for gradient (corner mode) background
|
|
OpenGl_BackgroundArray* myBackgrounds[Graphic3d_TypeOfBackground_NB]; //!< Array of primitive arrays of different background types
|
|
Handle(OpenGl_TextureSet) myTextureEnv;
|
|
Handle(OpenGl_Texture) mySkydomeTexture;
|
|
|
|
protected: //! @name methods related to skydome background
|
|
|
|
//! Generates skydome cubemap.
|
|
Standard_EXPORT void updateSkydomeBg (const Handle(OpenGl_Context)& theCtx);
|
|
|
|
protected: //! @name methods related to PBR
|
|
|
|
//! Checks whether PBR is available.
|
|
Standard_EXPORT Standard_Boolean checkPBRAvailability() const;
|
|
|
|
//! Generates IBL maps used in PBR pipeline.
|
|
//! If background cubemap is not set clears all IBL maps.
|
|
Standard_EXPORT void updatePBREnvironment (const Handle(OpenGl_Context)& theCtx);
|
|
|
|
protected: //! @name fields and types related to PBR
|
|
|
|
//! State of PBR environment.
|
|
enum PBREnvironmentState
|
|
{
|
|
OpenGl_PBREnvState_NONEXISTENT,
|
|
OpenGl_PBREnvState_UNAVAILABLE, // indicates failed try to create PBR environment
|
|
OpenGl_PBREnvState_CREATED
|
|
};
|
|
|
|
Handle(OpenGl_PBREnvironment) myPBREnvironment; //!< manager of IBL maps used in PBR pipeline
|
|
PBREnvironmentState myPBREnvState; //!< state of PBR environment
|
|
Standard_Boolean myPBREnvRequest; //!< update PBR environment
|
|
|
|
protected: //! @name data types related to ray-tracing
|
|
|
|
//! Result of OpenGL shaders initialization.
|
|
enum RaytraceInitStatus
|
|
{
|
|
OpenGl_RT_NONE,
|
|
OpenGl_RT_INIT,
|
|
OpenGl_RT_FAIL
|
|
};
|
|
|
|
//! Describes update mode (state).
|
|
enum RaytraceUpdateMode
|
|
{
|
|
OpenGl_GUM_CHECK, //!< check geometry state
|
|
OpenGl_GUM_PREPARE, //!< collect unchanged objects
|
|
OpenGl_GUM_REBUILD //!< rebuild changed and new objects
|
|
};
|
|
|
|
//! Defines frequently used shader variables.
|
|
enum ShaderVariableIndex
|
|
{
|
|
OpenGl_RT_aPosition,
|
|
|
|
// camera position
|
|
OpenGl_RT_uOriginLT,
|
|
OpenGl_RT_uOriginLB,
|
|
OpenGl_RT_uOriginRT,
|
|
OpenGl_RT_uOriginRB,
|
|
OpenGl_RT_uDirectLT,
|
|
OpenGl_RT_uDirectLB,
|
|
OpenGl_RT_uDirectRT,
|
|
OpenGl_RT_uDirectRB,
|
|
OpenGl_RT_uViewPrMat,
|
|
OpenGl_RT_uUnviewMat,
|
|
|
|
// 3D scene params
|
|
OpenGl_RT_uSceneRad,
|
|
OpenGl_RT_uSceneEps,
|
|
OpenGl_RT_uLightAmbnt,
|
|
OpenGl_RT_uLightCount,
|
|
|
|
// background params
|
|
OpenGl_RT_uBackColorTop,
|
|
OpenGl_RT_uBackColorBot,
|
|
|
|
// ray-tracing params
|
|
OpenGl_RT_uShadowsEnabled,
|
|
OpenGl_RT_uReflectEnabled,
|
|
OpenGl_RT_uEnvMapEnabled,
|
|
OpenGl_RT_uEnvMapForBack,
|
|
OpenGl_RT_uTexSamplersArray,
|
|
OpenGl_RT_uBlockedRngEnabled,
|
|
|
|
// size of render window
|
|
OpenGl_RT_uWinSizeX,
|
|
OpenGl_RT_uWinSizeY,
|
|
|
|
// sampled frame params
|
|
OpenGl_RT_uAccumSamples,
|
|
OpenGl_RT_uFrameRndSeed,
|
|
|
|
// adaptive FSAA params
|
|
OpenGl_RT_uFsaaOffset,
|
|
OpenGl_RT_uSamples,
|
|
|
|
// images used by ISS mode
|
|
OpenGl_RT_uRenderImage,
|
|
OpenGl_RT_uTilesImage,
|
|
OpenGl_RT_uOffsetImage,
|
|
OpenGl_RT_uTileSize,
|
|
OpenGl_RT_uVarianceScaleFactor,
|
|
|
|
// maximum radiance value
|
|
OpenGl_RT_uMaxRadiance,
|
|
|
|
OpenGl_RT_NbVariables // special field
|
|
};
|
|
|
|
//! Defines OpenGL image samplers.
|
|
enum ShaderImageNames
|
|
{
|
|
OpenGl_RT_OutputImage = 0,
|
|
OpenGl_RT_VisualErrorImage = 1,
|
|
OpenGl_RT_TileOffsetsImage = 2,
|
|
OpenGl_RT_TileSamplesImage = 3
|
|
};
|
|
|
|
//! Tool class for management of shader sources.
|
|
class ShaderSource
|
|
{
|
|
public:
|
|
|
|
//! Default shader prefix - empty string.
|
|
static const TCollection_AsciiString EMPTY_PREFIX;
|
|
|
|
//! Creates new uninitialized shader source.
|
|
ShaderSource()
|
|
{
|
|
//
|
|
}
|
|
|
|
public:
|
|
|
|
//! Returns error description in case of load fail.
|
|
const TCollection_AsciiString& ErrorDescription() const
|
|
{
|
|
return myError;
|
|
}
|
|
|
|
//! Returns prefix to insert before the source.
|
|
const TCollection_AsciiString& Prefix() const
|
|
{
|
|
return myPrefix;
|
|
}
|
|
|
|
//! Sets prefix to insert before the source.
|
|
void SetPrefix (const TCollection_AsciiString& thePrefix)
|
|
{
|
|
myPrefix = thePrefix;
|
|
}
|
|
|
|
//! Returns shader source combined with prefix.
|
|
TCollection_AsciiString Source (const Handle(OpenGl_Context)& theCtx,
|
|
const GLenum theType) const;
|
|
|
|
//! Loads shader source from specified files.
|
|
Standard_Boolean LoadFromFiles (const TCollection_AsciiString* theFileNames, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
|
|
|
|
//! Loads shader source from specified strings.
|
|
Standard_Boolean LoadFromStrings (const TCollection_AsciiString* theStrings, const TCollection_AsciiString& thePrefix = EMPTY_PREFIX);
|
|
|
|
private:
|
|
|
|
TCollection_AsciiString mySource; //!< Source string of the shader object
|
|
TCollection_AsciiString myPrefix; //!< Prefix to insert before the source
|
|
TCollection_AsciiString myError; //!< error state
|
|
|
|
};
|
|
|
|
//! Default ray-tracing depth.
|
|
static const Standard_Integer THE_DEFAULT_NB_BOUNCES = 3;
|
|
|
|
//! Default size of traversal stack.
|
|
static const Standard_Integer THE_DEFAULT_STACK_SIZE = 10;
|
|
|
|
//! Compile-time ray-tracing parameters.
|
|
struct RaytracingParams
|
|
{
|
|
//! Actual size of traversal stack in shader program.
|
|
Standard_Integer StackSize;
|
|
|
|
//! Actual ray-tracing depth (number of ray bounces).
|
|
Standard_Integer NbBounces;
|
|
|
|
//! Define depth computation
|
|
Standard_Boolean IsZeroToOneDepth;
|
|
|
|
//! Enables/disables light propagation through transparent media.
|
|
Standard_Boolean TransparentShadows;
|
|
|
|
//! Enables/disables global illumination (GI) effects.
|
|
Standard_Boolean GlobalIllumination;
|
|
|
|
//! Enables/disables the use of OpenGL bindless textures.
|
|
Standard_Boolean UseBindlessTextures;
|
|
|
|
//! Enables/disables two-sided BSDF models instead of one-sided.
|
|
Standard_Boolean TwoSidedBsdfModels;
|
|
|
|
//! Enables/disables adaptive screen sampling for path tracing.
|
|
Standard_Boolean AdaptiveScreenSampling;
|
|
|
|
//! Enables/disables 1-pass atomic mode for AdaptiveScreenSampling.
|
|
Standard_Boolean AdaptiveScreenSamplingAtomic;
|
|
|
|
//! Enables/disables environment map for background.
|
|
Standard_Boolean UseEnvMapForBackground;
|
|
|
|
//! Enables/disables normal map ignoring during path tracing.
|
|
Standard_Boolean ToIgnoreNormalMap;
|
|
|
|
//! Maximum radiance value used for clamping radiance estimation.
|
|
Standard_ShortReal RadianceClampingValue;
|
|
|
|
//! Enables/disables depth-of-field effect (path tracing, perspective camera).
|
|
Standard_Boolean DepthOfField;
|
|
|
|
//! Enables/disables cubemap background.
|
|
Standard_Boolean CubemapForBack;
|
|
|
|
//! Tone mapping method for path tracing.
|
|
Graphic3d_ToneMappingMethod ToneMappingMethod;
|
|
|
|
//! Creates default compile-time ray-tracing parameters.
|
|
RaytracingParams()
|
|
: StackSize (THE_DEFAULT_STACK_SIZE),
|
|
NbBounces (THE_DEFAULT_NB_BOUNCES),
|
|
IsZeroToOneDepth (Standard_False),
|
|
TransparentShadows (Standard_False),
|
|
GlobalIllumination (Standard_False),
|
|
UseBindlessTextures (Standard_False),
|
|
TwoSidedBsdfModels (Standard_False),
|
|
AdaptiveScreenSampling (Standard_False),
|
|
AdaptiveScreenSamplingAtomic (Standard_False),
|
|
UseEnvMapForBackground (Standard_False),
|
|
ToIgnoreNormalMap (Standard_False),
|
|
RadianceClampingValue (30.0),
|
|
DepthOfField (Standard_False),
|
|
CubemapForBack (Standard_False),
|
|
ToneMappingMethod (Graphic3d_ToneMappingMethod_Disabled) { }
|
|
};
|
|
|
|
//! Describes state of OpenGL structure.
|
|
struct StructState
|
|
{
|
|
Standard_Size StructureState;
|
|
Standard_Size InstancedState;
|
|
|
|
//! Creates new structure state.
|
|
StructState (const Standard_Size theStructureState = 0,
|
|
const Standard_Size theInstancedState = 0)
|
|
: StructureState (theStructureState),
|
|
InstancedState (theInstancedState)
|
|
{
|
|
//
|
|
}
|
|
|
|
//! Creates new structure state.
|
|
StructState (const OpenGl_Structure* theStructure)
|
|
{
|
|
StructureState = theStructure->ModificationState();
|
|
|
|
InstancedState = theStructure->InstancedStructure() != NULL ?
|
|
theStructure->InstancedStructure()->ModificationState() : 0;
|
|
}
|
|
};
|
|
|
|
protected: //! @name methods related to ray-tracing
|
|
|
|
//! Updates 3D scene geometry for ray-tracing.
|
|
Standard_Boolean updateRaytraceGeometry (const RaytraceUpdateMode theMode,
|
|
const Standard_Integer theViewId,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Updates 3D scene light sources for ray-tracing.
|
|
Standard_Boolean updateRaytraceLightSources (const OpenGl_Mat4& theInvModelView, const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Checks to see if the OpenGL structure is modified.
|
|
Standard_Boolean toUpdateStructure (const OpenGl_Structure* theStructure);
|
|
|
|
//! Adds OpenGL structure to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceStructure (const OpenGl_Structure* theStructure,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Adds OpenGL groups to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceGroups (const OpenGl_Structure* theStructure,
|
|
const OpenGl_RaytraceMaterial& theStructMat,
|
|
const Handle(TopLoc_Datum3D)& theTrsf,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Creates ray-tracing material properties.
|
|
OpenGl_RaytraceMaterial convertMaterial (const OpenGl_Aspects* theAspect,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Adds OpenGL primitive array to ray-traced scene geometry.
|
|
Handle(OpenGl_TriangleSet) addRaytracePrimitiveArray (const OpenGl_PrimitiveArray* theArray,
|
|
const Standard_Integer theMatID,
|
|
const OpenGl_Mat4* theTrans);
|
|
|
|
//! Adds vertex indices from OpenGL primitive array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceVertexIndices (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const OpenGl_PrimitiveArray& theArray);
|
|
|
|
//! Adds OpenGL triangle array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceTriangleArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Adds OpenGL triangle fan array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceTriangleFanArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Adds OpenGL triangle strip array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceTriangleStripArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Adds OpenGL quadrangle array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceQuadrangleArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Adds OpenGL quadrangle strip array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytraceQuadrangleStripArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Adds OpenGL polygon array to ray-traced scene geometry.
|
|
Standard_Boolean addRaytracePolygonArray (OpenGl_TriangleSet& theSet,
|
|
const Standard_Integer theMatID,
|
|
const Standard_Integer theCount,
|
|
const Standard_Integer theOffset,
|
|
const Handle(Graphic3d_IndexBuffer)& theIndices);
|
|
|
|
//! Uploads ray-trace data to the GPU.
|
|
Standard_Boolean uploadRaytraceData (const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Generates shader prefix based on current ray-tracing options.
|
|
TCollection_AsciiString generateShaderPrefix (const Handle(OpenGl_Context)& theGlContext) const;
|
|
|
|
//! Performs safe exit when shaders initialization fails.
|
|
Standard_Boolean safeFailBack (const TCollection_ExtendedString& theMessage,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Loads and compiles shader object from specified source.
|
|
Handle(OpenGl_ShaderObject) initShader (const GLenum theType,
|
|
const ShaderSource& theSource,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Creates shader program from the given vertex and fragment shaders.
|
|
Handle(OpenGl_ShaderProgram) initProgram (const Handle(OpenGl_Context)& theGlContext,
|
|
const Handle(OpenGl_ShaderObject)& theVertShader,
|
|
const Handle(OpenGl_ShaderObject)& theFragShader,
|
|
const TCollection_AsciiString& theName);
|
|
|
|
//! Initializes OpenGL/GLSL shader programs.
|
|
Standard_Boolean initRaytraceResources (const Standard_Integer theSizeX,
|
|
const Standard_Integer theSizeY,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Releases OpenGL/GLSL shader programs.
|
|
void releaseRaytraceResources (const Handle(OpenGl_Context)& theGlContext,
|
|
const Standard_Boolean theToRebuild = Standard_False);
|
|
|
|
//! Updates auxiliary OpenGL frame buffers.
|
|
Standard_Boolean updateRaytraceBuffers (const Standard_Integer theSizeX,
|
|
const Standard_Integer theSizeY,
|
|
const Handle(OpenGl_Context)& theGlContext);
|
|
|
|
//! Generates viewing rays for corners of screen quad.
|
|
//! (ray tracing; path tracing for orthographic camera)
|
|
void updateCamera (const OpenGl_Mat4& theOrientation,
|
|
const OpenGl_Mat4& theViewMapping,
|
|
OpenGl_Vec3* theOrigins,
|
|
OpenGl_Vec3* theDirects,
|
|
OpenGl_Mat4& theView,
|
|
OpenGl_Mat4& theUnView);
|
|
|
|
//! Generate viewing rays (path tracing, perspective camera).
|
|
void updatePerspCameraPT(const OpenGl_Mat4& theOrientation,
|
|
const OpenGl_Mat4& theViewMapping,
|
|
Graphic3d_Camera::Projection theProjection,
|
|
OpenGl_Mat4& theViewPr,
|
|
OpenGl_Mat4& theUnview,
|
|
const int theWinSizeX,
|
|
const int theWinSizeY);
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//! Binds ray-trace textures to corresponding texture units.
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void bindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext,
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int theStereoView);
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//! Unbinds ray-trace textures from corresponding texture unit.
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void unbindRaytraceTextures (const Handle(OpenGl_Context)& theGlContext);
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//! Sets uniform state for the given ray-tracing shader program.
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Standard_Boolean setUniformState (const Standard_Integer theProgramId,
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const Standard_Integer theSizeX,
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const Standard_Integer theSizeY,
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Graphic3d_Camera::Projection theProjection,
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const Handle(OpenGl_Context)& theGlContext);
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//! Runs ray-tracing shader programs.
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Standard_Boolean runRaytraceShaders (const Standard_Integer theSizeX,
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const Standard_Integer theSizeY,
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Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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const Handle(OpenGl_Context)& theGlContext);
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//! Runs classical (Whitted-style) ray-tracing kernel.
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Standard_Boolean runRaytrace (const Standard_Integer theSizeX,
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const Standard_Integer theSizeY,
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Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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const Handle(OpenGl_Context)& theGlContext);
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//! Runs path tracing (global illumination) kernel.
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Standard_Boolean runPathtrace (const Standard_Integer theSizeX,
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const Standard_Integer theSizeY,
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Graphic3d_Camera::Projection theProjection,
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const Handle(OpenGl_Context)& theGlContext);
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//! Runs path tracing (global illumination) kernel.
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Standard_Boolean runPathtraceOut (Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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const Handle(OpenGl_Context)& theGlContext);
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//! Redraws the window using OpenGL/GLSL ray-tracing or path tracing.
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Standard_Boolean raytrace (const Standard_Integer theSizeX,
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const Standard_Integer theSizeY,
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Graphic3d_Camera::Projection theProjection,
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OpenGl_FrameBuffer* theReadDrawFbo,
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const Handle(OpenGl_Context)& theGlContext);
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protected: //! @name fields related to ray-tracing
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//! Result of RT/PT shaders initialization.
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RaytraceInitStatus myRaytraceInitStatus;
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//! Is ray-tracing geometry data valid?
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Standard_Boolean myIsRaytraceDataValid;
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//! True if warning about missing extension GL_ARB_bindless_texture has been displayed.
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Standard_Boolean myIsRaytraceWarnTextures;
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//! 3D scene geometry data for ray-tracing.
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OpenGl_RaytraceGeometry myRaytraceGeometry;
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//! Builder for triangle set.
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opencascade::handle<BVH_Builder<Standard_ShortReal, 3> > myRaytraceBVHBuilder;
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//! Compile-time ray-tracing parameters.
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RaytracingParams myRaytraceParameters;
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//! Radius of bounding sphere of the scene.
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Standard_ShortReal myRaytraceSceneRadius;
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//! Scene epsilon to prevent self-intersections.
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Standard_ShortReal myRaytraceSceneEpsilon;
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//! OpenGL/GLSL source of ray-tracing fragment shader.
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ShaderSource myRaytraceShaderSource;
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//! OpenGL/GLSL source of adaptive-AA fragment shader.
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ShaderSource myPostFSAAShaderSource;
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//! OpenGL/GLSL source of RT/PT display fragment shader.
|
|
ShaderSource myOutImageShaderSource;
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|
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//! OpenGL/GLSL ray-tracing fragment shader.
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Handle(OpenGl_ShaderObject) myRaytraceShader;
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//! OpenGL/GLSL adaptive-AA fragment shader.
|
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Handle(OpenGl_ShaderObject) myPostFSAAShader;
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//! OpenGL/GLSL ray-tracing display fragment shader.
|
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Handle(OpenGl_ShaderObject) myOutImageShader;
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|
|
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//! OpenGL/GLSL ray-tracing shader program.
|
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Handle(OpenGl_ShaderProgram) myRaytraceProgram;
|
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//! OpenGL/GLSL adaptive-AA shader program.
|
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Handle(OpenGl_ShaderProgram) myPostFSAAProgram;
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//! OpenGL/GLSL program for displaying texture.
|
|
Handle(OpenGl_ShaderProgram) myOutImageProgram;
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|
|
|
//! Texture buffer of data records of bottom-level BVH nodes.
|
|
Handle(OpenGl_TextureBuffer) mySceneNodeInfoTexture;
|
|
//! Texture buffer of minimum points of bottom-level BVH nodes.
|
|
Handle(OpenGl_TextureBuffer) mySceneMinPointTexture;
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|
//! Texture buffer of maximum points of bottom-level BVH nodes.
|
|
Handle(OpenGl_TextureBuffer) mySceneMaxPointTexture;
|
|
//! Texture buffer of transformations of high-level BVH nodes.
|
|
Handle(OpenGl_TextureBuffer) mySceneTransformTexture;
|
|
|
|
//! Texture buffer of vertex coords.
|
|
Handle(OpenGl_TextureBuffer) myGeometryVertexTexture;
|
|
//! Texture buffer of vertex normals.
|
|
Handle(OpenGl_TextureBuffer) myGeometryNormalTexture;
|
|
//! Texture buffer of vertex UV coords.
|
|
Handle(OpenGl_TextureBuffer) myGeometryTexCrdTexture;
|
|
//! Texture buffer of triangle indices.
|
|
Handle(OpenGl_TextureBuffer) myGeometryTriangTexture;
|
|
|
|
//! Texture buffer of material properties.
|
|
Handle(OpenGl_TextureBuffer) myRaytraceMaterialTexture;
|
|
//! Texture buffer of light source properties.
|
|
Handle(OpenGl_TextureBuffer) myRaytraceLightSrcTexture;
|
|
|
|
//! 1st framebuffer (FBO) to perform adaptive FSAA.
|
|
//! Used in compatibility mode (no adaptive sampling).
|
|
Handle(OpenGl_FrameBuffer) myRaytraceFBO1[2];
|
|
//! 2nd framebuffer (FBO) to perform adaptive FSAA.
|
|
//! Used in compatibility mode (no adaptive sampling).
|
|
Handle(OpenGl_FrameBuffer) myRaytraceFBO2[2];
|
|
|
|
//! Output textures (2 textures are used in stereo mode).
|
|
//! Used if adaptive screen sampling is activated.
|
|
Handle(OpenGl_Texture) myRaytraceOutputTexture[2];
|
|
|
|
//! Texture containing per-tile visual error estimation (2 textures are used in stereo mode).
|
|
//! Used if adaptive screen sampling is activated.
|
|
Handle(OpenGl_Texture) myRaytraceVisualErrorTexture[2];
|
|
//! Texture containing offsets of sampled screen tiles (2 textures are used in stereo mode).
|
|
//! Used if adaptive screen sampling is activated.
|
|
Handle(OpenGl_Texture) myRaytraceTileOffsetsTexture[2];
|
|
//! Texture containing amount of extra per-tile samples (2 textures are used in stereo mode).
|
|
//! Used if adaptive screen sampling is activated.
|
|
Handle(OpenGl_Texture) myRaytraceTileSamplesTexture[2];
|
|
|
|
//! Vertex buffer (VBO) for drawing dummy quad.
|
|
OpenGl_VertexBuffer myRaytraceScreenQuad;
|
|
|
|
//! Cached locations of frequently used uniform variables.
|
|
Standard_Integer myUniformLocations[2][OpenGl_RT_NbVariables];
|
|
|
|
//! State of OpenGL structures reflected to ray-tracing.
|
|
std::map<const OpenGl_Structure*, StructState> myStructureStates;
|
|
|
|
//! PrimitiveArray to TriangleSet map for scene partial update.
|
|
std::map<Standard_Size, OpenGl_TriangleSet*> myArrayToTrianglesMap;
|
|
|
|
//! Set of IDs of non-raytracable elements (to detect updates).
|
|
std::set<Standard_Integer> myNonRaytraceStructureIDs;
|
|
|
|
//! Marks if environment map should be updated.
|
|
Standard_Boolean myToUpdateEnvironmentMap;
|
|
|
|
//! State of OpenGL layer list.
|
|
Standard_Size myRaytraceLayerListState;
|
|
|
|
//! Number of accumulated frames (for progressive rendering).
|
|
Standard_Integer myAccumFrames;
|
|
|
|
//! Stored ray origins used for detection of camera movements.
|
|
OpenGl_Vec3 myPreviousOrigins[3];
|
|
|
|
//! Bullard RNG to produce random sequence.
|
|
math_BullardGenerator myRNG;
|
|
|
|
//! Tool object for sampling screen tiles in PT mode.
|
|
OpenGl_TileSampler myTileSampler;
|
|
|
|
//! Camera position used for projective mode
|
|
OpenGl_Vec3 myEyeOrig;
|
|
|
|
//! Camera view direction used for projective mode
|
|
OpenGl_Vec3 myEyeView;
|
|
|
|
//! Camera's screen vertical direction used for projective mode
|
|
OpenGl_Vec3 myEyeVert;
|
|
|
|
//! Camera's screen horizontal direction used for projective mode
|
|
OpenGl_Vec3 myEyeSide;
|
|
|
|
//! Camera's screen size used for projective mode
|
|
OpenGl_Vec2 myEyeSize;
|
|
|
|
//! Aperture radius of camera on previous frame used for depth-of-field (path tracing)
|
|
float myPrevCameraApertureRadius;
|
|
|
|
//! Focal distance of camera on previous frame used for depth-of-field (path tracing)
|
|
float myPrevCameraFocalPlaneDist;
|
|
|
|
public:
|
|
|
|
DEFINE_STANDARD_ALLOC
|
|
DEFINE_STANDARD_RTTIEXT(OpenGl_View,Graphic3d_CView) // Type definition
|
|
|
|
friend class OpenGl_GraphicDriver;
|
|
friend class OpenGl_Workspace;
|
|
friend class OpenGl_LayerList;
|
|
friend class OpenGl_FrameStats;
|
|
};
|
|
|
|
#endif // _OpenGl_View_Header
|