In frames of this issue binary BVH tree produced by building algorithms was collapsed into 4-ary BVH (QBVH).
The BVH traversal code in GLSL was modified to process such trees correctly.
This allows to implore thread coherence, decrease BVH memory consumption (~2 times), and use traversal stack of the half size.
As a result, ray tracing scalability is improved, as well as rendering performance. For various setups, speedup is 12-18%.
1) Zoom persistence mode now fixes object in pixel coordinates and is independent on view size
2) Used gp_GTrsf instead of gp_Trsf SelectMgr_ViewerSelector to store Graphic3d_Mat4d
3) Zoom persisted objects changed behavior (become bigger) therefore test cases were updated according to new state.
4) Corrected scale for rectangular frustum
Updated test for manipulator
OpenGl_View now caches bounding boxes per Z-layer (instead of bounding box of entire scene in Graphic3d_CView).
Redundant invalidation of cached scene bounding box is now avoided in case
when new presentation attributes are assigned to the graphic structure.
Add a new methods ConsiderZoomPersistenceObjects() and considerZoomPersistenceObjects() in the Graphic3d_CView, OpenGl_View and OpenGl_Layer classes.
Call ConsiderZoomPersistenceObjects() in the V3d_View::FitMinMax method.
std::numeric_limits<T>::lowest() fix
Add handle on environment texture in OpenGl_Workspace.
Add a new parameter UseEnvironmentTexture to the Graphic3d_ZLayerSettings.
OSD layers don't use environment texture by default.
zbuffertrihedron doesn't use environment texture.
vzlayer can enable/disable environment texture mappping.
Delete unnecessary files Graphic3d_TypeOfSurfaceDetail.hxx and V3d_TypeOfSurface.hxx.
Delete functions SurfaceDetailType and SetSurfaceDetailType functions from Graphic3d_CView.
Delete functions SurfaceDetailState and UpdateSurfaceDetailStateTo from OpenGl_ShaderManager.
Delete class OpenGl_SurfaceDetailState.
Delete functions SurfaceDetailType and SetSurfaceDetailType from OpenGl_View.
Delete functions SetSurfaceDetail and SurfaceDetail() from V3d_View.
Delete functions SetDefaultSurfaceDetail and DefaultSurfaceDetail from V3d_Viewer.
Delete draw command VSetTextureMode.
Add description in dox.
Add missing code for z-fit support for zoom, rotate persistent object.
Fixed wrong statement that should enable frustum culling optimization for zoom, rotate persistent object.
Fixed BVH_LinearBuilder.lxx to correctly control number of items in leaf node for a case of items with equal bounding boxes.
Added non-regression test case for z-clipping of transform persistent objects.
Expose interface of OpenGl_View (OpenGL graphics rendering methods) to client code
and collecting all high-level API methods of application views in V3d_View class.
1) Exposing interface of OpenGl_View:
The OpenGl_View inherits from new class Graphic3d_CView.
Graphic3d_CView is an interface class that declares abstract methods for managing displayed structures,
display properties and a base layer code that implements computation
and management of HLR (or more broadly speaking view-depended) structures.
In new implementation it takes place of eliminated Visual3d_View.
As before the instance of Graphic3d_CView is still completely managed by V3d_View classes.
It can be accessed through V3d_View interface but normally this should not be required as all its methods are completely wrapped.
In more details, a concrete specialization of Graphic3d_CView is created and returned by graphical driver on request.
Right after creation the views is directly used for setting rendering properties and adding graphical structures to be displayed.
The rendering of graphics is possible after mapping a window and activating the view.
The direct setting of properties makes obsolete usage of intermediate structures with display parameter
like Visual3d_ContextView and etc (the whole package of Visual3d become redundant).
2) Collecting all high-level API methods of application views in V3d package:
The patch includes elimination of Visual3d layer.
All of its methods that could be previously used by application are now exposed and should be accessed on the level of V3d entities.
- Introduced new class Graphic3d_CView.
This is a base class for render views.
Made possible to specialize concrete instances of the class by graphical driver.
- Moved all methods managing rendering views into interface of Graphic3d_CView.
The corresponding methods were removed from interface of graphical driver.
3) Eliminated Visual3d package:
- Logic of managing display of structures was put from Visual3d_ViewManager into Graphic3d_StructureManager.
- Removed Visual3d_View class. Logic of managing computed structures was put into base layer of Graphi3d_CView.
- Removed all intermediate structures for storing view parameters e.g. Visual3d_ContextView.
All settings are kept by instances of Graphic3d_CView
- Removed Visual3d_Light intermediate class.
All light properties are still stored in Graphic3d_CLight structure.
The structure is directly access by instance of V3d_Light classes.
- Moved all needed enumerations into Graphic3d package.
4) Update package D3DHost to new changes.
5) Update code of OCCT samples to new changes.
1) New Graphic3d_TransformPers structure for defining parameters and algorithm methods, featuring:
a) application of transformation to projection and world view matrices;
b) computation of model-world transformation of persistent object;
c) computation of transformed bounding box of persistent object.
2) Transform persistence algorithm does not make any changes to model-world transformation of object (deals with projection and world view matrices only), thus making possible to employ local transformation in a usual way.
3) Support of BVH selection for transform persistent objects (pan, rotate, zoom, trihedron persistence only).
4) Support efficient frustum culling for transform persistent objects (pan, rotate, zoom, trihedron persistence only).
5) Support of z-fitting algorithm for world-view space transform persistent objects (rotate, zoom persistence only).
6) Rewrite usage of transform persistence structures and utilities classes:
a) Replaced Graphic3d_CTransPers, TEL_TRANSFORM_PERSISTENCE by Graphic3d_TransformPers;
b) Move functions from OpenGl_Utils.hxx to Graphic3d_TransformUtils.hxx;
c) Extract matrix stack class from OpenGl_Utils.hxx to OpenGl_MatrixStack.hxx;
7) New class Graphic3d_WorldViewProjState to keep track of projection, world view matrices changes for a camera.
8) New test case bugs/vis/bug26344.
9) Renamed method Graphic3d_Camera::ModelViewState of to ::WorldViewState for consistency.
Missing headers added; includes of headers "Handle_...hxx" removed.
Misuses of macro Handle() and its use in typedefs corrected.
Alias classes Profile and Option are removed from IFSelect; ones defined in MoniTool are used directly.
Removed header files defining only Handle classes (except Image_PixMap_Handle.hxx)
Classes SelectMgr_BaseFrustum and now inherit Standard_Transient and can be manipulated by Handle (not NCollection_Handle)
Fixed reference-type local variable pointing to temporary object
Use of handle in conditional expressions and comparisons to NULL are replaced by call to method IsNull()
OpenGl_Workspace::updateMaterial() - do not activate writing into Depth buffer without Graphic3d_ZLayerDepthWrite flag.
Add method OpenGl_Workspace::UseDepthWrite() to track glDepthMask() state.
Drop the following outdated API methods conflicting with Z-layers API:
- V3d_View::EnableDepthTest(), V3d_View::IsDepthTestEnabled()
- Visual3d_View::ZBufferIsActivated(), Visual3d_View::SetZBufferActivity(), Visual3d_View::EnableDepthTest(), Visual3d_View::IsDepthTestEnabled()
- Graphic3d_GraphicDriver::SetDepthTestEnabled(), Graphic3d_GraphicDriver::IsDepthTestEnabled()
Activate Z-buffer by default, and manage it state only by Z-layer flags.
Removed unnecessary overlap check in traverse of layer items;
Slight optimization of calculations in overlap detection methods in OpenGl_BVHTreeSelector.
Move OpenGl_Structure::myZLayer to base class Graphic3d_CStructure.
Graphic3d_ZLayerId - introduce new pre-defined ZLayers.
Do not clear Depth buffer twice for default ZLayer.
AIS_InteractiveContext::Display() - add new argument AIS_DisplayStatus to specify displaying status.
Drop unused Graphic3d_CPick and related methods.
Drop OpenGl_Structure::myNamedStatus - use flags from parent class Graphic3d_CStructure directly.
OpenGl_LayerList ::ChangeLayer(), ::ChangePriority - fix structure remove from unexpected layer.
Merge class OpenGl_PriorityList into OpenGl_Layer.
PrsMgr_PresentationManager::mySelectionColor - store selection color as field of Presentation Manager.
PrsMgr_Presentation class - do not declare private methods as virtual.
PrsMgr_Presentation::Highlight() - extend method syntax and drop methods ::Color() and ::BoundBox().
PrsMgr_PresentableObject - store ZLayer in presentable object
to display object presentations in required layer directly
(without displaying it in wrong layer first).
test/mesh/end - force re-displaying the shape to compute mesh anew
Test-case for issue
If specific layer setting is not enabled, default value extracted from current OpenGl state will be used.
Default value fix.
Updated test case bugs/vis/bug24867
Linux warning fixed.
