Main Page Modules C++ Classes Compound List File List Index Related Pages What is the Nebula Device? Features Downloads License Contact Us Documentation FAQ Getting Started Script Docs Links forums Bugs Nebula2 on Sourceforge Radon Labs Categories News Images changes Search Archives July 2008 May 2008 April 2007 March 2007 August 2006 June 2006 March 2006 October 2005 August 2005 July 2005 Meta Login RSS Comments RSS nOcclusionQuery Class Reference #include <nocclusionquery.h> Inheritance diagram for nOcclusionQuery: List of all members. Detailed Description Runs a sequence of occlusion queries. Will render bounding boxes and check how many pixels pass the z test. If none of the pixels pass the test, the rectangle is occluded. Try to issue as many queries as possible before getting the query results, this maximizes GPU/CPU parallelization. This class should be subclassed by an graphics API-specific implementation. (C) 2005 Radon Labs GmbH Definition at line 24 of file nocclusionquery.h. Public Member Functions virtual void  Begin ()   begin issuing occlusion queries virtual void  AddShapeQuery (nGfxServer2::ShapeType type, const matrix44 &modelMatrix, const void *userData)   add a bounding box query virtual void  End ()   finish issuing queries virtual int  GetNumQueries () const   get number of issued queries virtual const void *  GetUserData (int queryIndex)   get user data associated with a query virtual bool  GetOcclusionStatus (int queryIndex)   get occlusion status for a issued query (true is occluded) virtual void  Clear ()   clear all queries Protected Member Functions   nOcclusionQuery ()   constructor virtual  ~nOcclusionQuery ()   destructor Constructor & Destructor Documentation nOcclusionQuery::nOcclusionQuery (   )  [protected]   constructor Definition at line 10 of file nocclusionquery.cc. nOcclusionQuery::~nOcclusionQuery (   )  [protected, virtual]   destructor Definition at line 18 of file nocclusionquery.cc. Member Function Documentation void nOcclusionQuery::Begin (   )  [virtual]   begin issuing occlusion queries Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 36 of file nocclusionquery.cc. void nOcclusionQuery::AddShapeQuery (  nGfxServer2::ShapeType  type, const matrix44 &  modelMatrix, const void *  userData )  [virtual]   add a bounding box query Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 45 of file nocclusionquery.cc. void nOcclusionQuery::End (   )  [virtual]   finish issuing queries Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 54 of file nocclusionquery.cc. int nOcclusionQuery::GetNumQueries (   )  const [virtual]   get number of issued queries Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 63 of file nocclusionquery.cc. const void * nOcclusionQuery::GetUserData (  int  queryIndex  )  [virtual]   get user data associated with a query Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 72 of file nocclusionquery.cc. bool nOcclusionQuery::GetOcclusionStatus (  int  queryIndex  )  [virtual]   get occlusion status for a issued query (true is occluded) Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 81 of file nocclusionquery.cc. void nOcclusionQuery::Clear (   )  [virtual]   clear all queries Reimplemented in nD3D9OcclusionQuery, and nGLOcclusionQuery. Definition at line 27 of file nocclusionquery.cc. The documentation for this class was generated from the following files: nocclusionquery.h nocclusionquery.cc Nebula Device 2 documentation generated by doxygen at Sun Apr 8 20:06:47 2007