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Object-Oriented Graphics Rendering Engine
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Ogre::GLHardwareOcclusionQuery Class Reference

This is a class that is the base class of the query class for hardware occlusion. More...

#include <OgreGLHardwareOcclusionQuery.h>

+ Inheritance diagram for Ogre::GLHardwareOcclusionQuery:
+ Collaboration diagram for Ogre::GLHardwareOcclusionQuery:

Public Member Functions

 GLHardwareOcclusionQuery ()
 Default object constructor. More...
 
 ~GLHardwareOcclusionQuery ()
 Object destructor. More...
 
void beginOcclusionQuery ()
 Starts the hardware occlusion query. More...
 
void endOcclusionQuery ()
 Ends the hardware occlusion test. More...
 
unsigned int getLastQuerysPixelcount () const
 Let's you get the last pixel count with out doing the hardware occlusion test. More...
 
bool isStillOutstanding (void)
 Lets you know when query is done, or still be processed by the Hardware. More...
 
void operator delete (void *ptr)
 
void operator delete (void *ptr, void *)
 
void operator delete (void *ptr, const char *, int, const char *)
 
void operator delete[] (void *ptr)
 
void operator delete[] (void *ptr, const char *, int, const char *)
 
void * operator new (size_t sz, const char *file, int line, const char *func)
 operator new, with debug line info More...
 
void * operator new (size_t sz)
 
void * operator new (size_t sz, void *ptr)
 placement operator new More...
 
void * operator new[] (size_t sz, const char *file, int line, const char *func)
 array operator new, with debug line info More...
 
void * operator new[] (size_t sz)
 
bool pullOcclusionQuery (unsigned int *NumOfFragments)
 Pulls the hardware occlusion query. More...
 

Protected Attributes

bool mIsQueryResultStillOutstanding
 Has the query returned a result yet? More...
 
unsigned int mPixelCount
 Number of visible pixels determined by last query. More...
 

Private Attributes

GLuint mQueryID
 

Detailed Description

This is a class that is the base class of the query class for hardware occlusion.

Author
Lee Sandberg email: lee@a.nosp@m.bcme.nosp@m.dia.s.nosp@m.e Updated on 13/9/2005 by Tuan Kuranes email: tuan..nosp@m.kura.nosp@m.nes@f.nosp@m.ree..nosp@m.fr

Definition at line 72 of file OgreGLHardwareOcclusionQuery.h.

Constructor & Destructor Documentation

Ogre::GLHardwareOcclusionQuery::GLHardwareOcclusionQuery ( )

Default object constructor.

Ogre::GLHardwareOcclusionQuery::~GLHardwareOcclusionQuery ( )

Object destructor.

Member Function Documentation

void Ogre::GLHardwareOcclusionQuery::beginOcclusionQuery ( )
virtual

Starts the hardware occlusion query.

Remarks
Simple usage: Create one or more OcclusionQuery object one per outstanding query or one per tested object OcclusionQuery* mOcclusionQuery; createOcclusionQuery( &mOcclusionQuery ); In the rendering loop: Draw all occluders mOcclusionQuery->startOcclusionQuery(); Draw the polygons to be tested mOcclusionQuery->endOcclusionQuery();

Results must be pulled using: UINT mNumberOfPixelsVisable; pullOcclusionQuery( &mNumberOfPixelsVisable );

Implements Ogre::HardwareOcclusionQuery.

void Ogre::GLHardwareOcclusionQuery::endOcclusionQuery ( )
virtual

Ends the hardware occlusion test.

Implements Ogre::HardwareOcclusionQuery.

unsigned int Ogre::HardwareOcclusionQuery::getLastQuerysPixelcount ( ) const
inlineinherited

Let's you get the last pixel count with out doing the hardware occlusion test.

Returns
The last fragment count from the last test. Remarks This function won't give you new values, just the old value.

Definition at line 109 of file OgreHardwareOcclusionQuery.h.

bool Ogre::GLHardwareOcclusionQuery::isStillOutstanding ( void  )
virtual

Lets you know when query is done, or still be processed by the Hardware.

Returns
true if query isn't finished.

Implements Ogre::HardwareOcclusionQuery.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr)
inlineinherited

Definition at line 96 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
void *   
)
inlineinherited

Definition at line 102 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

Definition at line 108 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr)
inlineinherited

Definition at line 113 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void Ogre::AllocatedObject< Alloc >::operator delete[] ( void *  ptr,
const char *  ,
int  ,
const char *   
)
inlineinherited

Definition at line 119 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

operator new, with debug line info

Definition at line 68 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz)
inlineinherited

Definition at line 73 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new ( size_t  sz,
void *  ptr 
)
inlineinherited

placement operator new

Definition at line 79 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz,
const char *  file,
int  line,
const char *  func 
)
inlineinherited

array operator new, with debug line info

Definition at line 86 of file OgreMemoryAllocatedObject.h.

template<class Alloc >
void* Ogre::AllocatedObject< Alloc >::operator new[] ( size_t  sz)
inlineinherited

Definition at line 91 of file OgreMemoryAllocatedObject.h.

bool Ogre::GLHardwareOcclusionQuery::pullOcclusionQuery ( unsigned int *  NumOfFragments)
virtual

Pulls the hardware occlusion query.

Note
Waits until the query result is available; use isStillOutstanding if just want to test if the result is available.
Return values
NumOfFragmentswill get the resulting number of fragments.
Returns
True if success or false if not.

Implements Ogre::HardwareOcclusionQuery.

Member Data Documentation

bool Ogre::HardwareOcclusionQuery::mIsQueryResultStillOutstanding
protectedinherited

Has the query returned a result yet?

Definition at line 125 of file OgreHardwareOcclusionQuery.h.

unsigned int Ogre::HardwareOcclusionQuery::mPixelCount
protectedinherited

Number of visible pixels determined by last query.

Definition at line 123 of file OgreHardwareOcclusionQuery.h.

Referenced by Ogre::D3D11HardwareOcclusionQuery::getLastQuerysPixelcount().

GLuint Ogre::GLHardwareOcclusionQuery::mQueryID
private

Definition at line 102 of file OgreGLHardwareOcclusionQuery.h.


The documentation for this class was generated from the following file: