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Ogre::HardwareOcclusionQuery Class Reference

This is a abstract class that that provides the interface for the query class for hardware occlusion. More...

#include <OgreHardwareOcclusionQuery.h>

Inheritance diagram for Ogre::HardwareOcclusionQuery:

Inheritance graph
[legend]
List of all members.

Public Member Functions

 HardwareOcclusionQuery ()
 Default object constructor.
virtual ~HardwareOcclusionQuery ()
 Object destructor.
virtual void beginOcclusionQuery ()=0
 Starts the hardware occlusion query Simple usage: Create one or more OcclusionQuery object one per outstanding query or one per tested object OcclusionQuery* m_pOcclusionQuery; createOcclusionQuery( &m_pOcclusionQuery ); In the rendering loop: Draw all occluders m_pOcclusionQuery->startOcclusionQuery(); Draw the polygons to be tested m_pOcclusionQuery->endOcclusionQuery();.
virtual void endOcclusionQuery ()=0
 Ends the hardware occlusion test.
virtual bool pullOcclusionQuery (unsigned int *NumOfFragments)=0
 Pulls the hardware occlusion query.
unsigned int getLastQuerysPixelcount () const
 Let's you get the last pixel count with out doing the hardware occlusion test.
virtual bool isStillOutstanding (void)=0
 Lets you know when query is done, or still be processed by the Hardware.
 AllocatedObject ()
void * operator new (size_t sz, const char *file, int line, const char *func)
 operator new, with debug line info
void * operator new (size_t sz)
void * operator new (size_t sz, void *ptr)
 placement operator new
void * operator new[] (size_t sz, const char *file, int line, const char *func)
 array operator new, with debug line info
void * operator new[] (size_t sz)
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 *)

Protected Attributes

unsigned int mPixelCount
bool mIsQueryResultStillOutstanding

Detailed Description

This is a abstract class that that provides the interface for the query class for hardware occlusion.

Author:
Lee Sandberg Updated on 13/8/2005 by Tuan Kuranes email: tuan.kuranes@free.fr

Definition at line 46 of file OgreHardwareOcclusionQuery.h.


Constructor & Destructor Documentation

Ogre::HardwareOcclusionQuery::HardwareOcclusionQuery  ) 
 

Default object constructor.

virtual Ogre::HardwareOcclusionQuery::~HardwareOcclusionQuery  )  [virtual]
 

Object destructor.


Member Function Documentation

Ogre::AllocatedObject< RenderSysAllocPolicy >::AllocatedObject  )  [explicit, inherited]
 

Definition at line 55 of file OgreMemoryAllocatedObject.h.

virtual void Ogre::HardwareOcclusionQuery::beginOcclusionQuery  )  [pure virtual]
 

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

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

virtual void Ogre::HardwareOcclusionQuery::endOcclusionQuery  )  [pure virtual]
 

Ends the hardware occlusion test.

unsigned int Ogre::HardwareOcclusionQuery::getLastQuerysPixelcount  )  const
 

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 104 of file OgreHardwareOcclusionQuery.h.

virtual bool Ogre::HardwareOcclusionQuery::isStillOutstanding void   )  [pure virtual]
 

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

Returns:
true if query isn't finished.

void Ogre::AllocatedObject< RenderSysAllocPolicy >::operator delete void *  ptr,
const char *  ,
int  ,
const char * 
[inherited]
 

Definition at line 101 of file OgreMemoryAllocatedObject.h.

void Ogre::AllocatedObject< RenderSysAllocPolicy >::operator delete void *  ptr,
void * 
[inherited]
 

Definition at line 95 of file OgreMemoryAllocatedObject.h.

void Ogre::AllocatedObject< RenderSysAllocPolicy >::operator delete void *  ptr  )  [inherited]
 

Definition at line 89 of file OgreMemoryAllocatedObject.h.

void Ogre::AllocatedObject< RenderSysAllocPolicy >::operator delete[] void *  ptr,
const char *  ,
int  ,
const char * 
[inherited]
 

Definition at line 112 of file OgreMemoryAllocatedObject.h.

void Ogre::AllocatedObject< RenderSysAllocPolicy >::operator delete[] void *  ptr  )  [inherited]
 

Definition at line 106 of file OgreMemoryAllocatedObject.h.

void* Ogre::AllocatedObject< RenderSysAllocPolicy >::operator new size_t  sz,
void *  ptr
[inherited]
 

placement operator new

Definition at line 73 of file OgreMemoryAllocatedObject.h.

void* Ogre::AllocatedObject< RenderSysAllocPolicy >::operator new size_t  sz  )  [inherited]
 

Definition at line 67 of file OgreMemoryAllocatedObject.h.

void* Ogre::AllocatedObject< RenderSysAllocPolicy >::operator new size_t  sz,
const char *  file,
int  line,
const char *  func
[inherited]
 

operator new, with debug line info

Definition at line 62 of file OgreMemoryAllocatedObject.h.

void* Ogre::AllocatedObject< RenderSysAllocPolicy >::operator new[] size_t  sz  )  [inherited]
 

Definition at line 84 of file OgreMemoryAllocatedObject.h.

void* Ogre::AllocatedObject< RenderSysAllocPolicy >::operator new[] size_t  sz,
const char *  file,
int  line,
const char *  func
[inherited]
 

array operator new, with debug line info

Definition at line 79 of file OgreMemoryAllocatedObject.h.

virtual bool Ogre::HardwareOcclusionQuery::pullOcclusionQuery unsigned int *  NumOfFragments  )  [pure 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:
NumOfFragments will get the resulting number of fragments.
Returns:
True if success or false if not.


Member Data Documentation

bool Ogre::HardwareOcclusionQuery::mIsQueryResultStillOutstanding [protected]
 

Definition at line 120 of file OgreHardwareOcclusionQuery.h.

unsigned int Ogre::HardwareOcclusionQuery::mPixelCount [protected]
 

Definition at line 118 of file OgreHardwareOcclusionQuery.h.


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

Copyright © 2008 Torus Knot Software Ltd
Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sat Apr 11 13:48:17 2009