Ogre::GL3PlusDepthBuffer Class Reference

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#include <OgreGL3PlusDepthBuffer.h>

Inheritance diagram for Ogre::GL3PlusDepthBuffer:

Public Types
enum	PoolId {   POOL_NO_DEPTH = 0 , POOL_MANUAL_USAGE = 0 , POOL_DEFAULT = 1 , POOL_NON_SHAREABLE = 65534 ,   POOL_INVALID = 65535 }

Public Member Functions
	GL3PlusDepthBuffer (uint16 poolId, GL3PlusRenderSystem *renderSystem, GL3PlusContext *creatorContext, GLenum depthFormat, GLenum stencilFormat, uint32 width, uint32 height, uint32 fsaa, uint32 multiSampleQuality, PixelFormat pixelFormat, bool isDepthTexture, bool _isManual)
	~GL3PlusDepthBuffer ()
virtual void	_notifyRenderTargetAttached (RenderTarget *renderTarget)
	Called when a RenderTarget is attaches this DepthBuffer.
virtual void	_notifyRenderTargetDetached (RenderTarget *renderTarget)
	Called when a RenderTarget is detaches from this DepthBuffer.
void	_setPoolId (uint16 poolId)
	Sets the pool id in which this DepthBuffer lives.
void	bindToFramebuffer (GLenum target=GL_FRAMEBUFFER)
bool	copyTo (DepthBuffer *destination)
	Copies the contents of the DepthBuffer to the destination.
virtual uint16	getBitDepth () const
GLuint	getDepthBuffer () const
PixelFormat	getFormat (void) const
virtual uint32	getFsaa () const
virtual const String &	getFsaaHint () const
GL3PlusContext *	getGLContext () const
virtual uint32	getHeight () const
virtual uint16	getPoolId () const
	Gets the pool id in which this DepthBuffer lives.
GLuint	getStencilBuffer () const
virtual uint32	getWidth () const
bool	hasSeparateStencilBuffer () const
virtual bool	isCompatible (RenderTarget *renderTarget, bool exactFormatMatch) const
	Returns whether the specified RenderTarget is compatible with this DepthBuffer That is, this DepthBuffer can be attached to that RenderTarget.
bool	isDepthTexture (void) const
bool	isManual () const
	Manual DepthBuffers are cleared in RenderSystem's destructor.
void	operator delete (void *ptr)
void	operator delete (void *ptr, const char *, int, const char *)
void	operator delete (void *ptr, void *)
void	operator delete[] (void *ptr)
void	operator delete[] (void *ptr, const char *, int, const char *)
void *	operator new (size_t sz)
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 *ptr)
	placement operator new
void *	operator new[] (size_t sz)
void *	operator new[] (size_t sz, const char *file, int line, const char *func)
	array operator new, with debug line info

Static Public Attributes
static PixelFormat	DefaultDepthBufferFormat

Detailed Description

OpenGL supports 3 different methods: FBO, pbuffer & Copy. Each one has it's own limitations. Non-FBO methods are solved using "dummy" DepthBuffers. That is, a DepthBuffer pointer is attached to the RenderTarget (for the sake of consistency) but it doesn't actually contain a Depth surface/renderbuffer (mDepthBuffer & mStencilBuffer are null pointers all the time) Those dummy DepthBuffers are identified thanks to their GL context. Note that FBOs don't allow sharing with the main window's depth buffer. Therefore even when FBO is enabled, a dummy DepthBuffer is still used to manage the windows.

Member Enumeration Documentation

PoolId

enum Ogre::DepthBuffer::PoolId

inherited

Enumerator
POOL_NO_DEPTH
POOL_MANUAL_USAGE
POOL_DEFAULT
POOL_NON_SHAREABLE
POOL_INVALID

Constructor & Destructor Documentation

GL3PlusDepthBuffer()

Ogre::GL3PlusDepthBuffer::GL3PlusDepthBuffer	(	uint16	poolId,
		GL3PlusRenderSystem *	renderSystem,
		GL3PlusContext *	creatorContext,
		GLenum	depthFormat,
		GLenum	stencilFormat,
		uint32	width,
		uint32	height,
		uint32	fsaa,
		uint32	multiSampleQuality,
		PixelFormat	pixelFormat,
		bool	isDepthTexture,
		bool	_isManual
	)

~GL3PlusDepthBuffer()

Ogre::GL3PlusDepthBuffer::~GL3PlusDepthBuffer

(

)

Member Function Documentation

_notifyRenderTargetAttached()

virtual void Ogre::DepthBuffer::_notifyRenderTargetAttached ( RenderTarget *  renderTarget )

virtualinherited

Called when a RenderTarget is attaches this DepthBuffer.

Remarks

This function doesn't actually attach. It merely informs the DepthBuffer which RenderTarget did attach. The real attachment happens in RenderTarget::attachDepthBuffer()

Parameters

renderTarget

The RenderTarget that has just been attached

_notifyRenderTargetDetached()

virtual void Ogre::DepthBuffer::_notifyRenderTargetDetached ( RenderTarget *  renderTarget )

virtualinherited

Called when a RenderTarget is detaches from this DepthBuffer.

Remarks

Same as DepthBuffer::_notifyRenderTargetAttached()

Parameters

renderTarget

The RenderTarget that has just been detached

_setPoolId()

void Ogre::DepthBuffer::_setPoolId ( uint16  poolId )

inherited

Sets the pool id in which this DepthBuffer lives.

Note this will detach any render target from this depth buffer

bindToFramebuffer()

void Ogre::GL3PlusDepthBuffer::bindToFramebuffer

(

GLenum

target = GL_FRAMEBUFFER

)

copyTo()

bool Ogre::DepthBuffer::copyTo ( DepthBuffer *  destination )

inherited

Copies the contents of the DepthBuffer to the destination.

Useful when you want to bind a DepthBuffer for sampling as a texture, but later resume rendering with this depth buffer (binding a DepthBuffer as a texture forces it to be decompressed and disables other optimization algorithms on a lot of Hardware. GCN Tahiti aka AMD Radeon R9 280 is no longer affected by this issue)

Remarks

The function will throw if the depth buffers are incompatible (e.g. different resolution, different format, different MSAA settings)

Parameters

destination

DepthBuffer to copy to.

Returns

False if failed to copy for hardware reasons (DX10 does not allow copying MSAA depth buffer; DX10.1 does)

getBitDepth()

virtual uint16 Ogre::DepthBuffer::getBitDepth ( ) const

virtualinherited

getDepthBuffer()

GLuint Ogre::GL3PlusDepthBuffer::getDepthBuffer ( ) const

inline

getFormat()

PixelFormat Ogre::DepthBuffer::getFormat ( void  ) const

inherited

getFsaa()

virtual uint32 Ogre::DepthBuffer::getFsaa ( ) const

virtualinherited

getFsaaHint()

virtual const String & Ogre::DepthBuffer::getFsaaHint ( ) const

virtualinherited

getGLContext()

GL3PlusContext * Ogre::GL3PlusDepthBuffer::getGLContext ( ) const

inline

getHeight()

virtual uint32 Ogre::DepthBuffer::getHeight ( ) const

virtualinherited

getPoolId()

virtual uint16 Ogre::DepthBuffer::getPoolId ( ) const

virtualinherited

Gets the pool id in which this DepthBuffer lives.

getStencilBuffer()

GLuint Ogre::GL3PlusDepthBuffer::getStencilBuffer ( ) const

inline

getWidth()

virtual uint32 Ogre::DepthBuffer::getWidth ( ) const

virtualinherited

hasSeparateStencilBuffer()

bool Ogre::GL3PlusDepthBuffer::hasSeparateStencilBuffer

(

)

const

isCompatible()

virtual bool Ogre::GL3PlusDepthBuffer::isCompatible ( RenderTarget *  renderTarget, bool  exactFormatMatch  ) const

virtual

Returns whether the specified RenderTarget is compatible with this DepthBuffer That is, this DepthBuffer can be attached to that RenderTarget.

Remarks

Most APIs impose the following restrictions: Width & height must be equal or higher than the render target's They must be of the same bit depth. They need to have the same FSAA setting

Parameters

renderTarget	The render target to test against
exactFormatMatch	True if looking for the exact format according to the RT's preferred format. False if the RT's preferred format should be ignored.

Reimplemented from Ogre::DepthBuffer.

isDepthTexture()

bool Ogre::DepthBuffer::isDepthTexture ( void  ) const

inherited

isManual()

bool Ogre::DepthBuffer::isManual ( ) const

inherited

Manual DepthBuffers are cleared in RenderSystem's destructor.

Non-manual ones are released with it's render target (aka, a backbuffer or similar)

operator delete() [1/3]

template<class Alloc >

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

inlineinherited

operator delete() [2/3]

template<class Alloc >

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

inlineinherited

operator delete() [3/3]

template<class Alloc >

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

inlineinherited

operator delete[]() [1/2]

template<class Alloc >

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

inlineinherited

operator delete[]() [2/2]

template<class Alloc >

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

inlineinherited

operator new() [1/3]

template<class Alloc >

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

inlineinherited

operator new() [2/3]

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

operator new() [3/3]

template<class Alloc >

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

inlineinherited

placement operator new

operator new[]() [1/2]

template<class Alloc >

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

inlineinherited

operator new[]() [2/2]

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

Member Data Documentation

DefaultDepthBufferFormat

PixelFormat Ogre::DepthBuffer::DefaultDepthBufferFormat

staticinherited

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

• OgreGL3PlusDepthBuffer.h