An abstract class that contains a depth/stencil buffer. More...

#include <OgreDepthBuffer.h>

Inheritance diagram for Ogre::DepthBuffer:

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
	DepthBuffer (uint16 poolId, uint16 bitDepth, uint32 width, uint32 height, uint32 fsaa, const String &fsaaHint, PixelFormat pixelFormat, bool isDepthTexture, bool manual, RenderSystem *renderSystem)

virtual	~DepthBuffer ()

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.

bool	copyTo (DepthBuffer *destination)
	Copies the contents of the DepthBuffer to the destination.

virtual uint16	getBitDepth () const

PixelFormat	getFormat (void) const

virtual uint32	getFsaa () const

virtual const String &	getFsaaHint () const

virtual uint32	getHeight () const

virtual uint16	getPoolId () const
	Gets the pool id in which this DepthBuffer lives.

virtual uint32	getWidth () 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

An abstract class that contains a depth/stencil buffer.

Depth Buffers can be attached to render targets. Note we handle Depth & Stencil together. DepthBuffer sharing is handled automatically for you. However, there are times where you want to specifically control depth buffers to achieve certain effects or increase performance. You can control this by hinting Ogre with POOL IDs. Created depth buffers can live in different pools, or all together in the same one. Usually, a depth buffer can only be attached to a RenderTarget if it's dimensions are bigger and have the same bit depth and same multisample settings. Depth Buffers are created automatically for new RTs when needed, and stored in the pool where the RenderTarget should have drawn from. By default, all RTs have the Id POOL_DEFAULT, which means all depth buffers are stored by default in that pool. By choosing a different Pool Id for a specific RenderTarget, that RT will only retrieve depth buffers from that pool, therefore not conflicting with sharing depth buffers with other RTs (such as shadows maps). Setting an RT to POOL_MANUAL_USAGE means Ogre won't manage the DepthBuffer for you (not recommended) RTs with POOL_NO_DEPTH are very useful when you don't want to create a DepthBuffer for it. You can still manually attach a depth buffer though as internally POOL_NO_DEPTH & POOL_MANUAL_USAGE are handled in the same way.

Behavior is consistent across all render systems, if, and only if, the same RSC flags are set RSC flags that affect this class are: RSC_RTT_SEPARATE_DEPTHBUFFER: The RTT can create a custom depth buffer different from the main depth buffer. This means, an RTT is able to not share it's depth buffer with the main window if it wants to. RSC_RTT_MAIN_DEPTHBUFFER_ATTACHABLE: When RSC_RTT_SEPARATE_DEPTHBUFFER is set, some APIs (ie. OpenGL w/ FBO) don't allow using the main depth buffer for offscreen RTTs. When this flag is set, the depth buffer can be shared between the main window and an RTT. RSC_RTT_DEPTHBUFFER_RESOLUTION_LESSEQUAL: When this flag isn't set, the depth buffer can only be shared across RTTs who have the EXACT same resolution. When it's set, it can be shared with RTTs as long as they have a resolution less or equal than the depth buffer's.

Remarks: Design discussion http://www.ogre3d.org/forums/viewtopic.php?f=4&t=53534&p=365582

Author: Matias N. Goldberg

Version: 1.0

Member Enumeration Documentation

◆ PoolId

enum Ogre::DepthBuffer::PoolId

Enumerator
POOL_NO_DEPTH
POOL_MANUAL_USAGE
POOL_DEFAULT
POOL_NON_SHAREABLE
POOL_INVALID

Constructor & Destructor Documentation

◆ DepthBuffer()

Ogre::DepthBuffer::DepthBuffer	(	uint16	poolId,
		uint16	bitDepth,
		uint32	width,
		uint32	height,
		uint32	fsaa,
		const String &	fsaaHint,
		PixelFormat	pixelFormat,
		bool	isDepthTexture,
		bool	manual,
		RenderSystem *	renderSystem
	)

◆ ~DepthBuffer()

virtual Ogre::DepthBuffer::~DepthBuffer ( )

virtual

Member Function Documentation

◆ _notifyRenderTargetAttached()

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

virtual

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 )

virtual

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 )

Sets the pool id in which this DepthBuffer lives.

Note this will detach any render target from this depth buffer

◆ copyTo()

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

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

virtual

◆ getFormat()

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

◆ getFsaa()

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

virtual

◆ getFsaaHint()

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

virtual

◆ getHeight()

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

virtual

◆ getPoolId()

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

virtual

Gets the pool id in which this DepthBuffer lives.

◆ getWidth()

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

virtual

◆ isCompatible()

virtual bool Ogre::DepthBuffer::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 in Ogre::D3D11DepthBuffer, Ogre::GL3PlusDepthBuffer, Ogre::GLES2DepthBuffer, and Ogre::MetalDepthBuffer.

◆ isDepthTexture()

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

◆ isManual()

bool Ogre::DepthBuffer::isManual ( ) const

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

static

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

OgreDepthBuffer.h

Public Types

Public Member Functions

Static Public Attributes

Detailed Description

Member Enumeration Documentation

◆ PoolId

Constructor & Destructor Documentation

◆ DepthBuffer()

◆ ~DepthBuffer()

Member Function Documentation

◆ _notifyRenderTargetAttached()

◆ _notifyRenderTargetDetached()

◆ _setPoolId()

◆ copyTo()

◆ getBitDepth()

◆ getFormat()

◆ getFsaa()

◆ getFsaaHint()

◆ getHeight()

◆ getPoolId()

◆ getWidth()

◆ isCompatible()

◆ isDepthTexture()

◆ isManual()

◆ operator delete() [1/3]

◆ operator delete() [2/3]

◆ operator delete() [3/3]

◆ operator delete[]() [1/2]

◆ operator delete[]() [2/2]

◆ operator new() [1/3]

◆ operator new() [2/3]

◆ operator new() [3/3]

◆ operator new[]() [1/2]

◆ operator new[]() [2/2]

Member Data Documentation

◆ DefaultDepthBufferFormat