GL3+ doesn't support mapping the same buffer twice even if the regions don't overlap. More...

#include <OgreNULLDynamicBuffer.h>

Public Member Functions
	GL3PlusDynamicBuffer (GLuint vboName, GLuint vboSize, GL3PlusVaoManager *vaoManager, BufferType persistentMethod)

	GL3PlusDynamicBuffer (GLuint vboName, GLuint vboSize, GL3PlusVaoManager *vaoManager, BufferType persistentMethod)

	~GL3PlusDynamicBuffer ()

	~GL3PlusDynamicBuffer ()

void	flush (size_t ticket, size_t start, size_t count)
	Flushes the region of the given ticket. start is 0-based. More...

void	flush (size_t ticket, size_t start, size_t count)
	Flushes the region of the given ticket. start is 0-based. More...

GLuint	getVboName () const

GLuint	getVboName () const

void *RESTRICT_ALIAS_RETURN	map (size_t start, size_t count, size_t &outTicket)
	Assumes mVboName is already bound to GL_COPY_WRITE_BUFFER!!! More...

void *RESTRICT_ALIAS_RETURN	map (size_t start, size_t count, size_t &outTicket)
	Assumes mVboName is already bound to GL_COPY_WRITE_BUFFER!!! More...

void	unmap (size_t ticket)
	Unmaps given ticket (got from. More...

void	unmap (size_t ticket)
	Unmaps given ticket (got from. More...

Detailed Description

GL3+ doesn't support mapping the same buffer twice even if the regions don't overlap.

For performance we keep many buffers as one big buffer, but for compatibility reasons (with GL3/DX10 HW) we treat them as separate buffers.

: This class takes care of mapping buffers once while allowing BufferInterface to map subregions of it as if they were separate buffers.

Remarks: This is a very thin/lightweight wrapper around OpenGL glMapBufferRange, thus: Caller is responsible for flushing regions before unmapping. Caller is responsible for proper synchronization. No check is performed to see if two map calls overlap.

Constructor & Destructor Documentation

◆ GL3PlusDynamicBuffer() [1/2]

Ogre::GL3PlusDynamicBuffer::GL3PlusDynamicBuffer	(	GLuint	vboName,
		GLuint	vboSize,
		GL3PlusVaoManager *	vaoManager,
		BufferType	persistentMethod
	)

◆ ~GL3PlusDynamicBuffer() [1/2]

Ogre::GL3PlusDynamicBuffer::~GL3PlusDynamicBuffer ( )

◆ GL3PlusDynamicBuffer() [2/2]

Ogre::GL3PlusDynamicBuffer::GL3PlusDynamicBuffer	(	GLuint	vboName,
		GLuint	vboSize,
		GL3PlusVaoManager *	vaoManager,
		BufferType	persistentMethod
	)

◆ ~GL3PlusDynamicBuffer() [2/2]

Ogre::GL3PlusDynamicBuffer::~GL3PlusDynamicBuffer ( )

Member Function Documentation

◆ flush() [1/2]

void Ogre::GL3PlusDynamicBuffer::flush	(	size_t	ticket,
		size_t	start,
		size_t	count
	)

Flushes the region of the given ticket. start is 0-based.

◆ flush() [2/2]

void Ogre::GL3PlusDynamicBuffer::flush	(	size_t	ticket,
		size_t	start,
		size_t	count
	)

Flushes the region of the given ticket. start is 0-based.

◆ getVboName() [1/2]

GLuint Ogre::GL3PlusDynamicBuffer::getVboName ( ) const

inline

◆ getVboName() [2/2]

GLuint Ogre::GL3PlusDynamicBuffer::getVboName ( ) const

inline

◆ map() [1/2]

void* RESTRICT_ALIAS_RETURN Ogre::GL3PlusDynamicBuffer::map	(	size_t	start,
		size_t	count,
		size_t &	outTicket
	)

Assumes mVboName is already bound to GL_COPY_WRITE_BUFFER!!!

◆ map() [2/2]

void* RESTRICT_ALIAS_RETURN Ogre::GL3PlusDynamicBuffer::map	(	size_t	start,
		size_t	count,
		size_t &	outTicket
	)