Common buffer operations for most v1 buffer interfaces used in Metal This implementation treats: Ignores STATIC and DYNAMIC bit in buffers Lack of WRITE_ONLY and DISCARDABLE buffer puts it in slowest path. More...

#include <OgreMetalHardwareBufferCommon.h>

Inheritance diagram for Ogre::MetalHardwareBufferCommon:

Public Member Functions
	MetalHardwareBufferCommon (size_t sizeBytes, Usage usage, bool useShadowBuffer, uint16 alignment, MetalDevice *device)

virtual	~MetalHardwareBufferCommon ()

void	_notifyDeviceStalled ()

void	_updateFromShadow (void) override
	Updates the real buffer from the shadow buffer, if required. More...

void	copyData (HardwareBuffer &srcBuffer, size_t srcOffset, size_t dstOffset, size_t length, bool discardWholeBuffer=false) override
	Copy data from another buffer into this one. More...

id< MTLBuffer >	getBufferName (size_t &outOffset)
	Returns the actual API buffer, but first sets mLastFrameUsed as we assume you're calling this function to use the buffer in the GPU. More...

void *	lockImpl (size_t offset, size_t length, LockOptions options) override
	Internal implementation of lock() More...

void	readData (size_t offset, size_t length, void *pDest) override
	Reads data from the buffer and places it in the memory pointed to by pDest. More...

void	unlockImpl () override
	Internal implementation of unlock() More...

void	writeData (size_t offset, size_t length, const void *pSource, bool discardWholeBuffer=false) override
	Writes data to the buffer from an area of system memory; note that you must ensure that your buffer is big enough. More...

void	writeDataImpl (size_t offset, size_t length, const void *pSource, bool discardWholeBuffer)

Public Member Functions inherited from Ogre::HardwareBuffer
	HardwareBuffer (Usage usage, bool systemMemory, bool useShadowBuffer)
	Constructor, to be called by HardwareBufferManager only. More...

virtual	~HardwareBuffer ()

template<typename T >
T *	_getImpl ()

void	copyData (HardwareBuffer &srcBuffer)
	Copy all data from another buffer into this one. More...

size_t	getSizeInBytes (void) const
	Returns the size of this buffer in bytes. More...

Usage	getUsage (void) const
	Returns the Usage flags with which this buffer was created. More...

bool	hasShadowBuffer (void) const
	Returns whether this buffer has a system memory shadow for quicker reading. More...

bool	isLocked (void) const
	Returns whether or not this buffer is currently locked. More...

bool	isSystemMemory (void) const
	Returns whether this buffer is held in system memory. More...

void *	lock (LockOptions options)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...

virtual void *	lock (size_t offset, size_t length, LockOptions options)
	Lock the buffer for (potentially) reading / writing. More...

void	suppressHardwareUpdate (bool suppress)
	Pass true to suppress hardware upload of shadow buffer changes. More...

void	unlock (void)
	Releases the lock on this buffer. More...

Additional Inherited Members
Public Types inherited from Ogre::HardwareBuffer
enum	LockOptions : uint8 { HBL_NORMAL , HBL_DISCARD , HBL_READ_ONLY , HBL_NO_OVERWRITE , HBL_WRITE_ONLY }
	Locking options. More...

typedef uint8	Usage

enum	UsageEnum { HBU_STATIC = HBU_GPU_TO_CPU , HBU_DYNAMIC = HBU_CPU_ONLY , HBU_WRITE_ONLY = HBU_DETAIL_WRITE_ONLY , HBU_DISCARDABLE = 8 , HBU_STATIC_WRITE_ONLY = HBU_GPU_ONLY , HBU_DYNAMIC_WRITE_ONLY = HBU_CPU_TO_GPU , HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE = HBU_CPU_TO_GPU }
	Rather use HardwareBufferUsage. More...

Detailed Description

Common buffer operations for most v1 buffer interfaces used in Metal This implementation treats: Ignores STATIC and DYNAMIC bit in buffers Lack of WRITE_ONLY and DISCARDABLE buffer puts it in slowest path.

Puts WRITE_ONLY in device memory and uses staging buffers to avoid blocking. Use WRITE_ONLY when possible.

Constructor & Destructor Documentation

◆ MetalHardwareBufferCommon()

Ogre::MetalHardwareBufferCommon::MetalHardwareBufferCommon	(	size_t	sizeBytes,
		Usage	usage,
		bool	useShadowBuffer,
		uint16	alignment,
		MetalDevice *	device
	)

◆ ~MetalHardwareBufferCommon()

virtual Ogre::MetalHardwareBufferCommon::~MetalHardwareBufferCommon ( )

virtual

Member Function Documentation

◆ _notifyDeviceStalled()

void Ogre::MetalHardwareBufferCommon::_notifyDeviceStalled ( )

inline

◆ getBufferName()

id<MTLBuffer> Ogre::MetalHardwareBufferCommon::getBufferName ( size_t & outOffset )

Returns the actual API buffer, but first sets mLastFrameUsed as we assume you're calling this function to use the buffer in the GPU.

Parameters

outOffset Out. Guaranteed to be written. Used by HBU_DISCARDABLE buffers which need an offset to the internal ring buffer we've allocated.

Returns: The MTLBuffer in question.

◆ lockImpl()

void* Ogre::MetalHardwareBufferCommon::lockImpl	(	size_t	offset,
		size_t	length,
		LockOptions	options
	)

overridevirtual

Internal implementation of lock()

Reimplemented from Ogre::HardwareBuffer.

◆ unlockImpl()

void Ogre::MetalHardwareBufferCommon::unlockImpl ( void )

overridevirtual

Internal implementation of unlock()

Reimplemented from Ogre::HardwareBuffer.

◆ readData()

void Ogre::MetalHardwareBufferCommon::readData	(	size_t	offset,
		size_t	length,
		void *	pDest
	)

overridevirtual

Reads data from the buffer and places it in the memory pointed to by pDest.

Parameters

offset	The byte offset from the start of the buffer to read
length	The size of the area to read, in bytes
pDest	The area of memory in which to place the data, must be large enough to accommodate the data!

Reimplemented from Ogre::HardwareBuffer.

◆ writeData()

void Ogre::MetalHardwareBufferCommon::writeData	(	size_t	offset,
		size_t	length,
		const void *	pSource,
		bool	discardWholeBuffer = `false`
	)

overridevirtual

Writes data to the buffer from an area of system memory; note that you must ensure that your buffer is big enough.

Parameters

offset	The byte offset from the start of the buffer to start writing
length	The size of the data to write to, in bytes
pSource	The source of the data to be written
discardWholeBuffer	If true, this allows the driver to discard the entire buffer when writing, such that DMA stalls can be avoided; use if you can.

Reimplemented from Ogre::HardwareBuffer.

◆ writeDataImpl()

void Ogre::MetalHardwareBufferCommon::writeDataImpl	(	size_t	offset,
		size_t	length,
		const void *	pSource,
		bool	discardWholeBuffer
	)

◆ copyData()

void Ogre::MetalHardwareBufferCommon::copyData	(	HardwareBuffer &	srcBuffer,
		size_t	srcOffset,
		size_t	dstOffset,
		size_t	length,
		bool	discardWholeBuffer = `false`
	)

overridevirtual

Copy data from another buffer into this one.

Remarks: Note that the source buffer must not be created with the usage HBU_WRITE_ONLY otherwise this will fail.

Parameters

srcBuffer	The buffer from which to read the copied data
srcOffset	Offset in the source buffer at which to start reading
dstOffset	Offset in the destination buffer to start writing
length	Length of the data to copy, in bytes.
discardWholeBuffer	If true, will discard the entire contents of this buffer before copying

Reimplemented from Ogre::HardwareBuffer.

◆ _updateFromShadow()

void Ogre::MetalHardwareBufferCommon::_updateFromShadow ( void )

overridevirtual

Updates the real buffer from the shadow buffer, if required.

Reimplemented from Ogre::HardwareBuffer.

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

OgreMetalHardwareBufferCommon.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MetalHardwareBufferCommon()

◆ ~MetalHardwareBufferCommon()

Member Function Documentation

◆ _notifyDeviceStalled()

◆ getBufferName()

◆ lockImpl()

◆ unlockImpl()

◆ readData()

◆ writeData()

◆ writeDataImpl()

◆ copyData()

◆ _updateFromShadow()