OGRE  1.12.12
Object-Oriented Graphics Rendering Engine
Ogre::MetalDiscardBufferManager Class Reference

Metal doesn't support "DISCARD" like D3D9/D3D11 (and OpenGL but often it's broken) where we requested to map a write-only buffer and the API would discard the previous contents (thus allowing us to avoid a stall until the GPU is done with the region) More...

#include <OgreMetalDiscardBufferManager.h>

+ Inheritance diagram for Ogre::MetalDiscardBufferManager:

Classes

struct  Block
 
struct  UnsafeBlock
 

Public Types

typedef std::vector< UnsafeBlockUnsafeBlockVec
 

Public Member Functions

 MetalDiscardBufferManager (MetalDevice *device)
 
 ~MetalDiscardBufferManager ()
 
void _getBlock (MetalDiscardBuffer *discardBuffer)
 For internal use. More...
 
void _notifyDeviceStalled (void)
 
MetalDiscardBuffercreateDiscardBuffer (size_t bufferSize, uint16 alignment)
 Creates a buffer that supports discarding to hold the required size. More...
 
void destroyDiscardBuffer (MetalDiscardBuffer *discardBuffer)
 Destroys an existing MetalDiscardBuffer, releasing its memory. More...
 
MetalDevicegetDevice (void) const
 

Detailed Description

Metal doesn't support "DISCARD" like D3D9/D3D11 (and OpenGL but often it's broken) where we requested to map a write-only buffer and the API would discard the previous contents (thus allowing us to avoid a stall until the GPU is done with the region)

We need Discard for the v1 interfaces. So we need to emulate it. This class does exactly this.

Member Typedef Documentation

◆ UnsafeBlockVec

Constructor & Destructor Documentation

◆ MetalDiscardBufferManager()

Ogre::MetalDiscardBufferManager::MetalDiscardBufferManager ( MetalDevice device)

◆ ~MetalDiscardBufferManager()

Ogre::MetalDiscardBufferManager::~MetalDiscardBufferManager ( )

Member Function Documentation

◆ _notifyDeviceStalled()

void Ogre::MetalDiscardBufferManager::_notifyDeviceStalled ( void  )

◆ _getBlock()

void Ogre::MetalDiscardBufferManager::_getBlock ( MetalDiscardBuffer discardBuffer)

For internal use.

Retrieves a fresh new block. The old block will be returned to a pool until it's safe to reuse again. Used by the DiscardBuffer when map( DISCARD ) is called.

Parameters
discardBufferBuffer to assign a new region.

◆ createDiscardBuffer()

MetalDiscardBuffer* Ogre::MetalDiscardBufferManager::createDiscardBuffer ( size_t  bufferSize,
uint16  alignment 
)

Creates a buffer that supports discarding to hold the required size.

Parameters
bufferSizeRequested size in bytes.
alignmentAlignment requirements.
Returns
A new MetalDiscardBuffer

◆ destroyDiscardBuffer()

void Ogre::MetalDiscardBufferManager::destroyDiscardBuffer ( MetalDiscardBuffer discardBuffer)

Destroys an existing MetalDiscardBuffer, releasing its memory.

Parameters
discardBufferMetalDiscardBuffer to destroy

◆ getDevice()

MetalDevice* Ogre::MetalDiscardBufferManager::getDevice ( void  ) const
inline

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