OGRE  14.1
Object-Oriented Graphics Rendering Engine
Ogre::GLHardwareBufferManager Class Reference

Implementation of HardwareBufferManager for OpenGL. More...

#include <OgreGLHardwareBufferManager.h>

+ Inheritance diagram for Ogre::GLHardwareBufferManager:

Public Member Functions

 GLHardwareBufferManager ()
 
 ~GLHardwareBufferManager ()
 
void * allocateScratch (uint32 size)
 Allocator method to allow us to use a pool of memory as a scratch area for hardware buffers. More...
 
HardwareIndexBufferSharedPtr createIndexBuffer (HardwareIndexBuffer::IndexType itype, size_t numIndexes, HardwareBuffer::Usage usage, bool useShadowBuffer=false) override
 Create a hardware vertex buffer. More...
 
RenderToVertexBufferSharedPtr createRenderToVertexBuffer () override
 Create a render to vertex buffer. More...
 
HardwareVertexBufferSharedPtr createVertexBuffer (size_t vertexSize, size_t numVerts, HardwareBuffer::Usage usage, bool useShadowBuffer=false) override
 Creates a vertex buffer. More...
 
void deallocateScratch (void *ptr)
 
size_t getGLMapBufferThreshold () const
 Threshold after which glMapBuffer is used and not glBufferSubData. More...
 
void setGLMapBufferThreshold (const size_t value)
 
- Public Member Functions inherited from Ogre::HardwareBufferManager
 HardwareBufferManager ()
 
 ~HardwareBufferManager ()
 
- Public Member Functions inherited from Ogre::HardwareBufferManagerBase
 HardwareBufferManagerBase ()
 
virtual ~HardwareBufferManagerBase ()
 
void _forceReleaseBufferCopies (const HardwareVertexBufferSharedPtr &sourceBuffer)
 Internal method that forces the release of copies of a given buffer. More...
 
void _freeUnusedBufferCopies (void)
 Free all unused vertex buffer copies. More...
 
void _notifyVertexBufferDestroyed (HardwareVertexBuffer *buf)
 Notification that a hardware vertex buffer has been destroyed. More...
 
void _releaseBufferCopies (bool forceFreeUnused=false)
 Internal method for releasing all temporary buffers; is called by OGRE. More...
 
HardwareVertexBufferSharedPtr allocateVertexBufferCopy (const HardwareVertexBufferSharedPtr &sourceBuffer, HardwareBufferLicensee *licensee, bool copyData=false)
 Allocates a copy of a given vertex buffer. More...
 
virtual HardwareBufferPtr createUniformBuffer (size_t sizeBytes, HardwareBufferUsage usage=HBU_CPU_TO_GPU, bool useShadowBuffer=false)
 Create uniform buffer. More...
 
VertexBufferBindingcreateVertexBufferBinding (void)
 Creates a new VertexBufferBinding. More...
 
VertexDeclarationcreateVertexDeclaration (void)
 Creates a new vertex declaration. More...
 
void destroyVertexBufferBinding (VertexBufferBinding *binding)
 Destroys a VertexBufferBinding. More...
 
void destroyVertexDeclaration (VertexDeclaration *decl)
 Destroys a vertex declaration. More...
 
void releaseVertexBufferCopy (const HardwareVertexBufferSharedPtr &bufferCopy)
 Manually release a vertex buffer copy for others to subsequently use. More...
 
void touchVertexBufferCopy (const HardwareVertexBufferSharedPtr &bufferCopy)
 Tell engine that the vertex buffer copy intent to reuse. More...
 
- Public Member Functions inherited from Ogre::Singleton< HardwareBufferManager >
 Singleton (void)
 
 ~Singleton (void)
 

Static Public Member Functions

static GLenum getGLType (unsigned int type)
 Utility function to get the correct GL type based on VET's. More...
 
static GLenum getGLUsage (unsigned int usage)
 Utility function to get the correct GL usage based on HBU's. More...
 
- Static Public Member Functions inherited from Ogre::HardwareBufferManager
static HardwareBufferManagergetSingleton (void)
 Get the singleton instance. More...
 
static HardwareBufferManagergetSingletonPtr (void)
 Get the singleton instance. More...
 
- Static Public Member Functions inherited from Ogre::Singleton< HardwareBufferManager >
static HardwareBufferManagergetSingleton (void)
 Get the singleton instance. More...
 
static HardwareBufferManagergetSingletonPtr (void)
 Get the singleton instance. More...
 

Detailed Description

Implementation of HardwareBufferManager for OpenGL.

Constructor & Destructor Documentation

◆ GLHardwareBufferManager()

Ogre::GLHardwareBufferManager::GLHardwareBufferManager ( )

◆ ~GLHardwareBufferManager()

Ogre::GLHardwareBufferManager::~GLHardwareBufferManager ( )

Member Function Documentation

◆ createVertexBuffer()

HardwareVertexBufferSharedPtr Ogre::GLHardwareBufferManager::createVertexBuffer ( size_t  vertexSize,
size_t  numVerts,
HardwareBuffer::Usage  usage,
bool  useShadowBuffer = false 
)
overridevirtual

Creates a vertex buffer.

Implements Ogre::HardwareBufferManagerBase.

◆ createIndexBuffer()

HardwareIndexBufferSharedPtr Ogre::GLHardwareBufferManager::createIndexBuffer ( HardwareIndexBuffer::IndexType  itype,
size_t  numIndexes,
HardwareBuffer::Usage  usage,
bool  useShadowBuffer = false 
)
overridevirtual

Create a hardware vertex buffer.

Implements Ogre::HardwareBufferManagerBase.

◆ createRenderToVertexBuffer()

RenderToVertexBufferSharedPtr Ogre::GLHardwareBufferManager::createRenderToVertexBuffer ( )
overridevirtual

Create a render to vertex buffer.

Reimplemented from Ogre::HardwareBufferManagerBase.

◆ getGLUsage()

static GLenum Ogre::GLHardwareBufferManager::getGLUsage ( unsigned int  usage)
static

Utility function to get the correct GL usage based on HBU's.

◆ getGLType()

static GLenum Ogre::GLHardwareBufferManager::getGLType ( unsigned int  type)
static

Utility function to get the correct GL type based on VET's.

◆ allocateScratch()

void* Ogre::GLHardwareBufferManager::allocateScratch ( uint32  size)

Allocator method to allow us to use a pool of memory as a scratch area for hardware buffers.

This is because glMapBuffer is incredibly inefficient, seemingly no matter what options we give it. So for the period of lock/unlock, we will instead allocate a section of a local memory pool, and use glBufferSubDataARB / glGetBufferSubDataARB instead.

◆ deallocateScratch()

void Ogre::GLHardwareBufferManager::deallocateScratch ( void *  ptr)
See also
allocateScratch

◆ getGLMapBufferThreshold()

size_t Ogre::GLHardwareBufferManager::getGLMapBufferThreshold ( ) const

Threshold after which glMapBuffer is used and not glBufferSubData.

◆ setGLMapBufferThreshold()

void Ogre::GLHardwareBufferManager::setGLMapBufferThreshold ( const size_t  value)

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