OGRE-Next  3.0.0
Object-Oriented Graphics Rendering Engine
Ogre::MeshManager Class Referencefinal

Handles the management of mesh resources. More...

#include <OgreMeshManager2.h>

+ Inheritance diagram for Ogre::MeshManager:

Public Member Functions

 MeshManager ()
 
 ~MeshManager () override
 
void _initialise ()
 Initialises the manager, only to be called by OGRE internally. More...
 
void _setVaoManager (VaoManager *vaoManager)
 
MeshPtr create (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *createParams=0)
 Create a new mesh. More...
 
MeshPtr createByImportingV1 (const String &name, const String &groupName, v1::Mesh *mesh, bool halfPos, bool halfTexCoords, bool qTangents, bool halfPose=true)
 Imports a v1 mesh to new mesh, with optional optimization conversions. More...
 
MeshPtr createManual (const String &name, const String &groupName, ManualResourceLoader *loader=0)
 Creates a new Mesh specifically for manual definition rather than loading from an object file. More...
 
ResourceCreateOrRetrieveResult createOrRetrieve (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *params=0, BufferType vertexBufferType=BT_IMMUTABLE, BufferType indexBufferType=BT_IMMUTABLE, bool vertexBufferShadowed=true, bool indexBufferShadowed=true)
 Create a new mesh, or retrieve an existing one with the same name if it already exists. More...
 
Real getBoundsPaddingFactor ()
 Gets the factor by which the bounding box of an entity is padded. More...
 
MeshPtr getByName (const String &name, const String &groupName=ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME)
 Get a resource by name. More...
 
MeshPtr load (const String &filename, const String &groupName, BufferType vertexBufferType=BT_IMMUTABLE, BufferType indexBufferType=BT_IMMUTABLE, bool vertexBufferShadowed=true, bool indexBufferShadowed=true)
 Loads a mesh from a file, making it immediately available for use. More...
 
void loadResource (Resource *res) override
 Sets the listener used to control mesh loading through the serializer. More...
 
MeshPtr prepare (const String &filename, const String &groupName, BufferType vertexBufferType=BT_IMMUTABLE, BufferType indexBufferType=BT_IMMUTABLE, bool vertexBufferShadowed=true, bool indexBufferShadowed=true)
 Prepares a mesh for loading from a file. More...
 
void setBoundsPaddingFactor (Real paddingFactor)
 Sets the factor by which the bounding box of an entity is padded. More...
 
- Public Member Functions inherited from Ogre::ResourceManager
 ResourceManager ()
 
 ~ResourceManager () override
 
virtual void _notifyResourceLoaded (Resource *res)
 Notify this manager that a resource which it manages has been loaded. More...
 
virtual void _notifyResourceTouched (Resource *res)
 Notify this manager that a resource which it manages has been 'touched', i.e. More...
 
virtual void _notifyResourceUnloaded (Resource *res)
 Notify this manager that a resource which it manages has been unloaded. More...
 
virtual ResourceCreateOrRetrieveResult createOrRetrieve (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *createParams=0)
 Create a new resource, or retrieve an existing one with the same name if it already exists. More...
 
virtual ResourcePtr createResource (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *createParams=0)
 Creates a new blank resource, but does not immediately load it. More...
 
void destroyAllResourcePools ()
 destroy all pools More...
 
void destroyResourcePool (const String &name)
 Destroy a resource pool. More...
 
void destroyResourcePool (ResourcePool *pool)
 Destroy a resource pool. More...
 
virtual ResourcePtr getByHandle (ResourceHandle handle)
 Retrieves a pointer to a resource by handle, or null if the resource does not exist. More...
 
Real getLoadingOrder () const override
 Gets the relative loading order of resources of this type. More...
 
virtual size_t getMemoryBudget () const
 Get the limit on the amount of memory this resource handler may use. More...
 
virtual size_t getMemoryUsage () const
 Gets the current memory usage, in bytes. More...
 
virtual ResourcePtr getResourceByName (const String &name, const String &groupName=ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME)
 Retrieves a pointer to a resource by name, or null if the resource does not exist. More...
 
ResourceMapIterator getResourceIterator ()
 Returns an iterator over all resources in this manager. More...
 
ResourcePoolgetResourcePool (const String &name)
 Create a resource pool, or reuse one that already exists. More...
 
const StringgetResourceType () const
 Gets a string identifying the type of resource this manager handles. More...
 
const StringVectorgetScriptPatterns () const override
 Gets the file patterns which should be used to find scripts for this ResourceManager. More...
 
virtual bool getVerbose ()
 Gets whether this manager and its resources habitually produce log output. More...
 
virtual ResourcePtr load (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *loadParams=0, bool backgroundThread=false)
 Generic load method, used to create a Resource specific to this ResourceManager without using one of the specialised 'load' methods (containing per-Resource-type parameters). More...
 
void parseScript (DataStreamPtr &stream, const String &groupName) override
 Parse the definition of a set of resources from a script file. More...
 
virtual ResourcePtr prepare (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *loadParams=0, bool backgroundThread=false)
 Generic prepare method, used to create a Resource specific to this ResourceManager without using one of the specialised 'prepare' methods (containing per-Resource-type parameters). More...
 
void reloadAll (bool reloadableOnly=true)
 Caused all currently loaded resources to be reloaded. More...
 
virtual void reloadAll (Resource::LoadingFlags flags)
 Caused all currently loaded resources to be reloaded. More...
 
void reloadUnreferencedResources (bool reloadableOnly=true)
 Caused all currently loaded but not referenced by any other object resources to be reloaded. More...
 
virtual void remove (const ResourcePtr &r)
 Remove a single resource. More...
 
virtual void remove (const String &name)
 Remove a single resource by name. More...
 
virtual void remove (ResourceHandle handle)
 Remove a single resource by handle. More...
 
virtual void removeAll ()
 Removes all resources. More...
 
virtual void removeUnreferencedResources (bool reloadableOnly=true)
 Remove all resources which are not referenced by any other object. More...
 
virtual bool resourceExists (const String &name)
 Returns whether the named resource exists in this manager. More...
 
virtual bool resourceExists (ResourceHandle handle)
 Returns whether a resource with the given handle exists in this manager. More...
 
virtual void setMemoryBudget (size_t bytes)
 Set a limit on the amount of memory this resource handler may use. More...
 
virtual void setVerbose (bool v)
 Sets whether this manager and its resources habitually produce log output. More...
 
virtual void unload (const String &name)
 Unloads a single resource by name. More...
 
virtual void unload (ResourceHandle handle)
 Unloads a single resource by handle. More...
 
void unloadAll (bool reloadableOnly=true)
 Unloads all resources. More...
 
virtual void unloadAll (Resource::LoadingFlags flags)
 Unloads all resources. More...
 
void unloadUnreferencedResources (bool reloadableOnly=true)
 Unload all resources which are not referenced by any other object. More...
 
- Public Member Functions inherited from Ogre::ScriptLoader
virtual ~ScriptLoader ()
 
- Public Member Functions inherited from Ogre::Singleton< MeshManager >
 Singleton ()
 
 ~Singleton ()
 
- Public Member Functions inherited from Ogre::ManualResourceLoader
 ManualResourceLoader ()
 
virtual ~ManualResourceLoader ()
 
virtual void prepareResource (Resource *resource)
 Called when a resource wishes to load. More...
 

Static Public Member Functions

static MeshManagergetSingleton ()
 Override standard Singleton retrieval. More...
 
static MeshManagergetSingletonPtr ()
 Override standard Singleton retrieval. More...
 
- Static Public Member Functions inherited from Ogre::Singleton< MeshManager >
static MeshManagergetSingleton ()
 
static MeshManagergetSingletonPtr ()
 

Additional Inherited Members

- Public Types inherited from Ogre::ResourceManager
typedef std::pair< ResourcePtr, bool > ResourceCreateOrRetrieveResult
 
typedef map< ResourceHandle, ResourcePtr >::type ResourceHandleMap
 
typedef unordered_map< String, ResourcePtr >::type ResourceMap
 
typedef MapIterator< ResourceHandleMapResourceMapIterator
 
typedef unordered_map< String, ResourceMap >::type ResourceWithGroupMap
 
- Public Attributes inherited from Ogre::ResourceManager
 OGRE_AUTO_MUTEX
 

Detailed Description

Handles the management of mesh resources.

Remarks
This class deals with the runtime management of mesh data; like other resource managers it handles the creation of resources (in this case mesh data), working within a fixed memory budget.

Constructor & Destructor Documentation

◆ MeshManager()

Ogre::MeshManager::MeshManager ( )

◆ ~MeshManager()

Ogre::MeshManager::~MeshManager ( )
override

Member Function Documentation

◆ _initialise()

void Ogre::MeshManager::_initialise ( )

Initialises the manager, only to be called by OGRE internally.

◆ _setVaoManager()

void Ogre::MeshManager::_setVaoManager ( VaoManager vaoManager)

◆ create()

MeshPtr Ogre::MeshManager::create ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList createParams = 0 
)

Create a new mesh.

See also
ResourceManager::createResource

◆ createByImportingV1()

MeshPtr Ogre::MeshManager::createByImportingV1 ( const String name,
const String groupName,
v1::Mesh mesh,
bool  halfPos,
bool  halfTexCoords,
bool  qTangents,
bool  halfPose = true 
)

Imports a v1 mesh to new mesh, with optional optimization conversions.

Remarks
The vertex stream will be converted to a single interleaved buffer; i.e. if the original mesh had 3 vertex buffers: [1] = POSITION, POSITION, POSITION, POSITION, ... [2] = NORMALS, NORMALS, NORMALS, NORMALS, ... [3] = UV, UV, UV, UV, ... then the v2 mesh will have only 1 vertex buffer: [1] = POSITION NORMALS UV, POS NORM UV, POS NORM UV, POS NORM UV, ... Resulting mesh is reloadable as long as original mesh exists and is reloadable.
Parameters
nameThe name to give the new mesh
groupNameThe name of the resource group to assign the mesh to
meshThe source v1 mesh to convert from. You can unload but should not delete this pointer if you want to be able to reload the converted mesh.
halfPosTrue if you want to convert the position data to VET_HALF4 format. Recommended on desktop to reduce memory and bandwidth requirements. Rarely the extra precision is needed. Unfortuntately on mobile, not all ES2 devices support VET_HALF4.
halfTexCoordsTrue if you want to convert the position data to VET_HALF2 or VET_HALF4 format. Same recommendations as halfPos.
qTangentsTrue if you want to generate tangent and reflection information (modifying the original v1 mesh) and convert this data to a QTangent, requiring VET_SHORT4_SNORM (8 bytes vs 28 bytes to store normals, tangents and reflection). Needs much less space, trading for more ALU ops in the vertex shader for decoding the QTangent. Highly recommended on both desktop and mobile if you need tangents (i.e. normal mapping).
halfPoseTrue if you want the pose buffer to have pixel format PF_FLOAT16_RGBA which uses significantly less memory. Otherwise it is created with pixel format PF_FLOAT32_RGBA. Rarely the extra precision is needed.

◆ createManual()

MeshPtr Ogre::MeshManager::createManual ( const String name,
const String groupName,
ManualResourceLoader loader = 0 
)

Creates a new Mesh specifically for manual definition rather than loading from an object file.

Remarks
Note that once you've defined your mesh, you must call Mesh::_setBounds and Mesh::_setBoundingRadius in order to define the bounds of your mesh. In previous versions of OGRE you could call Mesh::_updateBounds, but OGRE's support of write-only vertex buffers makes this no longer appropriate.
Parameters
nameThe name to give the new mesh
groupNameThe name of the resource group to assign the mesh to
loaderManualResourceLoader which will be called to load this mesh when the time comes. It is recommended that you populate this field in order that the mesh can be rebuilt should the need arise

◆ createOrRetrieve()

ResourceCreateOrRetrieveResult Ogre::MeshManager::createOrRetrieve ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList params = 0,
BufferType  vertexBufferType = BT_IMMUTABLE,
BufferType  indexBufferType = BT_IMMUTABLE,
bool  vertexBufferShadowed = true,
bool  indexBufferShadowed = true 
)

Create a new mesh, or retrieve an existing one with the same name if it already exists.

Parameters
vertexBufferUsageThe usage flags with which the vertex buffer(s) will be created
indexBufferUsageThe usage flags with which the index buffer(s) created for this mesh will be created with.
vertexBufferShadowedIf true, the vertex buffers will be shadowed by system memory copies for faster read access
indexBufferShadowedIf true, the index buffers will be shadowed by system memory copies for faster read access
See also
ResourceManager::createOrRetrieve

◆ getBoundsPaddingFactor()

Real Ogre::MeshManager::getBoundsPaddingFactor ( )

Gets the factor by which the bounding box of an entity is padded.

Default is 0.01

◆ getByName()

MeshPtr Ogre::MeshManager::getByName ( const String name,
const String groupName = ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME 
)

Get a resource by name.

See also
ResourceManager::getResourceByName

◆ getSingleton()

static MeshManager& Ogre::MeshManager::getSingleton ( )
static

Override standard Singleton retrieval.

Remarks
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.
This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

◆ getSingletonPtr()

static MeshManager* Ogre::MeshManager::getSingletonPtr ( )
static

Override standard Singleton retrieval.

Remarks
Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll.
This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors.

◆ load()

MeshPtr Ogre::MeshManager::load ( const String filename,
const String groupName,
BufferType  vertexBufferType = BT_IMMUTABLE,
BufferType  indexBufferType = BT_IMMUTABLE,
bool  vertexBufferShadowed = true,
bool  indexBufferShadowed = true 
)

Loads a mesh from a file, making it immediately available for use.

Note
If the model has already been created (prepared or loaded), the existing instance will be returned.
Remarks
Ogre loads model files from it's own proprietary format called .mesh. This is because having a single file format is better for runtime performance, and we also have control over pre-processed data (such as collision boxes, LOD reductions etc).
Parameters
filenameThe name of the .mesh file
groupNameThe name of the resource group to assign the mesh to
vertexBufferUsageThe usage flags with which the vertex buffer(s) will be created
indexBufferUsageThe usage flags with which the index buffer(s) created for this mesh will be created with.
vertexBufferShadowedIf true, the vertex buffers will be shadowed by system memory copies for faster read access
indexBufferShadowedIf true, the index buffers will be shadowed by system memory copies for faster read access

◆ loadResource()

void Ogre::MeshManager::loadResource ( Resource res)
overridevirtual

Sets the listener used to control mesh loading through the serializer.

Gets the listener used to control mesh loading through the serializer.

See also
ManualResourceLoader::loadResource

Implements Ogre::ManualResourceLoader.

◆ prepare()

MeshPtr Ogre::MeshManager::prepare ( const String filename,
const String groupName,
BufferType  vertexBufferType = BT_IMMUTABLE,
BufferType  indexBufferType = BT_IMMUTABLE,
bool  vertexBufferShadowed = true,
bool  indexBufferShadowed = true 
)

Prepares a mesh for loading from a file.

This does the IO in advance of the call to load().

Note
If the model has already been created (prepared or loaded), the existing instance will be returned.
Remarks
Ogre loads model files from it's own proprietary format called .mesh. This is because having a single file format is better for runtime performance, and we also have control over pre-processed data (such as collision boxes, LOD reductions etc).
Parameters
filenameThe name of the .mesh file
groupNameThe name of the resource group to assign the mesh to
vertexBufferUsageThe usage flags with which the vertex buffer(s) will be created
indexBufferUsageThe usage flags with which the index buffer(s) created for this mesh will be created with.
vertexBufferShadowedIf true, the vertex buffers will be shadowed by system memory copies for faster read access
indexBufferShadowedIf true, the index buffers will be shadowed by system memory copies for faster read access

◆ setBoundsPaddingFactor()

void Ogre::MeshManager::setBoundsPaddingFactor ( Real  paddingFactor)

Sets the factor by which the bounding box of an entity is padded.


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