# Ogre::HighLevelGpuProgramManager Class Reference

This ResourceManager manages high-level vertex and fragment programs. More...

`#include <OgreHighLevelGpuProgramManager.h>`

Inheritance diagram for Ogre::HighLevelGpuProgramManager:

List of all members.

## Public Types

typedef std::map< String, HighLevelGpuProgramFactory * > | FactoryMap
typedef HashMap< String, ResourcePtr > | ResourceMap
typedef std::map< ResourceHandle, ResourcePtr > | ResourceHandleMap
typedef MapIterator< ResourceHandleMap > | ResourceMapIterator

## Public Member Functions

| HighLevelGpuProgramManager ()
| ~HighLevelGpuProgramManager ()
void | addFactory (HighLevelGpuProgramFactory *factory)
| Add a new factory object for high-level programs of a given language.
virtual HighLevelGpuProgramPtr | createProgram (const String &name, const String &groupName, const String &language, GpuProgramType gptype)
| Create a new, unloaded HighLevelGpuProgram.
virtual ResourcePtr | create (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.
virtual void | setMemoryBudget (size_t bytes)
| Set a limit on the amount of memory this resource handler may use.
virtual size_t | getMemoryBudget (void) const
| Get the limit on the amount of memory this resource handler may use.
virtual void | unload (const String &name)
| Unloads a single resource by name.
virtual void | unload (ResourceHandle handle)
| Unloads a single resource by handle.
virtual void | unloadAll (void)
| Unloads all resources.
virtual void | reloadAll (void)
| Caused all currently loaded resources to be reloaded.
virtual void | remove (ResourcePtr &r)
| Remove a single resource.
virtual void | remove (const String &name)
| Remove a single resource by name.
virtual void | remove (ResourceHandle handle)
| Remove a single resource by handle.
virtual void | removeAll (void)
| Removes all resources.
virtual ResourcePtr | getByName (const String &name)
| Retrieves a pointer to a resource by name, or null if the resource does not exist.
virtual ResourcePtr | getByHandle (ResourceHandle handle)
| Retrieves a pointer to a resource by handle, or null if the resource does not exist.
virtual bool | resourceExists (const String &name)
| Returns whether the named resource exists in this manager.
virtual bool | resourceExists (ResourceHandle handle)
| Returns whether a resource with the given handle exists in this manager.
virtual void | _notifyResourceTouched (Resource *res)
| Notify this manager that a resource which it manages has been 'touched', ie used.
virtual void | _notifyResourceLoaded (Resource *res)
| Notify this manager that a resource which it manages has been loaded.
virtual void | _notifyResourceUnloaded (Resource *res)
| Notify this manager that a resource which it manages has been unloaded.
virtual ResourcePtr | load (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *loadParams=0)
| 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).
virtual const StringVector & | getScriptPatterns (void) const
| Gets the file patterns which should be used to find scripts for this ResourceManager.
virtual void | parseScript (DataStreamPtr &stream, const String &groupName)
| Parse the definition of a set of resources from a script file.
virtual Real | getLoadingOrder (void) const
| Gets the relative loading order of resources of this type.
const String & | getResourceType (void) const
| Gets a string identifying the type of resource this manager handles.
ResourceMapIterator | getResourceIterator (void)
| Returns an iterator over all resources in this manager.

## Static Public Member Functions

HighLevelGpuProgramManager & | getSingleton (void)
| Override standard Singleton retrieval.
HighLevelGpuProgramManager * | getSingletonPtr (void)
| Override standard Singleton retrieval.

## Protected Member Functions

HighLevelGpuProgramFactory * | getFactory (const String &language)
Resource * | createImpl (const String &name, ResourceHandle handle, const String &group, bool isManual, ManualResourceLoader *loader, const NameValuePairList *params)

Remarks:
  Subclasses must override this method and create a subclass of Resource.

Parameters:

  name | The unique name of the resource
  group | The name of the resource group to attach this new resource to
  isManual | Is this resource manually loaded? If so, you should really populate the loader parameter in order that the load process can call the loader back when loading is required.
  loader | Pointer to a ManualLoader implementation which will be called when the Resource wishes to load (should be supplied if you set isManual to true). You can in fact leave this parameter null if you wish, but the Resource will never be able to reload if anything ever causes it to unload. Therefore provision of a proper ManualLoader instance is strongly recommended.
  createParams | If any parameters are required to create an instance, they should be supplied here as name / value pairs. These do not need to be set on the instance (handled elsewhere), just used if required to differentiate which concrete class is created.

ResourceHandle | getNextHandle (void)
| Allocates the next handle.
virtual void | addImpl (ResourcePtr &res)
| Add a newly created resource to the manager (note weak reference).
virtual void | removeImpl (ResourcePtr &res)
| Remove a resource from this manager; remove it from the lists.
virtual void | checkUsage (void)
| Checks memory usage and pages out if required.
virtual size_t | getMemoryUsage (void) const
| Gets the current memory usage, in bytes.

## Protected Attributes

FactoryMap | mFactories
| Factories capable of creating HighLevelGpuProgram instances.
ResourceHandleMap | mResourcesByHandle
ResourceMap | mResources
ResourceHandle | mNextHandle
size_t | mMemoryBudget
size_t | mMemoryUsage
StringVector | mScriptPatterns
| Patterns to use to look for scripts if supported (e.g. *.overlay).
Real | mLoadOrder
| Loading order relative to other managers, higher is later.
String | mResourceType
| String identifying the resource type this manager handles.

## Static Protected Attributes

HighLevelGpuProgramManager * | ms_Singleton

## Detailed Description

This ResourceManager manages high-level vertex and fragment programs.

Remarks:
  High-level vertex and fragment programs can be used instead of assembler programs as managed by GpuProgramManager; however they typically result in a GpuProgram being created as a derivative of the high-level program. High-level programs are easier to write, and can often be API-independent, unlike assembler programs.

  This class not only manages the programs themselves, it also manages the factory classes which allow the creation of high-level programs using a variety of high-level syntaxes. Plugins can be created which register themselves as high-level program factories and as such the engine can be extended to accept virtually any kind of program provided a plugin is written.

Definition at line 62 of file OgreHighLevelGpuProgramManager.h.

## Member Typedef Documentation

typedef std::map<String, HighLevelGpuProgramFactory*> Ogre::HighLevelGpuProgramManager::FactoryMap

| Definition at line 66 of file OgreHighLevelGpuProgramManager.h.

typedef std::map<ResourceHandle, ResourcePtr> Ogre::ResourceManager::ResourceHandleMap `[inherited]`

| Definition at line 343 of file OgreResourceManager.h.

typedef HashMap< String, ResourcePtr > Ogre::ResourceManager::ResourceMap `[inherited]`

| Definition at line 342 of file OgreResourceManager.h.

typedef MapIterator<ResourceHandleMap> Ogre::ResourceManager::ResourceMapIterator `[inherited]`

| Definition at line 361 of file OgreResourceManager.h. Referenced by Ogre::ResourceManager::getResourceIterator().

## Constructor & Destructor Documentation

Ogre::HighLevelGpuProgramManager::HighLevelGpuProgramManager | ( |  | ) |

Ogre::HighLevelGpuProgramManager::~HighLevelGpuProgramManager | ( |  | ) |

## Member Function Documentation

virtual void Ogre::ResourceManager::_notifyResourceLoaded | ( | Resource * | res | ) | `[virtual, inherited]`

| Notify this manager that a resource which it manages has been loaded.

virtual void Ogre::ResourceManager::_notifyResourceTouched | ( | Resource * | res | ) | `[virtual, inherited]`

| Notify this manager that a resource which it manages has been 'touched', ie used.

virtual void Ogre::ResourceManager::_notifyResourceUnloaded | ( | Resource * | res | ) | `[virtual, inherited]`

| Notify this manager that a resource which it manages has been unloaded.

void Ogre::HighLevelGpuProgramManager::addFactory | ( | HighLevelGpuProgramFactory * | factory | ) |

| Add a new factory object for high-level programs of a given language.

virtual void Ogre::ResourceManager::addImpl | ( | ResourcePtr & | res | ) | `[protected, virtual, inherited]`

| Add a newly created resource to the manager (note weak reference).

virtual void Ogre::ResourceManager::checkUsage | ( | void |  | ) | `[protected, virtual, inherited]`

| Checks memory usage and pages out if required.

virtual ResourcePtr Ogre::ResourceManager::create | ( | const String & | name,
|  | const String & | group,
|  | bool | isManual = false,
|  | ManualResourceLoader * | loader = 0,
|  | const NameValuePairList * | createParams = 0
| ) | `[virtual, inherited]`

Creates a new blank resource, but does not immediately load it.

Remarks:
  Resource managers handle disparate types of resources, so if you want to get at the detailed interface of this resource, you'll have to cast the result to the subclass you know you're creating.

Parameters:

  name | The unique name of the resource
  group | The name of the resource group to attach this new resource to
  isManual | Is this resource manually loaded? If so, you should really populate the loader parameter in order that the load process can call the loader back when loading is required.
  loader | Pointer to a ManualLoader implementation which will be called when the Resource wishes to load (should be supplied if you set isManual to true). You can in fact leave this parameter null if you wish, but the Resource will never be able to reload if anything ever causes it to unload. Therefore provision of a proper ManualLoader instance is strongly recommended.
  createParams | If any parameters are required to create an instance, they should be supplied here as name / value pairs

Resource* Ogre::HighLevelGpuProgramManager::createImpl | ( | const String & | name,
|  | ResourceHandle | handle,
|  | const String & | group,
|  | bool | isManual,
|  | ManualResourceLoader * | loader,
|  | const NameValuePairList * | params
| ) | `[protected, virtual]`

Remarks:
  Subclasses must override this method and create a subclass of Resource.

Parameters:

  name | The unique name of the resource
  group | The name of the resource group to attach this new resource to
  isManual | Is this resource manually loaded? If so, you should really populate the loader parameter in order that the load process can call the loader back when loading is required.
  loader | Pointer to a ManualLoader implementation which will be called when the Resource wishes to load (should be supplied if you set isManual to true). You can in fact leave this parameter null if you wish, but the Resource will never be able to reload if anything ever causes it to unload. Therefore provision of a proper ManualLoader instance is strongly recommended.
  createParams | If any parameters are required to create an instance, they should be supplied here as name / value pairs. These do not need to be set on the instance (handled elsewhere), just used if required to differentiate which concrete class is created.

Implements Ogre::ResourceManager.

virtual HighLevelGpuProgramPtr Ogre::HighLevelGpuProgramManager::createProgram | ( | const String & | name,
|  | const String & | groupName,
|  | const String & | language,
|  | GpuProgramType | gptype
| ) | `[virtual]`

Create a new, unloaded HighLevelGpuProgram.

  This method creates a new program of the type specified as the second and third parameters. You will have to call further methods on the returned program in order to define the program fully before you can load it.

Parameters:

  name | The identifying name of the program
  groupName | The name of the resource group which this program is to be a member of
  language | Code of the language to use (e.g. "cg")
  gptype | The type of program to create

virtual ResourcePtr Ogre::ResourceManager::getByHandle | ( | ResourceHandle | handle | ) | `[virtual, inherited]`

| Retrieves a pointer to a resource by handle, or null if the resource does not exist.

virtual ResourcePtr Ogre::ResourceManager::getByName | ( | const String & | name | ) | `[virtual, inherited]`

| Retrieves a pointer to a resource by name, or null if the resource does not exist.

HighLevelGpuProgramFactory* Ogre::HighLevelGpuProgramManager::getFactory | ( | const String & | language | ) | `[protected]`

virtual Real Ogre::ResourceManager::getLoadingOrder | ( | void |  | ) | const`[virtual, inherited]`

Gets the relative loading order of resources of this type.

Remarks:
  There are dependencies between some kinds of resource in terms of loading order, and this value enumerates that. Higher values load later during bulk loading tasks.

Implements Ogre::ScriptLoader.

Definition at line 296 of file OgreResourceManager.h.

References Ogre::Real.

virtual size_t Ogre::ResourceManager::getMemoryBudget | ( | void |  | ) | const`[virtual, inherited]`

| Get the limit on the amount of memory this resource handler may use.

virtual size_t Ogre::ResourceManager::getMemoryUsage | ( | void |  | ) | const`[protected, virtual, inherited]`

| Gets the current memory usage, in bytes. Definition at line 338 of file OgreResourceManager.h.

ResourceHandle Ogre::ResourceManager::getNextHandle | ( | void |  | ) | `[protected, inherited]`

| Allocates the next handle.

ResourceMapIterator Ogre::ResourceManager::getResourceIterator | ( | void |  | ) | `[inherited]`

Returns an iterator over all resources in this manager.

Note:
  Use of this iterator is NOT thread safe!

Definition at line 366 of file OgreResourceManager.h.

References Ogre::ResourceManager::ResourceMapIterator.

const String& Ogre::ResourceManager::getResourceType | ( | void |  | ) | const`[inherited]`

| Gets a string identifying the type of resource this manager handles. Definition at line 299 of file OgreResourceManager.h. References Ogre::String.

virtual const StringVector& Ogre::ResourceManager::getScriptPatterns | ( | void |  | ) | const`[virtual, inherited]`

Gets the file patterns which should be used to find scripts for this ResourceManager.

Remarks:
  Some resource managers can read script files in order to define resources ahead of time. These resources are added to the available list inside the manager, but none are loaded initially. This allows you to load the items that are used on demand, or to load them all as a group if you wish (through ResourceGroupManager).

  This method lets you determine the file pattern which will be used to identify scripts intended for this manager.

Returns:
  A list of file patterns, in the order they should be searched in.

See also:
  isScriptingSupported, parseScript

Implements Ogre::ScriptLoader.

Definition at line 273 of file OgreResourceManager.h.

References Ogre::StringVector.

HighLevelGpuProgramManager& Ogre::HighLevelGpuProgramManager::getSingleton | ( | void |  | ) | `[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.

Reimplemented from Ogre::Singleton< HighLevelGpuProgramManager >.

HighLevelGpuProgramManager* Ogre::HighLevelGpuProgramManager::getSingletonPtr | ( | void |  | ) | `[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.

Reimplemented from Ogre::Singleton< HighLevelGpuProgramManager >.

virtual ResourcePtr Ogre::ResourceManager::load | ( | const String & | name,
|  | const String & | group,
|  | bool | isManual = false,
|  | ManualResourceLoader * | loader = 0,
|  | const NameValuePairList * | loadParams = 0
| ) | `[virtual, inherited]`

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).

Parameters:

  name | The name of the Resource
  group | The resource group to which this resource will belong
  isManual | Is the resource to be manually loaded? If so, you should provide a value for the loader parameter
  loader | The manual loader which is to perform the required actions when this resource is loaded; only applicable when you specify true for the previous parameter
  loadParams | Optional pointer to a list of name/value pairs containing loading parameters for this type of resource.

Reimplemented in Ogre::BspResourceManager.

virtual void Ogre::ResourceManager::parseScript | ( | DataStreamPtr & | stream,
|  | const String & | groupName
| ) | `[virtual, inherited]`

Parse the definition of a set of resources from a script file.

Remarks:
  Some resource managers can read script files in order to define resources ahead of time. These resources are added to the available list inside the manager, but none are loaded initially. This allows you to load the items that are used on demand, or to load them all as a group if you wish (through ResourceGroupManager).

Parameters:

  stream | Weak reference to a data stream which is the source of the script
  groupName | The name of the resource group that resources which are parsed are to become a member of. If this group is loaded or unloaded, then the resources discovered in this script will be loaded / unloaded with it.

Implements Ogre::ScriptLoader.

Reimplemented in Ogre::FontManager, and Ogre::MaterialManager.

Definition at line 288 of file OgreResourceManager.h.

References Ogre::DataStreamPtr, and Ogre::String.

virtual void Ogre::ResourceManager::reloadAll | ( | void |  | ) | `[virtual, inherited]`

Caused all currently loaded resources to be reloaded.

Remarks:
  All resources currently being held in this manager which are also marked as currently loaded will be unloaded, then loaded again.

virtual void Ogre::ResourceManager::remove | ( | ResourceHandle | handle | ) | `[virtual, inherited]`

Remove a single resource by handle.

Remarks:
  Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
  The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.

  If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::remove | ( | const String & | name | ) | `[virtual, inherited]`

Remove a single resource by name.

Remarks:
  Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
  The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.

  If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::remove | ( | ResourcePtr & | r | ) | `[virtual, inherited]`

Remove a single resource.

Remarks:
  Removes a single resource, meaning it will be removed from the list of valid resources in this manager, also causing it to be unloaded.

Note:
  The word 'Destroy' is not used here, since if any other pointers are referring to this resource, it will persist until they have finished with it; however to all intents and purposes it no longer exists and will likely get destroyed imminently.

  If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::removeAll | ( | void |  | ) | `[virtual, inherited]`

Removes all resources.

Note:
  The word 'Destroy' is not used here, since if any other pointers are referring to these resources, they will persist until they have been finished with; however to all intents and purposes the resources no longer exist and will get destroyed imminently.

  If you do have shared pointers to resources hanging around after the ResourceManager is destroyed, you may get problems on destruction of these resources if they were relying on the manager (especially if it is a plugin). If you find you get problems on shutdown in the destruction of resources, try making sure you release all your shared pointers before you shutdown OGRE.

virtual void Ogre::ResourceManager::removeImpl | ( | ResourcePtr & | res | ) | `[protected, virtual, inherited]`

| Remove a resource from this manager; remove it from the lists.

virtual bool Ogre::ResourceManager::resourceExists | ( | ResourceHandle | handle | ) | `[virtual, inherited]`

| Returns whether a resource with the given handle exists in this manager. Definition at line 221 of file OgreResourceManager.h. References Ogre::SharedPtr< T >::isNull(), and Ogre::ResourceHandle.

virtual bool Ogre::ResourceManager::resourceExists | ( | const String & | name | ) | `[virtual, inherited]`

| Returns whether the named resource exists in this manager. Definition at line 216 of file OgreResourceManager.h. References Ogre::SharedPtr< T >::isNull(), and Ogre::String.

virtual void Ogre::ResourceManager::setMemoryBudget | ( | size_t | bytes | ) | `[virtual, inherited]`

Set a limit on the amount of memory this resource handler may use.

Remarks:
  If, when asked to load a new resource, the manager believes it will exceed this memory budget, it will temporarily unload a resource to make room for the new one. This unloading is not permanent and the Resource is not destroyed; it simply needs to be reloaded when next used.

virtual void Ogre::ResourceManager::unload | ( | ResourceHandle | handle | ) | `[virtual, inherited]`

Unloads a single resource by handle.

Remarks:
  Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
  ResourceGroupManager for unloading of resource groups.

virtual void Ogre::ResourceManager::unload | ( | const String & | name | ) | `[virtual, inherited]`

Unloads a single resource by name.

Remarks:
  Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
  ResourceGroupManager for unloading of resource groups.

virtual void Ogre::ResourceManager::unloadAll | ( | void |  | ) | `[virtual, inherited]`

Unloads all resources.

Remarks:
  Unloaded resources are not removed, they simply free up their memory as much as they can and wait to be reloaded.

See also:
  ResourceGroupManager for unloading of resource groups.

## Member Data Documentation

FactoryMap Ogre::HighLevelGpuProgramManager::mFactories `[protected]`

| Factories capable of creating HighLevelGpuProgram instances. Definition at line 69 of file OgreHighLevelGpuProgramManager.h.

Real Ogre::ResourceManager::mLoadOrder `[protected, inherited]`

| Loading order relative to other managers, higher is later. Definition at line 356 of file OgreResourceManager.h.

size_t Ogre::ResourceManager::mMemoryBudget `[protected, inherited]`

| Definition at line 348 of file OgreResourceManager.h.

size_t Ogre::ResourceManager::mMemoryUsage `[protected, inherited]`

| Definition at line 349 of file OgreResourceManager.h.

ResourceHandle Ogre::ResourceManager::mNextHandle `[protected, inherited]`

| Definition at line 347 of file OgreResourceManager.h.

ResourceMap Ogre::ResourceManager::mResources `[protected, inherited]`

| Definition at line 346 of file OgreResourceManager.h.

ResourceHandleMap Ogre::ResourceManager::mResourcesByHandle `[protected, inherited]`

| Definition at line 345 of file OgreResourceManager.h.

String Ogre::ResourceManager::mResourceType `[protected, inherited]`

| String identifying the resource type this manager handles. Definition at line 358 of file OgreResourceManager.h.

HighLevelGpuProgramManager * Ogre::Singleton< HighLevelGpuProgramManager >::ms_Singleton `[static, protected, inherited]`

| Definition at line 54 of file OgreSingleton.h.

StringVector Ogre::ResourceManager::mScriptPatterns `[protected, inherited]`

| Patterns to use to look for scripts if supported (e.g. *.overlay). Definition at line 354 of file OgreResourceManager.h.

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

- OgreHighLevelGpuProgramManager.h

Copyright © 2000-2005 by The OGRE Team
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Feb 12 13:00:48 2006