OGRE  1.11.4
Object-Oriented Graphics Rendering Engine
Ogre::TextureManager Class Referenceabstract

Class for loading & managing textures. More...

#include <OgreTextureManager.h>

+ Inheritance diagram for Ogre::TextureManager:

Public Types

typedef std::pair< ResourcePtr, bool > ResourceCreateOrRetrieveResult
 
typedef std::map< ResourceHandle, ResourcePtrResourceHandleMap
 
typedef std::unordered_map< String, ResourcePtrResourceMap
 
typedef MapIterator< ResourceHandleMapResourceMapIterator
 
typedef std::unordered_map< String, ResourceMapResourceWithGroupMap
 

Public Member Functions

 TextureManager (void)
 
virtual ~TextureManager ()
 
const TexturePtr_getWarningTexture ()
 Internal method to create a warning texture (bound when a texture unit is blank) More...
 
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...
 
TexturePtr create (const String &name, const String &group, bool isManual=false, ManualResourceLoader *loader=0, const NameValuePairList *createParams=0)
 Create a new texture. More...
 
virtual TexturePtr createManual (const String &name, const String &group, TextureType texType, uint width, uint height, uint depth, int numMipmaps, PixelFormat format, int usage=TU_DEFAULT, ManualResourceLoader *loader=0, bool hwGammaCorrection=false, uint fsaa=0, const String &fsaaHint=BLANKSTRING)
 Create a manual texture with specified width, height and depth (not loaded from a file). More...
 
TexturePtr createManual (const String &name, const String &group, TextureType texType, uint width, uint height, int numMipmaps, PixelFormat format, int usage=TU_DEFAULT, ManualResourceLoader *loader=0, bool hwGammaCorrection=false, uint fsaa=0, const String &fsaaHint=BLANKSTRING)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More...
 
ResourceCreateOrRetrieveResult createOrRetrieve (const String &name, const String &group, bool isManual, ManualResourceLoader *loader, const NameValuePairList *createParams, TextureType texType=TEX_TYPE_2D, int numMipmaps=MIP_DEFAULT, Real gamma=1.0f, bool isAlpha=false, PixelFormat desiredFormat=PF_UNKNOWN, bool hwGammaCorrection=false)
 
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...
 
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...
 
SamplerPtr createSampler (const String &name=BLANKSTRING)
 create a new sampler More...
 
void destroyAllResourcePools ()
 destroy all pools More...
 
void destroyResourcePool (ResourcePool *pool)
 Destroy a resource pool. More...
 
void destroyResourcePool (const String &name)
 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...
 
TexturePtr getByName (const String &name, const String &groupName=RGN_DEFAULT)
 Retrieves a pointer to a resource by name, or null if the resource does not exist. More...
 
virtual uint32 getDefaultNumMipmaps ()
 Gets the default number of mipmaps to be used for loaded textures. More...
 
const SamplerPtrgetDefaultSampler ()
 get the default sampler More...
 
Real getLoadingOrder (void) const
 Gets the relative loading order of resources of this type. More...
 
size_t getMemoryBudget (void) const
 Get the limit on the amount of memory this resource handler may use. More...
 
size_t getMemoryUsage (void) const
 Gets the current memory usage, in bytes. More...
 
virtual PixelFormat getNativeFormat (TextureType ttype, PixelFormat format, int usage)=0
 Gets the format which will be natively used for a requested format given the constraints of the current device. More...
 
virtual ushort getPreferredFloatBitDepth (void) const
 Gets preferred bit depth for float pixel format textures. More...
 
virtual ushort getPreferredIntegerBitDepth (void) const
 Gets preferred bit depth for integer pixel format textures. More...
 
virtual ResourcePtr getResourceByName (const String &name, const String &groupName=RGN_DEFAULT)
 Retrieves a pointer to a resource by name, or null if the resource does not exist. More...
 
ResourceMapIterator getResourceIterator (void)
 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 (void) const
 Gets a string identifying the type of resource this manager handles. More...
 
const SamplerPtrgetSampler (const String &name) const
 retrieve an named sampler More...
 
const StringVectorgetScriptPatterns (void) const
 Gets the file patterns which should be used to find scripts for this ResourceManager. More...
 
bool getVerbose (void)
 Gets whether this manager and its resources habitually produce log output. More...
 
virtual bool isEquivalentFormatSupported (TextureType ttype, PixelFormat format, int usage)
 Returns whether this render system can support the texture format requested with the given usage options, or another format with no quality reduction. More...
 
virtual bool isFormatSupported (TextureType ttype, PixelFormat format, int usage)
 Returns whether this render system can natively support the precise texture format requested with the given usage options. More...
 
virtual bool isHardwareFilteringSupported (TextureType ttype, PixelFormat format, int usage, bool preciseFormatOnly=false)
 Returns whether this render system has hardware filtering supported for the texture format requested with the given usage options. More...
 
TexturePtr load (const String &name, const String &group, TextureType texType=TEX_TYPE_2D, int numMipmaps=MIP_DEFAULT, Real gamma=1.0f, bool isAlpha=false, PixelFormat desiredFormat=PF_UNKNOWN, bool hwGammaCorrection=false)
 Loads a texture from a file. More...
 
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...
 
virtual TexturePtr loadImage (const String &name, const String &group, const Image &img, TextureType texType=TEX_TYPE_2D, int numMipmaps=MIP_DEFAULT, Real gamma=1.0f, bool isAlpha=false, PixelFormat desiredFormat=PF_UNKNOWN, bool hwGammaCorrection=false)
 Loads a texture from an Image object. More...
 
virtual TexturePtr loadRawData (const String &name, const String &group, DataStreamPtr &stream, ushort width, ushort height, PixelFormat format, TextureType texType=TEX_TYPE_2D, int numMipmaps=MIP_DEFAULT, Real gamma=1.0f, bool hwGammaCorrection=false)
 Loads a texture from a raw data stream. More...
 
void parseScript (DataStreamPtr &stream, const String &groupName)
 Parse the definition of a set of resources from a script file. More...
 
TexturePtr prepare (const String &name, const String &group, TextureType texType=TEX_TYPE_2D, int numMipmaps=MIP_DEFAULT, Real gamma=1.0f, bool isAlpha=false, PixelFormat desiredFormat=PF_UNKNOWN, bool hwGammaCorrection=false)
 Prepares to loads a texture from a file. More...
 
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...
 
void remove (const ResourcePtr &r)
 Remove a single resource. More...
 
void remove (const String &name, const String &group=RGN_DEFAULT)
 
void remove (ResourceHandle handle)
 
virtual void removeAll (void)
 Removes all resources. More...
 
virtual void removeUnreferencedResources (bool reloadableOnly=true)
 Remove all resources which are not referenced by any other object. More...
 
bool resourceExists (const String &name, const String &group=RGN_DEFAULT)
 Returns whether the named resource exists in this manager. More...
 
bool resourceExists (ResourceHandle handle)
 Returns whether a resource with the given handle exists in this manager. More...
 
virtual void setDefaultNumMipmaps (uint32 num)
 Sets the default number of mipmaps to be used for loaded textures, for when textures are loaded automatically (e.g. More...
 
void setMemoryBudget (size_t bytes)
 Set a limit on the amount of memory this resource handler may use. More...
 
virtual void setPreferredBitDepths (ushort integerBits, ushort floatBits, bool reloadTextures=true)
 Sets preferred bit depth for integer and float pixel format. More...
 
virtual void setPreferredFloatBitDepth (ushort bits, bool reloadTextures=true)
 Sets preferred bit depth for float pixel format textures. More...
 
virtual void setPreferredIntegerBitDepth (ushort bits, bool reloadTextures=true)
 Sets preferred bit depth for integer pixel format textures. More...
 
void setVerbose (bool v)
 Sets whether this manager and its resources habitually produce log output. More...
 
void unload (const String &name, const String &group=RGN_DEFAULT)
 Unloads a single resource by name. More...
 
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...
 

Static Public Member Functions

static TextureManagergetSingleton (void)
 Get the singleton instance. More...
 
static TextureManagergetSingletonPtr (void)
 Get the singleton instance. More...
 

Public Attributes

 OGRE_AUTO_MUTEX
 

Detailed Description

Class for loading & managing textures.

Remarks
Note that this class is abstract - the particular RenderSystem that is in use at the time will create a concrete subclass of this. Note that the concrete class will be available via the abstract singleton obtained from TextureManager::getSingleton(), but you should not assume that it is available until you have a) initialised Ogre (after selecting a RenderSystem and calling initialise from the Root object), and b) created at least one window - this may be done at the same time as part a if you allow Ogre to autocreate one.

Member Typedef Documentation

◆ ResourceCreateOrRetrieveResult

◆ ResourceMap

typedef std::unordered_map< String, ResourcePtr > Ogre::ResourceManager::ResourceMap
inherited

◆ ResourceWithGroupMap

typedef std::unordered_map< String, ResourceMap > Ogre::ResourceManager::ResourceWithGroupMap
inherited

◆ ResourceHandleMap

◆ ResourceMapIterator

Constructor & Destructor Documentation

◆ TextureManager()

Ogre::TextureManager::TextureManager ( void  )

◆ ~TextureManager()

virtual Ogre::TextureManager::~TextureManager ( )
virtual

Member Function Documentation

◆ createSampler()

SamplerPtr Ogre::TextureManager::createSampler ( const String name = BLANKSTRING)
inline

create a new sampler

References OgreAssert.

◆ getSampler()

const SamplerPtr& Ogre::TextureManager::getSampler ( const String name) const
inline

◆ create()

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

Create a new texture.

Parameters
nameThe unique name of the Resource
groupThe name of the resource group to attach this new resource to
isManualIs 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.
loaderPointer 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.
createParamsIf any parameters are required to create an instance, they should be supplied here as name / value pairs

◆ getByName()

TexturePtr Ogre::TextureManager::getByName ( const String name,
const String groupName = RGN_DEFAULT 
)

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

◆ createOrRetrieve() [1/2]

Ogre::TextureManager::createOrRetrieve ( const String name,
const String group,
bool  isManual,
ManualResourceLoader loader,
const NameValuePairList createParams,
TextureType  texType = TEX_TYPE_2D,
int  numMipmaps = MIP_DEFAULT,
Real  gamma = 1.0f,
bool  isAlpha = false,
PixelFormat  desiredFormat = PF_UNKNOWN,
bool  hwGammaCorrection = false 
)

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

Parameters
nameThe unique name of the Resource
groupThe name of the resource group to attach this new resource to
isManualIs 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.
loaderPointer 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.
createParamsIf any parameters are required to create an instance, they should be supplied here as name / value pairs
texTypeThe type of texture to load/create, defaults to normal 2D textures
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
gammaThe gamma adjustment factor to apply to this texture (brightening/darkening)
isAlphaOnly applicable to greyscale images. If true, specifies that the image should be loaded into an alpha texture rather than a single channel colour texture - useful for fixed-function systems.
desiredFormatThe format you would like to have used instead of the format being based on the contents of the texture
hwGammaCorrectionPass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.

◆ prepare() [1/2]

TexturePtr Ogre::TextureManager::prepare ( const String name,
const String group,
TextureType  texType = TEX_TYPE_2D,
int  numMipmaps = MIP_DEFAULT,
Real  gamma = 1.0f,
bool  isAlpha = false,
PixelFormat  desiredFormat = PF_UNKNOWN,
bool  hwGammaCorrection = false 
)

Prepares to loads a texture from a file.

Parameters
nameThe file to load, or a String identifier in some cases
groupThe name of the resource group to assign the texture to
texTypeThe type of texture to load/create, defaults to normal 2D textures
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
gammaThe gamma adjustment factor to apply to this texture (brightening/darkening)
isAlphaOnly applicable to greyscale images. If true, specifies that the image should be loaded into an alpha texture rather than a single channel colour texture - useful for fixed-function systems.
desiredFormatThe format you would like to have used instead of the format being based on the contents of the texture; the manager reserves the right to create a different format for the texture if the original format is not available in this context.
hwGammaCorrectionpass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.

◆ load() [1/2]

TexturePtr Ogre::TextureManager::load ( const String name,
const String group,
TextureType  texType = TEX_TYPE_2D,
int  numMipmaps = MIP_DEFAULT,
Real  gamma = 1.0f,
bool  isAlpha = false,
PixelFormat  desiredFormat = PF_UNKNOWN,
bool  hwGammaCorrection = false 
)

Loads a texture from a file.

Parameters
nameThe file to load, or a String identifier in some cases
groupThe name of the resource group to assign the texture to
texTypeThe type of texture to load/create, defaults to normal 2D textures
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
gammaThe gamma adjustment factor to apply to this texture (brightening/darkening)
isAlphaOnly applicable to greyscale images. If true, specifies that the image should be loaded into an alpha texture rather than a single channel colour texture - useful for fixed-function systems.
desiredFormatThe format you would like to have used instead of the format being based on the contents of the texture; the manager reserves the right to create a different format for the texture if the original format is not available in this context.
hwGammaCorrectionpass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.

◆ loadImage()

virtual TexturePtr Ogre::TextureManager::loadImage ( const String name,
const String group,
const Image img,
TextureType  texType = TEX_TYPE_2D,
int  numMipmaps = MIP_DEFAULT,
Real  gamma = 1.0f,
bool  isAlpha = false,
PixelFormat  desiredFormat = PF_UNKNOWN,
bool  hwGammaCorrection = false 
)
virtual

Loads a texture from an Image object.

Note
The texture will create as manual texture without loader.
Parameters
nameThe file to load, or a String identifier in some cases
groupThe name of the resource group to assign the texture to
texTypeThe type of texture to load/create, defaults to normal 2D textures
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
gammaThe gamma adjustment factor to apply to this texture (brightening/darkening)
isAlphaOnly applicable to greyscale images. If true, specifies that the image should be loaded into an alpha texture rather than a single channel colour texture - useful for fixed-function systems.
desiredFormatThe format you would like to have used instead of the format being based on the contents of the texture; the manager reserves the right to create a different format for the texture if the original format is not available in this context.
hwGammaCorrectionpass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.
imgThe Image object which contains the data to load

◆ loadRawData()

virtual TexturePtr Ogre::TextureManager::loadRawData ( const String name,
const String group,
DataStreamPtr stream,
ushort  width,
ushort  height,
PixelFormat  format,
TextureType  texType = TEX_TYPE_2D,
int  numMipmaps = MIP_DEFAULT,
Real  gamma = 1.0f,
bool  hwGammaCorrection = false 
)
virtual

Loads a texture from a raw data stream.

Note
The texture will create as manual texture without loader.
Parameters
nameThe name to give the resulting texture
groupThe name of the resource group to assign the texture to
streamIncoming data stream
widthThe width of the texture
heightThe height of the texture
formatThe format of the data being passed in; the manager reserves the right to create a different format for the texture if the original format is not available in this context.
texTypeThe type of texture to load/create, defaults to normal 2D textures
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
gammaThe gamma adjustment factor to apply to this texture (brightening/darkening) while loading
hwGammaCorrectionPass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.

◆ createManual() [1/2]

virtual TexturePtr Ogre::TextureManager::createManual ( const String name,
const String group,
TextureType  texType,
uint  width,
uint  height,
uint  depth,
int  numMipmaps,
PixelFormat  format,
int  usage = TU_DEFAULT,
ManualResourceLoader loader = 0,
bool  hwGammaCorrection = false,
uint  fsaa = 0,
const String fsaaHint = BLANKSTRING 
)
virtual

Create a manual texture with specified width, height and depth (not loaded from a file).

Parameters
nameThe name to give the resulting texture
groupThe name of the resource group to assign the texture to
texTypeThe type of texture to load/create, defaults to normal 2D textures
widthThe width of the texture
heightThe height of the texture
depthThe depth of the texture
numMipmapsThe number of pre-filtered mipmaps to generate. If left to MIP_DEFAULT then the TextureManager's default number of mipmaps will be used (see setDefaultNumMipmaps()) If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.
formatThe internal format you wish to request; the manager reserves the right to create a different format if the one you select is not available in this context.
usageThe kind of usage this texture is intended for. It is a combination of TU_STATIC, TU_DYNAMIC, TU_WRITE_ONLY, TU_AUTOMIPMAP and TU_RENDERTARGET (see TextureUsage enum). You are strongly advised to use HBU_STATIC_WRITE_ONLY wherever possible, if you need to update regularly, consider HBU_DYNAMIC_WRITE_ONLY.
loaderIf you intend the contents of the manual texture to be regularly updated, to the extent that you don't need to recover the contents if the texture content is lost somehow, you can leave this parameter as 0. However, if you intend to populate the texture only once, then you should implement ManualResourceLoader and pass a pointer to it in this parameter; this means that if the manual texture ever needs to be reloaded, the ManualResourceLoader will be called to do it.
hwGammaCorrectionpass 'true' to enable hardware gamma correction (sRGB) on this texture. The hardware will convert from gamma space to linear space when reading from this texture. Only applicable for 8-bits per channel textures, will be ignored for other types. Has the advantage over pre-applied gamma that the texture precision is maintained.
fsaaThe level of multisampling to use if this is a render target. Ignored if usage does not include TU_RENDERTARGET or if the device does not support it.
fsaaHintspecify "Quality" to enable CSAA on D3D

◆ createManual() [2/2]

TexturePtr Ogre::TextureManager::createManual ( const String name,
const String group,
TextureType  texType,
uint  width,
uint  height,
int  numMipmaps,
PixelFormat  format,
int  usage = TU_DEFAULT,
ManualResourceLoader loader = 0,
bool  hwGammaCorrection = false,
uint  fsaa = 0,
const String fsaaHint = BLANKSTRING 
)
inline

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

◆ setPreferredIntegerBitDepth()

virtual void Ogre::TextureManager::setPreferredIntegerBitDepth ( ushort  bits,
bool  reloadTextures = true 
)
virtual

Sets preferred bit depth for integer pixel format textures.

Parameters
bitsNumber of bits. Available values: 0, 16 and 32, where 0 (the default) means keep original format as it is. This value is number of bits for the pixel.
reloadTexturesIf true (the default), will reloading all reloadable textures.

◆ getPreferredIntegerBitDepth()

virtual ushort Ogre::TextureManager::getPreferredIntegerBitDepth ( void  ) const
virtual

Gets preferred bit depth for integer pixel format textures.

◆ setPreferredFloatBitDepth()

virtual void Ogre::TextureManager::setPreferredFloatBitDepth ( ushort  bits,
bool  reloadTextures = true 
)
virtual

Sets preferred bit depth for float pixel format textures.

Parameters
bitsNumber of bits. Available values: 0, 16 and 32, where 0 (the default) means keep original format as it is. This value is number of bits for a channel of the pixel.
reloadTexturesIf true (the default), will reloading all reloadable textures.

◆ getPreferredFloatBitDepth()

virtual ushort Ogre::TextureManager::getPreferredFloatBitDepth ( void  ) const
virtual

Gets preferred bit depth for float pixel format textures.

◆ setPreferredBitDepths()

virtual void Ogre::TextureManager::setPreferredBitDepths ( ushort  integerBits,
ushort  floatBits,
bool  reloadTextures = true 
)
virtual

Sets preferred bit depth for integer and float pixel format.

Parameters
integerBitsNumber of bits. Available values: 0, 16 and 32, where 0 (the default) means keep original format as it is. This value is number of bits for the pixel.
floatBitsNumber of bits. Available values: 0, 16 and 32, where 0 (the default) means keep original format as it is. This value is number of bits for a channel of the pixel.
reloadTexturesIf true (the default), will reloading all reloadable textures.

◆ isFormatSupported()

virtual bool Ogre::TextureManager::isFormatSupported ( TextureType  ttype,
PixelFormat  format,
int  usage 
)
virtual

Returns whether this render system can natively support the precise texture format requested with the given usage options.

Remarks
You can still create textures with this format even if this method returns false; the texture format will just be altered to one which the device does support.
Note
Sometimes the device may just slightly change the format, such as reordering the channels or packing the channels differently, without it making and qualitative differences to the texture. If you want to just detect whether the quality of a given texture will be reduced, use isEquivalentFormatSupport instead.
Parameters
ttypeThe type of texture
formatThe pixel format requested
usageThe kind of usage this texture is intended for, a combination of the TextureUsage flags.
Returns
true if the format is natively supported, false if a fallback would be used.

◆ isEquivalentFormatSupported()

virtual bool Ogre::TextureManager::isEquivalentFormatSupported ( TextureType  ttype,
PixelFormat  format,
int  usage 
)
virtual

Returns whether this render system can support the texture format requested with the given usage options, or another format with no quality reduction.

◆ getNativeFormat()

virtual PixelFormat Ogre::TextureManager::getNativeFormat ( TextureType  ttype,
PixelFormat  format,
int  usage 
)
pure virtual

Gets the format which will be natively used for a requested format given the constraints of the current device.

Implemented in Ogre::GL3PlusTextureManager, Ogre::D3D11TextureManager, Ogre::D3D9TextureManager, Ogre::GLES2TextureManager, and Ogre::GLTextureManager.

◆ isHardwareFilteringSupported()

virtual bool Ogre::TextureManager::isHardwareFilteringSupported ( TextureType  ttype,
PixelFormat  format,
int  usage,
bool  preciseFormatOnly = false 
)
virtual

Returns whether this render system has hardware filtering supported for the texture format requested with the given usage options.

Remarks
Not all texture format are supports filtering by the hardware, i.e. some cards support floating point format, but it doesn't supports filtering on the floating point texture at all, or only a subset floating point formats have flitering supported.
In the case you want to write shader to work with floating point texture, and you want to produce better visual quality, it's necessary to flitering the texture manually in shader (potential requires four or more texture fetch instructions, plus several arithmetic instructions) if filtering doesn't supported by hardware. But in case on the hardware that supports floating point filtering natively, it had better to adopt this capability for performance (because only one texture fetch instruction are required) and doesn't loss visual quality.
This method allow you queries hardware texture filtering capability to deciding which verion of the shader to be used. Note it's up to you to write multi-version shaders for support various hardware, internal engine can't do that for you automatically.
Note
Under GL, texture filtering are always supported by driver, but if it's not supported by hardware natively, software simulation will be used, and you will end up with very slow speed (less than 0.1 fps for example). To slove this performance problem, you must disable filtering manually (by use filtering none in the material script's texture_unit section, or call TextureUnitState::setTextureFiltering with TFO_NONE if populate material in code).
Parameters
ttypeThe texture type requested
formatThe pixel format requested
usageThe kind of usage this texture is intended for, a combination of the TextureUsage flags.
preciseFormatOnlyWhether precise or fallback format mode is used to detecting. In case the pixel format doesn't supported by device, false will be returned if in precise mode, and natively used pixel format will be actually use to check if in fallback mode.
Returns
true if the texture filtering is supported.

Reimplemented in Ogre::D3D9TextureManager, Ogre::GLES2TextureManager, and Ogre::GLTextureManager.

◆ setDefaultNumMipmaps()

virtual void Ogre::TextureManager::setDefaultNumMipmaps ( uint32  num)
virtual

Sets the default number of mipmaps to be used for loaded textures, for when textures are loaded automatically (e.g.

by Material class) or when 'load' is called with the default parameters by the application. If set to MIP_UNLIMITED mipmaps will be generated until the lowest possible level, 1x1x1.

Note
The default value is 0.

◆ getDefaultNumMipmaps()

virtual uint32 Ogre::TextureManager::getDefaultNumMipmaps ( )
inlinevirtual

Gets the default number of mipmaps to be used for loaded textures.

◆ _getWarningTexture()

const TexturePtr& Ogre::TextureManager::_getWarningTexture ( )

Internal method to create a warning texture (bound when a texture unit is blank)

◆ getDefaultSampler()

const SamplerPtr& Ogre::TextureManager::getDefaultSampler ( )

get the default sampler

◆ getSingleton()

static TextureManager& Ogre::TextureManager::getSingleton ( void  )
static

Get the singleton instance.

◆ getSingletonPtr()

static TextureManager* Ogre::TextureManager::getSingletonPtr ( void  )
static

Get the singleton instance.

◆ createResource()

ResourcePtr Ogre::ResourceManager::createResource ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList createParams = 0 
)
inherited

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

Parameters
nameThe unique name of the Resource
groupThe name of the resource group to attach this new resource to
isManualIs 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.
loaderPointer 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.
createParamsIf any parameters are required to create an instance, they should be supplied here as name / value pairs

◆ createOrRetrieve() [2/2]

ResourceCreateOrRetrieveResult Ogre::ResourceManager::createOrRetrieve ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList createParams = 0 
)
inherited

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

Remarks
This method performs the same task as calling getByName() followed by create() if that returns null. The advantage is that it does it in one call so there are no race conditions if using multiple threads that could cause getByName() to return null, but create() to fail because another thread created a resource in between.
Parameters
nameThe unique name of the Resource
groupThe name of the resource group to attach this new resource to
isManualIs 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.
loaderPointer 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.
createParamsIf any parameters are required to create an instance, they should be supplied here as name / value pairs
Returns
A pair, the first element being the pointer, and the second being an indicator specifying whether the resource was newly created.

Referenced by getSampler().

◆ setMemoryBudget()

void Ogre::ResourceManager::setMemoryBudget ( size_t  bytes)
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.

◆ getMemoryBudget()

size_t Ogre::ResourceManager::getMemoryBudget ( void  ) const
inherited

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

◆ getMemoryUsage()

size_t Ogre::ResourceManager::getMemoryUsage ( void  ) const
inlineinherited

Gets the current memory usage, in bytes.

References OGRE_RESOURCE_GROUP_INIT.

◆ unload() [1/2]

void Ogre::ResourceManager::unload ( const String name,
const String group = RGN_DEFAULT 
)
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.

◆ unload() [2/2]

void Ogre::ResourceManager::unload ( ResourceHandle  handle)
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.

◆ unloadAll() [1/2]

void Ogre::ResourceManager::unloadAll ( bool  reloadableOnly = true)
inlineinherited

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.
Parameters
reloadableOnlyIf true (the default), only unload the resource that is reloadable. Because some resources isn't reloadable, they will be unloaded but can't load them later. Thus, you might not want to them unloaded. Or, you might unload all of them, and then populate them manually later.
See also
Resource::isReloadable for resource is reloadable.

References Ogre::Resource::LF_DEFAULT, and Ogre::Resource::LF_INCLUDE_NON_RELOADABLE.

◆ unloadAll() [2/2]

virtual void Ogre::ResourceManager::unloadAll ( Resource::LoadingFlags  flags)
virtualinherited

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.
Parameters
flagsAllow to restrict processing to only reloadable and/or unreferenced resources.
See also
Resource::LoadingFlags for additional information.

◆ reloadAll() [1/2]

void Ogre::ResourceManager::reloadAll ( bool  reloadableOnly = true)
inlineinherited

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.
Parameters
reloadableOnlyIf true (the default), only reload the resource that is reloadable. Because some resources isn't reloadable, they will be unloaded but can't loaded again. Thus, you might not want to them unloaded. Or, you might unload all of them, and then populate them manually later.
See also
Resource::isReloadable for resource is reloadable.

References Ogre::Resource::LF_DEFAULT, and Ogre::Resource::LF_INCLUDE_NON_RELOADABLE.

◆ reloadAll() [2/2]

virtual void Ogre::ResourceManager::reloadAll ( Resource::LoadingFlags  flags)
virtualinherited

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.
Parameters
flagsAllow to restrict processing to only reloadable and/or unreferenced resources. Additionally, reloading could be done with preserving some selected resource states that could be used elsewhere.
See also
Resource::LoadingFlags for additional information.

◆ unloadUnreferencedResources()

void Ogre::ResourceManager::unloadUnreferencedResources ( bool  reloadableOnly = true)
inlineinherited

Unload all resources which are not referenced by any other object.

Remarks
This method behaves like unloadAll, except that it only unloads resources which are not in use, ie not referenced by other objects. This allows you to free up some memory selectively whilst still keeping the group around (and the resources present, just not using much memory).
Some referenced resource may exists 'weak' pointer to their sub-components (e.g. Entity held pointer to SubMesh), in this case, unload or reload that resource will cause dangerous pointer access. Use this function instead of unloadAll allows you avoid fail in those situations.
Parameters
reloadableOnlyIf true (the default), only unloads resources which can be subsequently automatically reloaded.

References Ogre::Resource::LF_ONLY_UNREFERENCED, and Ogre::Resource::LF_ONLY_UNREFERENCED_INCLUDE_NON_RELOADABLE.

◆ reloadUnreferencedResources()

void Ogre::ResourceManager::reloadUnreferencedResources ( bool  reloadableOnly = true)
inlineinherited

Caused all currently loaded but not referenced by any other object resources to be reloaded.

Remarks
This method behaves like reloadAll, except that it only reloads resources which are not in use, i.e. not referenced by other objects.
Some referenced resource may exists 'weak' pointer to their sub-components (e.g. Entity held pointer to SubMesh), in this case, unload or reload that resource will cause dangerous pointer access. Use this function instead of reloadAll allows you avoid fail in those situations.
Parameters
reloadableOnlyIf true (the default), only reloads resources which can be subsequently automatically reloaded.

References Ogre::Resource::LF_ONLY_UNREFERENCED, Ogre::Resource::LF_ONLY_UNREFERENCED_INCLUDE_NON_RELOADABLE, and OGRE_RESOURCE_GROUP_INIT.

◆ remove() [1/3]

void Ogre::ResourceManager::remove ( const ResourcePtr r)
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.

◆ remove() [2/3]

void Ogre::ResourceManager::remove ( const String name,
const String group = RGN_DEFAULT 
)
inherited

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

◆ remove() [3/3]

void Ogre::ResourceManager::remove ( ResourceHandle  handle)
inherited

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

◆ removeAll()

virtual void Ogre::ResourceManager::removeAll ( void  )
virtualinherited

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.

Reimplemented in Ogre::CompositorManager.

◆ removeUnreferencedResources()

virtual void Ogre::ResourceManager::removeUnreferencedResources ( bool  reloadableOnly = true)
virtualinherited

Remove all resources which are not referenced by any other object.

Remarks
This method behaves like removeAll, except that it only removes resources which are not in use, ie not referenced by other objects. This allows you to free up some memory selectively whilst still keeping the group around (and the resources present, just not using much memory).
Some referenced resource may exists 'weak' pointer to their sub-components (e.g. Entity held pointer to SubMesh), in this case, remove or reload that resource will cause dangerous pointer access. Use this function instead of removeAll allows you avoid fail in those situations.
Parameters
reloadableOnlyIf true (the default), only removes resources which can be subsequently automatically reloaded.

◆ getResourceByName()

virtual ResourcePtr Ogre::ResourceManager::getResourceByName ( const String name,
const String groupName = RGN_DEFAULT 
)
virtualinherited

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

◆ getByHandle()

virtual ResourcePtr Ogre::ResourceManager::getByHandle ( ResourceHandle  handle)
virtualinherited

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

◆ resourceExists() [1/2]

bool Ogre::ResourceManager::resourceExists ( const String name,
const String group = RGN_DEFAULT 
)
inlineinherited

Returns whether the named resource exists in this manager.

◆ resourceExists() [2/2]

bool Ogre::ResourceManager::resourceExists ( ResourceHandle  handle)
inlineinherited

Returns whether a resource with the given handle exists in this manager.

◆ _notifyResourceTouched()

virtual void Ogre::ResourceManager::_notifyResourceTouched ( Resource res)
virtualinherited

Notify this manager that a resource which it manages has been 'touched', i.e.

used.

◆ _notifyResourceLoaded()

virtual void Ogre::ResourceManager::_notifyResourceLoaded ( Resource res)
virtualinherited

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

◆ _notifyResourceUnloaded()

virtual void Ogre::ResourceManager::_notifyResourceUnloaded ( Resource res)
virtualinherited

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

◆ prepare() [2/2]

ResourcePtr Ogre::ResourceManager::prepare ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList loadParams = 0,
bool  backgroundThread = false 
)
inherited

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).

Parameters
nameThe name of the Resource
groupThe resource group to which this resource will belong
isManualIs the resource to be manually loaded? If so, you should provide a value for the loader parameter
loaderThe manual loader which is to perform the required actions when this resource is loaded; only applicable when you specify true for the previous parameter
loadParamsOptional pointer to a list of name/value pairs containing loading parameters for this type of resource.
backgroundThreadOptional boolean which lets the load routine know if it is being run on the background resource loading thread

◆ load() [2/2]

ResourcePtr Ogre::ResourceManager::load ( const String name,
const String group,
bool  isManual = false,
ManualResourceLoader loader = 0,
const NameValuePairList loadParams = 0,
bool  backgroundThread = false 
)
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
nameThe name of the Resource
groupThe resource group to which this resource will belong
isManualIs the resource to be manually loaded? If so, you should provide a value for the loader parameter
loaderThe manual loader which is to perform the required actions when this resource is loaded; only applicable when you specify true for the previous parameter
loadParamsOptional pointer to a list of name/value pairs containing loading parameters for this type of resource.
backgroundThreadOptional boolean which lets the load routine know if it is being run on the background resource loading thread

◆ getScriptPatterns()

const StringVector& Ogre::ResourceManager::getScriptPatterns ( void  ) const
inlinevirtualinherited

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
parseScript

Implements Ogre::ScriptLoader.

◆ parseScript()

void Ogre::ResourceManager::parseScript ( DataStreamPtr stream,
const String groupName 
)
inlinevirtualinherited

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
streamWeak reference to a data stream which is the source of the script
groupNameThe 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.

◆ getLoadingOrder()

Real Ogre::ResourceManager::getLoadingOrder ( void  ) const
inlinevirtualinherited

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.

◆ getResourceType()

const String& Ogre::ResourceManager::getResourceType ( void  ) const
inlineinherited

Gets a string identifying the type of resource this manager handles.

◆ setVerbose()

void Ogre::ResourceManager::setVerbose ( bool  v)
inlineinherited

Sets whether this manager and its resources habitually produce log output.

◆ getVerbose()

bool Ogre::ResourceManager::getVerbose ( void  )
inlineinherited

Gets whether this manager and its resources habitually produce log output.

◆ getResourcePool()

ResourcePool* Ogre::ResourceManager::getResourcePool ( const String name)
inherited

Create a resource pool, or reuse one that already exists.

◆ destroyResourcePool() [1/2]

void Ogre::ResourceManager::destroyResourcePool ( ResourcePool pool)
inherited

Destroy a resource pool.

◆ destroyResourcePool() [2/2]

void Ogre::ResourceManager::destroyResourcePool ( const String name)
inherited

Destroy a resource pool.

◆ destroyAllResourcePools()

void Ogre::ResourceManager::destroyAllResourcePools ( )
inherited

destroy all pools

◆ getResourceIterator()

ResourceMapIterator Ogre::ResourceManager::getResourceIterator ( void  )
inlineinherited

Returns an iterator over all resources in this manager.

Note
Use of this iterator is NOT thread safe!

Member Data Documentation

◆ OGRE_AUTO_MUTEX

Ogre::ResourceManager::OGRE_AUTO_MUTEX
inherited

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