GL ES-specific implementation of a TextureManager. More...

#include <OgreGLES2TextureManager.h>

Inheritance diagram for Ogre::GLES2TextureManager:

Public Types
typedef std::pair< ResourcePtr, bool >	ResourceCreateOrRetrieveResult

typedef map< ResourceHandle, ResourcePtr >::type	ResourceHandleMap

typedef OGRE_HashMap< String, ResourcePtr >	ResourceMap

typedef MapIterator< ResourceHandleMap >	ResourceMapIterator

typedef OGRE_HashMap< String, ResourceMap >	ResourceWithGroupMap

Public Member Functions
	GLES2TextureManager (GLES2RenderSystem *renderSystem)

virtual	~GLES2TextureManager ()

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...

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 OGRE_RESOURCE_GROUP_INIT)
	Get a resource by name. More...

virtual uint32	getDefaultNumMipmaps ()
	Gets the default number of mipmaps to be used for loaded textures. 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...

PixelFormat	getNativeFormat (TextureType ttype, PixelFormat format, int usage)
	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 OGRE_RESOURCE_GROUP_INIT)
	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...

ResourcePool *	getResourcePool (const String &name)
	Create a resource pool, or reuse one that already exists. More...

const String &	getResourceType (void) const
	Gets a string identifying the type of resource this manager handles. More...

const StringVector &	getScriptPatterns (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...

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 OGRE_RESOURCE_GROUP_INIT)

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 OGRE_RESOURCE_GROUP_INIT)
	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 OGRE_RESOURCE_GROUP_INIT)
	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 TextureManager &	getSingleton (void)
	Get the singleton instance. More...

static TextureManager *	getSingletonPtr (void)
	Get the singleton instance. More...

Public Attributes
	OGRE_AUTO_MUTEX

Friends
class	GLES2RenderSystem

Detailed Description

GL ES-specific implementation of a TextureManager.

Member Typedef Documentation

◆ ResourceCreateOrRetrieveResult

typedef std::pair<ResourcePtr, bool> Ogre::ResourceManager::ResourceCreateOrRetrieveResult

inherited

◆ ResourceMap

typedef OGRE_HashMap< String, ResourcePtr > Ogre::ResourceManager::ResourceMap

inherited

◆ ResourceWithGroupMap

typedef OGRE_HashMap< String, ResourceMap > Ogre::ResourceManager::ResourceWithGroupMap

inherited

◆ ResourceHandleMap

typedef map<ResourceHandle, ResourcePtr>::type Ogre::ResourceManager::ResourceHandleMap

inherited

◆ ResourceMapIterator

typedef MapIterator<ResourceHandleMap> Ogre::ResourceManager::ResourceMapIterator

inherited

Constructor & Destructor Documentation

◆ GLES2TextureManager()

Ogre::GLES2TextureManager::GLES2TextureManager ( GLES2RenderSystem * renderSystem )

◆ ~GLES2TextureManager()

virtual Ogre::GLES2TextureManager::~GLES2TextureManager ( )

virtual

Member Function Documentation

◆ getNativeFormat()

PixelFormat Ogre::GLES2TextureManager::getNativeFormat	(	TextureType	ttype,
		PixelFormat	format,
		int	usage
	)

virtual

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

Implements Ogre::TextureManager.

◆ isHardwareFilteringSupported()

bool Ogre::GLES2TextureManager::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

ttype	The texture type requested
format	The pixel format requested
usage	The kind of usage this texture is intended for, a combination of the TextureUsage flags.
preciseFormatOnly	Whether 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.

Implements Ogre::TextureManager.

◆ create()

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

inherited

Create a new texture.

See also: ResourceManager::createResource

◆ getByName()

TexturePtr Ogre::TextureManager::getByName	(	const String &	name,
		const String &groupName	OGRE_RESOURCE_GROUP_INIT
	)

inherited

Get a resource by name.

See also: ResourceManager::getResourceByName

◆ 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`
	)

inherited

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

Parameters

texType	The type of texture to load/create, defaults to normal 2D textures
numMipmaps	The 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.
gamma	The gamma adjustment factor to apply to this texture (brightening/darkening)
isAlpha	Only 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.
desiredFormat	The format you would like to have used instead of the format being based on the contents of the texture
hwGammaCorrection	Pass '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.

◆ 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.

See also: ResourceManager::createResource; ResourceManager::getResourceByName

Returns: A pair, the first element being the pointer, and the second being an indicator specifying whether the resource was newly created.

◆ 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`
	)

inherited

Prepares to loads a texture from a file.

Parameters

name	The file to load, or a String identifier in some cases
group	The name of the resource group to assign the texture to
texType	The type of texture to load/create, defaults to normal 2D textures
numMipmaps	The 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.
gamma	The gamma adjustment factor to apply to this texture (brightening/darkening)
isAlpha	Only 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.
desiredFormat	The format you would like to have used instead of the format being based on the contents of the texture
hwGammaCorrection	Pass '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() [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

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.
backgroundThread	Optional boolean which lets the load routine know if it is being run on the background resource loading thread

◆ 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`
	)

inherited

Loads a texture from a file.

Parameters

name	The file to load, or a String identifier in some cases
group	The name of the resource group to assign the texture to
texType	The type of texture to load/create, defaults to normal 2D textures
numMipmaps	The 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.
gamma	The gamma adjustment factor to apply to this texture (brightening/darkening) during loading
isAlpha	Only 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.
desiredFormat	The format you would like to have used instead of the format being based on the contents of the texture. Pass PF_UNKNOWN to default.
hwGammaCorrection	Pass '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() [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

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.
backgroundThread	Optional boolean which lets the load routine know if it is being run on the background resource loading thread

◆ 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`
	)

virtualinherited

Loads a texture from an Image object.

Note: The texture will create as manual texture without loader.

Parameters

name	The name to give the resulting texture
group	The name of the resource group to assign the texture to
img	The Image object which contains the data to load
texType	The type of texture to load/create, defaults to normal 2D textures
numMipmaps	The 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.
gamma	The gamma adjustment factor to apply to this texture (brightening/darkening)
isAlpha	Only 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.
desiredFormat	The format you would like to have used instead of the format being based on the contents of the texture
hwGammaCorrection	Pass '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.

◆ 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`
	)

virtualinherited

Loads a texture from a raw data stream.

Note: The texture will create as manual texture without loader.

Parameters

name	The name to give the resulting texture
group	The name of the resource group to assign the texture to
stream	Incoming data stream
width	The width of the texture
height	The height of the texture
format	The 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.
texType	The type of texture to load/create, defaults to normal 2D textures
numMipmaps	The 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.
gamma	The gamma adjustment factor to apply to this texture (brightening/darkening) while loading
hwGammaCorrection	Pass '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`
	)

virtualinherited

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

Parameters

name	The name to give the resulting texture
group	The name of the resource group to assign the texture to
texType	The type of texture to load/create, defaults to normal 2D textures
width	The width of the texture
height	The height of the texture
depth	The depth of the texture
numMipmaps	The 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.
format	The 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.
usage	The 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.
loader	If 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.
hwGammaCorrection	pass '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.
fsaa	The 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.

◆ 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`
	)

inlineinherited

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`
	)

virtualinherited

Sets preferred bit depth for integer pixel format textures.

Parameters

bits	Number 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.
reloadTextures	If true (the default), will reloading all reloadable textures.

◆ getPreferredIntegerBitDepth()

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

virtualinherited

Gets preferred bit depth for integer pixel format textures.

◆ setPreferredFloatBitDepth()

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

virtualinherited

Sets preferred bit depth for float pixel format textures.

Parameters

bits	Number 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.
reloadTextures	If true (the default), will reloading all reloadable textures.

◆ getPreferredFloatBitDepth()

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

virtualinherited

Gets preferred bit depth for float pixel format textures.

◆ setPreferredBitDepths()

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

virtualinherited

Sets preferred bit depth for integer and float pixel format.

Parameters

integerBits	Number 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.
floatBits	Number 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.
reloadTextures	If true (the default), will reloading all reloadable textures.

◆ isFormatSupported()

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

virtualinherited

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

ttype	The type of texture
format	The pixel format requested
usage	The 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
	)

virtualinherited

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

◆ setDefaultNumMipmaps()

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

virtualinherited

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 ( )

inlinevirtualinherited

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

◆ _getWarningTexture()

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

inherited

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

◆ getSingleton()

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

staticinherited

Get the singleton instance.

◆ getSingletonPtr()

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

staticinherited

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.

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

◆ 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	OGRE_RESOURCE_GROUP_INIT
	)

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

reloadableOnly If 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

flags Allow 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

reloadableOnly If 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

flags Allow 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

reloadableOnly If 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

reloadableOnly If 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	OGRE_RESOURCE_GROUP_INIT
	)

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

reloadableOnly If true (the default), only removes resources which can be subsequently automatically reloaded.

◆ getResourceByName()

virtual ResourcePtr Ogre::ResourceManager::getResourceByName	(	const String &	name,
		const String &groupName	OGRE_RESOURCE_GROUP_INIT
	)

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	OGRE_RESOURCE_GROUP_INIT
	)

inlineinherited

Returns whether the named resource exists in this manager.

References Ogre::SharedPtr< T >::get().

◆ resourceExists() [2/2]

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

inlineinherited

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

References Ogre::SharedPtr< T >::get().

◆ _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.

◆ 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: isScriptingSupported, 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

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.

◆ 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!

Friends And Related Function Documentation

◆ GLES2RenderSystem

friend class GLES2RenderSystem

friend

Member Data Documentation

◆ OGRE_AUTO_MUTEX

Ogre::ResourceManager::OGRE_AUTO_MUTEX

inherited

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

OgreGLES2TextureManager.h

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ ResourceCreateOrRetrieveResult

◆ ResourceMap

◆ ResourceWithGroupMap

◆ ResourceHandleMap

◆ ResourceMapIterator

Constructor & Destructor Documentation

◆ GLES2TextureManager()

◆ ~GLES2TextureManager()

Member Function Documentation

◆ getNativeFormat()

◆ isHardwareFilteringSupported()

◆ create()

◆ getByName()

◆ createOrRetrieve() [1/2]

◆ createOrRetrieve() [2/2]

◆ prepare() [1/2]

◆ prepare() [2/2]

◆ load() [1/2]

◆ load() [2/2]

◆ loadImage()

◆ loadRawData()

◆ createManual() [1/2]

◆ createManual() [2/2]

◆ setPreferredIntegerBitDepth()

◆ getPreferredIntegerBitDepth()

◆ setPreferredFloatBitDepth()

◆ getPreferredFloatBitDepth()

◆ setPreferredBitDepths()

◆ isFormatSupported()

◆ isEquivalentFormatSupported()

◆ setDefaultNumMipmaps()

◆ getDefaultNumMipmaps()

◆ _getWarningTexture()

◆ getSingleton()

◆ getSingletonPtr()

◆ createResource()

◆ setMemoryBudget()

◆ getMemoryBudget()

◆ getMemoryUsage()

◆ unload() [1/2]

◆ unload() [2/2]

◆ unloadAll() [1/2]

◆ unloadAll() [2/2]

◆ reloadAll() [1/2]

◆ reloadAll() [2/2]

◆ unloadUnreferencedResources()

◆ reloadUnreferencedResources()

◆ remove() [1/3]

◆ remove() [2/3]

◆ remove() [3/3]

◆ removeAll()

◆ removeUnreferencedResources()

◆ getResourceByName()

◆ getByHandle()

◆ resourceExists() [1/2]

◆ resourceExists() [2/2]

◆ _notifyResourceTouched()

◆ _notifyResourceLoaded()

◆ _notifyResourceUnloaded()

◆ getScriptPatterns()

◆ parseScript()

◆ getLoadingOrder()

◆ getResourceType()

◆ setVerbose()

◆ getVerbose()

◆ getResourcePool()

◆ destroyResourcePool() [1/2]

◆ destroyResourcePool() [2/2]

◆ destroyAllResourcePools()

◆ getResourceIterator()

Friends And Related Function Documentation

◆ GLES2RenderSystem

Member Data Documentation