Panda3D
Public Member Functions | Static Public Member Functions

TextureContext Class Reference

This is a special class object that holds all the information returned by a particular GSG to indicate the texture's internal context identifier. More...

Inheritance diagram for TextureContext:
BufferContext AdaptiveLruPage SavedContext AdaptiveLruPageDynamicList AdaptiveLruPageStaticList TypedObject MemoryBase

List of all members.

Public Member Functions

 dequeueLru ()
 Removes the page from its AdaptiveLru.
 enqueueLru (AdaptiveLru lru)
 Adds the page to the LRU for the first time, or marks it recently-accessed if it has already been added.
 evictLru ()
 Evicts the page from the LRU.
bool getActive ()
 Returns the active flag associated with this object.
unsigned int getDataSizeBytes ()
 Returns the number of bytes previously reported for the data object.
AdaptiveLru getLru ()
 Returns the LRU that manages this page, or NULL if it is not currently managed by any LRU.
unsigned int getLruSize ()
 Returns the size of this page as reported to the LRU, presumably in bytes.
UpdateSeq getModified ()
 Returns the UpdateSeq that was recorded the last time mark_loaded() was called.
unsigned int getNumFrames ()
 Returns the number of frames since the page was first added to its LRU.
unsigned int getNumInactiveFrames ()
 Returns the number of frames since the page was last accessed on its LRU.
bool getResident ()
 Returns the resident flag associated with this object.
Texture getTexture ()
 Returns the pointer to the associated Texture object.
TypeHandle getType ()
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly.
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type.
 markUsedLru ()
 To be called when the page is used; this will move it to the tail of the AdaptiveLru queue it is already on.
 markUsedLru (AdaptiveLru lru)
 To be called when the page is used; this will move it to the tail of the specified AdaptiveLru queue.
 output (ostream out)
 setLruSize (unsigned int lru_size)
 Specifies the size of this page, presumably in bytes, although any unit is possible.
bool wasImageModified ()
 Returns true if the texture image has been modified since the last time mark_loaded() was called.
bool wasModified ()
 Returns true if the texture properties or image have been modified since the last time mark_loaded() was called.
bool wasPropertiesModified ()
 Returns true if the texture properties (unrelated to the image) have been modified since the last time mark_loaded() was called.
bool wasSimpleImageModified ()
 Returns true if the texture's "simple" image has been modified since the last time mark_simple_loaded() was called.
 write (ostream out, int indent_level)

Static Public Member Functions

static TypeHandle getClassType ()

Detailed Description

This is a special class object that holds all the information returned by a particular GSG to indicate the texture's internal context identifier.

Textures typically have an immediate-mode and a retained-mode operation. When using textures in retained-mode (in response to Texture.prepare()), the GSG will create some internal handle for the texture and store it here. The texture stores all of these handles internally.


Member Function Documentation

dequeueLru ( ) [inherited]

Removes the page from its AdaptiveLru.

enqueueLru ( AdaptiveLru  lru) [inherited]

Adds the page to the LRU for the first time, or marks it recently-accessed if it has already been added.

If lru is NULL, it means to remove this page from its LRU.

evictLru ( ) [inherited]

Evicts the page from the LRU.

Called internally when the LRU determines that it is full. May also be called externally when necessary to explicitly evict the page.

It is legal for this method to either evict the page as requested, do nothing (in which case the eviction will be requested again at the next epoch), or requeue itself on the tail of the queue (in which case the eviction will be requested again much later).

bool getActive ( ) [inherited]

Returns the active flag associated with this object.

An object is considered "active" if it was rendered in the current frame.

static TypeHandle getClassType ( ) [static]

Reimplemented from BufferContext.

unsigned int getDataSizeBytes ( ) [inherited]

Returns the number of bytes previously reported for the data object.

This is used to track changes in the data object's allocated size; if it changes from this, we need to create a new buffer. This is also used to track memory utilization in PStats.

AdaptiveLru getLru ( ) [inherited]

Returns the LRU that manages this page, or NULL if it is not currently managed by any LRU.

unsigned int getLruSize ( ) [inherited]

Returns the size of this page as reported to the LRU, presumably in bytes.

UpdateSeq getModified ( ) [inherited]

Returns the UpdateSeq that was recorded the last time mark_loaded() was called.

unsigned int getNumFrames ( ) [inherited]

Returns the number of frames since the page was first added to its LRU.

Returns 0 if it does not have an LRU.

unsigned int getNumInactiveFrames ( ) [inherited]

Returns the number of frames since the page was last accessed on its LRU.

Returns 0 if it does not have an LRU.

bool getResident ( ) [inherited]

Returns the resident flag associated with this object.

An object is considered "resident" if it appears to be resident in texture memory.

Texture getTexture ( )

Returns the pointer to the associated Texture object.

TypeHandle getType ( ) [inherited]

Reimplemented in AnimChannelBase.

int getTypeIndex ( ) [inherited]

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

bool isExactType ( TypeHandle  handle) [inherited]

Returns true if the current object is the indicated type exactly.

bool isOfType ( TypeHandle  handle) [inherited]

Returns true if the current object is or derives from the indicated type.

markUsedLru ( ) [inherited]

To be called when the page is used; this will move it to the tail of the AdaptiveLru queue it is already on.

This method is const because it's not technically modifying the contents of the page itself.

markUsedLru ( AdaptiveLru  lru) [inherited]

To be called when the page is used; this will move it to the tail of the specified AdaptiveLru queue.

output ( ostream  out) [inherited]
setLruSize ( unsigned int  lru_size) [inherited]

Specifies the size of this page, presumably in bytes, although any unit is possible.

bool wasImageModified ( )

Returns true if the texture image has been modified since the last time mark_loaded() was called.

bool wasModified ( )

Returns true if the texture properties or image have been modified since the last time mark_loaded() was called.

bool wasPropertiesModified ( )

Returns true if the texture properties (unrelated to the image) have been modified since the last time mark_loaded() was called.

bool wasSimpleImageModified ( )

Returns true if the texture's "simple" image has been modified since the last time mark_simple_loaded() was called.

write ( ostream  out,
int  indent_level 
) [inherited]
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