Panda3D
Public Member Functions | Static Public Member Functions

BufferContext Class Reference

This is a base class for those kinds of SavedContexts that occupy an easily-measured (and substantial) number of bytes in the video card's frame buffer memory or AGP memory. More...

Inheritance diagram for BufferContext:
SavedContext TypedObject MemoryBase IndexBufferContext TextureContext VertexBufferContext

List of all members.

Public Member Functions

bool getActive ()
 Returns the active flag associated with this object.
unsigned int getDataSizeBytes ()
 Returns the number of bytes previously reported for the data object.
UpdateSeq getModified ()
 Returns the UpdateSeq that was recorded the last time mark_loaded() was called.
bool getResident ()
 Returns the resident flag associated with this 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.

Static Public Member Functions

static TypeHandle getClassType ()

Detailed Description

This is a base class for those kinds of SavedContexts that occupy an easily-measured (and substantial) number of bytes in the video card's frame buffer memory or AGP memory.

At the present, this includes most of the SavedContext types: VertexBufferContext and IndexBufferContext, as well as TextureContext.

This class provides methods for tracking the video memory utilization, as well as residency of each object, via PStats.


Member Function Documentation

bool getActive ( )

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 SavedContext.

Reimplemented in TextureContext, VertexBufferContext, and IndexBufferContext.

unsigned int getDataSizeBytes ( )

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.

UpdateSeq getModified ( )

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

bool getResident ( )

Returns the resident flag associated with this object.

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

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.

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