Panda3D
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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. At the present, this includes most of the SavedContext types: VertexBufferContext and IndexBufferContext, as well as TextureContext. More...

Inheritance diagram for BufferContext:
SavedContext TypedObject MemoryBase IndexBufferContext TextureContext VertexBufferContext

Public Member Functions

bool getActive ()
 Returns the active flag associated with this object. An object is considered "active" if it was rendered in the current frame. More...
 
size_t 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. More...
 
UpdateSeq getModified ()
 Returns the UpdateSeq that was recorded the last time mark_loaded() was called. More...
 
bool getResident ()
 Returns the resident flag associated with this object. An object is considered "resident" if it appears to be resident in texture memory. More...
 
- Public Member Functions inherited from TypedObject
TypeHandle getType ()
 Derived classes should override this function to return get_class_type(). More...
 
int getTypeIndex ()
 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(). More...
 
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly. More...
 
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type. More...
 

Static Public Member Functions

static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from SavedContext
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedObject
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

◆ getActive()

bool getActive ( )

Returns the active flag associated with this object. An object is considered "active" if it was rendered in the current frame.

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getDataSizeBytes()

size_t 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.

◆ getModified()

UpdateSeq getModified ( )

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

◆ getResident()

bool getResident ( )

Returns the resident flag associated with this object. An object is considered "resident" if it appears to be resident in texture memory.