# BufferContext

from pandac.PandaModules import BufferContext

Class : BufferContext
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.

## Inheritance:

BufferContext: SavedContext
SavedContext: TypedObject
TypedObject: MemoryBase
MemoryBase:

## Methods of BufferContext:

getClassType
getDataSizeBytes
getModified

## Methods of SavedContext:

getClassType

## Methods of TypedObject:

getClassType
getType
getTypeIndex
isExactType
isOfType

getClassType static TypeHandle BufferContext::get_class_type(void); Undocumented function.

getDataSizeBytes unsigned int BufferContext::get_data_size_bytes(void) const; Filename: bufferContext.I Created by: drose (16Mar06) PANDA 3D SOFTWARE Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved All use of this software is subject to the terms of the Panda 3d Software license. You should have received a copy of this license along with this source code; you will also find a current copy of the license at http://etc.cmu.edu/panda3d/docs/license/ . To contact the maintainers of this program write to panda3d-general@lists.sourceforge.net . Description: 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 BufferContext::get_modified(void) const; Description: Returns the UpdateSeq that was recorded the last time mark_loaded() was called.

getClassType static TypeHandle SavedContext::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedObject::get_class_type(void); Undocumented function.

getType virtual TypeHandle TypedObject::get_type(void) const = 0; Derived classes should override this function to return get_class_type().

getTypeIndex int TypedObject::get_type_index(void) const; Description: 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().

isExactType bool TypedObject::is_exact_type(TypeHandle handle) const; Description: Returns true if the current object is the indicated type exactly.

isOfType bool TypedObject::is_of_type(TypeHandle handle) const; Description: Returns true if the current object is or derives from the indicated type.