20.24. The IndexBufferManager Object

Provides allocation and freeing of ranges within IndexBuffers.

The IndexBufferManager will create and free any IndexBuffers it requires.

Required scripts

The IndexBufferManager object requires:

/*{{ javascript("jslib/indexbuffermanager.js") }}*/

20.24.1. Constructor

20.24.1.1. create

Summary

Syntax

var indexBufferManager = IndexBufferManager.create(graphicsDevice, dynamic);

graphicsDevice

The GraphicsDevice object to allocate from.

dynamic

If true the IndexBuffers should be created with the dynamic flag set to true. By default the IndexBuffers are static.

20.24.2. Method

20.24.2.1. allocate

Summary

Allocate a number of indices of a given format.

The returned object should be retained to pass to free().

Syntax

var format = graphicsDevice.INDEXFORMAT_USHORT;

var allocation = indexBufferManager.allocate(numIndices, format);

var indexBuffer = allocation.indexBuffer;
var baseIndex = allocation.baseIndex;

numIndices

The number of indices to allocate.

format

An index format.

The returned object has two public values:

indexBuffer

The IndexBuffer the indices are allocated from.

baseIndex

The first index in the buffer to use.

20.24.2.2. free

Summary

Called to free an allocation from the IndexBufferManager.

Syntax

indexBufferManager.free(allocation);

allocation

The object returned from allocate().

20.24.2.3. destroy

Summary

Called when the object is no longer required.

Syntax

indexBufferManager.destroy();

20.24.3. Properties

20.24.3.1. version

Summary

The version number of the IndexBufferManager implementation.

Syntax

var versionNumber = indexBufferManager.version;