Microsoft DirectX 9.0

ID3DXMesh Interface

Applications use the methods of the ID3DXMesh interface to manipulate mesh objects.

ID3DXMesh Members

CloneMesh Clones a mesh using a declarator.
CloneMeshFVF Clones a mesh using a flexible vertex format (FVF) code.
ConvertAdjacencyToPointReps Converts mesh adjacency information to an array of point representatives.
ConvertPointRepsToAdjacency Converts point representative data to mesh adjacency information.

Draws a subset of a mesh.

GenerateAdjacency Generates adjacency information based on mesh indices.
GetAttributeTable Retrieves either an attribute table for a mesh, or the number of entries stored in an attribute table for a mesh.

Retrieves a declaration describing the vertices in the mesh.

GetDevice Retrieves the device associated with the mesh.

Get the fixed function vertex value.


Retrieves the data in an index buffer.

GetNumBytesPerVertex Gets the number of bytes per vertex.

Retrieves the number of faces in the mesh.


Retrieves the number of vertices in the mesh.

GetOptions Retrieves the mesh options enabled for this mesh at creation time.

Retrieves the data in a vertex buffer.


Locks the mesh buffer that contains the mesh attribute data, and returns a pointer to it.


Locks an index buffer and obtains a pointer to the index buffer memory.


Locks a vertex buffer and obtains a pointer to the vertex buffer memory.

Optimize Controls the reordering of mesh faces and vertices to optimize performance, generating an output mesh.
OptimizeInplace Controls the reordering of mesh faces and vertices to optimize performance.


Unlocks an attribute buffer.


Unlocks an index buffer.


Unlocks a vertex buffer.


This method allows the user to change the mesh declaration without changing the data layout of the vertex buffer. The call is valid only if the old and new declaration formats have the same vertex size.


To obtain the ID3DXMesh interface, call either the D3DXCreateMesh or D3DXCreateMeshFVF function.

This interface inherits additional functionality from the ID3DXBaseMesh interface.

This interface, like all Component Object Model (COM) interfaces, inherits additional functionality from the IUnknown interface.

The LPD3DXMESH type is defined as a pointer to the ID3DXMesh interface.

typedef struct ID3DXMesh *LPD3DXMESH;

Interface Information

Inherits fromID3DXBaseMesh
Import libraryd3dx9.lib
Minimum operating systems Windows 98

See Also

Mesh Functions

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