ID3DXPatchMesh::GenerateAdjacency method

Generate a list of mesh edges and the patches that share each edge.

Syntax

HRESULT GenerateAdjacency(
  [in] FLOAT fTolerance
);

Parameters

fTolerance [in]

Type: FLOAT

Specifies that vertices that differ in position by less than the tolerance should be treated as coincident.

Return value

Type: HRESULT

If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, E_OUTOFMEMORY.

Remarks

After an application generates adjacency information for a mesh, the mesh data can be optimized for better drawing performance. This method determines which patches are adjacent (within the provided tolerance). This information is used internally to optimize tessellation.

Requirements

Requirement	Value
Header	D3DX9Mesh.h
Library	D3dx9.lib

See also

ID3DXPatchMesh

ID3DXPatchMesh::Optimize