ID3DXPatchMesh::GetTessSize method

Gets the size of the tessellated mesh, given a tessellation level.

Syntax

HRESULT GetTessSize(
  [in]  FLOAT fTessLevel,
  [in]  DWORD Adaptive,
  [out] DWORD *NumTriangles,
  [out] DWORD *NumVertices
);

Parameters

fTessLevel [in]

Type: FLOAT

Tessellation level.

Adaptive [in]

Type: DWORD

Adaptive tessellation. For adaptive tessellation, set this value to TRUE and set fTessLevel to the maximum tessellation value. This will result in the maximum mesh size necessary for adaptive tessellation.

NumTriangles [out]

Type: DWORD*

Pointer to the number of triangles generated by the tessellated mesh.

NumVertices [out]

Type: DWORD*

Pointer to the number of vertices generated by the tessellated mesh.

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

This method assumes uniform tessellation.

Requirements

Requirement	Value
Header	D3DX9Mesh.h
Library	D3dx9.lib

See also

ID3DXPatchMesh