Extracts coefficient data from a color channel of the buffer for a specified range of coefficients, and adds the data to an IDirect3DTexture9 object.
HRESULT ExtractTexture( UINT Channel, UINT StartCoefficient, UINT NumCoefficients, LPDIRECT3DTEXTURE9 pTexture );
If the method succeeds, the return value is S_OK. If the method fails, the return value can be one of the following: D3DERR_INVALIDCALL, E_OUTOFMEMORY.
Header: Declared in D3dx9mesh.h.