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A callback function that must be implemented by a user to set a flexible vertex format (FVF) code.
Syntax
HRESULT SetFVF(
DWORD FVF );
Parameters
- FVF
- [in] The FVF constant, that detemines how to interpret vertex data. See D3DFVF.
Return Value
The user-implemented method should return S_OK. If the callback fails when setting the device state, either of the following will occur:
- The effect will fail during ID3DXEffect::BeginPass.
- The dynamic effect state call (such as IDirect3DDevice9::SetFVF) will fail.