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A callback function that must be implemented by a user to set a light.
Syntax
HRESULT SetLight(
DWORD Index, CONST D3DLIGHT9* pLight );
Parameters
- Index
- [in] The zero-based index of the light. This is the same index in IDirect3DDevice9::SetLight.
- pLight
- [in] The light object. See D3DLIGHT9.
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::SetLight) will fail.