ID3DXEffectStateManager.SetTextureStageState

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
interface ID3DXEffectStateManager
extern (Windows)
HRESULT
SetTextureStageState
(
DWORD Stage
,
D3DTEXTURESTAGESTATETYPE Type
,
DWORD Value
)

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