ID3D11DeviceContext::GetData

DX11 vtable[29] → HRESULT

ID3D11DeviceContext::GetData is a method of the COM interface ID3D11DeviceContext in Direct3D 11. Its function pointer sits at vtable index 29 — the zero-based slot in that interface's virtual method table, counted from QueryInterface and including every entry inherited from a base interface. It takes 4 parameters (pAsync, pData, DataSize, GetDataFlags) and returns HRESULT.

COM methods are reached through that table rather than by an exported name, so the slot index is what a wrapper, an interface hook or a disassembly listing has to resolve against. The parameter order and types below are the ones this interface declares.