// d3dumddi.h

PFND3DDDI_CREATEEXTENSIONDEVICE Pfnd3dddiCreateextensiondevice;

HRESULT Pfnd3dddiCreateextensiondevice(
  HANDLE hDevice,
  D3DDDIARG_CREATEEXTENSIONDEVICE *unnamedParam2
)
{...}
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nc-d3dumddi-pfnd3dddi_createextensiondevice)

PFND3DDDI_CREATEEXTENSIONDEVICE callback function

Description

The CreateExtensionDevice function creates a DirectX Video Acceleration (DXVA) extension device.

Parameters

`hDevice`

A handle to the display device (graphics context).

`unnamedParam2`

pData [in, out]

A pointer to a D3DDDIARG_CREATEEXTENSIONDEVICE structure. On input, this structure contains information that the driver can use. On output, the driver specifies information in the structure that the Direct3D runtime can use.

Return value

CreateExtensionDevice returns one of the following values:

Return code	Description
S_OK	The extension device is successfully created.
E_OUTOFMEMORY	CreateExtensionDevice couldn't allocate the required memory for it to complete.

Remarks

For more information, see Creating and Using a DirectX VA 2.0 Extension Device.

PFND3DDDI_CREATEEXTENSIONDEVICE - NtDoc