// d3dumddi.h

PFND3DDDI_DISCARD Pfnd3dddiDiscard;

HRESULT Pfnd3dddiDiscard(
  HANDLE hDevice,
  const D3DDDIARG_DISCARD *unnamedParam2
)
{...}
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Windows Driver Kit DDI reference (nc-d3dumddi-pfnd3dddi_discard)

PFND3DDDI_DISCARD callback function

Description

Discards (evicts) a set of subresources from video display memory. Implemented by Windows Display Driver Model (WDDM) 1.2 and later user-mode display drivers.

Parameters

`hDevice`

A handle to the display device (graphics context).

`unnamedParam2`

pData [in]

A pointer to a D3DDDIARG_DISCARD structure that defines the set of subresources that is to be discarded.

Return value

Returns S_OK if successful, or an appropriate error result if the operation is not successful.

PFND3DDDI_DISCARD - NtDoc