PFNDDXGIDDI_PRESENTCB callback function (dxgiddi.h)
The pfnPresentCbDXGI function copies content from a source allocation to a destination allocation.
Syntax
PFNDDXGIDDI_PRESENTCB PfnddxgiddiPresentcb;
HRESULT PfnddxgiddiPresentcb(
HANDLE hDevice,
DXGIDDICB_PRESENT *unnamedParam2
)
{...}
Parameters
hDevice
[in] A handle to a display device (graphics context).
unnamedParam2
[in] pPresentData is a pointer to a DXGIDDICB_PRESENT structure that describes the source and destination allocations that content is copied from and to.
Return value
pfnPresentCbDXGI returns one of the following values:
| Return code | Description |
|---|---|
| S_OK | Content was successfully copied. |
| E_OUTOFMEMORY | pfnPresentCbDXGI could not complete because of insufficient memory. |
| E_INVALIDARG | Parameters were validated and determined to be incorrect. |
Remarks
The pDXGIContext member of the DXGIDDICB_PRESENT structure that the pPresentData parameter points to is an opaque communication mechanism. The runtime passes this DXGI context to the driver in the pDXGIContext member of the DXGI_DDI_ARG_PRESENT structure when the runtime calls the driver's PresentDXGI function. The driver should copy this DXGI context unchanged to the pDXGIContext member of DXGIDDICB_PRESENT when the driver calls pfnPresentCbDXGI.
The Direct3D runtime restricts the set of formats that can be presented through a bit-block transfer (bitblt) operation. For more information about the restrictions, see the Remarks section of the BltDXGI reference page.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista |
| Target Platform | Desktop |
| Header | dxgiddi.h (include D3d10umddi.h) |