PFND3DDDI_OFFERRESOURCES callback function (d3dumddi.h)
Called by the Microsoft Direct3D runtime to request that the user-mode display driver offer video memory resources for reuse.
Syntax
PFND3DDDI_OFFERRESOURCES Pfnd3dddiOfferresources;
HRESULT Pfnd3dddiOfferresources(
HANDLE hDevice,
const D3DDDIARG_OFFERRESOURCES *unnamedParam2
)
{...}
Parameters
hDevice
A handle to the display device (graphics context).
unnamedParam2
pData [in]
A pointer to a D3DDDIARG_OFFERRESOURCES structure that defines the video memory resources that the driver offers.
Return value
Returns one of the following values.
| Return code | Description |
|---|---|
| S_OK | The video memory resources were successfully offered. |
| D3DDDIERR_DEVICEREMOVED | The driver detected that the display adapter was removed, so the driver did not complete the operation. If the driver is not aware of the adapter removal, the driver is not required to return this error code. |
Remarks
If the user-mode driver does not have outstanding work queued that references an allocation that it has been asked to offer, then it can offer the allocation immediately or postpone the offer until the next call is made to the Flush or Present functions. However, the driver must always process all batched offer calls that have been submitted through Flush or Present.
If the driver uses the renaming service of the video memory manager, then the driver should offer the last allocation instance.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 |
| Minimum supported server | Windows Server 2012 |
| Target Platform | Desktop |
| Header | d3dumddi.h (include D3dumddi.h) |