PAGP_RELEASE_VIRTUAL callback function (videoagp.h)
The AgpReleaseVirtual function frees system memory reserved by a previous call to AgpReserveVirtual.
Syntax
PAGP_RELEASE_VIRTUAL PagpReleaseVirtual;
void PagpReleaseVirtual(
[in] IN PVOID HwDeviceExtension,
[in] IN PVOID VirtualReserveContext
)
{...}
Parameters
[in] HwDeviceExtension
Pointer to the miniport driver's device extension.
[in] VirtualReserveContext
Is the context handle that identifies the reserved virtual address range to be released. This context was obtained from AgpReleaseVirtual.
Return value
None
Remarks
The miniport driver must call AgpFreeVirtual to unmap all committed memory within the range identified by VirtualReserveContext before calling AgpReleaseVirtual to release it.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 2000 and later versions of the Windows operating systems. |
| Target Platform | Desktop |
| Header | videoagp.h (include Video.h) |
| IRQL | PASSIVE_LEVEL |