Nvidia Quadro FX 4800 - Page 55

NVIDIA Corporation
Quadro FX 4800/5800 and Quadro CX SDI User’s Guide – Version 1.0 51
C
HAPTER 5
API Control
// using the OpenGL application interface. Closing an
// OpenGL handle releases the device.
// Parameters: hGvoHandle - Handle to graphics adapter
// Returns: NV_OK - Success
//---------------------------------------------------------------------
NVRESULT NVAPIENTRY NvGvoClose(NVGVOHANDLE hGvoHandle IN);
NvGvoDesktopOpen()
//---------------------------------------------------------------------
// Function: NvGvoDesktopOpen
// Description: Open graphics adapter for Graphics to Video operations
// using the Desktop transparent mode interface. Read
// operations are permitted in this mode by multiple clients,
// but write operations are application exclusive.
// Parameters: nAdapterNumber - Graphics adapter number
// nReserved - Reserved (must be set to zero)
// dwClass - Class interface (NVGVOCLASS_* value)
// dwAccessRights - Access rights (NVGVO_O_* mask)
// phGvoHandle - Pointer to receive handle
// Returns: NV_OK - Success
// NV_ACCESSDENIED - Access denied for requested access
//---------------------------------------------------------------------
NVRESULT NVAPIENTRY NvGvoDesktopOpen(UINT nAdapterNumber IN,
UINT nReserved IN,
DWORD dwClass IN,
DWORD dwAccessRights IN,
NVGVOHANDLE* phGvoHandle OUT);
NvGvoDesktopClose()
//---------------------------------------------------------------------
// Function: NvGvoDesktopClose
// Description: Closes graphics adapter for Graphics to Video operations
// using the Desktop transparent mode interface.
// Parameters: hGvoHandle - Handle to graphics adapter
// bGvoRelease - TRUE to release device when handle closes
// FALSE to remain in desktop mode when handle
// closes (other clients can open using
// NvGvoDesktopOpen and release using
// NvGvoDesktopClose)
// Returns: NV_OK - Success