VHMapVRAM - Syntax

Description: 

VHMapVRAM converts the physical address of VRAM to linear virtual aperture 
for both process and global ring 0 context. 

#include <GRADD.h>

ULONG      ulPhysAddr;  /*  Physical address of the start of the VRAM aperture. */
ULONG      ulLength;    /*  Length of VRAM aperture. */
PBYTE     *pVRAM;       /*  Returned process virtual linear aperture pointer. */
PBYTE     *pVRAMRing0;  /*  Returned ring 0 virtual linear aperture pointer. */
ULONG      rc;          /*  Return value. */

rc = VHMapVRAM(ulPhysAddr, ulLength, pVRAM,
       pVRAMRing0);