#include <dxg_int.h>
#include "dxg_driver.h"

Include dependency graph for main.c:

Functions
NTSTATUS NTAPI	DriverEntry (IN PVOID Context1, IN PVOID Context2)

NTSTATUS APIENTRY	DxDdStartupDxGraphics (ULONG SizeEngDrv, PDRVENABLEDATA pDxEngDrv, ULONG SizeDxgDrv, PDRVENABLEDATA pDxgDrv, PULONG DirectDrawContext, PEPROCESS Proc)

NTSTATUS APIENTRY	DxDdCleanupDxGraphics (VOID)

Variables
LONG	gcDummyPageRefCnt = 0

HSEMAPHORE	ghsemDummyPage = NULL

VOID *	gpDummyPage = NULL

PEPROCESS	gpepSession = NULL

PLARGE_INTEGER	gpLockShortDelay = NULL

DXENG_FUNCTIONS	gpEngFuncs

const ULONG	gcDxgFuncs = DXG_INDEX_DxDdIoctl + 1

Function Documentation

◆ DriverEntry()

NTSTATUS NTAPI DriverEntry	(	IN PVOID	Context1,
		IN PVOID	Context2
	)

Definition at line 26 of file main.c.

{
    return 0;
}

◆ DxDdCleanupDxGraphics()

NTSTATUS APIENTRY DxDdCleanupDxGraphics ( VOID )

Definition at line 118 of file main.c.

{
    DdHmgDestroy();
 
    if (ghsemDummyPage != 0 )
    {
        if (gpDummyPage != 0 )
        {
            ExFreePoolWithTag(gpDummyPage,0);
            gpDummyPage = NULL;
            gcDummyPageRefCnt = 0;
        }
        EngDeleteSemaphore(ghsemDummyPage);
        ghsemDummyPage = 0;
    }
 
    return 0;
}

◆ DxDdStartupDxGraphics()

NTSTATUS APIENTRY DxDdStartupDxGraphics	(	ULONG	SizeEngDrv,
		PDRVENABLEDATA	pDxEngDrv,
		ULONG	SizeDxgDrv,
		PDRVENABLEDATA	pDxgDrv,
		PULONG	DirectDrawContext,
		PEPROCESS	Proc
	)

Definition at line 34 of file main.c.

{
 
    PDRVFN drv_func;
    PFN *peng_funcs;
    UINT i;
 
    /* Test see if the data is vaild we got from win32k.sys */
    if ((SizeEngDrv != sizeof(DRVENABLEDATA)) ||
        (SizeDxgDrv != sizeof(DRVENABLEDATA)))
    {
        return STATUS_BUFFER_TOO_SMALL;
    }
 
    /* rest static value */
    gpDummyPage = NULL;
    gcDummyPageRefCnt = 0;
    ghsemDummyPage = NULL;
 
    /*
     * Setup internal driver functions list we got from dxg driver functions list
     */
    pDxgDrv->iDriverVersion = 0x80000; /* Note 12/1-2004 : DirectX 8 ? */
    pDxgDrv->c = gcDxgFuncs;
    pDxgDrv->pdrvfn = gaDxgFuncs;
 
    /* check how many driver functions and fail if the value does not match */
    if (pDxEngDrv->c !=  DXENG_INDEX_DxEngLoadImage + 1)
    {
        return STATUS_INTERNAL_ERROR;
    }
 
    /*
     * Check if all drv functions are sorted right
     * and if it really are exported
     */
 
    peng_funcs = (PFN*)&gpEngFuncs;
 
    for (i = 1; i < DXENG_INDEX_DxEngLoadImage + 1; i++)
    {
        drv_func = &pDxEngDrv->pdrvfn[i];
 
        if ((drv_func->iFunc != i) ||
            (drv_func->pfn == NULL))
        {
            return STATUS_INTERNAL_ERROR;
        }
 
        peng_funcs[i] = drv_func->pfn;
    }
 
    /* Note 12/1-2004 : Why is this set to 0x618 */
    *DirectDrawContext = 0x618;
 
    if (DdHmgCreate())
    {
        ghsemDummyPage = EngCreateSemaphore();
 
        if (ghsemDummyPage)
        {
            gpepSession = Proc;
            return STATUS_SUCCESS;
        }
    }
 
    DdHmgDestroy();
 
    if (ghsemDummyPage)
    {
        EngDeleteSemaphore(ghsemDummyPage);
        ghsemDummyPage = 0;
    }
 
    return STATUS_NO_MEMORY;
}