mirror of
https://github.com/reactos/reactos.git
synced 2024-12-29 02:25:17 +00:00
135 lines
3 KiB
C
135 lines
3 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* PURPOSE: Native driver for dxg implementation
|
|
* FILE: win32ss/reactx/dxg/main.c
|
|
* PROGRAMER: Magnus olsen (magnus@greatlord.com)
|
|
* REVISION HISTORY:
|
|
* 15/10-2007 Magnus Olsen
|
|
*/
|
|
|
|
#include <dxg_int.h>
|
|
#include "dxg_driver.h"
|
|
|
|
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;
|
|
|
|
|
|
NTSTATUS NTAPI
|
|
DriverEntry(IN PVOID Context1,
|
|
IN PVOID Context2)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
NTSTATUS
|
|
APIENTRY
|
|
DxDdStartupDxGraphics (ULONG SizeEngDrv,
|
|
PDRVENABLEDATA pDxEngDrv,
|
|
ULONG SizeDxgDrv,
|
|
PDRVENABLEDATA pDxgDrv,
|
|
PULONG DirectDrawContext,
|
|
PEPROCESS Proc )
|
|
{
|
|
|
|
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;
|
|
}
|
|
|
|
NTSTATUS
|
|
APIENTRY
|
|
DxDdCleanupDxGraphics(VOID)
|
|
{
|
|
DdHmgDestroy();
|
|
|
|
if (ghsemDummyPage != 0 )
|
|
{
|
|
if (gpDummyPage != 0 )
|
|
{
|
|
ExFreePoolWithTag(gpDummyPage,0);
|
|
gpDummyPage = NULL;
|
|
gcDummyPageRefCnt = 0;
|
|
}
|
|
EngDeleteSemaphore(ghsemDummyPage);
|
|
ghsemDummyPage = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|