From 19462f737c1fbbbbf19392124444c596707e4fff Mon Sep 17 00:00:00 2001
From: Magnus Olsen <magnus@greatlord.com>
Date: Wed, 24 Oct 2007 11:05:44 +0000
Subject: [PATCH] add complete startup process code for dxg.sys

svn path=/branches/reactx/; revision=29848
---
 reactos/drivers/directx/dxg/dxg.rbuild |  2 ++
 reactos/drivers/directx/dxg/dxg_int.h  |  3 ++
 reactos/drivers/directx/dxg/eng.c      | 14 ++++++++
 reactos/drivers/directx/dxg/main.c     | 49 +++++++++++++++++++++-----
 reactos/drivers/directx/dxg/tags.h     |  8 +++++
 5 files changed, 67 insertions(+), 9 deletions(-)
 create mode 100644 reactos/drivers/directx/dxg/eng.c
 create mode 100644 reactos/drivers/directx/dxg/tags.h

diff --git a/reactos/drivers/directx/dxg/dxg.rbuild b/reactos/drivers/directx/dxg/dxg.rbuild
index 8a08f8f4e72..57421e86592 100644
--- a/reactos/drivers/directx/dxg/dxg.rbuild
+++ b/reactos/drivers/directx/dxg/dxg.rbuild
@@ -6,7 +6,9 @@ installbase="system32/drivers" installname="dxg.sys">
 	<include base="dxg">.</include>
 	<define name="__USE_W32API" />
 	<library>dxgthk</library>
+	<library>ntoskrnl</library>
 	<file>main.c</file>
+	<file>eng.c</file>
 	<file>historic.c</file>
 	<file>dxg.rc</file>
 </module>
diff --git a/reactos/drivers/directx/dxg/dxg_int.h b/reactos/drivers/directx/dxg/dxg_int.h
index a8340f79444..996b3941f80 100644
--- a/reactos/drivers/directx/dxg/dxg_int.h
+++ b/reactos/drivers/directx/dxg/dxg_int.h
@@ -27,6 +27,8 @@
 #include <reactos/drivers/directx/dxg.h>
 #include <reactos/drivers/directx/dxeng.h>
 
+#include "tags.h"
+
 
 /* exported functions */
 NTSTATUS DriverEntry(IN PVOID Context1, IN PVOID Context2);
@@ -39,5 +41,6 @@ DWORD STDCALL DxDxgGenericThunk(ULONG_PTR ulIndex, ULONG_PTR ulHandle, SIZE_T *p
 DWORD STDCALL DxDdIoctl(ULONG ulIoctl, PVOID pBuffer, ULONG ulBufferSize);
 
 /* Internel functions */
+BOOL DdHmgCreate();
 BOOL DdHmgDestroy();
 
diff --git a/reactos/drivers/directx/dxg/eng.c b/reactos/drivers/directx/dxg/eng.c
new file mode 100644
index 00000000000..f83a44bfa74
--- /dev/null
+++ b/reactos/drivers/directx/dxg/eng.c
@@ -0,0 +1,14 @@
+/*
+ * COPYRIGHT:        See COPYING in the top level directory
+ * PROJECT:          ReactOS kernel
+ * PURPOSE:          Native driver for dxg implementation
+ * FILE:             drivers/directx/dxg/main.c
+ * PROGRAMER:        Magnus olsen (magnus@greatlord.com)
+ * REVISION HISTORY:
+ *       15/10-2007   Magnus Olsen
+ */
+
+
+
+
+
diff --git a/reactos/drivers/directx/dxg/main.c b/reactos/drivers/directx/dxg/main.c
index 98756498971..52926cd513c 100644
--- a/reactos/drivers/directx/dxg/main.c
+++ b/reactos/drivers/directx/dxg/main.c
@@ -20,6 +20,11 @@ HSEMAPHORE ghsemHmgr = NULL;
 HSEMAPHORE ghsemDummyPage = NULL;
 VOID *gpDummyPage = NULL;
 PEPROCESS gpepSession = NULL;
+PLARGE_INTEGER gpLockShortDelay = NULL;
+HANDLE ghFreeDdHmgr = 0;
+VOID *gpentDdHmgr = NULL;
+VOID *gpentDdHmgrLast = NULL;
+
 
 PDRVFN gpEngFuncs;
 const ULONG gcDxgFuncs = DXG_INDEX_DxDdIoctl + 1;
@@ -92,7 +97,6 @@ DxDdStartupDxGraphics (ULONG SizeEngDrv,
     /* Note 12/1-2004 : Why is this set to 0x618 */
     *DirectDrawContext = 0x618;
 
-#if 0
     if (DdHmgCreate())
     {
         ghsemDummyPage = EngCreateSemaphore();
@@ -103,7 +107,6 @@ DxDdStartupDxGraphics (ULONG SizeEngDrv,
             return STATUS_SUCCESS;
         }
     }
-#endif 
 
     DdHmgDestroy();
 
@@ -119,16 +122,13 @@ DxDdStartupDxGraphics (ULONG SizeEngDrv,
 NTSTATUS
 DxDdCleanupDxGraphics()
 {
-
     DdHmgDestroy();
 
     if (!ghsemDummyPage)
     {
         if (!gpDummyPage)
         {
-#if 0
             ExFreePoolWithTag(gpDummyPage,0);
-#endif
             gpDummyPage = NULL;
             gcDummyPageRefCnt = 0;
         }
@@ -143,16 +143,15 @@ DdHmgDestroy()
 {
     gcMaxDdHmgr = 0;
     gcSizeDdHmgr = 0;
-#if 0
     ghFreeDdHmgr = 0;
-    gpentDdHmgrLast = 0;
+    gpentDdHmgrLast = NULL;
 
     if (gpentDdHmgr)
     {
         EngFreeMem(gpentDdHmgr);
-        gpentDdHmgr = 0; 
+        gpentDdHmgr = NULL; 
     }
-#endif
+
     if (ghsemHmgr)
     {
         EngDeleteSemaphore(ghsemHmgr);
@@ -162,3 +161,35 @@ DdHmgDestroy()
     return TRUE;
 }
 
+
+BOOL
+DdHmgCreate()
+{
+    gpentDdHmgr = EngAllocMem(FL_ZERO_MEMORY, gcSizeDdHmgr, TAG_THDD);
+    ghFreeDdHmgr = 0;
+    gcMaxDdHmgr = 1;
+
+    if (gpentDdHmgr)
+    {
+        ghsemHmgr = EngCreateSemaphore();
+
+        if (ghsemHmgr)
+        {
+            gpLockShortDelay = EngAllocMem(FL_ZERO_MEMORY | FL_NONPAGED_MEMORY, sizeof(LARGE_INTEGER), TAG_GINI);
+
+            if (gpLockShortDelay)
+            {
+                gpLockShortDelay->QuadPart = ((LONGLONG)-100000);
+                return TRUE;
+            }
+
+            EngDeleteSemaphore(ghsemHmgr);
+            ghsemHmgr = NULL;
+        }
+
+        EngFreeMem(gpentDdHmgr);
+        gpentDdHmgr = NULL;
+    }
+
+    return FALSE;
+}
diff --git a/reactos/drivers/directx/dxg/tags.h b/reactos/drivers/directx/dxg/tags.h
new file mode 100644
index 00000000000..2dadac66208
--- /dev/null
+++ b/reactos/drivers/directx/dxg/tags.h
@@ -0,0 +1,8 @@
+
+
+
+#define TAG_THDD    TAG('t', 'h', 'd', 'd')
+#define TAG_GINI    TAG('G', 'i', 'n', 'i')
+
+
+