[hbelusca] 68720: [NTVDM] Restore the correct screen buffer when reattaching the video to the console. WIP
16 Aug
2015
16 Aug
'15
7 p.m.
Author: hbelusca
Date: Sun Aug 16 19:00:21 2015
New Revision: 68720
URL: http://svn.reactos.org/svn/reactos?rev=68720&view=rev
Log:
[NTVDM]
Restore the correct screen buffer when reattaching the video to the console. WIP
Modified:
trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.c
trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.h
Modified: trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/bios…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c [iso-8859-1] Sun Aug 16 19:00:21
2015
@@ -3863,17 +3863,20 @@
Attached = TRUE;
}
+ /* Refresh display */
VgaRefreshDisplay();
VidBiosSyncCursorPosition();
}
VOID VidBiosDetachFromConsole(VOID)
{
- /* Perform another screen refresh */
+ if (!Attached) return;
+
+ /* Refresh display */
VgaRefreshDisplay();
/* Detach from the console */
- VgaDetachFromConsole(FALSE);
+ VgaDetachFromConsole();
Attached = FALSE;
}
Modified: trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/hard…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.c [iso-8859-1] Sun Aug 16
19:00:21 2015
@@ -209,6 +209,7 @@
/*
* Console interface -- VGA-mode-agnostic
*/
+// WARNING! This structure *MUST BE* in sync with the one in
consrv/include/conio_winsrv.h
typedef struct _CHAR_CELL
{
CHAR Char;
@@ -228,6 +229,9 @@
static CONSOLE_CURSOR_INFO OrgConsoleCursorInfo;
static CONSOLE_SCREEN_BUFFER_INFO OrgConsoleBufferInfo;
+
+
+static HANDLE ScreenBufferHandle = NULL;
/*
@@ -473,7 +477,7 @@
* Windows 2k3 winsrv.dll calls NtVdmControl(VdmQueryVdmProcess == 14,
&ConsoleHandle);
* in the two following APIs:
* SrvRegisterConsoleVDM (corresponding Win32 API: RegisterConsoleVDM)
- * SrvVDMConsoleOperation (corresponding Win32 API: )
+ * SrvVDMConsoleOperation (corresponding Win32 API: ??)
* to check whether the current process is a VDM process, and fails otherwise
* with the error 0xC0000022 (STATUS_ACCESS_DENIED).
*
@@ -481,6 +485,7 @@
* BaseSrvIsFirstVDM API...
*/
+ /* Register with the console server */
Success =
__RegisterConsoleVDM(1,
StartEvent,
@@ -577,6 +582,28 @@
return TRUE;
}
+static VOID VgaDetachFromConsoleInternal(VOID)
+{
+ ULONG dummyLength;
+ PVOID dummyPtr;
+ COORD dummySize = {0};
+
+ /* Deregister with the console server */
+ __RegisterConsoleVDM(0,
+ NULL,
+ NULL,
+ NULL,
+ 0,
+ &dummyLength,
+ &dummyPtr,
+ NULL,
+ 0,
+ dummySize,
+ &dummyPtr);
+
+ TextFramebuffer = NULL;
+}
+
static BOOL IsConsoleHandle(HANDLE hHandle)
{
DWORD dwMode;
@@ -1023,7 +1050,7 @@
if (TextResolution.X != Resolution->X ||
TextResolution.Y != Resolution->Y)
{
- VgaDetachFromConsole(TRUE);
+ VgaDetachFromConsoleInternal();
/*
* VgaAttachToConsoleInternal sets TextResolution to the
@@ -1047,7 +1074,7 @@
/*
* Set the text mode palette.
*
- * WARNING: This call should fail on Windows (and therefore
+ * INFORMATION: This call should fail on Windows (and therefore
* we get the default palette and our external behaviour is
* just like Windows' one), but it should success on ReactOS
* (so that we get console palette changes even for text-mode
@@ -1077,25 +1104,20 @@
: GRAPHICS_MODE;
/*
- * No need to switch to a different screen mode + resolution
- * if the new ones are the same as the old ones.
+ * Do not switch to a different screen mode + resolution if the new settings
+ * are the same as the old ones. Just repaint the full screen.
*/
- if ((ScreenMode == NewScreenMode) &&
+ if ((ScreenMode == NewScreenMode) && // CurrResolution == NewResolution
(CurrResolution.X == NewResolution.X && CurrResolution.Y ==
NewResolution.Y))
{
goto Quit;
}
+ /* Leave the current video mode */
if (ScreenMode == GRAPHICS_MODE)
- {
- /* Leave the current graphics mode */
VgaLeaveGraphicsMode();
- }
else
- {
- /* Leave the current text mode */
VgaLeaveTextMode();
- }
/* Update the current resolution */
CurrResolution = NewResolution;
@@ -2270,91 +2292,90 @@
BOOL VgaAttachToConsole(VOID)
{
- //
- // FIXME: We should go back to the saved screen state
- //
if (TextResolution.X == 0 || TextResolution.Y == 0)
DPRINT1("VgaAttachToConsole -- TextResolution uninitialized\n");
if (TextResolution.X == 0) TextResolution.X = 80;
if (TextResolution.Y == 0) TextResolution.Y = 25;
- return VgaAttachToConsoleInternal(&TextResolution);
-}
-
-VOID VgaDetachFromConsole(BOOL ChangingMode)
-{
- ULONG dummyLength;
- PVOID dummyPtr;
- COORD dummySize = {0};
-
- //
- // FIXME: We should save the screen state
- //
-
- __RegisterConsoleVDM(0,
- NULL,
- NULL,
- NULL,
- 0,
- &dummyLength,
- &dummyPtr,
- NULL,
- 0,
- dummySize,
- &dummyPtr);
-
- TextFramebuffer = NULL;
-
- if (!ChangingMode)
- {
- SMALL_RECT ConRect;
-
- /* Restore the old screen buffer */
- VgaSetActiveScreenBuffer(TextConsoleBuffer);
-
- /* Restore the original console size */
- ConRect.Left = 0;
- ConRect.Top = 0;
- ConRect.Right = ConRect.Left + OrgConsoleBufferInfo.srWindow.Right -
OrgConsoleBufferInfo.srWindow.Left;
- ConRect.Bottom = ConRect.Top + OrgConsoleBufferInfo.srWindow.Bottom -
OrgConsoleBufferInfo.srWindow.Top ;
- /*
- * See the following trick explanation in VgaAttachToConsoleInternal.
- */
- SetConsoleScreenBufferSize(TextConsoleBuffer, OrgConsoleBufferInfo.dwSize);
- SetConsoleWindowInfo(TextConsoleBuffer, TRUE, &ConRect);
- SetConsoleScreenBufferSize(TextConsoleBuffer, OrgConsoleBufferInfo.dwSize);
-
- /* Restore the original cursor shape */
- SetConsoleCursorInfo(TextConsoleBuffer, &OrgConsoleCursorInfo);
- }
+ // VgaDetachFromConsoleInternal();
+
+ /*
+ * VgaAttachToConsoleInternal sets TextResolution to the
+ * new resolution and updates ConsoleInfo.
+ */
+ if (!VgaAttachToConsoleInternal(&TextResolution))
+ {
+ DisplayMessage(L"An unexpected error occurred!\n");
+ EmulatorTerminate();
+ return FALSE;
+ }
+
+ /* Restore the screen state */
+ /* Restore the original screen buffer */
+ ASSERT(ScreenBufferHandle);
+ VgaSetActiveScreenBuffer(ScreenBufferHandle);
+ ScreenBufferHandle = NULL;
+
+ return TRUE;
+}
+
+VOID VgaDetachFromConsole(VOID)
+{
+ SMALL_RECT ConRect;
+
+ VgaDetachFromConsoleInternal();
+
+ /* Save the screen state */
+ if (ScreenMode == TEXT_MODE)
+ ScreenBufferHandle = TextConsoleBuffer;
+ else
+ ScreenBufferHandle = GraphicsConsoleBuffer;
+
+ /* Restore the old text-mode screen buffer */
+ VgaSetActiveScreenBuffer(TextConsoleBuffer);
+
+ /* Restore the original console size */
+ ConRect.Left = 0;
+ ConRect.Top = 0;
+ ConRect.Right = ConRect.Left + OrgConsoleBufferInfo.srWindow.Right -
OrgConsoleBufferInfo.srWindow.Left;
+ ConRect.Bottom = ConRect.Top + OrgConsoleBufferInfo.srWindow.Bottom -
OrgConsoleBufferInfo.srWindow.Top ;
+ /*
+ * See the following trick explanation in VgaAttachToConsoleInternal.
+ */
+ SetConsoleScreenBufferSize(TextConsoleBuffer, OrgConsoleBufferInfo.dwSize);
+ SetConsoleWindowInfo(TextConsoleBuffer, TRUE, &ConRect);
+ SetConsoleScreenBufferSize(TextConsoleBuffer, OrgConsoleBufferInfo.dwSize);
+
+ /* Restore the original cursor shape */
+ SetConsoleCursorInfo(TextConsoleBuffer, &OrgConsoleCursorInfo);
}
BOOLEAN VgaInitialize(HANDLE TextHandle)
{
+ /* Save the default text-mode console output handle */
+ if (!IsConsoleHandle(TextHandle)) return FALSE;
+ TextConsoleBuffer = TextHandle;
+
+ /* Save the original cursor and console screen buffer information */
+ if (!GetConsoleCursorInfo(TextConsoleBuffer, &OrgConsoleCursorInfo) ||
+ !GetConsoleScreenBufferInfo(TextConsoleBuffer, &OrgConsoleBufferInfo))
+ {
+ return FALSE;
+ }
+ ConsoleInfo = OrgConsoleBufferInfo;
+
/* Clear the SEQ, GC, CRTC and AC registers */
RtlZeroMemory(VgaSeqRegisters, sizeof(VgaSeqRegisters));
RtlZeroMemory(VgaGcRegisters, sizeof(VgaGcRegisters));
RtlZeroMemory(VgaCrtcRegisters, sizeof(VgaCrtcRegisters));
RtlZeroMemory(VgaAcRegisters, sizeof(VgaAcRegisters));
- /* Save the default text-mode console output handle */
- if (!IsConsoleHandle(TextHandle)) return FALSE;
- TextConsoleBuffer = TextHandle;
-
- /* Save the original cursor and console screen buffer information */
- if (!GetConsoleCursorInfo(TextConsoleBuffer, &OrgConsoleCursorInfo) ||
- !GetConsoleScreenBufferInfo(TextConsoleBuffer, &OrgConsoleBufferInfo))
- {
- return FALSE;
- }
- ConsoleInfo = OrgConsoleBufferInfo;
-
/* Initialize the VGA palette and fail if it isn't successfully created */
if (!VgaInitializePalette()) return FALSE;
/***/ VgaResetPalette(); /***/
- /* Switch to the text buffer */
+ /* Switch to the text buffer, but do not enter into a text mode */
VgaSetActiveScreenBuffer(TextConsoleBuffer);
/* Reset the sequencer */
@@ -2391,21 +2412,19 @@
VOID VgaCleanup(VOID)
{
+ /* Do a final display refresh */
+ VgaRefreshDisplay();
+
DestroyHardwareTimer(VSyncTimer);
DestroyHardwareTimer(HSyncTimer);
+ /* Leave the current video mode */
if (ScreenMode == GRAPHICS_MODE)
- {
- /* Leave the current graphics mode */
VgaLeaveGraphicsMode();
- }
else
- {
- /* Leave the current text mode */
VgaLeaveTextMode();
- }
-
- VgaDetachFromConsole(FALSE);
+
+ VgaDetachFromConsole();
MemRemoveFastMemoryHook((PVOID)0xA0000, 0x20000);
CloseHandle(AnotherEvent);
Modified: trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/hard…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.h [iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/hardware/video/svga.h [iso-8859-1] Sun Aug 16
19:00:21 2015
@@ -372,7 +372,7 @@
VOID ScreenEventHandler(PWINDOW_BUFFER_SIZE_RECORD ScreenEvent);
BOOL VgaAttachToConsole(VOID);
-VOID VgaDetachFromConsole(BOOL ChangeMode);
+VOID VgaDetachFromConsole(VOID);
COORD VgaGetDisplayResolution(VOID);
VOID VgaRefreshDisplay(VOID);
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