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ddraw: Implement ForceRefreshRate registry entry for overriding DirectX refresh rate.

This commit is contained in:
Denver Gingerich 2008-03-10 12:44:38 -04:00 committed by Alexandre Julliard
parent 9978cc9c56
commit 248ae8f112
3 changed files with 99 additions and 30 deletions
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71
dlls/ddraw/ddraw.c
View File

@ -3,6 +3,7 @@
* Copyright 1998-2000 Lionel Ulmer
* Copyright 2000-2001 TransGaming Technologies Inc.
* Copyright 2006 Stefan Dösinger
* Copyright 2008 Denver Gingerich
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -534,29 +535,19 @@ IDirectDrawImpl_SetCooperativeLevel(IDirectDraw7 *iface,
}
/*****************************************************************************
* IDirectDraw7::SetDisplayMode
*
* Sets the display screen resolution, color depth and refresh frequency
* when in fullscreen mode (in theory).
* Possible return values listed in the SDK suggest that this method fails
* when not in fullscreen mode, but this is wrong. Windows 2000 happily sets
* the display mode in DDSCL_NORMAL mode without an hwnd specified.
* It seems to be valid to pass 0 for With and Height, this has to be tested
* It could mean that the current video mode should be left as-is. (But why
* call it then?)
* Helper function for SetDisplayMode and RestoreDisplayMode
*
* Params:
* Height, Width: Screen dimension
* BPP: Color depth in Bits per pixel
* Refreshrate: Screen refresh rate
* Flags: Other stuff
*
* Returns
* DD_OK on success
* Implements DirectDraw's SetDisplayMode, but ignores the value of
* ForceRefreshRate, since it is already handled by
* IDirectDrawImpl_SetDisplayMode. RestoreDisplayMode can use this function
* without worrying that ForceRefreshRate will override the refresh rate. For
* argument and return value documentation, see
* IDirectDrawImpl_SetDisplayMode.
*
*****************************************************************************/
static HRESULT WINAPI
IDirectDrawImpl_SetDisplayMode(IDirectDraw7 *iface,
static HRESULT
IDirectDrawImpl_SetDisplayModeNoOverride(IDirectDraw7 *iface,
DWORD Width,
DWORD Height,
DWORD BPP,
@ -615,6 +606,46 @@ IDirectDrawImpl_SetDisplayMode(IDirectDraw7 *iface,
};
}
/*****************************************************************************
* IDirectDraw7::SetDisplayMode
*
* Sets the display screen resolution, color depth and refresh frequency
* when in fullscreen mode (in theory).
* Possible return values listed in the SDK suggest that this method fails
* when not in fullscreen mode, but this is wrong. Windows 2000 happily sets
* the display mode in DDSCL_NORMAL mode without an hwnd specified.
* It seems to be valid to pass 0 for With and Height, this has to be tested
* It could mean that the current video mode should be left as-is. (But why
* call it then?)
*
* Params:
* Height, Width: Screen dimension
* BPP: Color depth in Bits per pixel
* Refreshrate: Screen refresh rate
* Flags: Other stuff
*
* Returns
* DD_OK on success
*
*****************************************************************************/
static HRESULT WINAPI
IDirectDrawImpl_SetDisplayMode(IDirectDraw7 *iface,
DWORD Width,
DWORD Height,
DWORD BPP,
DWORD RefreshRate,
DWORD Flags)
{
if (force_refresh_rate != 0)
{
TRACE("ForceRefreshRate overriding passed-in refresh rate (%d Hz) to %d Hz\n", RefreshRate, force_refresh_rate);
RefreshRate = force_refresh_rate;
}
return IDirectDrawImpl_SetDisplayModeNoOverride(iface, Width, Height, BPP,
RefreshRate, Flags);
}
/*****************************************************************************
* IDirectDraw7::RestoreDisplayMode
*
@ -642,7 +673,7 @@ IDirectDrawImpl_RestoreDisplayMode(IDirectDraw7 *iface)
ICOM_THIS_FROM(IDirectDrawImpl, IDirectDraw7, iface);
TRACE("(%p)\n", This);
return IDirectDraw7_SetDisplayMode(ICOM_INTERFACE(This, IDirectDraw7),
return IDirectDrawImpl_SetDisplayModeNoOverride(ICOM_INTERFACE(This, IDirectDraw7),
This->orig_width,
This->orig_height,
This->orig_bpp,

2
dlls/ddraw/ddraw_private.h
View File

@ -83,6 +83,8 @@ extern ULONG WINAPI D3D7CB_DestroyDepthStencilSurface(IWineD3DSurface *pSurface)
/* Global critical section */
extern CRITICAL_SECTION ddraw_cs;
extern DWORD force_refresh_rate;
/*****************************************************************************
* IDirectDraw implementation structure
*****************************************************************************/

36
dlls/ddraw/main.c
View File

@ -4,6 +4,7 @@
* Copyright 1998 Lionel Ulmer
* Copyright 2000-2001 TransGaming Technologies Inc.
* Copyright 2006 Stefan Dösinger
* Copyright 2008 Denver Gingerich
*
* This file contains the (internal) driver registration functions,
* driver enumeration APIs and DirectDraw creation functions.
@ -68,6 +69,9 @@ static CRITICAL_SECTION_DEBUG ddraw_cs_debug =
};
CRITICAL_SECTION ddraw_cs = { &ddraw_cs_debug, -1, 0, 0, 0, 0 };
/* value of ForceRefreshRate */
DWORD force_refresh_rate = 0;
/***********************************************************************
*
* Helper function for DirectDrawCreate and friends
@ -886,6 +890,38 @@ DllMain(HINSTANCE hInstDLL,
}
}
/* On Windows one can force the refresh rate that DirectDraw uses by
* setting an override value in dxdiag. This is documented in KB315614
* (main article), KB230002, and KB217348. By comparing registry dumps
* before and after setting the override, we see that the override value
* is stored in HKLM\Software\Microsoft\DirectDraw\ForceRefreshRate as a
* DWORD that represents the refresh rate to force. We use this
* registry entry to modify the behavior of SetDisplayMode so that Wine
* users can override the refresh rate in a Windows-compatible way.
*
* dxdiag will not accept a refresh rate lower than 40 or higher than
* 120 so this value should be within that range. It is, of course,
* possible for a user to set the registry entry value directly so that
* assumption might not hold.
*
* There is no current mechanism for setting this value through the Wine
* GUI. It would be most appropriate to set this value through a dxdiag
* clone, but it may be sufficient to use winecfg.
*
* TODO: Create a mechanism for setting this value through the Wine GUI.
*/
if ( !RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Microsoft\\DirectDraw", &hkey ) )
{
DWORD type, data;
size = sizeof(data);
if (!RegQueryValueExA( hkey, "ForceRefreshRate", NULL, &type, (LPBYTE)&data, &size ) && type == REG_DWORD)
{
TRACE("ForceRefreshRate set; overriding refresh rate to %d Hz\n", data);
force_refresh_rate = data;
}
RegCloseKey( hkey );
}
DisableThreadLibraryCalls(hInstDLL);
}
else if (Reason == DLL_PROCESS_DETACH)