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Avoid redundant display mode changes

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This commit is contained in:
narzoul 2016-05-29 20:23:37 +02:00
parent 04fc3c808b
commit d68cafa522
5 changed files with 85 additions and 0 deletions
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61
DDrawCompat/CompatDisplayMode.cpp
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@ -10,6 +10,61 @@ namespace
HDC g_compatibleDc = nullptr;
CompatDisplayMode::DisplayMode g_emulatedDisplayMode = {};
template <typename CStr, typename DevMode,
typename ChangeDisplaySettingsExPtr, typename EnumDisplaySettingsPtr>
LONG changeDisplaySettingsEx(
ChangeDisplaySettingsExPtr origChangeDisplaySettings,
EnumDisplaySettingsPtr origEnumDisplaySettings,
CStr lpszDeviceName, DevMode* lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam)
{
DevMode targetDevMode = {};
if (lpDevMode)
{
targetDevMode = *lpDevMode;
}
else
{
targetDevMode.dmSize = sizeof(targetDevMode);
origEnumDisplaySettings(lpszDeviceName, ENUM_REGISTRY_SETTINGS, &targetDevMode);
}
if (targetDevMode.dmPelsWidth)
{
DevMode currentDevMode = {};
currentDevMode.dmSize = sizeof(currentDevMode);
origEnumDisplaySettings(lpszDeviceName, ENUM_CURRENT_SETTINGS, &currentDevMode);
if (targetDevMode.dmPelsWidth == currentDevMode.dmPelsWidth &&
targetDevMode.dmPelsHeight == currentDevMode.dmPelsHeight &&
targetDevMode.dmBitsPerPel == currentDevMode.dmBitsPerPel &&
targetDevMode.dmDisplayFrequency == currentDevMode.dmDisplayFrequency &&
targetDevMode.dmDisplayFlags == currentDevMode.dmDisplayFlags)
{
HANDLE dwmDxFullScreenTransitionEvent = OpenEventW(
EVENT_MODIFY_STATE, FALSE, L"DWM_DX_FULLSCREEN_TRANSITION_EVENT");
SetEvent(dwmDxFullScreenTransitionEvent);
CloseHandle(dwmDxFullScreenTransitionEvent);
return DISP_CHANGE_SUCCESSFUL;
}
}
return origChangeDisplaySettings(lpszDeviceName, lpDevMode, hwnd, dwflags, lParam);
}
LONG WINAPI changeDisplaySettingsExA(
LPCSTR lpszDeviceName, DEVMODEA* lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam)
{
return changeDisplaySettingsEx(CALL_ORIG_FUNC(ChangeDisplaySettingsExA),
CALL_ORIG_FUNC(EnumDisplaySettingsA), lpszDeviceName, lpDevMode, hwnd, dwflags, lParam);
}
LONG WINAPI changeDisplaySettingsExW(
LPCWSTR lpszDeviceName, DEVMODEW* lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam)
{
return changeDisplaySettingsEx(CALL_ORIG_FUNC(ChangeDisplaySettingsExW),
CALL_ORIG_FUNC(EnumDisplaySettingsW), lpszDeviceName, lpDevMode, hwnd, dwflags, lParam);
}
CompatPtr<IDirectDrawSurface7> createCompatibleSurface()
{
DDSURFACEDESC2 desc = {};
@ -151,6 +206,12 @@ namespace CompatDisplayMode
return dm;
}
void installHooks()
{
HOOK_FUNCTION(user32, ChangeDisplaySettingsExA, changeDisplaySettingsExA);
HOOK_FUNCTION(user32, ChangeDisplaySettingsExW, changeDisplaySettingsExW);
}
HRESULT restoreDisplayMode(CompatRef<IDirectDraw7> dd)
{
const HRESULT result = dd->RestoreDisplayMode(&dd);

2
DDrawCompat/CompatDisplayMode.h
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@ -17,6 +17,8 @@ namespace CompatDisplayMode
DWORD flags;
};
void installHooks();
HBITMAP WINAPI createCompatibleBitmap(HDC hdc, int cx, int cy);
HBITMAP WINAPI createDIBitmap(HDC hdc, const BITMAPINFOHEADER* lpbmih, DWORD fdwInit,
const void* lpbInit, const BITMAPINFO* lpbmi, UINT fuUsage);

17
DDrawCompat/DDrawLog.cpp
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@ -14,6 +14,13 @@ namespace
empty.dwSize = t.dwSize;
return 0 == memcmp(&t, &empty, sizeof(t));
}
template <typename DevMode>
std::ostream& streamDevMode(std::ostream& os, const DevMode& dm)
{
return os << "DM(" << dm.dmPelsWidth << ',' << dm.dmPelsHeight << ',' << dm.dmBitsPerPel <<
',' << dm.dmDisplayFrequency << ',' << dm.dmDisplayFlags << ')';
}
}
std::ostream& operator<<(std::ostream& os, const char* str)
@ -42,6 +49,16 @@ std::ostream& operator<<(std::ostream& os, const WCHAR* wstr)
return os << '"' << static_cast<const char*>(str) << '"';
}
std::ostream& operator<<(std::ostream& os, const DEVMODEA& dm)
{
return streamDevMode(os, dm);
}
std::ostream& operator<<(std::ostream& os, const DEVMODEW& dm)
{
return streamDevMode(os, dm);
}
std::ostream& operator<<(std::ostream& os, const RECT& rect)
{
return os << "R(" << rect.left << ',' << rect.top << ',' << rect.right << ',' << rect.bottom << ')';

2
DDrawCompat/DDrawLog.h
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@ -17,6 +17,8 @@
std::ostream& operator<<(std::ostream& os, const char* str);
std::ostream& operator<<(std::ostream& os, const unsigned char* data);
std::ostream& operator<<(std::ostream& os, const WCHAR* wstr);
std::ostream& operator<<(std::ostream& os, const DEVMODEA& dm);
std::ostream& operator<<(std::ostream& os, const DEVMODEW& dm);
std::ostream& operator<<(std::ostream& os, const RECT& rect);
std::ostream& operator<<(std::ostream& os, HDC__& dc);
std::ostream& operator<<(std::ostream& os, HWND__& hwnd);

3
DDrawCompat/DllMain.cpp
View File

@ -9,6 +9,7 @@
#include "CompatDirectDraw.h"
#include "CompatDirectDrawSurface.h"
#include "CompatDirectDrawPalette.h"
#include "CompatDisplayMode.h"
#include "CompatFontSmoothing.h"
#include "CompatGdi.h"
#include "CompatHooks.h"
@ -199,6 +200,8 @@ BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID /*lpvReserved*/)
SetProcessPriorityBoost(GetCurrentProcess(), disablePriorityBoost);
SetProcessAffinityMask(GetCurrentProcess(), 1);
SetThemeAppProperties(0);
CompatDisplayMode::installHooks();
CompatFontSmoothing::g_origSystemSettings = CompatFontSmoothing::getSystemSettings();
CompatHooks::installHooks();
Time::init();