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Aligned usage of flip between compat and real primary surface chains

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Using flip for direct front buffer updates can cause performance problems
if the driver forces vertical sync and overrides the DDFLIP_NOVSYNC flag.

On the other hand, DDFLIP_NOVSYNC flip requests on the compat primary
surface should be handled via real flip to allow vertical sync override.
This commit is contained in:
narzoul 2016-04-03 15:13:38 +02:00
parent be67dff295
commit c78c7c927f
1 changed files with 9 additions and 18 deletions
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27
DDrawCompat/RealPrimarySurface.cpp
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@ -64,6 +64,14 @@ namespace
CompatPaletteConverter::unlockDc();
CompatPaletteConverter::unlockSurface();
if (dest == g_frontBuffer)
{
// Force the screen to be updated. It won't refresh from BitBlt alone.
RECT r = { 0, 0, 1, 1 };
CompatDirectDrawSurface<IDirectDrawSurface7>::s_origVtable.BltFast(
g_frontBuffer, 0, 0, g_frontBuffer, &r, DDBLTFAST_WAIT);
}
}
else
{
@ -99,18 +107,7 @@ namespace
void updateNow()
{
QueryPerformanceCounter(&g_lastUpdateTime);
if (g_backBuffer)
{
if (compatBlt(g_backBuffer))
{
g_frontBuffer->lpVtbl->Flip(g_frontBuffer, nullptr, DDFLIP_NOVSYNC | DDFLIP_WAIT);
}
}
else
{
compatBlt(g_frontBuffer);
}
compatBlt(g_frontBuffer);
}
DWORD WINAPI updateThreadProc(LPVOID /*lpParameter*/)
@ -235,12 +232,6 @@ HRESULT RealPrimarySurface::flip(DWORD flags)
return DDERR_NOTFLIPPABLE;
}
if (flags & DDFLIP_NOVSYNC)
{
update();
return DD_OK;
}
compatBlt(g_backBuffer);
if (flags & DDFLIP_DONOTWAIT)
{