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Cxbx-Reloaded
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Only Update FPS counter & cap framerate in actual SWAP_PRESENT calls

This commit is contained in:
Luke Usher 2018-04-06 23:37:20 +01:00
parent c4c1df2f20
commit e0eeb142ca
1 changed files with 16 additions and 16 deletions
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32
src/CxbxKrnl/EmuD3D8.cpp
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@ -3971,25 +3971,25 @@ DWORD WINAPI XTL::EMUPATCH(D3DDevice_Swap)
HRESULT hRet = g_pD3DDevice8->Present(0, 0, 0, 0);
DEBUG_D3DRESULT(hRet, "g_pD3DDevice8->Present");
hRet = g_pD3DDevice8->BeginScene();
if (!g_UncapFramerate) {
// If the last frame completed faster than the Xbox VBlank period, wait for it
// TODO: Read the frame rate target from the Xbox display mode
// See comments in GetNextVblankTime();
auto targetDuration = 16.6666666667ms;
while (std::chrono::high_resolution_clock::now() - frameStartTime < targetDuration) {
// We use an empty while loop because actually sleeping is too unstable
// Sleeping causes the frame duration to jitter...
;
}
frameStartTime = std::chrono::high_resolution_clock::now();
}
UpdateFPSCounter();
if (Flags == CXBX_SWAP_PRESENT_FORWARD) // Only do this when forwarded from Present
{
if (!g_UncapFramerate) {
// If the last frame completed faster than the Xbox VBlank period, wait for it
// TODO: Read the frame rate target from the Xbox display mode
// See comments in GetNextVblankTime();
auto targetDuration = 16.6666666667ms;
while (std::chrono::high_resolution_clock::now() - frameStartTime < targetDuration) {
// We use an empty while loop because actually sleeping is too unstable
// Sleeping causes the frame duration to jitter...
;
}
frameStartTime = std::chrono::high_resolution_clock::now();
}
UpdateFPSCounter();
// Put primitives per frame in the title
/*{
char szString[64];