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[dxgi] Synchronize presentation to enforce maximum frame latency

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Some games may rely on the maximum number of frames in flight.
Might fix a related issue in Hard Reset (#503) and Okami HD (#283).
This commit is contained in:
Philip Rebohle 2018-07-20 11:40:37 +02:00
parent fd55520301
commit adcc7a4573
No known key found for this signature in database
GPG Key ID: C8CC613427A31C99
3 changed files with 15 additions and 4 deletions
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13
src/dxgi/dxgi_presenter.cpp
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@ -121,10 +121,14 @@ namespace dxvk {
}
void DxgiVkPresenter::PresentImage(UINT SyncInterval) {
void DxgiVkPresenter::PresentImage(UINT SyncInterval, const Rc<DxvkEvent>& SyncEvent) {
if (m_hud != nullptr)
m_hud->update();
// Wait for frame event to be signaled. This is used
// to enforce the device's frame latency requirement.
SyncEvent->wait();
// Check whether the back buffer size is the same
// as the window size, in which case we should use
// VK_FILTER_NEAREST to avoid blurry output
@ -198,6 +202,13 @@ namespace dxvk {
if (m_hud != nullptr)
m_hud->render(m_context, m_options.preferredBufferSize);
if (i == SyncInterval - 1) {
DxvkEventRevision eventRev;
eventRev.event = SyncEvent;
eventRev.revision = SyncEvent->reset();
m_context->signalEvent(eventRev);
}
m_device->submitCommandList(
m_context->endRecording(),
swapSemas.acquireSync,

2
src/dxgi/dxgi_presenter.h
View File

@ -84,7 +84,7 @@ namespace dxvk {
* \brief Renders back buffer to the screen
* \param [in] SyncInterval Vsync interval
*/
void PresentImage(UINT SyncInterval);
void PresentImage(UINT SyncInterval, const Rc<DxvkEvent>& SyncEvent);
/**
* \brief Sets new back buffer

4
src/dxgi/dxgi_swapchain.cpp
View File

@ -307,7 +307,7 @@ namespace dxvk {
// Submit pending rendering commands
// before recording the present code.
m_presentDevice->FlushRenderingCommands();
// Update swap chain properties. This will not only set
// up vertical synchronization properly, but also apply
// changes that were made to the window size even if the
@ -317,7 +317,7 @@ namespace dxvk {
: VK_PRESENT_MODE_FIFO_KHR;
m_presenter->RecreateSwapchain(m_desc.Format, presentMode, GetWindowSize());
m_presenter->PresentImage(SyncInterval);
m_presenter->PresentImage(SyncInterval, m_device->GetFrameSyncEvent());
return S_OK;
} catch (const DxvkError& err) {
Logger::err(err.message());