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Properly handle multiple window event flush barriers in flight at once

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Fixes streaming on macOS Mojave without Metal support
This commit is contained in:
Cameron Gutman 2021-01-14 19:28:21 -06:00
parent 89e9652075
commit 7172cfd889
2 changed files with 10 additions and 5 deletions
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13
app/streaming/session.cpp
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@ -380,7 +380,7 @@ Session::Session(NvComputer* computer, NvApp& app, StreamingPreferences *prefere
m_InputHandler(nullptr),
m_InputHandlerLock(0),
m_MouseEmulationRefCount(0),
m_FlushingWindowEvents(false),
m_FlushingWindowEventsRef(0),
m_AsyncConnectionSuccess(false),
m_PortTestResults(0),
m_OpusDecoder(nullptr),
@ -1113,7 +1113,7 @@ void Session::flushWindowEvents()
// Insert a barrier to discard any additional window events.
// We don't use SDL_FlushEvent() here because it could cause
// important events to be lost.
m_FlushingWindowEvents = true;
m_FlushingWindowEventsRef++;
// This event will cause us to set m_FlushingWindowEvents back to false.
SDL_Event flushEvent = {};
@ -1343,7 +1343,7 @@ void Session::exec(int displayOriginX, int displayOriginY)
SDL_ShowCursor(SDL_ENABLE);
break;
case SDL_CODE_FLUSH_WINDOW_EVENT_BARRIER:
m_FlushingWindowEvents = false;
m_FlushingWindowEventsRef--;
break;
default:
SDL_assert(false);
@ -1401,8 +1401,13 @@ void Session::exec(int displayOriginX, int displayOriginY)
SDL_SetWindowPosition(m_Window, x, y);
}
if (m_FlushingWindowEvents) {
if (m_FlushingWindowEventsRef > 0) {
// Ignore window events for renderer reset if flushing
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Dropping window event during flush: %d (%d %d)",
event.window.event,
event.window.data1,
event.window.data2);
break;
}

2
app/streaming/session.h
View File

@ -152,7 +152,7 @@ private:
SdlInputHandler* m_InputHandler;
SDL_SpinLock m_InputHandlerLock;
int m_MouseEmulationRefCount;
bool m_FlushingWindowEvents;
int m_FlushingWindowEventsRef;
bool m_AsyncConnectionSuccess;
int m_PortTestResults;