From 994f4977810749c0b597e7a7531a02d907967a68 Mon Sep 17 00:00:00 2001 From: comex Date: Sun, 22 Nov 2020 16:05:18 -0500 Subject: Overhaul EmuWindow::PollEvents to fix yuzu-cmd calling SDL_PollEvents off main thread EmuWindow::PollEvents was called from the GPU thread (or the CPU thread in sync-GPU mode) when swapping buffers. It had three implementations: - In GRenderWindow, it didn't actually poll events, just set a flag and emit a signal to indicate that a frame was displayed. - In EmuWindow_SDL2_Hide, it did nothing. - In EmuWindow_SDL2, it did call SDL_PollEvents, but this is wrong because SDL_PollEvents is supposed to be called on the thread that set up video - in this case, the main thread, which was sleeping in a busyloop (regardless of whether sync-GPU was enabled). On macOS this causes a crash. To fix this: - Rename EmuWindow::PollEvents to OnFrameDisplayed, and give it a default implementation that does nothing. - In EmuWindow_SDL2, do not override OnFrameDisplayed, but instead have the main thread call SDL_WaitEvent in a loop. --- src/yuzu/bootmanager.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/yuzu/bootmanager.cpp') diff --git a/src/yuzu/bootmanager.cpp b/src/yuzu/bootmanager.cpp index d62b0efc2..8b490c109 100644 --- a/src/yuzu/bootmanager.cpp +++ b/src/yuzu/bootmanager.cpp @@ -308,7 +308,7 @@ GRenderWindow::~GRenderWindow() { input_subsystem->Shutdown(); } -void GRenderWindow::PollEvents() { +void GRenderWindow::OnFrameDisplayed() { if (!first_frame) { first_frame = true; emit FirstFrameDisplayed(); -- cgit v1.2.3