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Fix excessive flickering when switching between full-screen and windowed on Windows

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This commit is contained in:
Cameron Gutman
2022-08-28 20:10:26 -05:00
parent 3e330b7929
commit 9ab4479fcf
1 changed files with 14 additions and 1 deletions
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app/streaming/session.cpp
+14 -1
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@@ -1068,6 +1068,17 @@ void Session::toggleFullscreen()
{ {
bool fullScreen = !(SDL_GetWindowFlags(m_Window) & m_FullScreenFlag); bool fullScreen = !(SDL_GetWindowFlags(m_Window) & m_FullScreenFlag);
#ifdef Q_OS_WIN32
// Destroy the video decoder before toggling full-screen because D3D9 can try
// to put the window back into full-screen before we've managed to destroy
// the renderer. This leads to excessive flickering and can cause the window
// decorations to get messed up as SDL and D3D9 fight over the window style.
SDL_AtomicLock(&m_DecoderLock);
delete m_VideoDecoder;
m_VideoDecoder = nullptr;
SDL_AtomicUnlock(&m_DecoderLock);
#endif
if (fullScreen) { if (fullScreen) {
SDL_SetWindowResizable(m_Window, SDL_FALSE); SDL_SetWindowResizable(m_Window, SDL_FALSE);
SDL_SetWindowFullscreen(m_Window, m_FullScreenFlag); SDL_SetWindowFullscreen(m_Window, m_FullScreenFlag);
@@ -1543,7 +1554,9 @@ void Session::execInternal()
case SDL_USEREVENT: case SDL_USEREVENT:
switch (event.user.code) { switch (event.user.code) {
case SDL_CODE_FRAME_READY: case SDL_CODE_FRAME_READY:
m_VideoDecoder->renderFrameOnMainThread(); if (m_VideoDecoder != nullptr) {
m_VideoDecoder->renderFrameOnMainThread();
}
break; break;
case SDL_CODE_HIDE_CURSOR: case SDL_CODE_HIDE_CURSOR:
SDL_ShowCursor(SDL_DISABLE); SDL_ShowCursor(SDL_DISABLE);