Rebuild SDL2 (5dc13016cf) with USE_D3D9EX

app/streaming/video/ffmpeg-renderers/sdlvid.cpp

@@ -168,6 +168,15 @@ bool SdlRenderer::initialize(SDL_Window* window,
         return false;
     }
 
+#ifdef Q_OS_WIN32
+    // For some reason, using Direct3D9Ex breaks this with multi-monitor setups.
+    // When focus is lost, the window is minimized then immediately restored without
+    // input focus. This glitches out the renderer and a bunch of other stuff.
+    // Direct3D9Ex itself seems to have this minimize on focus loss behavior on its
+    // own, so just disable SDL's handling of the focus loss event.
+    SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0");
+#endif
+
     return true;
 }