From eb15b4e962dc388fae85f89915604a219ca65288 Mon Sep 17 00:00:00 2001
From: Ethan Lee <[EMAIL REDACTED]>
Date: Fri, 11 Jun 2021 23:40:09 -0400
Subject: [PATCH] wayland: Drop SwapWindow calls for hidden windows
---
src/video/wayland/SDL_waylandopengles.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/video/wayland/SDL_waylandopengles.c b/src/video/wayland/SDL_waylandopengles.c
index e4739a8a6..7b33223e3 100644
--- a/src/video/wayland/SDL_waylandopengles.c
+++ b/src/video/wayland/SDL_waylandopengles.c
@@ -114,6 +114,18 @@ Wayland_GLES_SwapWindow(_THIS, SDL_Window *window)
SDL_WindowData *data = (SDL_WindowData *) window->driverdata;
const int swap_interval = _this->egl_data->egl_swapinterval;
+ /* For windows that we know are hidden, skip swaps entirely, if we don't do
+ * this compositors will intentionally stall us indefinitely and there's no
+ * way for an end user to show the window, unlike other situations (i.e.
+ * the window is minimized, behind another window, etc.).
+ *
+ * FIXME: Request EGL_WAYLAND_swap_buffers_with_timeout.
+ * -flibit
+ */
+ if (window->flags & SDL_WINDOW_HIDDEN) {
+ return 0;
+ }
+
/* Control swap interval ourselves. See comments on Wayland_GLES_SetSwapInterval */
if (swap_interval != 0) {
struct wl_display *display = ((SDL_VideoData *)_this->driverdata)->display;