From 563b23a33726289387193b85d90fb569631ee05f Mon Sep 17 00:00:00 2001 From: Berke Güzel Date: Tue, 13 Oct 2026 23:52:22 +0300 Subject: Reconnect to a restarted Wayland compositor Windows now outlive the compositor. On connection loss YASL sends DISPLAY_LOST instead of closing every window, retries the connection on a loop timer, rebuilds each toplevel with its title, size, state and GL context, and sends DISPLAY_RESTORED. CPU windows keep their pixels; GPU renderers drop Vulkan surfaces and GL objects on loss and rebuild them on restore. - Free the dead connection's objects on the next wait, after the application has released GPU objects built on them. - Report a lost connection as an event rather than a failed wait. - Refuse window and Vulkan surface creation while offline with the new YASL_ERROR_DISCONNECTED. - Close popups, cancel drags and fail pending clipboard requests on loss. - Print only protocol errors, not ordinary disconnects. - Examples survive a restart; game.c rebinds its GL context. - Add an end-to-end test that kills Weston under CPU, GL and Vulkan windows and requires them to recover. Co-Authored-By: Claude Opus 5.5 --- examples/game.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'examples/game.c') diff --git a/examples/game.c b/examples/game.c index 79beb7c..0be4461 100644 --- a/examples/game.c +++ b/examples/game.c @@ -29,15 +29,20 @@ int main(int argc, char **argv) } yasl_gl_swap_interval(s, 1); int result = 0, frames = 0; + bool online = true; for (bool running = true; running;) { + /* Drain events before each frame; while the display is gone, block until it returns. */ yasl_event e; - int n; - while ((n = yasl_wait_event(&e, 0)) > 0) { - if (e.type == YASL_EVENT_CLOSE || e.type == YASL_EVENT_QUIT || - (e.type == YASL_EVENT_KEY && e.key.key == YASL_KEY_ESCAPE)) running = false; - if (e.type == YASL_EVENT_DISPLAY_LOST) { result = 1; running = false; } - } + int n = yasl_wait_event(&e, online ? 0 : -1); if (n < 0) { result = 1; break; } + if (e.type == YASL_EVENT_CLOSE || e.type == YASL_EVENT_QUIT || + (e.type == YASL_EVENT_KEY && e.key.key == YASL_KEY_ESCAPE)) running = false; + if (e.type == YASL_EVENT_DISPLAY_LOST) online = false; + if (e.type == YASL_EVENT_DISPLAY_RESTORED) { + /* The context is new: bind it again and restore GL state here. */ + online = yasl_gl_make_current(s) && yasl_gl_swap_interval(s, 1); + } + if (n > 0 || !online || !running) continue; int w, h; yasl_surface_get_framebuffer_size(s, &w, &h); viewport(0, 0, w, h); -- cgit v1.2.3