From e89c58c7311b88853091d4f4dc3126e6ce41e7d7 Mon Sep 17 00:00:00 2001
From: columbarius <co1umbarius@protonmail.com>
Date: Mon, 19 Apr 2021 15:36:16 +0200
Subject: [PATCH] wlr_screencopy: make sure xdg_output_manager is supported

---
 src/screencast/wlr_screencast.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/screencast/wlr_screencast.c b/src/screencast/wlr_screencast.c
index a3b0637..90e90c7 100644
--- a/src/screencast/wlr_screencast.c
+++ b/src/screencast/wlr_screencast.c
@@ -634,6 +634,13 @@ int xdpw_wlr_screencopy_init(struct xdpw_state *state) {
 
 	logprint(DEBUG, "wayland: registry listeners run");
 
+	// make sure our wlroots supports xdg_output_manager
+	if (!ctx->xdg_output_manager) {
+		logprint(ERROR, "Compositor doesn't support %s!",
+			zxdg_output_manager_v1_interface.name);
+		return -1;
+	}
+
 	wlr_init_xdg_outputs(ctx);
 
 	wl_display_roundtrip(state->wl_display);