From b71a8420ca4daff0c06f3b4b2c85d664d8af60c8 Mon Sep 17 00:00:00 2001
From: Yuxuan Shui <yshuiv7@gmail.com>
Date: Thu, 29 Sep 2022 07:59:25 +0100
Subject: [PATCH] options: add warning for using the egl backend

---
 src/options.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/options.c b/src/options.c
index 451bcf9..3186ddc 100644
--- a/src/options.c
+++ b/src/options.c
@@ -904,6 +904,15 @@ bool get_cfg(options_t *opt, int argc, char *const *argv, bool shadow_enable,
 		log_warn("--monitor-repaint has no effect when backend is not xrender");
 	}
 
+	if (opt->backend == BKEND_EGL) {
+		if (opt->legacy_backends) {
+			log_error("The egl backend is not supported with "
+			          "--legacy-backends");
+			return false;
+		}
+		log_warn("The egl backend is still experimental, use with care.");
+	}
+
 	if (!opt->legacy_backends && !backend_list[opt->backend]) {
 		log_error("Backend \"%s\" is only available as part of the legacy "
 		          "backends.",