From 31ea61b390a3295248458ab7e8388848fb6810d0 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Sun, 13 Nov 2022 17:08:00 +0100
Subject: [PATCH] render: add wlr_renderer.events.lost

---
 include/wlr/render/wlr_renderer.h | 6 ++++++
 render/wlr_renderer.c             | 1 +
 2 files changed, 7 insertions(+)

diff --git a/include/wlr/render/wlr_renderer.h b/include/wlr/render/wlr_renderer.h
index 7d4e6720..c5c6be55 100644
--- a/include/wlr/render/wlr_renderer.h
+++ b/include/wlr/render/wlr_renderer.h
@@ -26,6 +26,12 @@ struct wlr_fbox;
 struct wlr_renderer {
 	struct {
 		struct wl_signal destroy;
+		/**
+		 * Emitted when the GPU is lost, e.g. on GPU reset.
+		 *
+		 * Compositors should destroy the renderer and re-create it.
+		 */
+		struct wl_signal lost;
 	} events;
 
 	// private state
diff --git a/render/wlr_renderer.c b/render/wlr_renderer.c
index b10b7513..7a18d95f 100644
--- a/render/wlr_renderer.c
+++ b/render/wlr_renderer.c
@@ -44,6 +44,7 @@ void wlr_renderer_init(struct wlr_renderer *renderer,
 	renderer->impl = impl;
 
 	wl_signal_init(&renderer->events.destroy);
+	wl_signal_init(&renderer->events.lost);
 }
 
 void wlr_renderer_destroy(struct wlr_renderer *r) {