Check return value of wlr_renderer_begin()

Since [1], wlr_renderer_begin() can fail. Check its return value
and bail.

This fixes an assertion error (when begin() fails and then we try
to render something) after a GPU reset.

[1]: https://gitlab.freedesktop.org/wlroots/wlroots/-/commit/a541c9510a4cf544313bc9b0503d75820b42444e

1 files changed, 3 insertions, 1 deletions

diff --git a/sway/desktop/render.c b/sway/desktop/render.c
index 4d242bd7..2b7214c3 100644
--- a/sway/desktop/render.c
+++ b/sway/desktop/render.c
@@ -1044,7 +1044,9 @@ void output_render(struct sway_output *output, struct timespec *when,
                 fullscreen_con = workspace->current.fullscreen;
         }
 
-        wlr_renderer_begin(renderer, wlr_output->width, wlr_output->height);
+        if (!wlr_renderer_begin(renderer, wlr_output->width, wlr_output->height)) {
+                return;
+        }
 
         if (debug.damage == DAMAGE_RERENDER) {
                 int width, height;