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-rw-r--r--swaylock/render.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/swaylock/render.c b/swaylock/render.c
index cc40f4e9..05236dea 100644
--- a/swaylock/render.c
+++ b/swaylock/render.c
@@ -17,6 +17,9 @@ void render_frame(struct swaylock_surface *surface) {
int buffer_width = surface->width * surface->scale;
int buffer_height = surface->height * surface->scale;
+ if (buffer_width == 0 || buffer_height == 0) {
+ return; // not yet configured
+ }
surface->current_buffer = get_next_buffer(state->shm,
surface->buffers, buffer_width, buffer_height);