types/wlr_screencopy_v1.c

@@ -48,9 +48,19 @@ static void screencopy_damage_accumulate(struct screencopy_damage *damage) {
 		return;
 	}
 
-	pixman_region32_union(region, region, &output->pending.damage);
-	pixman_region32_intersect_rect(region, region, 0, 0, output->width,
-		output->height);
+	int width, height;
+	wlr_output_transformed_resolution(output, &width, &height);
+
+	if (output->pending.committed & WLR_OUTPUT_STATE_DAMAGE) {
+		// If the compositor submitted damage, copy it over
+		pixman_region32_union(region, region, &output->pending.damage);
+		pixman_region32_intersect_rect(region, region, 0, 0, width, height);
+	} else if (output->pending.committed & WLR_OUTPUT_STATE_BUFFER) {
+		// If the compositor did not submit damage but did submit a buffer
+		// damage everything
+		pixman_region32_union_rect(region, region, 0, 0, width, height);
+	}
+
 	damage->last_commit_seq = output->commit_seq;
 }