From 4dfa161120308425877b350d6f8552b0d3d11c51 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Thu, 16 Feb 2023 17:49:18 +0200
Subject: [PATCH] Add dash and step size checks to draw_dashed_line.

---
 scene/main/canvas_item.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/scene/main/canvas_item.cpp b/scene/main/canvas_item.cpp
index e5dcdd2afd3..1c7d42ad360 100644
--- a/scene/main/canvas_item.cpp
+++ b/scene/main/canvas_item.cpp
@@ -515,12 +515,13 @@ void CanvasItem::draw_dashed_line(const Point2 &p_from, const Point2 &p_to, cons
 	ERR_FAIL_COND_MSG(!drawing, "Drawing is only allowed inside NOTIFICATION_DRAW, _draw() function or 'draw' signal.");
 
 	float length = (p_to - p_from).length();
-	if (length < p_dash) {
+	Vector2 step = p_dash * (p_to - p_from).normalized();
+
+	if (length < p_dash || step == Vector2() || p_dash <= 0.0) {
 		RenderingServer::get_singleton()->canvas_item_add_line(canvas_item, p_from, p_to, p_color, p_width);
 		return;
 	}
 
-	Vector2 step = p_dash * (p_to - p_from).normalized();
 	int steps = (p_aligned) ? Math::ceil(length / p_dash) : Math::floor(length / p_dash);
 	if (steps % 2 == 0) {
 		steps--;