From 7aeae444a9fac9a9ab082a082d8201a09a03b287 Mon Sep 17 00:00:00 2001
From: Thomas Friedel <tomee6@gmail.com>
Date: Sat, 26 Jan 2019 23:02:02 +0100
Subject: [PATCH] fixed a rect clipping bug

---
 paths.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/paths.go b/paths.go
index f47ca62..bf5c75c 100644
--- a/paths.go
+++ b/paths.go
@@ -568,6 +568,10 @@ func (cv *Canvas) scissor(path []pathPoint) {
 		br[1] = math.Min(br[1], cv.state.scissor.br[1])
 	}
 
+	if tl[0] >= br[0] || tl[1] >= br[1] {
+		tl, br = vec{}, vec{}
+	}
+
 	cv.state.scissor = scissor{tl: tl, br: br, on: true}
 	cv.applyScissor()
 }