From 5b4a2c9908f94b377591b4a9e49135c3137711a9 Mon Sep 17 00:00:00 2001
From: faiface <faiface@ksp.sk>
Date: Sat, 19 Aug 2017 16:05:42 +0200
Subject: win: fix flushing empty rect

---
 win/win.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/win/win.go b/win/win.go
index e47baf2..82637f1 100644
--- a/win/win.go
+++ b/win/win.go
@@ -148,6 +148,9 @@ func (w *Win) flush(r image.Rectangle) {
 
 	bounds := w.rgba.Bounds()
 	r = bounds.Intersect(r)
+	if r.Empty() {
+		return
+	}
 
 	tmp := image.NewRGBA(r)
 	draw.Draw(tmp, r, w.rgba, r.Min, draw.Src)
-- 
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