From 3e2be025b3b107da0ffc36ec6fc64529228f93dc Mon Sep 17 00:00:00 2001
From: Timon Ringwald <timon.ringwald@mequen.de>
Date: Sat, 2 Apr 2022 17:33:52 +0200
Subject: [PATCH] added support for zero-sized buffers

---
 buffer.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/buffer.go b/buffer.go
index 80fe593..5c62467 100644
--- a/buffer.go
+++ b/buffer.go
@@ -102,8 +102,8 @@ func (b *Buffer[T]) Sub(x, y, w, h int) *Buffer[T] {
 	// sanitize inputs
 	x = limit(x, 0, b.width-1)
 	y = limit(y, 0, b.height-1)
-	w = limit(w, 1, b.width-x)
-	h = limit(h, 1, b.height-y)
+	w = limit(w, 0, b.width-x)
+	h = limit(h, 0, b.height-y)
 
 	// make slice references
 	data := make([][]T, h)