From 78c009f7e3412ba5a3f3fd20f159980601deb205 Mon Sep 17 00:00:00 2001
From: Valeriy Mironov <valeronm@gmail.com>
Date: Sun, 26 Nov 2017 10:33:27 +0200
Subject: [PATCH] Fixed packing images with only one color

---
 Resources/ImageWriter.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Resources/ImageWriter.cs b/Resources/ImageWriter.cs
index d17301b..66f351c 100644
--- a/Resources/ImageWriter.cs
+++ b/Resources/ImageWriter.cs
@@ -40,8 +40,8 @@ namespace Resources
 
             _paletteColors = (ushort) _palette.Count;
             _bitsPerPixel = (ushort) Math.Ceiling(Math.Log(_paletteColors, 2));
-            if (_bitsPerPixel == 3)
-                _bitsPerPixel = 4;
+            if (_bitsPerPixel == 3) _bitsPerPixel = 4;
+            if (_bitsPerPixel == 0) _bitsPerPixel = 1;
 
             if (_bitsPerPixel != 1 && _bitsPerPixel != 2 && _bitsPerPixel != 4)
                 throw new ArgumentException($"{0} bits per pixel doesn't supported.");