From 97f6271412599659eb0900551d229acb5e73e245 Mon Sep 17 00:00:00 2001
From: Stephen Anthony <sa666666@gmail.com>
Date: Tue, 26 May 2020 14:55:40 -0230
Subject: [PATCH] Add support for loading grayscale PNG.  Fixes #644. If I'd
 known it would be that easy, I'd have done it long ago.

---
 Changes.txt               | 2 ++
 src/common/PNGLibrary.cxx | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/Changes.txt b/Changes.txt
index 3d7a18ef4..df70e30c0 100644
--- a/Changes.txt
+++ b/Changes.txt
@@ -57,6 +57,8 @@
 
   * Removed unused CV+ and DASH bank switching types.
 
+  * Added support for loading grayscale PNG images in the ROM launcher.
+
 -Have fun!
 
 
diff --git a/src/common/PNGLibrary.cxx b/src/common/PNGLibrary.cxx
index e1980a975..23dd798d6 100644
--- a/src/common/PNGLibrary.cxx
+++ b/src/common/PNGLibrary.cxx
@@ -89,7 +89,7 @@ void PNGLibrary::loadImage(const string& filename, FBSurface& surface)
   }
   else if(color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
   {
-    loadImageERROR("Greyscale PNG images not supported");
+    png_set_gray_to_rgb(png_ptr);
   }
   else if(color_type == PNG_COLOR_TYPE_PALETTE)
   {