From 6d5d88f01ed467cb576d2e7bc94708ad5d212f0f Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Mon, 25 Jul 2016 00:51:24 +0000
Subject: [PATCH] Fix off-by-one bug in Pixmap::WritePng.

---
 src/resource.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/resource.cpp b/src/resource.cpp
index 4bd8903..b5be272 100644
--- a/src/resource.cpp
+++ b/src/resource.cpp
@@ -186,7 +186,7 @@ bool Pixmap::WritePng(FILE *f, bool flip) {
         if(flip) {
             rows.push_back(&data[stride * y]);
         } else {
-            rows.push_back(&data[stride * (height - y)]);
+            rows.push_back(&data[stride * (height - y - 1)]);
         }
     }