From 4d402c5ef14402ff0e6727f51f87539e567133dd Mon Sep 17 00:00:00 2001
From: Jiri Drbalek <jiri.drbalek@firma.seznam.cz>
Date: Fri, 4 Mar 2016 10:58:12 +0000
Subject: [PATCH] raster scaling: fix accessing out of bounds pixels

---
 include/mapnik/span_image_filter.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/mapnik/span_image_filter.hpp b/include/mapnik/span_image_filter.hpp
index 972558ccf..8559394fa 100644
--- a/include/mapnik/span_image_filter.hpp
+++ b/include/mapnik/span_image_filter.hpp
@@ -81,7 +81,7 @@ public:
 
             int src_x = x >> agg::image_subpixel_shift;
             int src_y = y >> agg::image_subpixel_shift;
-            const value_type* pix = reinterpret_cast<const value_type*>(base_type::source().span(src_x, src_y, 0));
+            const value_type* pix = reinterpret_cast<const value_type*>(base_type::source().span(src_x, src_y, 1));
             if (nodata_value_ && *nodata_value_ == *pix)
             {
                 span->v = *nodata_value_;