From 5e1f1c2b79002d923ca729bd12e2d1491139a87f Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Mon, 23 Sep 2013 19:45:10 -0700
Subject: [PATCH] avoid unneccesary projection copy

---
 include/mapnik/feature_style_processor_impl.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/mapnik/feature_style_processor_impl.hpp b/include/mapnik/feature_style_processor_impl.hpp
index 58dca7b13..2bd7fda97 100644
--- a/include/mapnik/feature_style_processor_impl.hpp
+++ b/include/mapnik/feature_style_processor_impl.hpp
@@ -130,8 +130,8 @@ struct has_process
 // Store material for layer rendering in a two step process
 struct layer_rendering_material {
         layer const& lay_;
-        projection     proj0_;
-        projection     proj1_;
+        projection const& proj0_;
+        projection proj1_;
         box2d<double> layer_ext2_;
         std::vector<feature_type_style const*> active_styles_;
         std::vector<featureset_ptr> featureset_ptr_list_;