From 43c44eccdc56c50e41e8efbe5f7a34b57eed756f Mon Sep 17 00:00:00 2001
From: Young Hahn <young@mapbox.com>
Date: Tue, 2 Feb 2016 04:29:27 -0500
Subject: Allow using tileSize: 512 as a switch to trade retina support for
 512px raster tiles

---
 src/mbgl/util/mapbox.cpp | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'src/mbgl/util/mapbox.cpp')

diff --git a/src/mbgl/util/mapbox.cpp b/src/mbgl/util/mapbox.cpp
index 93b2b8521c..7ee0f279b6 100644
--- a/src/mbgl/util/mapbox.cpp
+++ b/src/mbgl/util/mapbox.cpp
@@ -119,7 +119,7 @@ std::string normalizeTileURL(const std::string& url, const std::string& accessTo
     return baseURL + "v4/" + url.substr(sizeof("mapbox://tiles/") - 1) + "?access_token=" + accessToken;
 }
 
-std::string canonicalizeTileURL(const std::string& url, SourceType type) {
+std::string canonicalizeTileURL(const std::string& url, SourceType type, uint16_t tileSize) {
     auto tilesetStartIdx = url.find("/v4/");
     if (tilesetStartIdx == std::string::npos) {
         return url;
@@ -159,8 +159,14 @@ std::string canonicalizeTileURL(const std::string& url, SourceType type) {
     }
 #endif // !defined(__ANDROID__) && !defined(__APPLE__)
 
-    return "mapbox://tiles/" + tileset + "/{z}/{x}/{y}" +
-        (type == SourceType::Raster ? "{ratio}" : "") + "." + extension;
+    std::string result = "mapbox://tiles/" + tileset + "/{z}/{x}/{y}";
+
+    if (type == SourceType::Raster) {
+        result += tileSize == 512 ? "@2x" : "{ratio}";
+    }
+
+    result += "." + extension;
+    return result;
 }
 
 } // end namespace mapbox
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