diff --git a/libs/loader.js b/libs/loader.js
index 1b18f41e..b81c13a8 100644
--- a/libs/loader.js
+++ b/libs/loader.js
@@ -39,7 +39,13 @@ loader.prototype.load = function (callback) {
         core.loader.loadImages(images, core.material.images.images, function () {
             // 加载autotile
             core.material.images.autotile = {};
-            core.loader.loadImages(Object.keys(core.material.icons.autotile), core.material.images.autotile, function () {
+            var keys = Object.keys(core.material.icons.autotile);
+            var autotiles = {};
+            core.loader.loadImages(keys, autotiles, function () {
+
+                keys.forEach(function (v) {
+                    core.material.images.autotile[v] = autotiles[v];
+                });
                 
                 setTimeout(function () {
                     core.maps.makeAutotileEdges();
diff --git a/libs/maps.js b/libs/maps.js
index b0e40ce7..4ec0b3df 100644
--- a/libs/maps.js
+++ b/libs/maps.js
@@ -688,6 +688,10 @@ maps.prototype.makeAutotileEdges = function () {
 
     var canvas = document.createElement("canvas"), ctx = canvas.getContext('2d');
     canvas.width = canvas.height = 32;
+    ctx.mozImageSmoothingEnabled = false;
+    ctx.webkitImageSmoothingEnabled = false;
+    ctx.msImageSmoothingEnabled = false;
+    ctx.imageSmoothingEnabled = false;
 
     autotileIds.forEach(function (t) {
         var n = core.maps.getNumberById(t);