Using fast pixels copy in putBinaryImageData

src/canvas.js

@@ -1281,12 +1281,14 @@ function checkPutBinaryImageDataCompatibility() {
       function CanvasGraphicsPutBinaryImageDataShim(ctx, imgData, w, h) {
         var tmpImgData = ctx.getImageData(0, 0, w, h);
 
-        // Copy over the imageData pixel by pixel.
         var tmpImgDataPixels = tmpImgData.data;
-        var len = tmpImgDataPixels.length;
-
-        while (len--) {
-          tmpImgDataPixels[len] = imgData.data[len];
+        var data = imgData.data;
+        if ('set' in tmpImgDataPixels)
+          tmpImgDataPixels.set(data);
+        else {
+          // Copy over the imageData pixel by pixel.
+          for (var i = 0, ii = tmpImgDataPixels.length; i < ii; i++)
+            tmpImgDataPixels[i] = data[i];
         }
 
         ctx.putImageData(tmpImgData, 0, 0);