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bestswifter · bestswifter · commit cbb800991923 · 2016-02-27T23:25:32.000+08:00
diff --git a/CornerRadius/CornerRadius/Assets.xcassets/photo.imageset/Contents.json b/CornerRadius/CornerRadius/Assets.xcassets/photo.imageset/Contents.json
@@ -0,0 +1,21 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "photo.png",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "universal",
+      "scale" : "3x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}
diff --git a/CornerRadius/CornerRadius/Assets.xcassets/photo.imageset/photo.png b/CornerRadius/CornerRadius/Assets.xcassets/photo.imageset/photo.png
diff --git a/CornerRadius/CornerRadius/CustomTableViewCell.swift b/CornerRadius/CornerRadius/CustomTableViewCell.swift
@@ -49,7 +49,7 @@ class CustomTableViewCell: UITableViewCell {
         imgView1.image = UIImage(named: imgName)
         imgView2.image = UIImage(named: imgName)
         imgView3.image = UIImage(named: imgName)
-        imgView4.image = UIImage(named: imgName)
+        imgView4.image = UIImage(named: "photo")
     }
 
     override func setSelected(selected: Bool, animated: Bool) {
diff --git a/CornerRadius/README.md b/CornerRadius/README.md
@@ -1,5 +1,7 @@
 # CornerRadius
 
+参考了这篇文章：[小心别让圆角成了你列表的帧数杀手](http://www.cocoachina.com/ios/20150803/12873.html)
+
 都说 `cornerRadius` + `masksToBounds` 会导致离屏渲染，从而大幅度降低 `UITabelView` 滑动时的性能。
 
-我做了一个 demo，在 cell 中放了四个 UIImageView，但是在 Instument 中检测时并没有发现离屏渲染，滑动时帧数也未见下降。
+我做了一个 demo，在 cell 中放了四个 UIImageView，令我惊讶的是，使用不同的图片可能会导致不同的结果。有些图片设置圆角会导致离屏渲染，有些则不会。即使四个图片都导致了离屏渲染，也并没有看到滑动时帧数的下降。

Original file line number	Diff line number	Diff line change
`@@ -49,7 +49,7 @@ class CustomTableViewCell: UITableViewCell {`
`49`	`49`	`imgView1.image = UIImage(named: imgName)`
`50`	`50`	`imgView2.image = UIImage(named: imgName)`
`51`	`51`	`imgView3.image = UIImage(named: imgName)`
`52`		`- imgView4.image = UIImage(named: imgName)`
	`52`	`+ imgView4.image = UIImage(named: "photo")`
`53`	`53`	`}`
`54`	`54`
`55`	`55`	`override func setSelected(selected: Bool, animated: Bool) {`