iPad视网膜图像 - 为什么使用两种不同的图像尺寸？
[英]iPad retina images - Why use two different image sizes?
问题描述
For iPad Retina (or iPhone Retina as well), why do we need to have two types of image sizes and add a suffix like @2x for the retina version? 
对于iPad Retina（或iPhone Retina），为什么我们需要有两种类型的图像尺寸并为视网膜版本添加@ 2x这样的后缀？
Can't we just have one type of retina resolution images and for devices that do not have retina display, let the device handle resizing the image to smaller (non-retina) size? 我们不能只有一种类型的视网膜分辨率图像，对于没有视网膜显示的设备，让设备处理图像尺寸调整为更小（非视网膜）尺寸？
1 个解决方案
解决方案1
4 已采纳 2012-09-23 02:44:43
Resizing takes time and memory. 调整大小需要时间和内存。 And resizing while retaining sharpness is hard to do. 在保持清晰度的同时调整大小很难。 Which algorithm do you use? 你使用哪种算法？ Bicubic or bilinear? 双立方或双线性？ "But this icon looks better when resized with other-algorithm-here !" “但是当使用其他算法调整大小时，此图标看起来更好！” How is iOS meant to know that the 1px border you drew is still meant to be a 1px border at half the resolution? iOS是如何知道您绘制的1px边框仍然是一半分辨率的1px边框？
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