开启hidpi模式
sudo defaults write /Library/Preferences/com.apple.windowserver.plist DisplayResolutionEnabled -bool true
检测您的显示器
ioreg -lw0 | grep IODisplayPrefsKey
得到输出的结果
"IODisplayPrefsKey" = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebuffer@0/display0/AppleBacklightDisplay-610-a019" "IODisplayPrefsKey" = "IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/IGPU@2/AppleIntelFramebuffer@2/display0/AppleDisplay-10ac-d06e"
生成文件
第二行的10ac 和 d06e为16进制的数值，对应文件名：
/System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-10ac/DisplayProductID-d06e
并转化成10进制数字填入下面xml中
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>DisplayProductName</key> <string>DELL U2515H</string> <key>DisplayProductID</key> <integer>53358</integer> <key>DisplayVendorID</key> <integer>4268</integer> <key>scale-resolutions</key> <array> <data>AAAKAAAABaAAAAABACAAAA==</data& 大专栏 黑苹果gt; <data>AAAFAAAAAtAAAAABACAAAA==</data> <data>AAAPAAAACHAAAAABACAAAA==</data> <data>AAAHgAAABDgAAAABACAAAA==</data> <data>AAAMgAAABwgAAAABACAAAA==</data> <data>AAAGQAAAA4QAAAABACAAAA==</data> <data>AAAKAgAABaAAAAABACAAAA==</data> <data>AAAKrAAABgAAAAABACAAAA==</data> <data>AAAFVgAAAwAAAAABACAAAA==</data> </array> </dict> </plist>
然后把文件拷贝到该目录：
/System/Library/Displays/Contents/Resources/Overrides/DisplayVendorID-`10ac`/DisplayProductID-`d06e`
重新启动Mac
重启即可切换设置的分辨率，如果设置中没有找到对应的分辨率，可以使用工具RDM来切换
参考文章：
https://github.com/xzhih/one-key-hidpi/blob/master/README-zh.md
https://www.tonymacx86.com/threads/adding-using-hidpi-custom-resolutions.133254/
https://comsysto.github.io/Display-Override-PropertyList-File-Parser-and-Generator-with-HiDPI-Support-For-Scaled-Resolutions/
https://zhuanlan.zhihu.com/p/36913571
https://bbs.feng.com/read-htm-tid-11677019.html