问题
I build the SheepShaver emulator (which, in its current version, uses SDL2 to create and display its window) for use in macOS. When I build under Xcode 9, the fonts and graphics are sharp and clear; when I build under Xcode 10 (on the same MacBook Pro running Mojave), the fonts and graphics are slightly fuzzy. I use exactly the same code when building on both Xcode versions.
Is there a setting in Xcode 10 that will produce the same visual output that Xcode 9 produces? I've already got the Xcode 10 code using the Legacy Build System, because SheepShaver won't build under the new build system in Xcode 10. But I can't guess what other setting might affect this.
来源：https://stackoverflow.com/questions/54348868/get-same-graphic-output-under-xcode-10-as-under-xcode-9