[Linux] Monitor Resolution, DPI, Scale Factor

[ffiirree]

Retrieve correct (Physical) Resolution, DPI, Scale Factor under Linux

• No scale
• scale
• Fractional scaling: Ubuntu The way 125% fractional scaling is implemented in Ubuntu is that it first renders everything at 200% and then scales the result down to 125%.

[ffiirree]

• Windows & Linux : 显示器分辨率和物理分辨率一致，缩放会改变工作(渲染)分辨率
• Linux - Fractional scaling : 渲染分辨率(先升) -> 显示器分辨率(后降) -> 物理分辨率均不同