1.用软件制作一张正方形的图,比如1200x1200 px; 在屏幕上100%显示,然后找个尺子在屏幕上量一下,看看差多少。(应该是一样才对)
2.然后找到你的显示器的native resolution,可以google "显示器型号+native resolution".
3. r-click on you desktop and choose Properties, Settings, and adjust Screen resolution. If your native resolution is not listed, try update your video card driver.