Win10 official version of DPI scaling is how the font gradually becomes clear?

What is DPI technology? Before understanding the Win10 DPI technology, let's take a look at his definition, then look at how to use it in the official version of win10, and finally review the DPI scaling technology that has been adopted since Windows XP. Look at the win10 official version of DPI zoom technology and winxp What is the difference?

1. Traditional DPI scaling mechanism: The traditional DPI scaling mechanism is adopted by Windows XP. Developers can check whether there are potential problems after font scaling.

Advantages: Clear fonts

Disadvantages: typographical confusion (UI element text box overlap, table text overflow, interface beyond the edge of the screen)

Second, since you already know With the concept of DPI scaling technology, let's take a look at how the official version of win0 uses DPI scaling technology.

1. First, right click on the Win10 desktop and select “Display Settings">

2. In the “display settings” interface, click “ Advanced Display Settings”

3. In the “Advanced Display Settings” interface, click on the “Advanced Options for Text and Other Item Size Adjustments” below.

4, then, click “change the size of the item>; set the custom zoom level below";

5, here, select 100%, it means normal The zoom level. So, it’s good to change it to 100%, but remember to click “OK”, click on “Apply”,

6, then the computer will prompt you “You must log out of the computer” In order to apply these changes, click on “Immediately logout”, then re-enter Windows10, the fuzzy font on the program becomes clear.

Three, comparative analysis

Modern DPI scaling mechanism: DPI virtualization

The modern DPI scaling mechanism is adopted by Windows Vista/Win7/Win8/Win8.1 . If the DPI scaling does not exceed 125%, continue to use the traditional DPI scaling mechanism, and then turn it on after the new mode is turned on. It should be noted that the 125% zoom ratio does not cause serious interface errors in most cases, and the font is clear after scaling.

Specifically, for reporting programs that support DPI adaptation, the system will disable DPI scaling.

For programs that do not report support for DPI adaptation, the system will use the following mechanism:

If the scaling is 100% of the integer multiple, the system uses point-to-multipoint scaling. When the zoom ratio is selected to be 200%/300%/..., 1 point in the original interface corresponds to 4 points/9 points in order.

If the zoom ratio is not 100% of the integer multiple, the system first submits the virtual resolution to the application, and then the system off screen renders the software interface, and then zooms to the user selected DPI level.

With 1920*1080 resolution, the scaling ratio is 150%. The system first submits the current resolution to the application at 1280x720, obtains the off-screen rendering interface, and then uses the conventional image interpolation algorithm to zoom in. Need to be reminded that interpolation will inevitably lead to a series of problems such as blurred interfaces and font aliasing.

Advantages: normal interface

Disadvantages: interface blur

Win10 DPI scaling mechanism: full DPI virtualization

Win10 DPI scaling mechanism most parts Consistent with the modern DPI scaling mechanism, the only difference is that all DPI levels (including 125%) use DPI virtualization mechanism to ensure the interface is normal.

▲The Win10 DPI mechanism on the left and the Win8.1 DPI mechanism on the right.

The MAC micro-PI scaling mechanism is briefly introduced. The Retina screen adopts the 200% DPI zoom level. There is no difference in Windows. The only difference is that when displaying video and images, MAC OS X software uses 100% DPI in the video image area to ensure the quality of video and pictures.

But you will also encounter this situation. In Win10, after adjusting the DPI scaling, some system window fonts appear blurred. Then, you can use the following solution to help you solve the problem perfectly. Win10 high score Is the font blurred after the screen changes DPI? Try this gadget

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