andrelip
Perhaps in your specific example, everything happens exactly as you wrote.
Since I don't know what exactly "PLAT" measures 0.370 ms.
But you can find out in which mode the application is running through the PresentMon64-1.3.1 program.
A full description is available at
https://github.com/GameTechDev/PresentMon.
In short.
For example, battlefield 1 wddm 2.1.
Game bf1 on a separate line. Hardware: Legacy Flip = Indicates the app took ownership of the screen, and is swapping the displayed surface every frame.
- fse.jpg (86.96 KiB) Viewed 5070 times
Game bf1 on a separate line. Composed: Copy with GPU GDI = Indicates the app is windowed, and is copying contents into a surface that's shared with GDI.
- windowed.jpg (38.82 KiB) Viewed 5070 times
It looks like this without "DWM composed".
- killdwm.jpg (4.56 KiB) Viewed 5070 times
Later versions of wddm have more modes.
I often do not clearly state my thoughts. google translate is far from perfect. And in addition to the translator, I myself am mistaken. Do not take me seriously.