Unity ARKit XR 插件 – 人脸追踪

Question

I am facing a problem after exporting the project. I do not know what the reason is, but my mobile phone becomes hot after a few minutes.

The project is new and does not have any script, just add ARKit XR Plugin.

Answer 1

That's quite "normal thermal condition" for any device running Augmented Reality app. ARKit, RealityKit, ARCore, Vuforia or MRTK's tracking tasks are as CPU/GPU intensive as they should be. That's because these frameworks not only track surrounding environment at 60 fps but also render 3D geometry with PBR shaders, textures, shadows and animation at identical frame rate.

Face tracking is even more CPU-intensive, in some cases, than World tracking . That's because except RGB channels coming from selfie camera, you're operating with segmented Alpha channel and Depth channel, coming from TrueDepth sensor in real time. And there are 52 facial blendshapes deforming geometry at rate 1/60 of a second.

Pay attention to the fact that native Xcode builds of ARKit apps written in Swift work faster (in UIKit or in SwiftUI) than Unity builds of ARKit apps.