Performance Optimization - Animation Optimization Notes

Animation optimization:
There are two Animator-related functions in the UWA report: one is DirectorUpdateAnimationBegin, the other is DirectorUpdateAnimationEnd,
Generally speaking, we should pay attention to the stack of these two functions, through the stack functionThe number of calls and the proportion of time-consuming to further locate the cause

• ApplyOnAnimatorMove: Represents the number of activated animators and controls the number of Animators in Acitve

Cause: Whether the off-screen animator is activated The cache animator is active Too many animator components on the ui (simple ui effects can use dotween)

• Through the stack analysis of Animators.Update, ApplyBuiltinRootMotion

     Animation produces displacement If the animation does not require displacement, this option does not need to be turned on

• Enable Optimize Game Objects option

Unity will remove the level information of Transform when processing animation clips. This setting is very obvious for the time-consuming improvement of Animators.Update

• Control the trigger frequency of Animator.Initialize

It will be triggered when the GameObject containing the animator component is Acitve or Instantiate, which is time-consuming. When the cache pool hides the character, the GameObject is not directly hidden but the DisableAnimator component, and the GameObject is moved off-screen

• Animator's CullingMode mode AlwaysAnimate too many

With displacement animation changed to CullUpdateTransform without displacement animation changed to CullCompletely

It is recommended to use GPU Skinning + GPU Instancing for crowd animation rendering. It is recommended to turn off the native Gpu Skinning operation of the unity engine, which will cause extra overhead and cause invalid waiting for the main thread or rendering thread.
      https://lab.uwa4d.com/lab/5bc6f85504617c5805d4eb0a
https://lab.uwa4d.com/lab/5bc5511204617c5805d4e9cf

• AnimatorOverride can be used to optimize the memory of animations on the fly using dynamic loading of animations
• Optimize the animation accuracy, increase the Constant curve, and delete the scaling curve as needed
• FBX animation precision compression selection