Unity Optimization UNITY优化关注列表

Posted 2021-02-12 oplusx

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这里主要罗列Unity引擎进行开发的应用或游戏，可以进行优化的各个关注点。（此文会持续更新）

C# GC alloc
- Update LateUpdate
- Serialize
- String ToString() +=
- Getter API Object.name GetComponents Sprite.vectices
- Debug.Log
- Closure anonymous function
Unity API
- ParticleSystem Start Stop Pause Clear Simulate (withChildren = false)
- GetComponents Input.Touch (return copy) shall be cached
- Camera.main = Object.FindObjectWithTag("MainCamera")
- Physices.RaycastAll vs Rhysics.RaycastNonAlloc
UGUI
- Canvas Rebuild Mesh
- Batches
- Mask vs RectMask2D
- GraphicRaycaster - Raycast Target
- Layout Recursion SetDirty
- Canvas Count
- OverDraw
- Sprite Packing NPOT
Unity
- Static Batching MEM and CPU
- StaticBatchingUtility.Combine
  - R/W enabled
  - GC Alloc
- Mesh Baker
- Dynamic Batching
  - 900 verts
  - Lightmap data
  - Pass
- Check Batches and SetPass
- Bone and Skinning
  - GPU Skinning
  - BlendShapes
  - Disable Animator
- Instancing
  - GPU Instancing
  - Animation Instancing
- Physics
  - MeshCollider cost too much
  - Mesh R/W Enabled
- PhysicsManager Setting
  - Fixed TimeStep
  - LayerCollisionMatrix
GPU
- Rendering
  - Mesh less tris
  - LODGroup
  - Mesh Baker LOD
  - Terrain Block
  - Texture
    - Size
    - Mipmap
    - Filter Mode : Bilinear - UI Trilinear - Mipmap
Memory
- AssetBundle
  - LZMA or LZ4
  - Serialized file
  - Unload true / false
  - Ref count
- IL2CPP
  - ios binarySize
  - android adb dumpsys meminfo -> .so mmap

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