版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/nemo_free/article/details/51161847
目录结构
- 项目简述
- 策划文案
- 美术资源
- 程序逻辑
- 性能优化
项目简述
- 项目方向
- 时间计划
- 人员配置
- 具体内容执行 GO!
策划文案（略过）
“兵马未动，粮草先行~”，优秀的策划文档是项目良好的开端
美术资源
- Standard
- Model
- Shader
- Texture
- Lighting
- Animator/Controller
- Audioclip
Standard
| Material使用 |
| Model三角面 |
| Texture尺寸 |
| Particle限制 |
| Animation帧频 |
Model
- Enabled运行时更改（makes a copy in memory）,Disable 节省内存
- Optimize Mesh 必须选择
- Normals & Tangents 设置为非Import选项可以降低memory以及减少ipa/apk包体大小
Shader
- Check对应的Vertex/fragment
- Compile 汇编代码/GLSL代码
- Shader性能分析工具 - AMD GPU ShaderAnalyzer/PVRShaderEditor
- Shader compile when need
- Comiled Shader缓存
Texture
- PSD，TIFF，JPG，TGA，PNG，GIF,BMP,IFF,PICT
- Scence/Mipmaps check纹理精度
- Enabled Runtime 可更改(Make a copy in memory),Disable save memory
- PVRTC格式Texture需要为正方形
- Mipmap空间换时间
Light
- Mobile device推荐使用Baked or Mixed
- Rendeer Mode 尽量少用Important
- Window->Lighting
- Scale in light map
- Preserve UVs
Animator/Controller
- Apply Root Motion 动画驱动位置
- State 切换 & Bleed Tree
- Window -> Animator
AudioClip
- 常用格式aif,wav,mp3,ogg
- Verbis-encoded(ogg)解压变大10倍
- PCM高质量单低压缩率
- ADPCM性能结余PCM与Mp3之间
- Mp3格式在IOS设备你有硬件解码器
程序逻辑
- Logic架构
- Script应用
- Assert管理
- Dynamic update
Logic架构
- Modular Design
- "Plug and Play"
- independence and encapsulation(封装)
Script应用
- Edit->Project Setting ->Script Execution
- MonoBehavior 执行机制
- C++到托管C#存在调用开销
- Script Call Optimization 可忽略 Exception
- Script serialization (ScriptableObject)
Asset管理
- Asset Serialization (Text,Binary,Mixed)
- .meta file
- UI atlas arrange
- Prefab(模型文件都变成prefab)
- Asset bundle
Dynamic Update
- Script updata(使用C#前提下Android使用dll反射，其他平台暂不支持)
- 美术Assets(使用Asset bundle)
- 配置数据
性能优化
- Graphics
- Physics
- Scripts
- File size
- Tools
Graphics
- Bottlenecks on CPU or GPU
- GPU limitaiton (verticle not more than 10w on mobile,several millions on PC)
- Vertex processiong on GPU.(skinned meshes,cloth simulation,particles etc.)
CPU optimization
- Combine objects(manually or batching)
- Use less materials
- Putting separate textures into a larger
- Use less muliple render(reflections,shadows,perpixel lights etc)
GPU optimaization
- Model Geometry
-
- Don't use any more triangles than necessary
- Static batching non-moving objects
- Try to keep the numbers of UV mapping seams and hard edges(doubled-up vertices) as low as possible
- Lighting Performance
-
- LightMap replace real time lighting
- Shader instad of lighting
- Use the least pixel lighting saves both CPU and the GPU
- High-performance shaders
-
- Alpha Blend replace Alpha Test
- Complex mathematical operations pow,exp,log,cos,sin,tan
- Floating point operations Cg/HLSL(float ,half,fixed) GLSL ES(highp,mediump,lowp)
- Texture Compression and Mipmaps
-
- Compression save memory and bandwidth
- Always Mipmaps for textures used in a 3D scene
- LOD and Pre-Layer Cull
-
- LOD forlarge object
- Camera,layCullDistances for small object
Physics
- Fixed Timestep
- Mesh colliders and wheel colliders
- Rigidbody
- Physics.RaycastAll in scripts 存在内存中
Scripts
- Optimized by Design
- Use IL2CPP
- Script Call Optimization
- Aviod allcating memory frequently
- Profiler is King
File Size
- Identify the assets size by Consonle->Open Editor Log
- Replach assets in Resources with AssetBundles
- Use .NET Subset if you can
- IOS Stripping
- Specific operaiton
Tools
- Unity Profiler
- Memory Profiler https://bitbucknet.org/Unity-Technologies/
- MAC OS -> Instruments Allocations,Time Profiler
Search 打法：在Manual 输入 Optimiziing 优化的所有项都出现了