Unity中合批失败的原因汇总
声明
本文中的内容属于对《BatchBreakingCause》中内容的汇总及翻译，如果您认为侵犯了您的权益，请您指出，我将尽快修改。
本文内容摘自：《BatchBreakingCause》
摘要
在Unity开发中为了保证性能，降低DrawCall，会进行合批处理（静态/动态合批），但是在处理完毕后，使用Frame Debug工具查看时会看到很多合批失败的情况，本文将《BatchBreakingCause》提到的合批失败的情况进行了翻译转述。
合批失败原因
使用Frame Debug进行采样查看时，合批失败时会提示失败的原因
各种合批失败的情况如下：
- Additional Vertex Streams
- 原文：the object has additional vertex streams set using MeshRenderer.additionalVertexStreams.
- 译文：此物体通过
MeshRenderer.additionalVertexStreams设定了额外的顶点信息流
- Deferred Objects on Different Lighting Layers
- 原文：the object is on a different light layer.
- 译文：此物体位于另外一个不同的光照层上
- Deferred Objects Split by Shadow Distance
- 原文：one of the objects is within shadow distance, the other one is not.
- 译文：对应的两物体其中一个在阴影距离范围内，另一个不在范围内
- Different Combined Meshes
- 原文：the object belongs to another combined static mesh.
- 译文：此物体属于另一个已经静态合并（合批）后的网格
- Different Custom Properties
- 原文：the object has a different MaterialProperyBlock set.
- 译文：此物体设定了不同的
MaterialProperyBlock属性
- Different Lights
- 原文：the object is affected by a different forward light.
- 译文：此物体受不同的前向渲染光照的影响
- Different Materials
- 原文：the object has a different material.
- 译文：此物体使用了不同的材质
- Different Reflection Probes
- 原文：the object is affected by a different reflection probe.
- 译文：此物体受不同的反射探针的影响
- Different Shadow Caster Hash
- 原文：the objects either have different shadow caster shaders, or have different shader properties / keywords that affect the output of the shadow caster pass.
- 译文：此物体使用了不同的阴影投射着色器，或者设定了不同的属性/关键字，进而影响到了阴影的输出
- Different Shadow Receiving Settings
- 原文：the objects either have different "Receive Shadows" settings, or some objects are within the shadow distance, while some other objects are not.
- 译文：此物体设定了不同的
Receive Shadows，或者一些物体在阴影距离范围内而另外一些不在范围内
- Different Static Batching Flags
- 原文：the object has different static batching settings.
- 译文：此物体设定了不同的静态合批参数
- Dynamic Batching Disabled to Avoid Z-Fighting
- 原文：dynamic batching is turned off in Player Settings or disabled temporarily in the current context to avoid z-fighting.
- 译文：在
Player Settings中关闭了动态合批，或者在当前的环境中为了避免深度冲突而临时关闭了合批
- Instancing Different Geometries
- 原文：rendering different meshes or sub-meshes with GPU instancing.
- 译文：使用
GPU instancing渲染了不同的网格或者子网格
- Lightmapped Objects
- 原文：the object uses a different light map or has different light map uv transformations within the same light map.
- 译文：此物体使用了不同的光照贴图，或者虽然使用了相同的光照贴图但是UV的变换不同
- Lightprobe Affected Objects
- 原文：the object is affected by different light probes.
- 译文：此物体被不同的光探针影响
- Mixed Sided Mode Shadow Casters
- 原文：objects have different "Cast Shadows" settings.
- 译文：此物体的
Cast Shadows设定不同
- Multipass
- 原文：the object is using a multi-pass shader.
- 译文：此物体使用了多通道的着色器
- Multiple Forward Lights
- 原文：the object is affected by multiple forward lights.
- 译文：此物体受多个前向光的影响
- Non-instanceable Property Set
- 原文：non-instanced properties are set for an instanced shader.
- 译文：为instanced着色器设定了non-instanced的属性
- Odd Negative Scaling
- 原文：the object has odd negative scaling (e.g. (1, -1, 1)).
- 译文：此物化的缩放值使用了负数
- Shader Disables Batching
- 原文：the shader explicitly disables batching with the "DisableBatching" tag.
- 译文：着色器使用
DisableBatching标签显示关闭了批处理
- Too Many Indices in Dynamic Batch
- 原文：there are too many indices (more than 32k) in a dynamic batch.
- 译文：动态合批时索引过多（超过了32K）
- Too Many Indices in Static Batch
- 原文：there are too many indices in the combined mesh of a static batch. The limit is 48k indices on OpenGL ES, 32k on OSX and 64k on other platforms.
- 译文：静态批处理中合并的网格索引过多。对于Opengl ES来说上限是48K,OSX是32K，其它平台是64K
- Too Many Vertex Attributes for Dynamic Batching
- 原文：a submesh we are trying to dynamically batch has more than 900 vertex attributes.
- 译文：动态合批时顶点的属性过多，超过了900个
- Too Many Vertices for Dynamic Batching
- 原文：a submesh we are trying to dynamically batch has more than 300 vertices.
- 译文：动态合批时顶点的数量过多，超过了300个