标签:link bat 渲染 引擎 att 文档 reduce set 绘制
U3D文档释义:
SetPass:The number of rendering passes. Each pass requires Unity runtime to bind a new shader
which may introduce CPU overhead
Batches:“Batching” is where the engine attempts to combine the rendering of multiple objects into a chunk of memory in order to reduce CPU overhead due to resources switching.
引擎底层的绘制过程:
setpass(0)
settexture(0, tex)
settexture(1, tex)
setshader(shader)
//绘制第一个模型
fillmesh(0)
drawmesh(0)
//绘制第二个模型
fillmesh(1)
drawmesh(1)
setpass(1)
settexture(0, tex)
setshader(shader)
fillmesh(2)
drawmesh(2)
即是说:batches是对模型网格的合批,多个网格的合成一个,减少像模型网格填充到vertexbuffer中的次数,因为每次填充顶点缓存时都要lock,速度慢
setpass是在绘制前设置材质和状态,一次设置可以多次渲染。
因此,batches数量 大于等于 setpass数量
UNITY statistic中的 SetPass和Batches
标签:link bat 渲染 引擎 att 文档 reduce set 绘制
原文地址:https://www.cnblogs.com/timeObjserver/p/13159568.html