Custom Blending Equation Constants
Todo: 这篇文章里的英文对应的是Three.js里的对象方法，后续进行详细说明，尾部附上源码
方程式(Equations)
THREE.AddEquation
THREE.SubtractEquation
THREE.ReverseSubtractEquation
THREE.MinEquation
THREE.MaxEquation
指定系数(Destination Factors)
THREE.ZeroFactor
THREE.OneFactor
THREE.SrcColorFactor
THREE.OneMinusSrcColorFactor
THREE.SrcAlphaFactor
THREE.OneMinusSrcAlphaFactor
THREE.DstAlphaFactor
THREE.OneMinusDstAlphaFactor
来源因子(Source Factors)
THREE.DstColorFactor
THREE.OneMinusDstColorFactor
THREE.SrcAlphaSaturateFactor
Source
src/Three.js
关键字：three.js, three, factors, source