Add a change in define

  • New variables in shader
    • WebGLProgram prefixVertex prefixFragment variable
      • I’m going to put the #define in there
      • For example: the parameters useUserColor? ‘#define USE_USER_COLOR’ : ”,
    • WebGLPrograms function parameterNames variable
      • Parameters [parameterNames[I]] parameterProgramCacheKey
      • For example :parameterNames = [‘useUserColor’]
    • GetParameters function Specifies the parameters variable
      • Compare the parameters with getProgramCacheKey to determine whether to update them
      • Parameters = {useUserColor: material. UseUserColor,}
  • New property in material
    • The MeshPhysicalMaterial constructor
      • For example :this.useUserColor = true;
    • MeshPhysicalMaterial copy function
      • this.useUserColor = source.useUserColor;