U3d Shader 转 Laya Shader UnityObjectToClipPos 函数源码翻译

//u_MvpMatrix  mvp矩阵

//a_Position 顶点坐标

vec4 UnityObjectToClipPos()

{
   #ifdef GPU_INSTANCE     
  
    return a_MvpMatrix * a_Position;    

  #else       

    return u_MvpMatrix * a_Position;    

  #endif      

}

vec3 UnityObjectToWorldNormal(vec3 normal)

{
    return normalize(normal*mat3(u_WorldMat));

}