how to disable depth test but enable update depth texture(like glDepthMask(GL_TRUE)) in metal?

In OpenGL, we can disable the depth test and only update the depth buffer in the following ways:

glDisable(GL_DEPTH_TEST); 
glDepthMask(GL_TRUE);
glDisable(GL_DEPTH_TEST)
 means all the fragments will "always pass". 

glDepthMask(GL_TRUE)
 means the depth buffer will be updated with the fragments depth value, whatever value it previously had. 


In Metal, how to set it correctly?

          
        

        
        
          

            


  


          

        
        
        
      

    


    

      


  
  
  
    
      
        
          
            Up vote post of coulsonwang
          
        
      
    
  
  
    
      
        
          
            Down vote post of coulsonwang
          
        
      
    
  
    

    
    
      
        
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