interface GPUDepthStencilState
          
Private
depthWriteEnabled: boolean
      
    optional
stencilFront: GPUStencilFaceState
      
    optional
stencilBack: GPUStencilFaceState
      
    optional
stencilReadMask: number
      
    optional
stencilWriteMask: number
      
    optional
depthBias: number
      
    optional
depthBiasSlopeScale: number
      
    optional
depthBiasClamp: number