GPUStencilFaceState
compare: GPUCompareFunction= 'always'
GPUCompareFunction
'never', 'less', 'equal', 'less-equal', 'greater', 'not-equal', 'greater-equal', 'always'failOp: GPUStencilOperation= 'keep'
GPUStencilOperation
'keep', 'zero', 'replace', 'invert', 'increment-clamp', 'decrement-clamp', 'increment-wrap', 'decrement-wrap'depthFailOp: GPUStencilOperation= 'keep'
GPUStencilOperation
'keep', 'zero', 'replace', 'invert', 'increment-clamp', 'decrement-clamp', 'increment-wrap', 'decrement-wrap'passOp: GPUStencilOperation= 'keep'
GPUStencilOperation
'keep', 'zero', 'replace', 'invert', 'increment-clamp', 'decrement-clamp', 'increment-wrap', 'decrement-wrap'