method WebGLRenderingContext.prototype.stencilFuncSeparateimport { WebGLRenderingContext } from "https://deno.land/x/gluten@0.1.7/mod.ts"; stencilFuncSeparate(face: number,func: number,ref: number,mask: number,)Sets the front and/or back function and reference value for stencil testing. Parametersface: numberfunc: numberref: numbermask: number