---
title: "StencilTestGL | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Type Alias StencilTestGL

StencilTestGL:  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["NEVER"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#never)\]; mask: 0 }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["LESS"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#less)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["EQUAL"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#equal)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["LEQUAL"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#lequal)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["GREATER"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#greater)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["NOTEQUAL"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#notequal)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["GEQUAL"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#gequal)\]; mask: number }  
    | { func: [WebGLRenderingContextBase](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/)\[["ALWAYS"](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.WebGLRenderingContextBase/#always)\]; mask: 0 }