emscripten-core / emscripten-core/emscripten

How to directly get context of WebGL2 from canvas when building with "-sOFFSCREENCANVAS_SUPPORT=1 -sOFFSCREEN_FRAMEBUFFER=1" flags?

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Description

The “-sOFFSCREENCANVAS_SUPPORT=1” and “-sOFFSCREEN_FRAMEBUFFER=1” flags were enabled during compilation, but in some cases, I want to directly get context of webgl2 and webgpu from canvas,not OffscreenCanvas. However, an error occured:

![image](https://github.com/emscripten-core/emscripten/assets/29156275/d7fca201-366d-40ab-b487-db69ee9b364f)

It seems that I should use "canvas.canvas.getContext"???My EMSDK version is 3.1.57

![image](https://github.com/emscripten-core/emscripten/assets/29156275/76108171-a283-4285-8330-ee8f564b9244)

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