Look in src/library_gl.js (makeContextCurrent), I believe the GL context is
stored in Module.ctx.

On Thu, Sep 1, 2016 at 2:24 AM, Harold Comere <[email protected]>
wrote:

> Hi,
>
> I am trying to grab HTML5 video/webcam frames into a WebGL texture.
>
> Old threads demonstrate that it is straightforward to do it in pure JS :
>
> * https://github.com/kripken/emscripten/issues/1434#issuecomment-48155712
> * https://groups.google.com/forum/#!searchin/emscripten-
> discuss/video|sort:relevance/emscripten-discuss/eKNQofq-d0E/V2sok6GoQUMJ
>
> I my case, the WebGL context is created using native OpenGLES 2.0 API and
> i have an embedded JS library which is responsible of all getUserMedia
> stuff.
> Therefore i need to retrieve the current WebGLRenderingContext object from
> my JS library code to be able to call texImage2D with video element as
> pixel source.
>
> After some researches, i was not able to find out how to do it :(
>
> Does anyone has insights about how to retrieve the current
> WebGLRenderingContext from JS ?
>
> Regards,
> Harold
>
>
>
>
>
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