get texture object of webgl by ID

[Alon Faraj]

Im using the function bindTexture directly from JS:

var texture = some_GL_ID;

gl.bindTexture(gl.TEXTURE_2D, texture);

but I get an error:

Failed to execute 'bindTexture' on 'WebGLRenderingContext': parameter 2 is not of type 'WebGLTexture'.

How Can I get the 'WebGLTexture' itself by GL texture ID?

[Alon Zakai]

The GL object has mappings of ids to objects, GL.textures[id] will give you the WebGLTexture for it.

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[Alon Faraj]

Thanks!

but now I get an error/warning "WebGL: INVALID_OPERATION: bindTexture: object not from this context" when rendering to the second canvas.

any idea why?

בתאריך יום רביעי, 24 במאי 2017 בשעה 19:49:52 UTC+3, מאת Alon Zakai:

[Brian Gavin]

I would guess the value of some_GL_ID is incorrect based on your error message.   

Brian Gavin

[Alon Zakai]

I'm not familiar with that error message, but I guess it means that you need to use the same context as the texture was created in? That would be GL.currentContext (unless you created more than one).

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