[x3d-public] Feature comparison of glTF and X3D as Interchange Formats

[Michael Aratow]

Thanks Michalis!  I am one of those readers, since I didn't read the 
fine print or Leonard's explanatory sentence appropriately!

I wonder why the request was just for interchange profile? Wouldn't a 
true comparison be of all the features supported by the complete spec of 
each?  That's what I would think a developer would be wanting to know.


On 9/21/17 5:32 AM, Michalis Kamburelis wrote:
> 2017-09-20 16:14 GMT+02:00 Leonard Daly <Leonard.Daly at realism.com>:
>> In response to a request, I wrote an article comparing features of glTF to
>> X3D Interchange Profile. Most of the comparisons include links to illustrate
>> the capabilities. The article is online at
>> http://realism.com/blog/gltf-x3d-comparison. It includes comparison to
>> features and capabilities of both and a few items showing the extent of
>> support in other packages.
> Thank you. That is very informative.
>
> The only thing I would complain is that some readers may not realize
> that this is only talking about X3D in Interchange profile. Some
> features ("Quad surface model", "Mesh skin", "Custom Shaders", "Joint
> animation") are actually available in X3D, just not in the
> "Interchange" profile. I know, you mention this in the footnotes --
> I'm just afraid that some readers will not read the footnotes, and
> think "oh, X3D doesn't support this-and-that while glTF does". Just
> like not all X3D browsers implement the additional components beyond
> Interchange, but also not all glTF readers implement all features of
> glTF format, so the *practical* difference between these two formats
> is more even in my experience.
>
> P.S. "Custom shaders" in glTF: work is in progress on
> https://github.com/KhronosGroup/glTF/tree/master/extensions/Khronos/KHR_technique_webgl
> . Indeed, this is not finished (and it's an extension, not part of
> "core" format spec).
>
> Regards,
> Michalis
>
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