[x3d-public] Clarifications on "glTF Interactivity Extensions Approach Finalization: Your Feedback Needed!"

[John Carlson]

Is there anyway someone can clarify licenses for data in this repository?


https://github.com/KhronosGroup/glTF-Sample-Assets/tree/main/LICENSES

I’m not really wanting to touch any assets in this repository, but where
are the glTF viewer conformance models?

What I want to do is convert these glTF assets to X3D JSON with
create3000’s x3d-tidy, then validate with coderextreme’s x3dvalidate, which
includes schema for X_ITE material extensions from glTF.

What I need to know is, can I put the X3D JSON versions into a repository,
without carrying all the above licenses over.

John

On Fri, Jun 6, 2025 at 3:56 PM Leonard Daly via x3d-public <
x3d-public at web3d.org> wrote:

> I think a few of the statements are incorrect or not clear. My comments
> strictly address those items that discuss Khronos-developed material.
>
>
> On 6/6/2025 10:33 AM, Brutzman, Donald (Don) (CIV) via x3d-public wrote:
>
> Strategic Review
>
>
>    - The work looks thorough and consistently high quality, matching
>    other Khronos specifications.
>
> Thank you. I will pass on this praise.
>
>
>
>    - The Khronos license terms appear to be unchanged since our prior
>    review.
>    - Use of the extension requires either membership as an Adopter of
>       Khronos IPR policy, or else " express prior written permission of Khronos."
>       - Patented materials are included in the specification (though not
>       specifically identified).
>       -
>       https://github.com/KhronosGroup/glTF/blob/interactivity/extensions/2.0/Khronos/KHR_interactivity/Specification.adoc#foreword
>
>
> There has been no change to the Khronos IP policy. The full first
> paragraph of statement in the draft specification is:
>
> This specification is protected by copyright laws and contains material
> proprietary to Khronos. Except as described by these terms, it or any
> components may not be reproduced, republished, distributed, transmitted,
> displayed, broadcast, or otherwise exploited in any manner without the
> express prior written permission of Khronos.
>
> Note the important clause at the beginning of the second sentence: "Except
> as described by these terms". The subsequent paragraphs provide the terms,
> specifically:
>
>
> Khronos grants a conditional copyright license to use and reproduce the
> unmodified specification for any purpose, without fee or royalty, EXCEPT no
> licenses to any patent, trademark or other intellectual property rights are
> granted under these terms. Parties desiring to implement the specification *and
> *make use of Khronos trademarks in relation to that implementation, *and *receive
> reciprocal patent license protection under the Khronos IP Policy must
> become Adopters... [bolding is mine - ld]
>
> If you have no interest in using Khronos trademarks or receiving
> reciprocal patent licenses, then you do not need to become an "Adopter".
>
>
> Note that the specification document is licensed as "CC-BY 4.0".
>
>
>
> Technical Review
>
>    - This extension is for JavaScript programmers who want to animate
>    glTF models.
>
>
> There is no programming required for the Interactivity extension. glTF
> viewers that correctly implement the specification handle the data that is
> stored in the glTF file structure and act according to that data. The data
> is not code (JavaScript or anything else). Also not that "animate" means
> any kind of change to the model or environment.
>
>
> Leonard Daly
>
>
>
> ...
>
> Sincerely, Don Brutzman and Dick Puk
>
>
> all the best, Don
>
> --
>
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
>
> X3D graphics, virtual worlds, navy robotics
> https://faculty.nps.edu/brutzman
>
>
>
> --
> *Leonard Daly*
> 3D Systems Engineering
> President, Daly Realism - *Creating the Future*
> _______________________________________________
> x3d-public mailing list
> x3d-public at web3d.org
> http://web3d.org/mailman/listinfo/x3d-public_web3d.org
>
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