[X3D-Ecosystem] Question for X3D Browser Developers

[John Carlson]

As a start, even if you don’t get a response from browser developers, you
can look at my parallel shaders!

https://github.com/coderextreme/X3DJSONLD/tree/master/src/main/shaders


John

On Thu, Feb 26, 2026 at 9:58 AM Bergstrom, Aaron via X3D-Ecosystem <
x3d-ecosystem at web3d.org> wrote:

> X3D Browser Devs,
>
>
>
> So all… please correct me if you think I’ve over simplified what I’ve
> written below.
>
>
>
> Based on my conversation with Michalis, the existing X3D browsers
> (FreeWRL, X3DOM, X_ITE, and CGE) all have different shader naming
> conventions for their GLSL uniform, in, and out variables.
>
>
>
> Any particular browser’s naming convention may, or may not, match the list
> of MaterialX shader variable naming conventions found at the url below:
>
>
> https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/documents/DeveloperGuide/ShaderGeneration.md
>
>
>
> However, based on my reading, it seems to me that I can inject the proper
> naming conventions into the *.frag and *.vert files as a  ‘#define’ alias
> before writing the files to disk.
>
>
>
> Then I could add your browser’s aliases to the field names of the exported
> X3D shader node.
>
>
>
> An injected alias would look something like this (just a random example of
> a GLSL shader alias):
>
>     #define vd_tangentWorld vd.tangentWorld
>
>     #define vd_normalWorld vd.normalWorld
>
>
>
> I would ask that each browser vendor provide me with a list of the naming
> conventions for their browser shader’s naming conventions that match up
> with the MaterialX naming conventions found at the link above.
>
>
>
> If I have that list, I can just add those alias’ to the GLSL file before
> writing it to disk, and write out a version of the X3D shader that matches
> your browser’s naming conventions.
>
>
>
> I just need the alias list for your browser and we should be good to go
> for supporting MaterialX shader export from Maya.
>
>
>
> Aaron
> --
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>
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