Re: WGSL parser + reflection library (javascript)

I don't know if this is similar or not but twgl has structure setters

https://twgljs.org/#setting-uniform-and-uniformblock-structures-and-arrays

It does the same for uniform blocks given reflection data for a uniform
block


On Tue, Nov 16, 2021 at 2:22 PM Jeremy Sachs <jeremysachs@rezmason.net>
wrote:

> Hi Brendan! Thanks for this!
>
> I think this work is basically essential. I imagine you had to tackle
> uniform buffer layout on a personal WebGPU project, and then packaged up
> your existing solution to help other people. I've wound up doing something
> similar ( https://github.com/Rezmason/matrix/blob/master/lib/gpu-buffer.js ),
> though I didn’t go as far as you did and extract bind group information.
>
> The way I see it, a solution similar to gl-matrix ( https://glmatrix.net )
> for composing data to send to the GPU will have a big impact on the rate of
> adoption of WebGPU by enthusiasts who work outside of ThreeJS, Babylon.js
> and so on. Having a common solution, the sooner the better, would be
> beneficial, because otherwise we’ll have a partially implemented library
> for every enthusiast! :D
>
> I don’t know what your bandwidth and priorities are, but would you (and
> anyone else I suppose) be interested in collaborating on this? I’d also be
> interested in chatting with Brandon Jones about learning from the design
> and adoption of gl-matrix.
>
> In the meantime, I’ll give your library a try in a branch before long. :)
>
> -Jeremy Sachs
>
>
> On Nov 15, 2021, at 8:12 PM, Brendan Duncan <brendan.duncan@unity3d.com>
> wrote:
>
> Hi WebGPU people,
>
> I wanted to share a WebGPU utility project I wrote recently and put up on
> github, wgsl_reflect:
> https://github.com/brendan-duncan/wgsl_reflect
>
> wgsl_reflect is a Javascript library for parsing and analyzing WGSL
> shaders. It has a custom WGSL parser which generates an AST for the shader.
> It can then analyze the AST and provide all sorts of static analysis and
> reflection information about the shader. For example, it can report all of
> the resource bind groups in the shader, tell you what uniform buffers it
> has, all of the members of those uniform buffers, the type, size, and
> offsets of those block members, etc.
>
> I wrote it because I wanted a way to take in user authored WGSL shaders,
> without the user having to provide additional data for the layout of the
> uniform buffers in the shaders. Calculating buffer member offsets isn't
> the easiest thing to do, with all of the alignment rules. I wanted to be
> able to extract that information automatically from the shader itself.
>
> It's still a work-in-progress, needs some polish, error handling, and
> documentation. I hope others find it useful.
>
> Brendan Duncan
>
>
>