simple-game VS naga

I have a somewhat naive version of this sort of system running via wgpu, but that's likely lower level than you'd want to go.

I won't claim this is great code, but poke around a little bit at my wgpu code and get a sense for how it compares to OpenGL. Overall the concepts are pretty close to each other, it's just that you declare everything up front instead of poking at OpenGL via functions to set things to the state you want.

It's really not that bad. I had some complaints about WGSL a few months ago but it was surprising how quickly it improved. Here are some simple real-world shaders you can look at:

https://github.com/bschwind/simple-game/tree/9de179085a04dd4...

If you combine it with a quick build step to give you shader compilation errors before your program runs, it becomes a pretty nice shading language. There are still a few rough edges but it's not _that_ bad to work with.

Thanks! I ended up going that route here

That wouldn't have been all that different from WGSL though, the most important thing is that whatever WebGPU uses for its shaders can be translated to and from SPRIV (and WGSL does that too (e.g. via https://dawn.googlesource.com/tint and https://github.com/gfx-rs/naga).

Hey all, wanted to put this link in here, where I'm proposing changing the API for errors in naga, so Naga can take ownership of error presentation and actually Make Shader Compilation Messages Comfy™: https://github.com/gfx-rs/naga/issues/2317

EDIT: There is also naga but it does not take HLSL as input: https://github.com/gfx-rs/naga but you can use DirectXShaderCompiler to compile to SpirV, then use naga to compile to Metal.

And it seems that naga https://github.com/gfx-rs/naga Already has a working front/backend for wgsl.

This is basically Ray Tracing support in Blade. So far, only ray queries are supported. Unlike prior work on ray tracing in Rust, this is original due to all shader code being WGSL, see the Naga PR.

There's a compiler that can translate from WGSL to SPIR-V called naga. Having such a compiler is essential, since WebGPU is planned to use WGSL and browsers are expected to implement rendering via Vulkan (and probably Metal and DX12).

Not sure about on the CPU, but naga is a shading language transpiler you can write custom front/backends for.

The spec docs are actually pretty useful https://www.w3.org/TR/WGSL/ besides that I was using naga's tests for reference https://github.com/gfx-rs/naga/tree/master/tests

For cross-platform support look at WebGPU and Vulkan (e.g,: [0] [1]. Essentially, you would need to write the func in WGSL or GLSL, HLSL or MSL. Each of these can be cross-compiled to SPIR-V (what Vulkan needs) with cross-compilers such as spirv-cross and naga.