syntax help with SPIRV zig shader coding

[stray stratus]

how do you declare the following in zig

• a SSBO/structured buffer
• GPU constants such as processed vertex ID
• a matrix
• a uniform buffer

i'm looking to see if its possible to translate my shader code from slang/glsl to zig.
having everything in one language would be very...nice.

[subtle granite]

You should check issues to see how finished SPIRV support is, and to answer your questions, you can import vertex ID from std.gpu. Check the docs:
https://ziglang.org/documentation/master/std/#std.gpu

[visual ruin]

• a SSBO/structured buffer: you can but it has to be done all in assembly until we get either @SpirvType() or @Opaque()
• GPU constants such as processed vertex ID: see std.gpu
• a matrix: no matrix support planned. use array of vectors
• a uniform buffer:

const UBO = extern struct {
    object_color: @Vector(4, f32),
    light_color: @Vector(4, f32),
};

extern const ubo: UBO addrspace(.uniform);

overall, i don't recommend using it for now unless for experiment

[stray stratus]

I see, i'll save zig shaders for another year then, thanks for the info.

[subtle granite]

So the plan is to allow the same matrix math library in both shader and the rest of the program?

[visual ruin]

yes. e.g. zmath just works