It's still not great (mostly on the language side, I think), but
different glsl shader types get the correct model and fragment shaders
even get the correct mode.
I really don't like the way they're included (I'm really looking forward
to #embed, but gotta wait for gcc 15), and I'm a tad grumpy that the
documentation for them
(https://registry.khronos.org/SPIR-V/specs/unified1/MachineReadableGrammar.html)
is wrong (missing fields), but I think I like the result.
The grammars (core and glsl.std.450) are parsed into structs that should
be fairly easy to interpret: the instructions, kinds, and enumerant
values are sorted by name for search with bsearch. Having the data
parsed in means source code can refer to the items by name rather than
magic numbers, which will be very nice for intrinsics and image types
(and probably a few other things).
The imports need their result id recorded somewhere (and the hard-coding
in qc-parse.y removed), but that's a little bit of progress getting
spir-v working.
While I'm not happy with the module "creation" (at least it's limited to
two places), setting it up with spir-v capabilities and memory model
seems quite nice and should play nicely with being set up from within
source code, though using uint constant expressions might be overkill.
