The latter. WGSL (purposefully) lacks many of the high-level niceties of GLSL or HLSL in order to be a good compile target as well. IIRC it has a 1-1 mapping to

The latter. WGSL (purposefully) lacks many of the high-level niceties of GLSL or HLSL in order to be a good compile target as well. IIRC it has a 1-1 mapping to SPIR-V constructs, so you can see how one might build higher-level languages/DSLs/compilers on top of it.