Naga: SPV to WGSL

[fhoenig]

My engine is written in Vulkan 1.2 with lots of GLSL fragment, vertex and compute programs.
I just did a quick test with naga to see whether they can compile to WGSL.

From GLSL input some errors immediately don't seem reassuring:

Example:

error: Not implemented: variable qualifier
  ┌─ x.frag.glsl:7:38
  │
7 │ layout(set = 0, binding = 0) uniform sampler2D in_color;
  │                                      ^^^^^^^^^

and from SPV all of them error with:

naga TAA.vert.spv 
unsupported instruction Line at Type

The spirv is compiled with glslc (Google).

What would be the most robust path today for going from GLSL to WGSL (compiler versions, GLSL version, SPIR-V version, compiler arguments etc) ?

Thank you!

[teoxoy]

Naga doesn't currently support combined image/samplers (#4342, #4323) which seems like a hard blocker for your shaders.