message: Keep any preserved builtins in entry point interface. Closes
  * When running SPIR-V < 1.4 we only put Input variables in the entry point
  interface, which is usually just our thread ID. However we keep subgroup
  builtins as-is and they are also Inputs and need to be kept in the interface.
diff: @@ -876,9 +876,14 @@ static void ConvertToMeshOutputCompute(const ShaderReflection &refl,
  // name :(.
  // editor.SetName(wrapperEntry, "RenderDoc_MeshFetch_Wrapper_Entrypoint");
  - // if we're not using all globals, this is only Input variables so only our invocation Id
  + // if we're not using all globals, this is only Input variables so only our invocation Id and any
  + // builtins we kept
  if(!editor.EntryPointAllGlobals())
  + {
  globals = {invocationId};
  + for(rdcspv::Id id : builtinKeeps)
  + globals.push_back(id);
  + }
  // insert the new patched entry point with the globals
  editor.AddOperation(editor.Begin(rdcspv::Section::EntryPoints),
  