Reflection pipeline
===================

::

   authored attributes
      -> Slang reflection
      -> ParameterDescriptor
      -> ShaderParameterModel
      -> ParameterInspector

Uniform globals arrive wrapped in an implicit constant buffer layout, which the
compiler adapter unwraps before reading fields. Values are packed by reflected offset,
not UI order. Host-managed descriptors participate in binding but are filtered from
artist controls.

Implementation
--------------

Relevant source: ``ShaderParameterModel.*``, ``ParameterInspector.*``, and reflection
handling in ``SlangCompiler.cpp``.