This shader-reflection interface provides access to a variable.
interface ID3D11ShaderReflectionVariable
To get a shader-reflection-variable interface, call a method like ID3D11ShaderReflection::GetVariableByName.
Header: Declared in d3d11shader_x.h (d3d11shader.h on other Windows platforms).
Library: Use d3d11_x.lib (d3d11.lib on other Windows platforms).