Avoids potential allocations due to the usage of std::string on strings
that we know at compile time. Most of these might fit in SSO, but it
adds complexity that can be easily avoided with string views.
Emulates negative y viewports with ARB_clip_control. This allows us to
more easily emulated pipelines with tessellation and/or geometry shader
stages. It also avoids corrupting games with transform feedbacks and
negative viewports (gl_Position.y was being modified).
ReinUsesLisp