GlslUnit

One assembled translation unit, or the reason there is none.

In the namespace eval::internal. Declared in src/libs/libeval/eval/GlslAssembler.hpp.

Detailed description

A refusal is a value, never a placeholder. The emitter this was extracted from wrote an "empty output expression" comment followed by `0.0` and set a flag — valid GLSL, so the shader compiled and the caller had to remember to ask. §SUT-3a: a path that cannot be handled fails.