Function gpuConditional

src/compute-engine/compilation/gpu-target.ts:359–368

* Emit a conditional `cond ? whenTrue : whenFalse` for the target language. * * GLSL has the ternary operator; WGSL does not and uses * `select(false_value, true_value, condition)` instead.

(
  cond: string,
  whenTrue: string,
  whenFalse: string,
  target?: CompileTarget<Expression>
)

  'using',
  'virtual',
  'where',
]);

/** The reserved-word set for a GPU shader language, or an empty set. */
function gpuReservedWords(language?: string): ReadonlySet<string> {
  if (language === 'wgsl') return WGSL_RESERVED;
  if (language === 'glsl') return GLSL_RESERVED;
  return new Set();
}

/**
 * Fail closed (D6) if `id` is a reserved word in the target shader language.
 * A user variable / loop index carrying a reserved name would emit source that