Function getCubeLut

packages/core/src/runtime/colorGrading.ts:455–475

(src: string)

}

function getCubeLut(src: string): LutCacheEntry {
  const resolved = resolveLutUrl(src);
  if ("error" in resolved) return { state: "error", message: resolved.error };
  const cached = LUT_CACHE.get(resolved.href);
  if (cached) return cached;

  const promise = fetch(resolved.href, { credentials: "same-origin" })
    .then((response) => {
      if (!response.ok) throw new Error(`Failed to load LUT (${response.status})`);
      return response.text();
    })
    .then((text) => parseCubeLut(text, { maxSize: MAX_LUT_SIZE }));

  const pending: LutCacheEntry = { state: "pending", promise };
  LUT_CACHE.set(resolved.href, pending);
  promise.then(
    (lut) => LUT_CACHE.set(resolved.href, { state: "ready", lut }),
    (err) => LUT_CACHE.set(resolved.href, { state: "error", message: errorMessage(err) }),
  );
  return pending;
}

function uploadEntryLut(
  entry: ColorGradingEntry,