/**
 * For every adjacent pair of sorted keys where the high-bit tile index
 * differs, atomicMin's the current position into `tileOffsets[t]` for
 * every tile `t` in `(prevTile, curTile]`. Combined with the sentinel
 * init this gives `tileOffsets[T]` = first index in `sortedKeys` whose
 * tile bits equal T (or the sentinel if T is empty).
 *
 * Dispatched indirectly with workgroup count `ceil(totalPairs / 64)` so
 * that we don't waste invocations on the unused tail of the pairs
 * buffer.
 *
 * @returns WGSL source for the find-boundaries compute shader.
 */
declare const findBoundariesWgsl: () => string;
export { findBoundariesWgsl };