Method Append

src/gpu/resources/ResourceKey.cpp:91–112

}

UniqueKey UniqueKey::Append(const UniqueKey& uniqueKey, const uint32_t* data, size_t count) {
  if (uniqueKey.empty()) {
    return {};
  }
  if (count == 0) {
    return uniqueKey;
  }
  auto offset = std::max(uniqueKey.count, static_cast<size_t>(2));
  auto newData = CopyData(data, count, offset);
  if (newData == nullptr) {
    return uniqueKey;
  }
  if (uniqueKey.count > 2) {
    memcpy(newData + 2, uniqueKey.data + 2, (uniqueKey.count - 2) * sizeof(uint32_t));
  }
  auto newCount = count + offset;
  auto domain = uniqueKey.uniqueDomain;
  newData[1] = domain->uniqueID();
  newData[0] = HashRange(newData + 1, newCount - 1);
  domain->addReference();
  return {newData, newCount, domain};
}

static uint32_t* MakeDomainData(UniqueDomain* uniqueDomain) {
  DEBUG_ASSERT(uniqueDomain != nullptr);