XrApplicationInfo.dart

// struct XrApplicationInfo {
//   char applicationName[128]; // 128 bytes
//   uint32_t applicationVersion; // 4 bytes
//   char engineName[128]; // 128 bytes
//   uint32_t engineVersion; // 4 bytes
//   XrVersion apiVersion; // assume this is a uint64_t, i.e. 8 bytes
// };
class XrApplicationInfo extends Struct {
  Pointer<Utf8> get applicationName => addressOf.cast<Utf8>();

  int get ApplicationVersion =>
      addressOf.cast<Uint8>().elementAt(128).cast<Uint32>().value;

  Pointer<Utf8> get engineName => addressOf.cast<Utf8>().elementAt(128 + 4);

  int get engineVersion =>
      addressOf.cast<Uint8>().elementAt(128 + 4 + 128).cast<Uint32>().value;

  int get apiVersion =>
      addressOf.cast<Uint8>().elementAt(128 + 4 + 128 + 4).cast<Uint64>().value;

  factory XrApplicationInfo.allocate() {
    final structSize = 128 + 4 + 128 + 4 + 8;
    final ptr = allocate<Uint8>(count: structSize);

    for (var idx = 0; idx < structSize; idx++) {
      ptr.elementAt(idx).value = 0;
    }

    return ptr.cast<XrApplicationInfo>().ref;
  }
}