visgl / loaders.gl

Looks like we are not supporting Draco files with attributes of type of INT64, UINT64, FLOAT64, BOOL.

The error is at

loaders.gl/modules/draco/src/lib/draco-parser.ts

Line 354 in 47f091c

const TypedArrayCtor = DRACO_DATA_TYPE_TO_TYPED_ARRAY_MAP[attribute.data_type];
attribute.data_type is 10 and TypedArrayCtor is undefined.

dataType 10 is FLOAT64

We can see all the data types supported by Draco here:
https://github.com/google/draco/blob/7d58126d076bc3f5f9d8c114d1700b7311faecfe/src/draco/core/draco_types.h#L26.

const DRACO_DATA_TYPE_TO_TYPED_ARRAY_MAP = {
  1: Int8Array,
  2: Uint8Array,
  3: Int16Array,
  4: Uint16Array,
  5: Int32Array,
  6: Uint32Array,
  9: Float32Array
};

  DT_INVALID = 0,
  DT_INT8 = 1,
  DT_UINT8 = 2,
  DT_INT16 = 3,
  DT_UINT16 = 4,
  DT_INT32 = 5,
  DT_UINT32 = 6,
  DT_INT64 = 7,
  DT_UINT64 = 8,
  DT_FLOAT32 = 9,
  DT_FLOAT64 = 10,
  DT_BOOL = 11,

Closing, will reopen if we get more information from Cesium and others on how these attributes are supposed to be handled, see attached PR

[Enhancement]: Support more data types in Draco decoder