I'm doing some development work with GLSL shaders and have one returning a buffer of PackedByteArray that represents point information. I'd like to convert this to a PackedVector3Array so that I can then pass it to an ArrayMesh to create a mesh - however, Godot seems to lack any way to create PackedVector3Arrays from byte arrays. PackedByteArray has to_float32_array() and to_float64_array(), but neither of those have a way to then convert it to PackedVector3Array.
Is there some way to convert my buffer to a PackedVector3Array, or do I have to do a slow CPU copy into a new array?