Polygon Soup is a subtype of Streamed Track Data. This data type, along with the Node Branch type, is used to store the collision geometry of a given track unit.

32-bit (PolygonSoup)

Burnout 3's promotional demo is the only known game to use the 32-bit version; otherwise, all Takedown-era games use the 16-bit version documented further below.

Header

Offset	Name	Type
0x00	Polygon indices offset	PolygonBase*
0x04	Vertices offset	Vertex*[]
0x08	Data size	uint
0x0C	Polygon size	uint8
0x0D	Polygon count	uint8
0x0E	Vertex count	uint8

PolygonBase

Offset	Name	Type	Value	Notes
0x00	Indices	uint8[]

Vertex

Offset	Name	Type
0x00	X	float
0x04	Y	float
0x08	Z	float

16-bit (PolygonSoup16)

Header

Offset	Name	Type
0x00	Polygon indices offset	PolygonBase*
0x04	Vertices offset	Vertex16*[]
0x08	Data size	uint16
0x0A	X offset	uint8
0x0B	Y offset	uint8
0x0C	Z offset	uint8
0x0D	Polygon size	uint8
0x0E	Polygon count	uint8
0x0F	Vertex count	uint8

PolygonBase

Offset	Name	Type	Value	Notes
0x00	Indices	uint8[]

Vertex16

Offset	Name	Type
0x00	X	uint16
0x02	Y	uint16
0x04	Z	uint16