VST-format.md

From the PDF file

VSTHeader

Type	Value
byte	'V'
byte	'S'
byte	'T'
byte	'\0'
byte[4]	Byte order identifier. {3, 2, 1, 0} for big-endian; {0, 1, 2, 3} for little-endian.
int	Binary major version number (0 for ViSTa files as described in this document).
int	Binary minor version number (8 for ViSTa files as described in this document).
byte[4]	Implementation Identifier (see Section 4).
byte[8]	Reserved for future use.
int	Number of TextureRef listed in the file (≥ 1).
int	Number of Vertex listed in the file (≥ 1).
int	Number of LOD listed in the file (≥ 1).

BoundingBox

Type	Value
float	xmin
float	ymin
float	zmin
float	xmax
float	ymax
float	zmax

TextureRef:

Type	Value
byte[2048]	An implementation-dependent persistent reference to the rectified version of an image acquired by the left camera of the stereo hardware

CoordinateSystem:

Type	Value
byte[4096]	Coordinate system specification (implementation-dependent).

Vertex:

Type	Value
float	(LSB first) texture coordinate s (see Section 7 for numeric limits).
float	(LSB first) texture coordinate t (see Section 7 for numeric limits).
float	(LSB first) spatial coordinate x.
float	(LSB first) spatial coordinate y.
float	(LSB first) spatial coordinate z.

LODHeader:

Type	Value
int	Total size of this LOD, including LODHeader (bytes).
byte[8]	Reserved for future use.
int	Total number of distinct Vertex referenced in this LOD (≥ 1).
float	Eyepoint distance to terrain bounding box centroid (as specified directly after VSTHeader); threshold below which to consider switching to the next higher-resolution LOD (≥ 0; see below).
int	Number of Patches listed in this LOD (≥ 1).
int	Highest Vertex index referenced in this LOD (≥ 0).

PatchHeader:

Type	Value
byte[8]	Reserved for future use.
int	0 if this is a triangle strip Patch, 1 if this is a point cloud Patch.
int	ViSTa file index of the TextureRef that identifies the texture image to use for geometry in this patch (≥ 0).
int	Number of Index arrays in the patch (≥ 1).
int	Total number of Index listed in the patch (≥ 3 for triangle strip patches, ≥ 1 for point cloud patches).

IndexArrayLength:

Type	Value
int	The number of Index fields in the corresponding Index array (≥ 3 for Index arrays in triangle strip Patches; ≥ 1 for Index arrays in point cloud Patches).

Struttura di Index: Type Value int An index into the array of Vertex (≥ 0)