Difference between revisions of "FF8/FileFormat X"

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my_wiki>Shard
m (Undo revision 4872 by Shard (talk))
my_wiki>MaKiPL
(→‎Quad: Added texture page + OP instruction)
Line 226: Line 226:
 
| V of first texture coordinate
 
| V of first texture coordinate
 
|-
 
|-
−
| Texture related
+
| OP
−
| 2 bytes
+
| Byte
−
| Texture related (?)
+
| Opacity / Alpha channel blend
 +
|-
 +
| Unknown
 +
| Byte
 +
| PSOne GPU related?
 
|-
 
|-
 
| U2
 
| U2
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| V of second texture coordinate
 
| V of second texture coordinate
 
|-
 
|-
−
| Texture related
+
| Special (see below)
−
| 2 bytes
+
| 8 Byte
−
| Texture related (?)
+
| See below (after table)
 +
|-
 +
| Hide
 +
| Byte/Bool
 +
| Bool. Hides or shows texture
 
|-
 
|-
 
| U3
 
| U3
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| Texture colourization (Blue)
 
| Texture colourization (Blue)
 
|-
 
|-
−
| Texture ID
+
| PSone GPU related
 
| Byte
 
| Byte
−
| Texture ID
+
| PSOne instruction
 +
|}
 +
 
 +
Special Byte:
 +
This byte, needs to be divided to two bytes. So, for example, a 0xE5 needs to be treated like two bytes:
 +
0x0E
 +
0x05
 +
Other way is to treat first one as 6 BIT's, and second one as 2 BIT.
 +
 
 +
{| border="1" cellspacing="1" cellpadding="3" align="center" style="border: 1px solid black; border-collapse: collapse;"
 +
! style="background:rgb(204,204,204)" | Singular of char
 +
! style="background:rgb(204,204,204)" | Example
 +
! style="background:rgb(204,204,204)" | Description
 +
|-
 +
| First char/ 6 BIT's
 +
| B2 --> 0B
 +
| Unknown
 +
|-
 +
| Second char / 2 BIT
 +
| B2 --> 02
 +
| Texture page number.
 
|}
 
|}
  

Revision as of 11:15, 6 March 2015

By MaKiPL. Thanks for help in research for: shakotay2 (XeNTaX), Halfer, Yagami Light.

Info

.X file is uncompressed 3D stage model with texture embedeed. The file contains basic info (currently unknown, probably for editor?), camera data, movement, translations and geometry data.

Name Usually starting with: Description
Info/Script E8 FF BD 27 01 00 02 Currently unknown. Probably header + info, that is not needed in game itself. Can be null'ied and nothing will happen ingame.
Camera data + movement 02 00 08 00 20 00 (usually 0x5d4/8) Camera animations, movement (pre-keyed)
Geometry 01 00 00 00 08 (See geometry section info) Divides to object and it's sub-objects
Texture 01 00 00 00 09 (Always) Contains one .TIM texture

Info/Script

Currently unknown, takes up to ~1400 bytes from start. Unused in-game. Can be null'ied and nothing happen.

Camera data

Offset Length Description
0 2 bytes Number of cameras
2 2 bytes Number of camera animations?
?? / Camera data Varies Currently unknown

Camera data contains:

  1. Prekeyed camera movement
  2. Camera zoom
  3. Camera FOV (horizontal and vertical)
  4. Orthogenical projection
  5. Rotation
  6. Special effects like earthquake
  7. More, unknown?

This file does not contain camera animations for victory, summons and etc.

Geometry

Geometry contains groups, that contains objects. Ground plane is always 1 object, so it's easy to find geometry data by searching for "Usually starting" header as seen in info section. The group contains objects and location to every start of object

Group

Offset Length Description
0 4 bytes Number of objects in group
4 4 bytes Position of object 1
8 / varies 4 bytes Position of next objects, if number of objects != 1

Object

Offset Length Description
0 4 bytes Always 01 00 01 00 / Header of object
4 2 bytes Uint16 / number of vertices.
6 Number of vertices * 6 Vertex data, short X; short Y; short Z;
6 + (Number of vertices *6) (AbsolutePosition MOD 4) + 2 Padding
varies (just after above) 2 bytes uint16 / number of triangles
varies (just after above) 2 bytes uint16 / number of quads
varies (just after above) 4 bytes padding
varies (just after above) number of triangles * 20 Triangle data. If NumOfTriangles = 0, then instead of any triangle data, there's quad data.
varies (just after above) number of quads * 24 Triangle data. If NumOfQuads = 0, then instead of any quad data, there's either next header 01 00 01 00, or end of group.
Triangle
Name Type Description
F1 (A) uint16 A of face indice
F2 (B) uint16 B of face indice
F3 (C) uint16 C of face indice
U1 Byte U of first texture coordinate
V1 Byte V of first texture coordinate
U2 Byte U of second texture coordinate
V2 Byte V of second texture coordinate
Texture related 2 bytes Texture related (?)
U3 Byte U of third texture coordinate
V3 Byte V of third texture coordinate
Texture related 2 bytes Texture related (?)
Red Byte Texture colourization (Red)
Green Byte Texture colourization (Green)
Blue Byte Texture colourization (Blue)
Texture ID Byte Texture ID
Quad
Name Type Description
F1 (A) uint16 A of face indice
F2 (B) uint16 B of face indice
F3 (C) uint16 C of face indice
F4 (D) uint16 D of face indice
U1 Byte U of first texture coordinate
V1 Byte V of first texture coordinate
OP Byte Opacity / Alpha channel blend
Unknown Byte PSOne GPU related?
U2 Byte U of second texture coordinate
V2 Byte V of second texture coordinate
Special (see below) 8 Byte See below (after table)
Hide Byte/Bool Bool. Hides or shows texture
U3 Byte U of third texture coordinate
V3 Byte V of third texture coordinate
U4 Byte U of fourth texture coordinate
V4 Byte V of fourth texture coordinate
Red Byte Texture colourization (Red)
Green Byte Texture colourization (Green)
Blue Byte Texture colourization (Blue)
PSone GPU related Byte PSOne instruction

Special Byte: This byte, needs to be divided to two bytes. So, for example, a 0xE5 needs to be treated like two bytes: 0x0E 0x05 Other way is to treat first one as 6 BIT's, and second one as 2 BIT.

Singular of char Example Description
First char/ 6 BIT's B2 --> 0B Unknown
Second char / 2 BIT B2 --> 02 Texture page number.

Texture

Contains one TIMs with various size 512x256, 673x256, 768x256 (8BPP).

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