The PVR file is an custom PowerVR image format for the Sega Dreamcast.
GBIX
The GBIX (Global Index) section is optional and not always present.
- The Global Index is a unique number that is assigned to all textures.
- Texture duplication is checked by comparing the Global Index numbers.
- The Global Index is stored in a texture file.
| Position |
Length |
Type |
Description
|
| 0x00 |
0x04 |
string |
Identifier (GBIX)
|
| 0x04 |
0x04 |
uint |
Size in bytes
|
| 0x08 |
0x0? |
uint |
Global indices
|
PVRT
| Position |
Length |
Type |
Description
|
| 0x00 |
0x04 |
string |
Identifier (PVRT)
|
| 0x04 |
0x04 |
uint |
Size in bytes of PVR file after this
|
| 0x08 |
0x01 |
byte |
Pixel format
|
| 0x09 |
0x01 |
byte |
Data format
|
| 0x0A |
0x02 |
? |
Reserved
|
| 0x0C |
0x02 |
ushort |
Image width
|
| 0x0E |
0x02 |
ushort |
Image height
|
Pixel formats
| Value |
Description
|
| 0x01 |
ARGB1555
|
| 0x02 |
RGB565
|
| 0x03 |
ARGB4444
|
| 0x04 |
YUV442
|
| 0x05 |
Bump
|
| 0x06 |
Bit4
|
| 0x07 |
Bit8
|
| 0x80 |
DDS_RGB24
|
| 0x81 |
DDS_RGBA32
|
Data formats
| Value |
Description
|
| 0x01 |
SQUARE_TWIDDLED
|
| 0x02 |
SQUARE_TWIDDLED_MIPMAP
|
| 0x03 |
VQ
|
| 0x04 |
VQ_MIPMAP
|
| 0x05 |
CLUT_TWIDDLED_8BIT
|
| 0x06 |
CLUT_TWIDDLED_4BIT
|
| 0x07 |
DIRECT_TWIDDLED_8BIT
|
| 0x08 |
DIRECT_TWIDDLED_4BIT
|
| 0x09 |
RECTANGLE
|
| 0x0B |
RECTANGULAR_STRIDE
|
| 0x0D |
RECTANGULAR_TWIDDLED
|
| 0x10 |
SMALL_VQ
|
| 0x11 |
SMALL_VQ_MIPMAP
|
| 0x12 |
SQUARE_TWIDDLED_MIPMAP_2
|