//
//  Binary Image Map (*.BI?)
//  (BlockSize: 0x00004000, CoderKey: 0x00000F7E)
//
//  NOTE: These files are only used by the PowerVR binaries.
//  NOTE: Only *.BI2 (never saw a file with another version)
//
struct Header
{
	uint32_t FileSize;
	uint32_t OffsetCount;               // 0x00000001
	uint32_t OffsetTable[OffsetCount];  // 0x0000000C (not used)
}
struct Name  // "IMAP"
{
	uint8_t Length;
	uint8_t Buffer[Length];  // Coder: [i] ^= ~i
}
uint32_t Width;
uint32_t Height;
uint32_t Image[Height][Width];  // RGBT8888
//
// I don’t know the transparency table/logic, but inverting the transparency
// byte results in reasonable alpha values. Note that the image bytes of the
// "shadotin.bi2" (and probably the unused "pvrshado.bi2") are moved with an
// offset of one byte into the texture buffer. Since these images are filled
// with opaque gray pixels, this results in a half-transparent teal texture.
// However, all this pixel/image interpretation is mere guess work, and it’s
// (nowadays) hard to get your hands on PowerVR hardware or documentation...
//