struct Head {
	char8_t  ResMagic[4];    // "GR01"
	char8_t  ResClass[4];    // "IM04"
	uint32_t PropOffset;
	uint32_t PropLength;
	uint32_t DataOffset;
	uint32_t DataLength;
	uint64_t RawDateTime;    // (FILETIME)
	char8_t  RawFileExt[8];  // ".dds", ".png", ".tga"
}
// @Head.PropOffset
class Prop {
	// eCImageResource2 with Width(int), Height(int), SkipMips(long),
	// and PixelFormat(bTPropertyContainer<enum eCGfxShared::eEColorFormat>)
	uint8_t Buffer[Head.PropLength];
}
// @Head.DataOffset
class Data {
	uint8_t Surface[Head.DataLength];  // "DDS " + DDSURFACEDESC2
	// Xbox 360: "X360T", header, big-endian texel (tiled format)
}