mat spec.txt

// MAT header
// NOTE: the RGB shift and/or RGB bits values may be in an incorrect order. JKSpecs reports these fields as
// unknown values. BoBo Fett's mat-16 specification has these values listed in conflicting order (they don't match up with the comments, even)

// from shiny
/*typedef struct rdTexformat
{
    uint32_t is16bit;
    uint32_t bpp;
    uint32_t r_bits;
    uint32_t g_bits;
    uint32_t b_bits;
    uint32_t r_shift;
    uint32_t g_shift;
    uint32_t b_shift;
    uint32_t r_bitdiff;
    uint32_t g_bitdiff;
    uint32_t b_bitdiff;
    uint32_t unk_40;
    uint32_t unk_44;
    uint32_t unk_48;
} rdTexformat;*/

// from shiny
// MAT header  "type"   actually  specifies   type & 0x01   =   includes own palette dump at end of file

struct tMAT_Header
{
	char verification[4];		// 'MAT '
	long version;				// version of material.   should be 0x32
	long type;					// type of material.  0 = color       1 = ?         2 = texture
	long numMaterials;			// number of materials contained in material file
	long numTextures;			// number of textures. in color materials, this is 0. in texture materials, this is equal to numMaterials
	long unknown0;				// JKSpecs says this is 0.  BoBo Fett's mat-16 spec says this is 1
	long colorBits;				// number of bits per pixel
	long blueBits;				// number of blue bits per pixel (could this be red?)
	long greenBits;				// number of green bits per pixel
	long redBits;				// number of red bits per pixel (could this be blue?)
	long blueShiftL;			// blue left shift
	long greenShiftL;			// green left shift
	long redShiftL;				// red left shift
	long blueShiftR;			// blue right shift
	long greenShiftR;			// green right shift
	long redShiftR;				// red right shift
	char unknown1[12];			// unknown/unused bytes
};

// Texture material header
struct tMAT_TextureHeader
{
	long unknown0;				// unknown	( BoBo Fett reports this as being 0 )
	long unknown1;				// unknown  ( BoBo Fett reports this as being 4 )
	long unknown2;				// unknown  ( JKSpecs reports this as being 0xBFF78482, BoBo Fett reports this as being 4 )
	long textureId;				// current texture ID, starting at 0 up to numTextures - 1
};

// Material entry header
struct tMAT_MaterialHeader
{
	long type;					// type of material entry (0 = color    8 = texture)
	long colorIndex;			// for color materials, this is the palette entry in CMP for the material color. for textures, this is RGB of transparency value
	long unknown[4];			// unknown/unused bytes   ( JKSpecs reports these are all 0x3F800000 )
	struct tMAT_TextureHeader *textureHeader;		// pointer to texture header (NULL for color materials)
};

// Texture material data
struct tMAT_TextureData
{
	long width;					// width of texture
	long height;				// height of texture
	long transparent;			// bool to indictate using transparency
	long unknown[2];			// unknown/unused bytes
	long numMipmaps;			// number of mipmaps for texture
	void **pData;				// actual bitmap data (array of pointers to bytes, numMipmaps large)
};

// MAT data format
struct tMAT_Data
{
	struct tMAT_Header header;							// MAT file header
	struct tMAT_MaterialHeader *materialHeaders;		// material headers			(array of size numMaterials)
	struct tMAT_TextureData *textureData;				// texture datas			(array of size numTextures)
};