VTFX file format

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VTFx is a file format used by Valve to store textures on the Xbox 360. It has a different header from normal VTF files and stores it's data in a compressed DirectDraw Surface. Conversion or reading from a VTFX file is not possible at this time. Compression seems to be varied depending on what game is using the vtfx

VTFX file format

VTFX header

typedef struct tagVTFXHEADER  
{
	char fileTypeString[4];         // VTFX.
	int version[2]; 		// version[0].version[1].
	int headerSize;
	unsigned int	flags;
	unsigned short	width;					// actual width of data in file.
	unsigned short	height;					// actual height of data in file.
	unsigned short	depth;					// actual depth of data in file.
	unsigned short	numFrames;
	unsigned short	preloadDataSize;		// exact size of preload data (may extend into image!).
	unsigned char	mipSkipCount;			// used to resconstruct mapping dimensions.
	unsigned char	numResources;
	Vector			reflectivity;			// Resides on 16 byte boundary!.
	float			bumpScale;
	ImageFormat		imageFormat;
	unsigned char	lowResImageSample[4];
	unsigned int	compressedSize;

	// *** followed by *** ResourceEntryInfo resources[0];
} VTFXHEADER;
#define VTF_X360_MAJOR_VERSION	0x0360
#define VTF_X360_MINOR_VERSION	8

ResourceEntryInfo Info

VTF_LEGACY_RSRC_LOW_RES_IMAGE = MK_VTF_RSRC_ID( 0x01, 0, 0 ), // Low-res image data VTF_LEGACY_RSRC_IMAGE = MK_VTF_RSRC_ID( 0x30, 0, 0 ), // Image data VTF_RSRC_SHEET = MK_VTF_RSRC_ID( 0x10, 0, 0 ), // Sheet data RSRCF_HAS_NO_DATA_CHUNK = MK_VTF_RSRCF( 0x02 ), // Resource doesn't have a corresponding data chunk RSRCF_MASK = MK_VTF_RSRCF( 0xFF ) // Mask for all the flags

1. define VTF_RSRC_TEXTURE_CRC ( MK_VTF_RSRC_ID( 'C','R','C' ) ) //CRC Checksum?
2. define VTF_RSRC_TEXTURE_SETTINGS_EX ( MK_VTF_RSRC_ID( 'T','S','0' ) ) //TextureSettingsEx_t
3. define VTF_RSRC_TEXTURE_LOD_SETTINGS ( MK_VTF_RSRC_ID( 'L','O','D' ) ) //TextureLODControlSettings_t

struct ResourceEntryInfo { union { unsigned int eType; // Use MK_VTF_??? macros to be endian compliant with the type unsigned char chTypeBytes[4]; }; unsigned int resData; // Resource data or offset from the beginning of the file };