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Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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source-engine/public/vtf/vtf.h

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//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//===========================================================================//
#ifndef VTF_H
#define VTF_H
#ifdef _WIN32
#pragma once
#endif
#include "bitmap/imageformat.h"
#include "tier0/platform.h"
// #define VTF_FILE_FORMAT_ONLY to just include the vtf header and none of the code declaration
#ifndef VTF_FILE_FORMAT_ONLY
//-----------------------------------------------------------------------------
// Forward declarations
//-----------------------------------------------------------------------------
class CUtlBuffer;
class Vector;
struct Rect_t;
class IFileSystem;
//-----------------------------------------------------------------------------
// Texture flags
//-----------------------------------------------------------------------------
enum CompiledVtfFlags
{
// flags from the *.txt config file
TEXTUREFLAGS_POINTSAMPLE = 0x00000001,
TEXTUREFLAGS_TRILINEAR = 0x00000002,
TEXTUREFLAGS_CLAMPS = 0x00000004,
TEXTUREFLAGS_CLAMPT = 0x00000008,
TEXTUREFLAGS_ANISOTROPIC = 0x00000010,
TEXTUREFLAGS_HINT_DXT5 = 0x00000020,
TEXTUREFLAGS_SRGB = 0x00000040,
TEXTUREFLAGS_NORMAL = 0x00000080,
TEXTUREFLAGS_NOMIP = 0x00000100,
TEXTUREFLAGS_NOLOD = 0x00000200,
TEXTUREFLAGS_ALL_MIPS = 0x00000400,
TEXTUREFLAGS_PROCEDURAL = 0x00000800,
// These are automatically generated by vtex from the texture data.
TEXTUREFLAGS_ONEBITALPHA = 0x00001000,
TEXTUREFLAGS_EIGHTBITALPHA = 0x00002000,
// newer flags from the *.txt config file
TEXTUREFLAGS_ENVMAP = 0x00004000,
TEXTUREFLAGS_RENDERTARGET = 0x00008000,
TEXTUREFLAGS_DEPTHRENDERTARGET = 0x00010000,
TEXTUREFLAGS_NODEBUGOVERRIDE = 0x00020000,
TEXTUREFLAGS_SINGLECOPY = 0x00040000,
TEXTUREFLAGS_STAGING_MEMORY = 0x00080000,
TEXTUREFLAGS_IMMEDIATE_CLEANUP = 0x00100000,
TEXTUREFLAGS_IGNORE_PICMIP = 0x00200000,
TEXTUREFLAGS_UNUSED_00400000 = 0x00400000,
TEXTUREFLAGS_NODEPTHBUFFER = 0x00800000,
TEXTUREFLAGS_UNUSED_01000000 = 0x01000000,
TEXTUREFLAGS_CLAMPU = 0x02000000,
TEXTUREFLAGS_VERTEXTEXTURE = 0x04000000, // Useable as a vertex texture
TEXTUREFLAGS_SSBUMP = 0x08000000,
TEXTUREFLAGS_UNUSED_10000000 = 0x10000000,
// Clamp to border color on all texture coordinates
TEXTUREFLAGS_BORDER = 0x20000000,
TEXTUREFLAGS_STREAMABLE_COARSE = 0x40000000,
TEXTUREFLAGS_STREAMABLE_FINE = 0x80000000,
TEXTUREFLAGS_STREAMABLE = ( TEXTUREFLAGS_STREAMABLE_COARSE | TEXTUREFLAGS_STREAMABLE_FINE )
};
enum VersionedVtfFlags
{
VERSIONED_VTF_FLAGS_MASK_7_3 = ~0xD1780400, // For a ver 7.3 or earlier only these flags are valid
};
struct VtfProcessingOptions
{
uint32 cbSize; // Set to sizeof( VtfProcessingOptions )
//
// Flags0
//
enum Flags0
{
// Have a channel decaying to a given decay goal for the given last number of mips
OPT_DECAY_R = 0x00000001, // Red decays
OPT_DECAY_G = 0x00000002, // Green decays
OPT_DECAY_B = 0x00000004, // Blue decays
OPT_DECAY_A = 0x00000008, // Alpha decays
OPT_DECAY_EXP_R = 0x00000010, // Channel R decays exponentially (otherwise linearly)
OPT_DECAY_EXP_G = 0x00000020, // Channel G decays exponentially (otherwise linearly)
OPT_DECAY_EXP_B = 0x00000040, // Channel B decays exponentially (otherwise linearly)
OPT_DECAY_EXP_A = 0x00000080, // Channel A decays exponentially (otherwise linearly)
OPT_NOCOMPRESS = 0x00000100, // Use uncompressed image format
OPT_NORMAL_DUDV = 0x00000200, // dU dV normal map
OPT_FILTER_NICE = 0x00000400, // Use nice filtering
OPT_SET_ALPHA_ONEOVERMIP = 0x00001000, // Alpha = 1/miplevel
OPT_PREMULT_COLOR_ONEOVERMIP = 0x00002000, // Color *= 1/miplevel
OPT_MIP_ALPHATEST = 0x00004000, // Alpha-tested mip generation
};
uint32 flags0; // A combination of "Flags0"
//
// Decay settings
//
uint8 clrDecayGoal[4]; // Goal colors for R G B A
uint8 numNotDecayMips[4]; // Number of first mips unaffected by decay (0 means all below mip0)
float fDecayExponentBase[4]; // For exponential decay the base number (e.g. 0.75)
};
//-----------------------------------------------------------------------------
// Cubemap face indices
//-----------------------------------------------------------------------------
enum CubeMapFaceIndex_t
{
CUBEMAP_FACE_RIGHT = 0,
CUBEMAP_FACE_LEFT,
CUBEMAP_FACE_BACK, // NOTE: This face is in the +y direction?!?!?
CUBEMAP_FACE_FRONT, // NOTE: This face is in the -y direction!?!?
CUBEMAP_FACE_UP,
CUBEMAP_FACE_DOWN,
// This is the fallback for low-end
CUBEMAP_FACE_SPHEREMAP,
// NOTE: Cubemaps have *7* faces; the 7th is the fallback spheremap
CUBEMAP_FACE_COUNT
};
//-----------------------------------------------------------------------------
// Enumeration used for spheremap generation
//-----------------------------------------------------------------------------
enum LookDir_t
{
LOOK_DOWN_X = 0,
LOOK_DOWN_NEGX,
LOOK_DOWN_Y,
LOOK_DOWN_NEGY,
LOOK_DOWN_Z,
LOOK_DOWN_NEGZ,
};
//-----------------------------------------------------------------------------
// What mipmap (and coarser) is always available when we ship
//-----------------------------------------------------------------------------
#define STREAMING_START_MIPMAP 3
//-----------------------------------------------------------------------------
// Use this image format if you want to perform tool operations on the texture
//-----------------------------------------------------------------------------
#define IMAGE_FORMAT_DEFAULT ((ImageFormat)-2)
//-----------------------------------------------------------------------------
// Interface to get at various bits of a VTF texture
//-----------------------------------------------------------------------------
class IVTFTexture
{
public:
virtual ~IVTFTexture() {}
// Initializes the texture and allocates space for the bits
// In most cases, you shouldn't force the mip count.
virtual bool Init( int nWidth, int nHeight, int nDepth, ImageFormat fmt, int nFlags, int iFrameCount, int nForceMipCount = -1 ) = 0;
// Methods to set other texture fields
virtual void SetBumpScale( float flScale ) = 0;
virtual void SetReflectivity( const Vector &vecReflectivity ) = 0;
// Methods to initialize the low-res image
virtual void InitLowResImage( int nWidth, int nHeight, ImageFormat fmt ) = 0;
// set the resource data (for writers). pass size=0 to delete data. if pdata is not null,
// the resource data will be copied from *pData
virtual void *SetResourceData( uint32 eType, void const *pData, size_t nDataSize ) = 0;
// find the resource data and return a pointer to it. The data pointed to by this pointer will
// go away when the ivtftexture does. retruns null if resource not present
virtual void *GetResourceData( uint32 eType, size_t *pDataSize ) const = 0;
// Locates the resource entry info if it's present, easier than crawling array types
virtual bool HasResourceEntry( uint32 eType ) const = 0;
// Retrieve available resource types of this IVTFTextures
// arrTypesBuffer buffer to be filled with resource types available.
// numTypesBufferElems how many resource types the buffer can accomodate.
// Returns:
// number of resource types available (can be greater than "numTypesBufferElems"
// in which case only first "numTypesBufferElems" are copied to "arrTypesBuffer")
virtual unsigned int GetResourceTypes( uint32 *arrTypesBuffer, int numTypesBufferElems ) const = 0;
// When unserializing, we can skip a certain number of mip levels,
// and we also can just load everything but the image data
// NOTE: If you load only the buffer header, you'll need to use the
// VTFBufferHeaderSize() method below to only read that much from the file
// NOTE: If you skip mip levels, the height + width of the texture will
// change to reflect the size of the largest read in mip level
virtual bool Unserialize( CUtlBuffer &buf, bool bHeaderOnly = false, int nSkipMipLevels = 0 ) = 0;
virtual bool Serialize( CUtlBuffer &buf ) = 0;
// These are methods to help with optimization:
// Once the header is read in, they indicate where to start reading
// other data (measured from file start), and how many bytes to read....
virtual void LowResFileInfo( int *pStartLocation, int *pSizeInBytes) const = 0;
virtual void ImageFileInfo( int nFrame, int nFace, int nMip, int *pStartLocation, int *pSizeInBytes) const = 0;
virtual int FileSize( int nMipSkipCount = 0 ) const = 0;
// Attributes...
virtual int Width() const = 0;
virtual int Height() const = 0;
virtual int Depth() const = 0;
virtual int MipCount() const = 0;
// returns the size of one row of a particular mip level
virtual int RowSizeInBytes( int nMipLevel ) const = 0;
// returns the size of one face of a particular mip level
virtual int FaceSizeInBytes( int nMipLevel ) const = 0;
virtual ImageFormat Format() const = 0;
virtual int FaceCount() const = 0;
virtual int FrameCount() const = 0;
virtual int Flags() const = 0;
virtual float BumpScale() const = 0;
virtual int LowResWidth() const = 0;
virtual int LowResHeight() const = 0;
virtual ImageFormat LowResFormat() const = 0;
// NOTE: reflectivity[0] = blue, [1] = greem, [2] = red
virtual const Vector &Reflectivity() const = 0;
virtual bool IsCubeMap() const = 0;
virtual bool IsNormalMap() const = 0;
virtual bool IsVolumeTexture() const = 0;
// Computes the dimensions of a particular mip level
virtual void ComputeMipLevelDimensions( int iMipLevel, int *pMipWidth, int *pMipHeight, int *pMipDepth ) const = 0;
// Computes the size (in bytes) of a single mipmap of a single face of a single frame
virtual int ComputeMipSize( int iMipLevel ) const = 0;
// Computes the size of a subrect (specified at the top mip level) at a particular lower mip level
virtual void ComputeMipLevelSubRect( Rect_t* pSrcRect, int nMipLevel, Rect_t *pSubRect ) const = 0;
// Computes the size (in bytes) of a single face of a single frame
// All mip levels starting at the specified mip level are included
virtual int ComputeFaceSize( int iStartingMipLevel = 0 ) const = 0;
// Computes the total size (in bytes) of all faces, all frames
virtual int ComputeTotalSize() const = 0;
// Returns the base address of the image data
virtual unsigned char *ImageData() = 0;
// Returns a pointer to the data associated with a particular frame, face, and mip level
virtual unsigned char *ImageData( int iFrame, int iFace, int iMipLevel ) = 0;
// Returns a pointer to the data associated with a particular frame, face, mip level, and offset
virtual unsigned char *ImageData( int iFrame, int iFace, int iMipLevel, int x, int y, int z = 0 ) = 0;
// Returns the base address of the low-res image data
virtual unsigned char *LowResImageData() = 0;
// Converts the textures image format. Use IMAGE_FORMAT_DEFAULT
// if you want to be able to use various tool functions below
virtual void ConvertImageFormat( ImageFormat fmt, bool bNormalToDUDV ) = 0;
// NOTE: The following methods only work on textures using the
// IMAGE_FORMAT_DEFAULT!
// Generate spheremap based on the current cube faces (only works for cubemaps)
// The look dir indicates the direction of the center of the sphere
// NOTE: Only call this *after* cube faces have been correctly
// oriented (using FixCubemapFaceOrientation)
virtual void GenerateSpheremap( LookDir_t lookDir = LOOK_DOWN_Z ) = 0;
// Generate spheremap based on the current cube faces (only works for cubemaps)
// The look dir indicates the direction of the center of the sphere
// NOTE: Only call this *after* cube faces have been correctly
// oriented (using FixCubemapFaceOrientation)
virtual void GenerateHemisphereMap( unsigned char *pSphereMapBitsRGBA, int targetWidth,
int targetHeight, LookDir_t lookDir, int iFrame ) = 0;
// Fixes the cubemap faces orientation from our standard to the
// standard the material system needs.
virtual void FixCubemapFaceOrientation( ) = 0;
// Generates mipmaps from the base mip levels
virtual void GenerateMipmaps() = 0;
// Put 1/miplevel (1..n) into alpha.
virtual void PutOneOverMipLevelInAlpha() = 0;
// Computes the reflectivity
virtual void ComputeReflectivity( ) = 0;
// Computes the alpha flags
virtual void ComputeAlphaFlags() = 0;
// Generate the low-res image bits
virtual bool ConstructLowResImage() = 0;
// Gets the texture all internally consistent assuming you've loaded
// mip 0 of all faces of all frames
virtual void PostProcess(bool bGenerateSpheremap, LookDir_t lookDir = LOOK_DOWN_Z, bool bAllowFixCubemapOrientation = true) = 0;
// Blends adjacent pixels on cubemap borders, since the card doesn't do it. If the texture
// is S3TC compressed, then it has to do it AFTER the texture has been compressed to prevent
// artifacts along the edges.
//
// If bSkybox is true, it assumes the faces are oriented in the way the engine draws the skybox
// (which happens to be different from the way cubemaps have their faces).
virtual void MatchCubeMapBorders( int iStage, ImageFormat finalFormat, bool bSkybox ) = 0;
// Sets threshhold values for alphatest mipmapping
virtual void SetAlphaTestThreshholds( float flBase, float flHighFreq ) = 0;
#if defined( _X360 )
virtual int UpdateOrCreate( const char *pFilename, const char *pPathID = NULL, bool bForce = false ) = 0;
virtual bool UnserializeFromBuffer( CUtlBuffer &buf, bool bBufferIsVolatile, bool bHeaderOnly, bool bPreloadOnly, int nMipSkipCount ) = 0;
virtual int FileSize( bool bPreloadOnly, int nMipSkipCount ) const = 0;
virtual int MappingWidth() const = 0;
virtual int MappingHeight() const = 0;
virtual int MappingDepth() const = 0;
virtual int MipSkipCount() const = 0;
virtual bool IsPreTiled() const = 0;
virtual unsigned char *LowResImageSample() = 0;
virtual void ReleaseImageMemory() = 0;
#endif
// Sets post-processing flags (settings are copied, pointer passed to distinguish between structure versions)
virtual void SetPostProcessingSettings( VtfProcessingOptions const *pOptions ) = 0;
// Like Unserialize, but allows you to additionally specify some flags to forcibly enable.
virtual bool UnserializeEx( CUtlBuffer &buf, bool bHeaderOnly = false, int nForceFlags = 0, int nSkipMipLevels = 0 ) = 0;
// Data is included in [ finest, coarsest ] mips--other ranges have garbage. This is particularly useful for
// streaming textures.
virtual void GetMipmapRange( int* pOutFinest, int* pOutCoarsest ) = 0;
};
//-----------------------------------------------------------------------------
// Class factory
//-----------------------------------------------------------------------------
IVTFTexture *CreateVTFTexture();
void DestroyVTFTexture( IVTFTexture *pTexture );
//-----------------------------------------------------------------------------
// Allows us to only load in the first little bit of the VTF file to get info
// Clients should read this much into a UtlBuffer and then pass it in to
// Unserialize
//-----------------------------------------------------------------------------
int VTFFileHeaderSize( int nMajorVersion = -1, int nMinorVersion = -1 );
//-----------------------------------------------------------------------------
// 360 Conversion
//-----------------------------------------------------------------------------
typedef bool (*CompressFunc_t)( CUtlBuffer &inputBuffer, CUtlBuffer &outputBuffer );
bool ConvertVTFTo360Format( const char *pDebugName, CUtlBuffer &sourceBuf, CUtlBuffer &targetBuf, CompressFunc_t pCompressFunc );
//-----------------------------------------------------------------------------
// 360 Preload
//-----------------------------------------------------------------------------
bool GetVTFPreload360Data( const char *pDebugName, CUtlBuffer &fileBufferIn, CUtlBuffer &preloadBufferOut );
#include "mathlib/vector.h"
#endif // VTF_FILE_FORMAT_ONLY
//-----------------------------------------------------------------------------
// Disk format for VTF files ver. 7.2 and earlier
//
// NOTE: After the header is the low-res image data
// Then follows image data, which is sorted in the following manner
//
// for each mip level (starting with 1x1, and getting larger)
// for each animation frame
// for each face
// store the image data for the face
//
// NOTE: In memory, we store the data in the following manner:
// for each animation frame
// for each face
// for each mip level (starting with the largest, and getting smaller)
// store the image data for the face
//
// This is done because the various image manipulation function we have
// expect this format
//-----------------------------------------------------------------------------
// Disk format for VTF files ver. 7.3
//
// NOTE: After the header is the array of ResourceEntryInfo structures,
// number of elements in the array is defined by "numResources".
// there are entries for:
// eRsrcLowResImage = low-res image data
// eRsrcSheet = sheet data
// eRsrcImage = image data
// {
// for each mip level (starting with 1x1, and getting larger)
// for each animation frame
// for each face
// store the image data for the face
//
// NOTE: In memory, we store the data in the following manner:
// for each animation frame
// for each face
// for each mip level (starting with the largest, and getting smaller)
// store the image data for the face
// }
//
//-----------------------------------------------------------------------------
#include "datamap.h"
#pragma pack(1)
// version number for the disk texture cache
#define VTF_MAJOR_VERSION 7
#define VTF_MINOR_VERSION 4
//-----------------------------------------------------------------------------
// !!!!CRITICAL!!!! BEFORE YOU CHANGE THE FORMAT
//
// The structure sizes ARE NOT what they appear, regardless of Pack(1).
// The "VectorAligned" causes invisible padding in the FINAL derived structure.
//
// Each VTF format has been silently plagued by this.
//
// LOOK AT A 7.3 FILE. The 7.3 structure ends at 0x48 as you would expect by
// counting structure bytes. But, the "Infos" start at 0x50! because the PC
// compiler pads, the 360 compiler does NOT.
//-----------------------------------------------------------------------------
struct VTFFileBaseHeader_t
{
DECLARE_BYTESWAP_DATADESC();
char fileTypeString[4]; // "VTF" Valve texture file
int version[2]; // version[0].version[1]
int headerSize;
};
struct VTFFileHeaderV7_1_t : public VTFFileBaseHeader_t
{
DECLARE_BYTESWAP_DATADESC();
unsigned short width;
unsigned short height;
unsigned int flags;
unsigned short numFrames;
unsigned short startFrame;
#if !defined( POSIX ) && !defined( _X360 )
VectorAligned reflectivity;
#else
// must manually align in order to maintain pack(1) expected layout with existing binaries
char pad1[4];
Vector reflectivity;
char pad2[4];
#endif
float bumpScale;
ImageFormat imageFormat;
unsigned char numMipLevels;
ImageFormat lowResImageFormat;
unsigned char lowResImageWidth;
unsigned char lowResImageHeight;
};
struct VTFFileHeaderV7_2_t : public VTFFileHeaderV7_1_t
{
DECLARE_BYTESWAP_DATADESC();
unsigned short depth;
};
#define BYTE_POS( byteVal, shft ) uint32( uint32(uint8(byteVal)) << uint8(shft * 8) )
#if !defined( _X360 )
#define MK_VTF_RSRC_ID(a, b, c) uint32( BYTE_POS(a, 0) | BYTE_POS(b, 1) | BYTE_POS(c, 2) )
#define MK_VTF_RSRCF(d) BYTE_POS(d, 3)
#else
#define MK_VTF_RSRC_ID(a, b, c) uint32( BYTE_POS(a, 3) | BYTE_POS(b, 2) | BYTE_POS(c, 1) )
#define MK_VTF_RSRCF(d) BYTE_POS(d, 0)
#endif
// Special section for stock resources types
enum ResourceEntryType
{
// Legacy stock resources, readin/writing are handled differently (i.e. they do not have the length tag word!)
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
// New extended resource
VTF_RSRC_SHEET = MK_VTF_RSRC_ID( 0x10, 0, 0 ), // Sheet data
};
// Bytes with special meaning when set in a resource type
enum ResourceEntryTypeFlag
{
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
};
// Header details constants
enum HeaderDetails
{
MAX_RSRC_DICTIONARY_ENTRIES = 32, // Max number of resources in dictionary
MAX_X360_RSRC_DICTIONARY_ENTRIES = 4, // 360 needs this to be slim, otherwise preload size suffers
};
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
};
struct VTFFileHeaderV7_3_t : public VTFFileHeaderV7_2_t
{
DECLARE_BYTESWAP_DATADESC();
char pad4[3];
unsigned int numResources;
#if defined( _X360 ) || defined( POSIX )
// must manually align in order to maintain pack(1) expected layout with existing binaries
char pad5[8];
#endif
// AFTER THE IMPLICIT PADDING CAUSED BY THE COMPILER....
// *** followed by *** ResourceEntryInfo resources[0];
// Array of resource entry infos sorted ascending by type
};
struct VTFFileHeader_t : public VTFFileHeaderV7_3_t
{
DECLARE_BYTESWAP_DATADESC();
};
#define VTF_X360_MAJOR_VERSION 0x0360
#define VTF_X360_MINOR_VERSION 8
struct VTFFileHeaderX360_t : public VTFFileBaseHeader_t
{
DECLARE_BYTESWAP_DATADESC();
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];
};
///////////////////////////
// Resource Extensions //
///////////////////////////
// extended texture lod control:
#define VTF_RSRC_TEXTURE_LOD_SETTINGS ( MK_VTF_RSRC_ID( 'L','O','D' ) )
struct TextureLODControlSettings_t
{
// What to clamp the dimenstions to, mip-map wise, when at picmip 0. keeps texture from
// exceeding (1<<m_ResolutionClamp) at picmip 0. at picmip 1, it won't exceed
// (1<<(m_ResolutionClamp-1)), etc.
uint8 m_ResolutionClampX;
uint8 m_ResolutionClampY;
uint8 m_ResolutionClampX_360;
uint8 m_ResolutionClampY_360;
};
// Extended flags and settings:
#define VTF_RSRC_TEXTURE_SETTINGS_EX ( MK_VTF_RSRC_ID( 'T','S','0' ) )
struct TextureSettingsEx_t
{
enum Flags0 // flags0 byte mask
{
UNUSED = 0x01,
};
uint8 m_flags0; // a bitwise combination of Flags0
uint8 m_flags1; // set to zero. for future expansion.
uint8 m_flags2; // set to zero. for future expansion.
uint8 m_flags3; // set to zero. for future expansion.
};
#define VTF_RSRC_TEXTURE_CRC ( MK_VTF_RSRC_ID( 'C','R','C' ) )
#define VTF_RSRC_TEXTURE_STREAM_SETTINGS ( MK_VTF_RSRC_ID( 'S', 'T', 'R' ) )
struct TextureStreamSettings_t
{
uint8 m_firstAvailableMip;
uint8 m_lastAvailableMip;
uint8 m_reserved0;
uint8 m_reserved1;
};
#pragma pack()
#endif // VTF_H