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502 lines
18 KiB
502 lines
18 KiB
//===== Copyright � 1996-2005, Valve Corporation, All rights reserved. ======//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//===========================================================================//
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#ifndef VTF_H
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#define VTF_H
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#ifdef _WIN32
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#pragma once
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#endif
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#include "bitmap/imageformat.h"
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#include "tier0/platform.h"
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#include "vtf/vtf_declarations.h"
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// #define VTF_FILE_FORMAT_ONLY to just include the vtf header and none of the code declaration
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#ifndef VTF_FILE_FORMAT_ONLY
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//-----------------------------------------------------------------------------
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// Interface to get at various bits of a VTF texture
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//-----------------------------------------------------------------------------
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class IVTFTexture
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{
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public:
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virtual ~IVTFTexture() { }
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// Initializes the texture and allocates space for the bits
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// In most cases, you shouldn't force the mip count.
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virtual bool Init( int nWidth, int nHeight, int nDepth, ImageFormat fmt, int nFlags, int iFrameCount, int nForceMipCount = -1 ) = 0;
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// Methods to set other texture fields
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virtual void SetBumpScale( float flScale ) = 0;
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virtual void SetReflectivity( const Vector &vecReflectivity ) = 0;
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// Methods to initialize the low-res image
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virtual void InitLowResImage( int nWidth, int nHeight, ImageFormat fmt ) = 0;
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// set the resource data (for writers). pass size=0 to delete data. if pdata is not null,
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// the resource data will be copied from *pData
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virtual void *SetResourceData( uint32 eType, void const *pData, size_t nDataSize ) = 0;
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// find the resource data and return a pointer to it. The data pointed to by this pointer will
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// go away when the ivtftexture does. retruns null if resource not present
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virtual void *GetResourceData( uint32 eType, size_t *pDataSize ) const = 0;
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// Locates the resource entry info if it's present, easier than crawling array types
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virtual bool HasResourceEntry( uint32 eType ) const = 0;
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// Retrieve available resource types of this IVTFTextures
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// arrTypesBuffer buffer to be filled with resource types available.
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// numTypesBufferElems how many resource types the buffer can accomodate.
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// Returns:
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// number of resource types available (can be greater than "numTypesBufferElems"
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// in which case only first "numTypesBufferElems" are copied to "arrTypesBuffer")
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virtual unsigned int GetResourceTypes( uint32 *arrTypesBuffer, int numTypesBufferElems ) const = 0;
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// When unserializing, we can skip a certain number of mip levels,
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// and we also can just load everything but the image data
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// NOTE: If you load only the buffer header, you'll need to use the
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// VTFBufferHeaderSize() method below to only read that much from the file
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// NOTE: If you skip mip levels, the height + width of the texture will
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// change to reflect the size of the largest read in mip level
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virtual bool Unserialize( CUtlBuffer &buf, bool bHeaderOnly = false, int nSkipMipLevels = 0 ) = 0;
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virtual bool Serialize( CUtlBuffer &buf ) = 0;
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// These are methods to help with optimization:
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// Once the header is read in, they indicate where to start reading
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// other data (measured from file start), and how many bytes to read....
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virtual void LowResFileInfo( int *pStartLocation, int *pSizeInBytes) const = 0;
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virtual void ImageFileInfo( int nFrame, int nFace, int nMip, int *pStartLocation, int *pSizeInBytes) const = 0;
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virtual int FileSize( int nMipSkipCount = 0 ) const = 0;
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// Attributes...
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virtual int Width() const = 0;
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virtual int Height() const = 0;
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virtual int Depth() const = 0;
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virtual int MipCount() const = 0;
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// returns the size of one row of a particular mip level
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virtual int RowSizeInBytes( int nMipLevel ) const = 0;
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// returns the size of one face of a particular mip level
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virtual int FaceSizeInBytes( int nMipLevel ) const = 0;
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virtual ImageFormat Format() const = 0;
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virtual int FaceCount() const = 0;
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virtual int FrameCount() const = 0;
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virtual int Flags() const = 0;
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virtual float BumpScale() const = 0;
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virtual int LowResWidth() const = 0;
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virtual int LowResHeight() const = 0;
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virtual ImageFormat LowResFormat() const = 0;
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// NOTE: reflectivity[0] = blue, [1] = greem, [2] = red
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virtual const Vector &Reflectivity() const = 0;
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virtual bool IsCubeMap() const = 0;
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virtual bool IsNormalMap() const = 0;
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virtual bool IsVolumeTexture() const = 0;
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// Computes the dimensions of a particular mip level
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virtual void ComputeMipLevelDimensions( int iMipLevel, int *pMipWidth, int *pMipHeight, int *pMipDepth ) const = 0;
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// Computes the size (in bytes) of a single mipmap of a single face of a single frame
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virtual int ComputeMipSize( int iMipLevel ) const = 0;
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// Computes the size of a subrect (specified at the top mip level) at a particular lower mip level
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virtual void ComputeMipLevelSubRect( Rect_t* pSrcRect, int nMipLevel, Rect_t *pSubRect ) const = 0;
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// Computes the size (in bytes) of a single face of a single frame
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// All mip levels starting at the specified mip level are included
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virtual int ComputeFaceSize( int iStartingMipLevel = 0 ) const = 0;
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// Computes the total size (in bytes) of all faces, all frames
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virtual int ComputeTotalSize() const = 0;
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// Returns the base address of the image data
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virtual uint8 *ImageData() = 0;
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// Returns a pointer to the data associated with a particular frame, face, and mip level
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virtual uint8 *ImageData( int iFrame, int iFace, int iMipLevel ) = 0;
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// Returns a pointer to the data associated with a particular frame, face, mip level, and offset
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virtual uint8 *ImageData( int iFrame, int iFace, int iMipLevel, int x, int y, int z = 0 ) = 0;
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// Returns the base address of the low-res image data
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virtual uint8 *LowResImageData() = 0;
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// Converts the textures image format. Use IMAGE_FORMAT_DEFAULT
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// if you want to be able to use various tool functions below
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virtual void ConvertImageFormat( ImageFormat fmt, bool bNormalToDUDV, bool bNormalToDXT5GA = false ) = 0;
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// NOTE: The following methods only work on textures using the
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// IMAGE_FORMAT_DEFAULT!
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// Generate spheremap based on the current cube faces (only works for cubemaps)
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// The look dir indicates the direction of the center of the sphere
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// NOTE: Only call this *after* cube faces have been correctly
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// oriented (using FixCubemapFaceOrientation)
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#if !defined (_PS3)
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virtual void GenerateSpheremap( LookDir_t lookDir = LOOK_DOWN_Z ) = 0;
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#endif
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// Generate spheremap based on the current cube faces (only works for cubemaps)
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// The look dir indicates the direction of the center of the sphere
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// NOTE: Only call this *after* cube faces have been correctly
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// oriented (using FixCubemapFaceOrientation)
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virtual void GenerateHemisphereMap( uint8 *pSphereMapBitsRGBA, int targetWidth,
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int targetHeight, LookDir_t lookDir, int iFrame ) = 0;
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// Fixes the cubemap faces orientation from our standard to the
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// standard the material system needs.
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virtual void FixCubemapFaceOrientation( ) = 0;
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// Generates mipmaps from the base mip levels
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virtual void GenerateMipmaps() = 0;
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// Put 1/miplevel (1..n) into alpha.
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virtual void PutOneOverMipLevelInAlpha() = 0;
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// Scale alpha by miplevel/mipcount
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virtual void PremultAlphaWithMipFraction() = 0;
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// Computes the reflectivity
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virtual void ComputeReflectivity( ) = 0;
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// Computes the alpha flags
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virtual void ComputeAlphaFlags() = 0;
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// Generate the low-res image bits
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virtual bool ConstructLowResImage() = 0;
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// Gets the texture all internally consistent assuming you've loaded
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// mip 0 of all faces of all frames
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virtual void PostProcess(bool bGenerateSpheremap, LookDir_t lookDir = LOOK_DOWN_Z, bool bAllowFixCubemapOrientation = true, bool bLoadedMiplevels = false) = 0;
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// Blends adjacent pixels on cubemap borders, since the card doesn't do it. If the texture
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// is S3TC compressed, then it has to do it AFTER the texture has been compressed to prevent
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// artifacts along the edges.
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//
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// If bSkybox is true, it assumes the faces are oriented in the way the engine draws the skybox
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// (which happens to be different from the way cubemaps have their faces).
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virtual void MatchCubeMapBorders( int iStage, ImageFormat finalFormat, bool bSkybox ) = 0;
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// Sets threshhold values for alphatest mipmapping
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virtual void SetAlphaTestThreshholds( float flBase, float flHighFreq ) = 0;
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virtual bool IsPreTiled() const = 0;
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#if defined( _GAMECONSOLE )
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virtual int UpdateOrCreate( const char *pFilename, const char *pPathID = NULL, bool bForce = false ) = 0;
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virtual bool UnserializeFromBuffer( CUtlBuffer &buf, bool bBufferIsVolatile, bool bHeaderOnly, bool bPreloadOnly, int nMipSkipCount ) = 0;
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virtual int FileSize( bool bPreloadOnly, int nMipSkipCount ) const = 0;
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virtual int MappingWidth() const = 0;
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virtual int MappingHeight() const = 0;
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virtual int MappingDepth() const = 0;
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virtual int MipSkipCount() const = 0;
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virtual uint8 *LowResImageSample() = 0;
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virtual void ReleaseImageMemory() = 0;
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#endif
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#if defined ( _PS3 )
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virtual int GetImageOffset() const = 0;
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#endif
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// Sets post-processing flags (settings are copied, pointer passed to distinguish between structure versions)
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virtual void SetPostProcessingSettings( VtfProcessingOptions const *pOptions ) = 0;
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};
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//-----------------------------------------------------------------------------
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// Class factory
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//-----------------------------------------------------------------------------
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IVTFTexture *CreateVTFTexture();
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void DestroyVTFTexture( IVTFTexture *pTexture );
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//-----------------------------------------------------------------------------
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// Allows us to only load in the first little bit of the VTF file to get info
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// Clients should read this much into a UtlBuffer and then pass it in to
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// Unserialize
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//-----------------------------------------------------------------------------
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int VTFFileHeaderSize( int nMajorVersion = -1, int nMinorVersion = -1 );
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//-----------------------------------------------------------------------------
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// 360 Conversion
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//-----------------------------------------------------------------------------
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typedef bool (*CompressFunc_t)( CUtlBuffer &inputBuffer, CUtlBuffer &outputBuffer );
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bool ConvertVTFTo360Format( const char *pDebugName, CUtlBuffer &sourceBuf, CUtlBuffer &targetBuf, CompressFunc_t pCompressFunc, int nMaxMip = 0 );
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bool ConvertVTFToPS3Format( const char *pDebugName, CUtlBuffer &sourceBuf, CUtlBuffer &targetBuf, CompressFunc_t pCompressFunc, int nMaxMip = 0 );
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bool SRGBCorrectImage( uint8 *pImage,int imageSize, ImageFormat imageFormat);
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//-----------------------------------------------------------------------------
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// 360 Preload
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//-----------------------------------------------------------------------------
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bool GetVTFPreload360Data( const char *pDebugName, CUtlBuffer &fileBufferIn, CUtlBuffer &preloadBufferOut );
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bool GetVTFPreloadPS3Data( const char *pDebugName, CUtlBuffer &fileBufferIn, CUtlBuffer &preloadBufferOut );
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#include "mathlib/vector.h"
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#endif // VTF_FILE_FORMAT_ONLY
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//-----------------------------------------------------------------------------
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// Disk format for VTF files ver. 7.2 and earlier
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//
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// NOTE: After the header is the low-res image data
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// Then follows image data, which is sorted in the following manner
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//
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// for each mip level (starting with 1x1, and getting larger)
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// for each animation frame
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// for each face
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// store the image data for the face
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//
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// NOTE: In memory, we store the data in the following manner:
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// for each animation frame
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// for each face
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// for each mip level (starting with the largest, and getting smaller)
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// store the image data for the face
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//
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// This is done because the various image manipulation function we have
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// expect this format
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//-----------------------------------------------------------------------------
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// Disk format for VTF files ver. 7.3
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//
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// NOTE: After the header is the array of ResourceEntryInfo structures,
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// number of elements in the array is defined by "numResources".
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// there are entries for:
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// eRsrcLowResImage = low-res image data
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// eRsrcSheet = sheet data
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// eRsrcImage = image data
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// {
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// for each mip level (starting with 1x1, and getting larger)
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// for each animation frame
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// for each face
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// store the image data for the face
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//
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// NOTE: In memory, we store the data in the following manner:
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// for each animation frame
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// for each face
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// for each mip level (starting with the largest, and getting smaller)
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// store the image data for the face
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// }
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//
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//-----------------------------------------------------------------------------
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#include "datamap.h"
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#pragma pack(1)
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// version number for the disk texture cache
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#define VTF_MAJOR_VERSION 7
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#define VTF_MINOR_VERSION 5
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//-----------------------------------------------------------------------------
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// !!!!CRITICAL!!!! BEFORE YOU CHANGE THE FORMAT
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//
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// The structure sizes ARE NOT what they appear, regardless of Pack(1).
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// The "VectorAligned" causes invisible padding in the FINAL derived structure.
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//
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// Each VTF format has been silently plagued by this.
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//
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// LOOK AT A 7.3 FILE. The 7.3 structure ends at 0x48 as you would expect by
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// counting structure bytes. But, the "Infos" start at 0x50! because the PC
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// compiler pads, the 360 compiler does NOT.
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//-----------------------------------------------------------------------------
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struct VTFFileBaseHeader_t
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{
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DECLARE_BYTESWAP_DATADESC();
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char fileTypeString[4]; // "VTF" Valve texture file
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int version[2]; // version[0].version[1]
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int headerSize;
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};
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struct VTFFileHeaderV7_1_t : public VTFFileBaseHeader_t
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{
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DECLARE_BYTESWAP_DATADESC();
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uint16 width;
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uint16 height;
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uint32 flags;
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uint16 numFrames;
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uint16 startFrame;
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#if !defined( POSIX ) && !defined( _X360 )
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VectorAligned reflectivity;
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#else
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// must manually align in order to maintain pack(1) expected layout with existing binaries
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char pad1[4];
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Vector reflectivity;
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char pad2[4];
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#endif
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float bumpScale;
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ImageFormat imageFormat;
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uint8 numMipLevels;
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ImageFormat lowResImageFormat;
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uint8 lowResImageWidth;
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uint8 lowResImageHeight;
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};
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struct VTFFileHeaderV7_2_t : public VTFFileHeaderV7_1_t
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{
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DECLARE_BYTESWAP_DATADESC();
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uint16 depth;
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};
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#define BYTE_POS( byteVal, shft ) uint32( uint32(uint8(byteVal)) << uint8(shft * 8) )
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#if !defined( _X360 ) && !defined ( _PS3 )
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#define MK_VTF_RSRC_ID(a, b, c) uint32( BYTE_POS(a, 0) | BYTE_POS(b, 1) | BYTE_POS(c, 2) )
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#define MK_VTF_RSRCF(d) BYTE_POS(d, 3)
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#else
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#define MK_VTF_RSRC_ID(a, b, c) uint32( BYTE_POS(a, 3) | BYTE_POS(b, 2) | BYTE_POS(c, 1) )
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#define MK_VTF_RSRCF(d) BYTE_POS(d, 0)
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#endif
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// Special section for stock resources types
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enum ResourceEntryType
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{
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// Legacy stock resources, readin/writing are handled differently (i.e. they do not have the length tag word!)
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VTF_LEGACY_RSRC_LOW_RES_IMAGE = MK_VTF_RSRC_ID( 0x01, 0, 0 ), // Low-res image data
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VTF_LEGACY_RSRC_IMAGE = MK_VTF_RSRC_ID( 0x30, 0, 0 ), // Image data
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// New extended resource
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VTF_RSRC_SHEET = MK_VTF_RSRC_ID( 0x10, 0, 0 ), // Sheet data
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};
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// Bytes with special meaning when set in a resource type
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enum ResourceEntryTypeFlag
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{
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RSRCF_HAS_NO_DATA_CHUNK = MK_VTF_RSRCF( 0x02 ), // Resource doesn't have a corresponding data chunk
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RSRCF_MASK = MK_VTF_RSRCF( 0xFF ) // Mask for all the flags
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};
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// Header details constants
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enum HeaderDetails
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{
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MAX_RSRC_DICTIONARY_ENTRIES = 32, // Max number of resources in dictionary
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MAX_X360_RSRC_DICTIONARY_ENTRIES = 4, // 360 needs this to be slim, otherwise preload size suffers
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};
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struct ResourceEntryInfo
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{
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union
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{
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uint32 eType; // Use MK_VTF_??? macros to be endian compliant with the type
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uint8 chTypeBytes[4];
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};
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uint32 resData; // Resource data or offset from the beginning of the file
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};
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struct VTFFileHeaderV7_3_t : public VTFFileHeaderV7_2_t
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{
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DECLARE_BYTESWAP_DATADESC();
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char pad4[3];
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uint32 numResources;
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#if defined( _X360 ) || defined( POSIX )
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// must manually align in order to maintain pack(1) expected layout with existing binaries
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char pad5[8];
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#endif
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// AFTER THE IMPLICIT PADDING CAUSED BY THE COMPILER....
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// *** followed by *** ResourceEntryInfo resources[0];
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// Array of resource entry infos sorted ascending by type
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};
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struct VTFFileHeader_t : public VTFFileHeaderV7_3_t
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{
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DECLARE_BYTESWAP_DATADESC();
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};
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#define VTF_X360_MAJOR_VERSION 0x0360
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#define VTF_X360_MINOR_VERSION 8
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struct VTFFileHeaderX360_t : public VTFFileBaseHeader_t
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{
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DECLARE_BYTESWAP_DATADESC();
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uint32 flags;
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uint16 width; // actual width of data in file
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uint16 height; // actual height of data in file
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uint16 depth; // actual depth of data in file
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uint16 numFrames;
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uint16 preloadDataSize; // exact size of preload data (may extend into image!)
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uint8 mipSkipCount; // used to resconstruct mapping dimensions
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uint8 numResources;
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Vector reflectivity; // Resides on 16 byte boundary!
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float bumpScale;
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ImageFormat imageFormat;
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uint8 lowResImageSample[4];
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uint32 compressedSize;
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// *** followed by *** ResourceEntryInfo resources[0];
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};
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// PS3 version of the vtf file header. This is just a copy of the 360 file header
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#define VTF_PS3_MAJOR_VERSION 0x0333
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#define VTF_PS3_MINOR_VERSION 8
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struct ALIGN16 VTFFileHeaderPS3_t : public VTFFileBaseHeader_t
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{
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DECLARE_BYTESWAP_DATADESC();
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uint32 flags;
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uint16 width; // actual width of data in file
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uint16 height; // actual height of data in file
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uint16 depth; // actual depth of data in file
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uint16 numFrames;
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uint16 preloadDataSize; // exact size of preload data (may extend into image!)
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uint8 mipSkipCount; // used to resconstruct mapping dimensions
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uint8 numResources;
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Vector reflectivity; // Resides on 16 byte boundary!
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float bumpScale;
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ImageFormat imageFormat;
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uint8 lowResImageSample[4];
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uint32 compressedSize;
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uint8 _padding_ps3[4]; // padding it to 64 bytes
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// *** followed by *** ResourceEntryInfo resources[0];
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}
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ALIGN16_POST;
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///////////////////////////
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// Resource Extensions //
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///////////////////////////
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// extended texture lod control:
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#define VTF_RSRC_TEXTURE_LOD_SETTINGS ( MK_VTF_RSRC_ID( 'L','O','D' ) )
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struct TextureLODControlSettings_t
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{
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// What to clamp the dimenstions to, mip-map wise, when at picmip 0. keeps texture from
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// exceeding (1<<m_ResolutionClamp) at picmip 0. at picmip 1, it won't exceed
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// (1<<(m_ResolutionClamp-1)), etc.
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uint8 m_ResolutionClampX;
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uint8 m_ResolutionClampY;
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uint8 m_ResolutionClampX_360;
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uint8 m_ResolutionClampY_360;
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};
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// Extended flags and settings:
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#define VTF_RSRC_TEXTURE_SETTINGS_EX ( MK_VTF_RSRC_ID( 'T','S','0' ) )
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struct TextureSettingsEx_t
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{
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enum Flags0 // flags0 byte mask
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{
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UNUSED = 0x01,
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};
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uint8 m_flags0; // a bitwise combination of Flags0
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uint8 m_flags1; // set to zero. for future expansion.
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uint8 m_flags2; // set to zero. for future expansion.
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uint8 m_flags3; // set to zero. for future expansion.
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};
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#define VTF_RSRC_TEXTURE_CRC ( MK_VTF_RSRC_ID( 'C','R','C' ) )
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#pragma pack()
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#endif // VTF_H
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