ddsFloatReader.h

//
//-
// ==========================================================================
// Copyright 1995,2006,2008 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+
//

#ifndef DDS_FLOAT_READER_H
#define DDS_FLOAT_READER_H

#define DEBUG_DDS( x) 
//#define DEBUG_DDS( x) x

#ifdef _WIN32
#pragma pack(1)
#endif

#ifndef _WIN32
typedef unsigned char BYTE;
typedef unsigned int DWORD;
typedef unsigned short WORD;
#endif

namespace dds_Float_Reader
{
// 
// Our DDS constants
//

#define DDS_MAGIC_NUMBER                                0x20534444

#define DDS_CAPS_FLAG                                   0x00000001
#define DDS_HEIGHT_FLAG                                 0x00000002
#define DDS_WIDTH_FLAG                                  0x00000004
#define DDS_PITCH_FLAG                                  0x00000008
#define DDS_PIXEL_FORMAT_FLAG                   0x00001000
#define DDS_MIPMAP_COUNT_FLAG                   0x00020000
#define DDS_LINEARSIZE_FLAG                             0x00080000
#define DDS_DEPTH_FLAG                                  0x00800000
#define DDS_HAS_ALPHA_FLAG                              0x00000001
#define DDS_FOURCC_FLAG                                 0x00000004
#define DDS_RGB_FLAG                                    0x00000040
#define DDS_PALETTEINDEXED8                             0x00000020                      
#define DDS_PALETTEINDEXED4TO8                  0x00000010
#define DDS_PALETTEINDEXED4                             0x00000008

#define DDSCAPS_COMPLEX_FLAG                    0x00000008
#define DDSCAPS_TEXTURE_FLAG                    0x00001000
#define DDSCAPS_MIPMAP_FLAG                             0x00400000

#define DDSCAPS2_CUBEMAP_FLAG                   0x00000200
#define DDSCAPS2_CUBEMAP_POSITIVEX_FLAG 0x00000400
#define DDSCAPS2_CUBEMAP_NEGATIVEX_FLAG 0x00000800
#define DDSCAPS2_CUBEMAP_POSITIVEY_FLAG 0x00001000
#define DDSCAPS2_CUBEMAP_NEGATIVEY_FLAG 0x00002000
#define DDSCAPS2_CUBEMAP_POSITIVEZ_FLAG 0x00004000
#define DDSCAPS2_CUBEMAP_NEGATIVEZ_FLAG 0x00008000

#define DDSCAPS2_VOLUME_FLAG                    0x00200000

#define DDS_DXT1                                                0x31545844
#define DDS_DXT2                                                0x32545844
#define DDS_DXT3                                                0x33545844
#define DDS_DXT4                                                0x34545844
#define DDS_DXT5                                                0x35545844


// Float and half float formats specified in FourCC
#define DDS_R16F                                                111
#define DDS_G16R16F                                             112
#define DDS_A16B16G16R16F                               113
#define DDS_R32F                                                114
#define DDS_G32R32F                                             115
#define DDS_A32B32G32R32F                               116

//
// This structure describes the format of the file's pixel data 
//
typedef struct DDS_FORMAT {
        DWORD           fSize;
        DWORD           fFlags;
        DWORD           fPixelFormat; //fFourCC;
        DWORD           fRGBBitCount;
        DWORD           fRedBitMask;
        DWORD           fGreenBitMask;
        DWORD           fBlueBitMask;
        DWORD           fAlphaBitMask;
} DDS_FORMAT;


//
// DDS capabilities structure
//
typedef struct DDSCAPS2 {
    DWORD       dwCaps;         // capabilities of surface wanted
    DWORD       dwCaps2;
    DWORD       dwCaps3;
    union
    {
        DWORD       dwCaps4;
        DWORD       dwVolumeDepth;
    };
} DDSCAPS2;


//
// The header for a DDS file
//
typedef struct DDS_HEADER {
        DWORD           fDDSMagicNumber;
        DWORD           fSize;
        DWORD           fFlags;
        DWORD           fHeight;
        DWORD           fWidth;
        union {
                DWORD           fUncompressedPitch;
                DWORD           fCompressedSize;
        };
        DWORD           fDepth;
        DWORD           fMipMapCount;
        DWORD           fReserved1[11];
        DDS_FORMAT      fFormat;                        // Pixel format 
        DDSCAPS2        fCapabilities;
        DWORD           fReserved2;
} DDS_HEADER;

}

#ifdef _WIN32
#pragma pack()
#endif /*WIN32*/

#endif