/usr/include/glide3/texus.h is in libglide3-dev 2002.04.10ds1-13.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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** Copyright (c) 1995, 3Dfx Interactive, Inc.
** All Rights Reserved.
**
** This is UNPUBLISHED PROPRIETARY SOURCE CODE of 3Dfx Interactive, Inc.;
** the contents of this file may not be disclosed to third parties, copied or
** duplicated in any form, in whole or in part, without the prior written
** permission of 3Dfx Interactive, Inc.
**
** RESTRICTED RIGHTS LEGEND:
** Use, duplication or disclosure by the Government is subject to restrictions
** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
** rights reserved under the Copyright Laws of the United States.
**
** $Revision: 1.3 $
** $Date: 2000/08/25 17:33:26 $
*/
#ifndef __TEXUS_H__
#define __TEXUS_H__
#ifdef __cplusplus
extern "C" {
#endif
#include <stdlib.h>
#include <stdio.h>
#include <3dfx.h>
#ifndef __3DFX_H__
/*
** basic data types
*/
typedef unsigned char FxU8;
typedef unsigned short FxU16;
typedef short FxI16;
#if defined(__alpha__) || defined(__LP64__)
typedef unsigned int FxU32;
typedef int FxI32;
#else
typedef unsigned long FxU32;
typedef long FxI32;
#endif
typedef unsigned long AnyPtr;
typedef int FxBool;
/*
** fundamental types
*/
#define FXTRUE 1
#define FXFALSE 0
#endif /* __3DFX_H__ */
#ifndef __GLIDE_H__
/* These are defined so we can use them without glide */
typedef FxU32 GrTextureFormat_t;
#define GR_TEXFMT_8BIT 0x0
#define GR_TEXFMT_RGB_332 GR_TEXFMT_8BIT
#define GR_TEXFMT_YIQ_422 0x1
#define GR_TEXFMT_ALPHA_8 0x2 /* (0..0xFF) alpha */
#define GR_TEXFMT_INTENSITY_8 0x3 /* (0..0xFF) intensity */
#define GR_TEXFMT_ALPHA_INTENSITY_44 0x4
#define GR_TEXFMT_P_8 0x5
#define GR_TEXFMT_P_8_6666 0x6
#define GR_TEXFMT_P_8_6666_EXT 0x6
#define GR_TEXFMT_RSVD2 0x7
#define GR_TEXFMT_16BIT 0x8
#define GR_TEXFMT_ARGB_8332 GR_TEXFMT_16BIT
#define GR_TEXFMT_AYIQ_8422 0x9
#define GR_TEXFMT_RGB_565 0xa
#define GR_TEXFMT_ARGB_1555 0xb
#define GR_TEXFMT_ARGB_4444 0xc
#define GR_TEXFMT_ALPHA_INTENSITY_88 0xd
#define GR_TEXFMT_AP_88 0xe
#define GR_TEXFMT_RSVD4 0xf
/* sst2 formats */
#define GR_TEXFMT_ARGB_CMP_FXT1 0x11
#define GR_TEXFMT_ARGB_8888 0x12
#define GR_TEXFMT_YUYV_422 0x13
#define GR_TEXFMT_UYVY_422 0x14
#define GR_TEXFMT_AYUV_444 0x15
#define GR_TEXFMT_ARGB_CMP_DXT1 0x16
#define GR_TEXFMT_ARGB_CMP_DXT2 0x17
#define GR_TEXFMT_ARGB_CMP_DXT3 0x18
#define GR_TEXFMT_ARGB_CMP_DXT4 0x19
#define GR_TEXFMT_ARGB_CMP_DXT5 0x1A
#define GR_TEXFMT_LAST GR_TEXFMT_ARGB_CMP_DXT5
typedef FxI32 GrLOD_t;
#ifdef GLIDE3
#define GR_LOD_256 0x8
#define GR_LOD_128 0x7
#define GR_LOD_64 0x6
#define GR_LOD_32 0x5
#define GR_LOD_16 0x4
#define GR_LOD_8 0x3
#define GR_LOD_4 0x2
#define GR_LOD_2 0x1
#define GR_LOD_1 0x0
#else
#define GR_LOD_256 0x0
#define GR_LOD_128 0x1
#define GR_LOD_64 0x2
#define GR_LOD_32 0x3
#define GR_LOD_16 0x4
#define GR_LOD_8 0x5
#define GR_LOD_4 0x6
#define GR_LOD_2 0x7
#define GR_LOD_1 0x8
#endif
typedef FxI32 GrAspectRatio_t;
#ifdef GLIDE3
#define GR_ASPECT_8x1 3 /* 8W x 1H */
#define GR_ASPECT_4x1 2 /* 4W x 1H */
#define GR_ASPECT_2x1 1 /* 2W x 1H */
#define GR_ASPECT_1x1 0 /* 1W x 1H */
#define GR_ASPECT_1x2 -1 /* 1W x 2H */
#define GR_ASPECT_1x4 -2 /* 1W x 4H */
#define GR_ASPECT_1x8 -3 /* 1W x 8H */
#else
#define GR_ASPECT_8x1 0x0 /* 8W x 1H */
#define GR_ASPECT_4x1 0x1 /* 4W x 1H */
#define GR_ASPECT_2x1 0x2 /* 2W x 1H */
#define GR_ASPECT_1x1 0x3 /* 1W x 1H */
#define GR_ASPECT_1x2 0x4 /* 1W x 2H */
#define GR_ASPECT_1x4 0x5 /* 1W x 4H */
#define GR_ASPECT_1x8 0x6 /* 1W x 8H */
#endif /* GLIDE3 */
/*
** 3DF texture file structs
*/
typedef struct
{
FxU32 width, height;
int small_lod, large_lod;
GrAspectRatio_t aspect_ratio;
GrTextureFormat_t format;
} Gu3dfHeader;
typedef struct
{
FxU8 yRGB[16];
FxI16 iRGB[4][3];
FxI16 qRGB[4][3];
FxU32 packed_data[12];
} GuNccTable;
typedef struct {
FxU32 data[256];
} GuTexPalette;
typedef union {
GuNccTable nccTable;
GuTexPalette palette;
} GuTexTable;
typedef struct
{
Gu3dfHeader header;
GuTexTable table;
void *data;
FxU32 mem_required; /* memory required for mip map in bytes. */
} Gu3dfInfo;
#endif /* __GLIDE_H__*/
#define GR_TEXFMT_32BIT 0x12
#define GR_TEXFMT_RGB_888 0xff
#define GR_TEXFMT_ANY 0x7fffffff
/* Save typing fingers*/
#define GR_TEXFMT_A_8 GR_TEXFMT_ALPHA_8
#define GR_TEXFMT_I_8 GR_TEXFMT_INTENSITY_8
#define GR_TEXFMT_AI_44 GR_TEXFMT_ALPHA_INTENSITY_44
#define GR_TEXFMT_AI_88 GR_TEXFMT_ALPHA_INTENSITY_88
#define TX_DITHER_NONE 0x00000000
#define TX_DITHER_4x4 0x00000001
#define TX_DITHER_ERR 0x00000002
#define TX_DITHER_MASK 0x0000000f
#define TX_COMPRESSION_STATISTICAL 0x00000000
#define TX_COMPRESSION_HEURISTIC 0x00000010
#define TX_COMPRESSION_MASK 0x000000f0
#define TX_CLAMP_DISABLE 0x00000000
#define TX_CLAMP_ENABLE 0x00000100
#define TX_CLAMP_MASK 0x00000f00
#define TX_AUTORESIZE_DISABLE 0x00000000
#define TX_AUTORESIZE_GROW 0x00001000
#define TX_AUTORESIZE_SHRINK 0x00002000
#define TX_AUTORESIZE_MASK 0x0000f000
#define TX_TARGET_PALNCC_BESTFIT 0x00000000
#define TX_TARGET_PALNCC_SOURCE 0x00010000
#define TX_TARGET_PALNCC_MASK 0x000f0000
/*
* (GaryMcT)
* TX_FIXED_PAL_QUANT_DIST - use color distance to map a true color
* image back into a user specified palette.
* Use this when you have a lot of different
* palettes.
* TX_FIXED_PAL_QUANT_TABLE- use an inverse palette to map colors
* into a user specfied palette.
* Use this method when you have a few
* palettes. Will run faster if you
* process textures with the same
* palette sequentially since the palette
* is compiled internally to a lookup table.
*/
#define TX_FIXED_PAL_QUANT_DIST 0x00000000
#define TX_FIXED_PAL_QUANT_TABLE 0x00100000
#define TX_FIXED_PAL_QUANT_MASK 0x00f00000
#define TX_WRITE_3DF 0x00000000
#define TX_WRITE_TGA 0x00000001
#define TX_WRITE_TXS 0x00000002
#define TX_WRITE_MASK 0x0000000f
/*
* Publicly accessible functions.
*/
/*
* txInit3dfInfo:
* Set up the target parameters for a texture conversion.
* info - Glide texture structure to set up.
* destFormat - format that we will be converting to.
* destWidth, destHeight - geometry of the target texture image.
* Are modified if TX_AUTORESIZE is enabled.
* mipLevels - number of mipmap levels in the target texture.
* Either specifies the number of mipmap levels
* to create, or -1 for all possible mipmap levels.
* flags -
* auto-resample mode - TX_AUTORESIZE_*
*/
size_t txInit3dfInfo( Gu3dfInfo *info, GrTextureFormat_t destFormat,
int *destWidth, int *destHeight,
int mipLevels, FxU32 flags );
size_t txInit3dfInfoFromFile( FILE *file,
Gu3dfInfo *info, GrTextureFormat_t destFormat,
int *destWidth, int *destHeight,
int mipLevels, FxU32 flags );
/*
* txConvert: convert from an in memory texture to a Glide Gu3dfInfo.
* info - target texture info. . is set up with txInit3dfInfo.
* srcFormat - format of in-memory source texture.
* srcWidth, srcHeight - geometry of in memory source texture.
* This is not limited in size or
* aspect ratio.
* flags -
* dither mode - TX_DITHER_*
* compression - TX_COMPRESS_*
* clamp mode - TX_CLAMP_*
* palette conversion mode - TX_FIXED_PAL_QUANT_*
*/
FxBool txConvert( Gu3dfInfo *info, GrTextureFormat_t srcFormat,
int srcWidth, int srcHeight,
const void *srcImage, FxU32 flags,
const void *palNcc );
FxBool txConvertFromFile( FILE *file, Gu3dfInfo *info,
FxU32 flags, const void *palNcc );
FxBool txWrite( Gu3dfInfo *info, FILE *fp, FxU32 flags );
/*
* Conversion of a single mip level
*/
extern void txImgQuantize( char *dst, char *src,
int w, int h,
FxU32 format, FxU32 dither);
/*
* Error handling.
*/
typedef void (*TxErrorCallbackFnc_t)( const char *string, FxBool fatal );
/*
* Set the error call back function.
* Paramters:
* fnc: If this is non-null, set the callback
* function to this value. If this pointer,
* is null, set the callback function to
* the default value.
* old_fnc: If this pointer is non-null, fill its
* contents with the callback function before
* changing it. If this pointer is null,
* do nothing.
*/
extern void txErrorSetCallback( TxErrorCallbackFnc_t fnc,
TxErrorCallbackFnc_t *old_fnc);
/*
* TEXUS MEMORY ALLOCATION ROUTINES.
* These are not to be called directly. . .they are only here
* so that you can redefine them to your own memory management
* routines.
*/
void *txMalloc( size_t size );
void txFree( void *ptr );
void *txRealloc( void *ptr, size_t size );
FxU32 txTexCalcMapSize( int x, int y, GrTextureFormat_t format );
FxU32 txTexCalcMemRequired( GrLOD_t small_lod, GrLOD_t large_lod,
GrAspectRatio_t aspect, GrTextureFormat_t format );
int txBitsPerPixel(GrTextureFormat_t format);
#ifdef __cplusplus
}
#endif
#endif /* __TEXUS_H__ */
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