project64/Source/3rd Party/glide/glideutl.h

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2013-04-07 09:23:46 +00:00
/*
** 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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of 3Dfx Interactive, Inc.;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 Unpublished -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.
**
** $Header: /devel/cvg/glide3/src/glideutl.h 4 7/24/98 1:41p Hohn $
** $Log: /devel/cvg/glide3/src/glideutl.h $
**
** 4 7/24/98 1:41p Hohn
**
** 3 1/30/98 4:27p Atai
** gufog* prototype
**
** 1 1/29/98 4:00p Atai
*
* 1 1/16/98 4:29p Atai
* create glide 3 src
*
* 11 1/07/98 11:18a Atai
* remove GrMipMapInfo and GrGC.mm_table in glide3
*
* 10 1/06/98 6:47p Atai
* undo grSplash and remove gu routines
*
* 9 1/05/98 6:04p Atai
* move 3df gu related data structure from glide.h to glideutl.h
*
* 8 12/18/97 2:13p Peter
* fogTable cataclysm
*
* 7 12/15/97 5:52p Atai
* disable obsolete glide2 api for glide3
*
* 6 8/14/97 5:32p Pgj
* remove dead code per GMT
*
* 5 6/12/97 5:19p Pgj
* Fix bug 578
*
* 4 3/05/97 9:36p Jdt
* Removed guFbWriteRegion added guEncodeRLE16
*
* 3 1/16/97 3:45p Dow
* Embedded fn protos in ifndef FX_GLIDE_NO_FUNC_PROTO
*/
/* Glide Utility routines */
#ifndef __GLIDEUTL_H__
#define __GLIDEUTL_H__
#ifdef __cplusplus
extern "C" {
#endif
/*
** 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;
#ifndef FX_GLIDE_NO_FUNC_PROTO
/*
** Gamma functions
*/
FX_ENTRY void FX_CALL
guGammaCorrectionRGB( FxFloat red, FxFloat green, FxFloat blue );
/*
** fog stuff
*/
FX_ENTRY float FX_CALL
guFogTableIndexToW( int i );
FX_ENTRY void FX_CALL
guFogGenerateExp( GrFog_t *fogtable, float density );
FX_ENTRY void FX_CALL
guFogGenerateExp2( GrFog_t *fogtable, float density );
FX_ENTRY void FX_CALL
guFogGenerateLinear(GrFog_t *fogtable,
float nearZ, float farZ );
/*
** hi-level texture manipulation tools.
*/
FX_ENTRY FxBool FX_CALL
gu3dfGetInfo( const char *filename, Gu3dfInfo *info );
FX_ENTRY FxBool FX_CALL
gu3dfLoad( const char *filename, Gu3dfInfo *data );
#endif /* FX_GLIDE_NO_FUNC_PROTO */
#ifdef __cplusplus
}
#endif
#endif /* __GLIDEUTL_H__ */