144 lines
3.3 KiB
C
144 lines
3.3 KiB
C
/*
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** Copyright (c) 1995, 3Dfx Interactive, Inc.
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** All Rights Reserved.
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**
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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of 3Dfx Interactive, Inc.;
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** the contents of this file may not be disclosed to third parties, copied or
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** duplicated in any form, in whole or in part, without the prior written
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** permission of 3Dfx Interactive, Inc.
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**
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** RESTRICTED RIGHTS LEGEND:
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** Use, duplication or disclosure by the Government is subject to restrictions
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** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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** rights reserved under the Copyright Laws of the United States.
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**
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** $Header: /devel/cvg/glide3/src/glideutl.h 4 7/24/98 1:41p Hohn $
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** $Log: /devel/cvg/glide3/src/glideutl.h $
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**
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** 4 7/24/98 1:41p Hohn
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**
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** 3 1/30/98 4:27p Atai
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** gufog* prototype
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**
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** 1 1/29/98 4:00p Atai
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*
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* 1 1/16/98 4:29p Atai
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* create glide 3 src
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*
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* 11 1/07/98 11:18a Atai
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* remove GrMipMapInfo and GrGC.mm_table in glide3
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*
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* 10 1/06/98 6:47p Atai
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* undo grSplash and remove gu routines
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*
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* 9 1/05/98 6:04p Atai
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* move 3df gu related data structure from glide.h to glideutl.h
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*
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* 8 12/18/97 2:13p Peter
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* fogTable cataclysm
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*
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* 7 12/15/97 5:52p Atai
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* disable obsolete glide2 api for glide3
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*
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* 6 8/14/97 5:32p Pgj
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* remove dead code per GMT
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*
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* 5 6/12/97 5:19p Pgj
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* Fix bug 578
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*
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* 4 3/05/97 9:36p Jdt
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* Removed guFbWriteRegion added guEncodeRLE16
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*
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* 3 1/16/97 3:45p Dow
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* Embedded fn protos in ifndef FX_GLIDE_NO_FUNC_PROTO
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*/
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/* Glide Utility routines */
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#ifndef __GLIDEUTL_H__
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#define __GLIDEUTL_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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** 3DF texture file structs
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*/
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typedef struct
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{
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FxU32 width, height;
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int small_lod, large_lod;
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GrAspectRatio_t aspect_ratio;
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GrTextureFormat_t format;
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} Gu3dfHeader;
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typedef struct
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{
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FxU8 yRGB[16];
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FxI16 iRGB[4][3];
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FxI16 qRGB[4][3];
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FxU32 packed_data[12];
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} GuNccTable;
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typedef struct {
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FxU32 data[256];
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} GuTexPalette;
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typedef union {
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GuNccTable nccTable;
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GuTexPalette palette;
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} GuTexTable;
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typedef struct
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{
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Gu3dfHeader header;
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GuTexTable table;
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void *data;
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FxU32 mem_required; /* memory required for mip map in bytes. */
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} Gu3dfInfo;
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#ifndef FX_GLIDE_NO_FUNC_PROTO
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/*
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** Gamma functions
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*/
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FX_ENTRY void FX_CALL
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guGammaCorrectionRGB( FxFloat red, FxFloat green, FxFloat blue );
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/*
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** fog stuff
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*/
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FX_ENTRY float FX_CALL
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guFogTableIndexToW( int i );
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FX_ENTRY void FX_CALL
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guFogGenerateExp( GrFog_t *fogtable, float density );
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FX_ENTRY void FX_CALL
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guFogGenerateExp2( GrFog_t *fogtable, float density );
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FX_ENTRY void FX_CALL
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guFogGenerateLinear(GrFog_t *fogtable,
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float nearZ, float farZ );
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/*
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** hi-level texture manipulation tools.
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*/
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FX_ENTRY FxBool FX_CALL
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gu3dfGetInfo( const char *filename, Gu3dfInfo *info );
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FX_ENTRY FxBool FX_CALL
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gu3dfLoad( const char *filename, Gu3dfInfo *data );
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#endif /* FX_GLIDE_NO_FUNC_PROTO */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __GLIDEUTL_H__ */
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