172 lines
3.1 KiB
C++
172 lines
3.1 KiB
C++
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/*
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* Copyright (c) 1993-1995 Argonaut Technologies Limited. All rights reserved.
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*
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* $Id: PERSP.C 1.5 1997/02/15 20:56:06 jon Exp $
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* $Locker: $
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*
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* Perspective texture mapper
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*/
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#include <math.h>
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#include <stdlib.h>
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#include <stdio.h>
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#define FIX 1
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#include "drv.h"
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#include "shortcut.h"
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#include "brassert.h"
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#define swap(type,a,b) { type _; _ = a; a = b; b = _; }
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#define high8(a) (*((unsigned char *)&a+3))
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#define F_ABS(x) ((x)>0 ? (x) : -(x))
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#define F_LENGTH(x,y) ((x)>(y) ? (x)+(y)*11/32 : (y)+(x)*11/32)
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extern float frcp[100];
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extern int dither[4][4];
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extern void BR_ASM_CALL ScanLinePITPD64(void);
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extern void BR_ASM_CALL ScanLinePITPD128(void);
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extern void BR_ASM_CALL ScanLinePITPD256(void);
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extern void BR_ASM_CALL ScanLinePITPD1024(void);
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extern void BR_ASM_CALL ScanLinePITIP256_RGB_555(void);
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extern void BR_ASM_CALL ScanLinePITIPB256_RGB_555(void);
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extern void BR_ASM_CALL ScanLinePITIPB256_RGB_565(void);
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extern int BR_ASM_CALL SafeFixedMac2Div(int,int,int,int,int);
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#define cutoff 4.0
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#ifdef __WATCOMC__
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extern int sar16(int);
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extern int inch(int);
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extern int incl(int);
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extern int dech(int);
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extern int decl(int);
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#pragma aux sar16 = "sar eax,16" parm [eax]
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#pragma aux inch = "inc ah" parm [eax]
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#pragma aux incl = "inc al" parm [eax]
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#pragma aux dech = "dec ah" parm [eax]
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#pragma aux decl = "dec al" parm [eax]
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#else
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#define sar16 _sar16
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#endif
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#define ZB 0
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#define BPP 1
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#if PARTS & PART_DITHER
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#define CHEAT 0
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#define FNAME TriangleRenderPITPD64
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#define SNAME ScanLinePITPD64
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#define SIZE 64
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#define LIGHT 0
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#include "perspi.h"
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#undef LINEAR
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#undef CHEAT
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#endif
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#if PARTS & PART_DITHER
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#define CHEAT 0
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#define FNAME TriangleRenderPITPD128
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#define SNAME ScanLinePITPD128
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#define SIZE 128
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#define LIGHT 0
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#include "perspi.h"
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#undef LINEAR
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#undef CHEAT
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#endif
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#if PARTS & PART_DITHER
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#define CHEAT 0
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#define FNAME TriangleRenderPITPD256
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#define SNAME ScanLinePITPD256
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#define SIZE 256
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#define LIGHT 1
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#include "perspi.h"
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#undef LINEAR
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#undef CHEAT
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#endif
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#if PARTS & PART_DITHER
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#define CHEAT 0
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#define FNAME TriangleRenderPITPD1024
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#define SNAME ScanLinePITPD1024
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#define SIZE 1024
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#define LIGHT 0
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#include "perspi.h"
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#undef LINEAR
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#endif
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#undef BPP
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#define BPP 2
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#if PARTS & PART_15
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#define CHEAT 0
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#define FNAME TriangleRenderPITIP256_RGB_555
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#define SNAME ScanLinePITIP256_RGB_555
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#define SIZE 256
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#define LIGHT 1
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#include "perspi.h"
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#endif
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#if PARTS & PART_15
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#define CHEAT 0
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#define FNAME TriangleRenderPITIPB256_RGB_555
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#define SNAME ScanLinePITIPB256_RGB_555
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#define SIZE 256
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#define LIGHT 1
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#include "perspi.h"
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#endif
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#if PARTS & PART_16
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#define CHEAT 0
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#define FNAME TriangleRenderPITIPB256_RGB_565
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#define SNAME ScanLinePITIPB256_RGB_565
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#define SIZE 256
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#define LIGHT 1
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#include "perspi.h"
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#undef LIGHT
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#undef SIZE
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#undef SNAME
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#undef FNAME
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#endif
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#undef BPP
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