104 lines
2 KiB
C
104 lines
2 KiB
C
/*
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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 1.8 1995/08/31 16:47:37 sam 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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#define FIX 1
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#include "zb.h"
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#include "shortcut.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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extern void BR_ASM_CALL ScanLinePIZ2TIP256(void);
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extern void BR_ASM_CALL ScanLinePIZ2TIP64(void);
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extern void BR_ASM_CALL ScanLinePIZ2TP256(void);
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extern void BR_ASM_CALL ScanLinePIZ2TP64(void);
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extern void BR_ASM_CALL ScanLinePIZ2TP1024(void);
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BR_ASM_CALL_EXTRA(ScanLinePIZ2TIP256)
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BR_ASM_CALL_EXTRA(ScanLinePIZ2TIP64)
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BR_ASM_CALL_EXTRA(ScanLinePIZ2TP1024)
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BR_ASM_CALL_EXTRA(ScanLinePIZ2TP256)
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BR_ASM_CALL_EXTRA(ScanLinePIZ2TP64)
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extern int BR_ASM_CALL SafeFixedMac2Div(int,int,int,int,int);
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BR_ASM_CALL_EXTRA(SafeFixedMac2Div)
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extern int cutoff = 4;
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int PerspCheat = 1;
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TexturedScanLine BR_ASM_DATA tsl;
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BR_ASM_DATA_EXTRA(tsl)
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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 FNAME TriangleRenderPIZ2TIP256
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#define SIZE 256
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#define LIGHT 1
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#include "innerp.h"
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#undef LIGHT
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#undef SIZE
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#undef FNAME
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#define FNAME TriangleRenderPIZ2TP256
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#define SIZE 256
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#define LIGHT 0
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#include "innerp.h"
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#undef LIGHT
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#undef SIZE
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#undef FNAME
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#define FNAME TriangleRenderPIZ2TIP64
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#define SIZE 64
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#define LIGHT 1
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#include "innerp.h"
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#undef LIGHT
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#undef SIZE
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#undef FNAME
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#define FNAME TriangleRenderPIZ2TP64
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#define SIZE 64
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#define LIGHT 0
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#include "innerp.h"
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#undef LIGHT
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#undef SIZE
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#undef FNAME
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#define FNAME TriangleRenderPIZ2TP1024
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#define SIZE 1024
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#define LIGHT 0
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#include "innerp.h"
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#undef LIGHT
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#undef SIZE
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#undef FNAME
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