/*
* This file is part of the DXX-Rebirth project .
* It is copyright by its individual contributors, as recorded in the
* project's Git history. See COPYING.txt at the top level for license
* terms and a link to the Git history.
*/
#pragma once
/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
*
* Local include file for texture mapper library -- NOT to be included by users.
*
*/
// Local include file for texture map library.
#include "maths.h"
#include "pstypes.h"
#ifdef __cplusplus
#include
#include "dxxsconf.h"
#include "compiler-array.h"
struct g3ds_tmap;
extern int prevmod(int val,int modulus);
extern int succmod(int val,int modulus);
extern fix compute_dx_dy(g3ds_tmap *t, int top_vertex,int bottom_vertex, fix recip_dy);
extern void compute_y_bounds(g3ds_tmap *t, int *vlt, int *vlb, int *vrt, int *vrb,int *bottom_y_ind);
extern int fx_y,fx_xleft,fx_xright,per2_flag;
extern unsigned char tmap_flat_color;
extern unsigned char *pixptr;
// texture mapper scanline renderers
extern void asm_tmap_scanline_per(void);
extern fix compute_dx_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
extern fix compute_du_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
extern fix compute_dv_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
// Interface variables to assembler code
extern fix fx_u,fx_v,fx_z,fx_du_dx,fx_dv_dx,fx_dz_dx;
extern fix fx_dl_dx,fx_l;
extern int fx_r,fx_g,fx_b,fx_dr_dx,fx_dg_dx,fx_db_dx;
extern unsigned char *pixptr;
extern int bytes_per_row;
extern unsigned char *write_buffer;
extern ubyte tmap_flat_color;
extern ubyte tmap_flat_shade_value;
static const std::size_t FIX_RECIP_TABLE_SIZE = 641; //increased from 321 to 641, since this res is now quite achievable.. slight fps boost -MM
extern const array fix_recip_table;
static inline fix fix_recip(unsigned i)
{
if (i < fix_recip_table.size())
return fix_recip_table[i];
else
return F1_0 / i;
}
#endif