75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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#pragma once
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/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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/*
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*
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* Local include file for texture mapper library -- NOT to be included by users.
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*
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*/
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// Local include file for texture map library.
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#include "maths.h"
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#include "pstypes.h"
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#ifdef __cplusplus
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#include <cstddef>
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#include "dxxsconf.h"
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#include "dsx-ns.h"
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#include <array>
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namespace dcx {
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#if !DXX_USE_OGL
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struct g3ds_tmap;
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extern int prevmod(int val,int modulus);
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extern int succmod(int val,int modulus);
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fix compute_dx_dy(const g3ds_tmap &t, int top_vertex,int bottom_vertex, fix recip_dy);
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void compute_y_bounds(const g3ds_tmap &t, int &vlt, int &vlb, int &vrt, int &vrb,int &bottom_y_ind);
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extern int fx_y,fx_xleft,fx_xright;
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extern const color_palette_index *pixptr;
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// texture mapper scanline renderers
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// Interface variables to assembler code
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extern fix fx_u,fx_v,fx_z,fx_du_dx,fx_dv_dx,fx_dz_dx;
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extern fix fx_dl_dx,fx_l;
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extern int bytes_per_row;
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extern unsigned char *write_buffer;
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extern uint8_t tmap_flat_color;
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constexpr std::integral_constant<std::size_t, 641> FIX_RECIP_TABLE_SIZE{}; //increased from 321 to 641, since this res is now quite achievable.. slight fps boost -MM
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extern const std::array<fix, FIX_RECIP_TABLE_SIZE> fix_recip_table;
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static inline fix fix_recip(unsigned i)
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{
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if (i < fix_recip_table.size())
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return fix_recip_table[i];
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else
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return F1_0 / i;
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}
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#endif
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}
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#endif
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