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| Rev | Author | Line No. | Line |
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| 1 | pmbaty | 1 | /* |
| 2 | * This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>. |
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| 3 | * It is copyright by its individual contributors, as recorded in the |
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| 4 | * project's Git history. See COPYING.txt at the top level for license |
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| 5 | * terms and a link to the Git history. |
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| 6 | */ |
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| 7 | #pragma once |
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| 8 | /* |
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| 9 | THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX |
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| 10 | SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO |
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| 11 | END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A |
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| 12 | ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS |
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| 13 | IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS |
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| 14 | SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE |
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| 15 | FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE |
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| 16 | CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS |
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| 17 | AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE. |
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| 18 | COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED. |
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| 19 | */ |
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| 20 | |||
| 21 | /* |
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| 22 | * |
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| 23 | * Local include file for texture mapper library -- NOT to be included by users. |
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| 24 | * |
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| 25 | */ |
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| 26 | |||
| 27 | // Local include file for texture map library. |
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| 28 | |||
| 29 | #include "maths.h" |
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| 30 | #include "pstypes.h" |
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| 31 | |||
| 32 | #ifdef __cplusplus |
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| 33 | #include <cstddef> |
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| 34 | #include "dxxsconf.h" |
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| 35 | #include "dsx-ns.h" |
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| 36 | #include <array> |
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| 37 | |||
| 38 | namespace dcx { |
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| 39 | |||
| 40 | #if !DXX_USE_OGL |
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| 41 | struct g3ds_tmap; |
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| 42 | |||
| 43 | extern int prevmod(int val,int modulus); |
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| 44 | extern int succmod(int val,int modulus); |
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| 45 | |||
| 46 | fix compute_dx_dy(const g3ds_tmap &t, int top_vertex,int bottom_vertex, fix recip_dy); |
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| 47 | void compute_y_bounds(const g3ds_tmap &t, int &vlt, int &vlb, int &vrt, int &vrb,int &bottom_y_ind); |
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| 48 | |||
| 49 | extern int fx_y,fx_xleft,fx_xright; |
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| 50 | extern const unsigned char *pixptr; |
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| 51 | // texture mapper scanline renderers |
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| 52 | // Interface variables to assembler code |
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| 53 | extern fix fx_u,fx_v,fx_z,fx_du_dx,fx_dv_dx,fx_dz_dx; |
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| 54 | extern fix fx_dl_dx,fx_l; |
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| 55 | extern int bytes_per_row; |
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| 56 | extern unsigned char *write_buffer; |
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| 57 | |||
| 58 | extern uint8_t tmap_flat_color; |
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| 59 | |||
| 60 | 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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| 61 | extern const std::array<fix, FIX_RECIP_TABLE_SIZE> fix_recip_table; |
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| 62 | static inline fix fix_recip(unsigned i) |
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| 63 | { |
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| 64 | if (i < fix_recip_table.size()) |
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| 65 | return fix_recip_table[i]; |
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| 66 | else |
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| 67 | return F1_0 / i; |
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| 68 | } |
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| 69 | #endif |
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| 70 | |||
| 71 | } |
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| 72 | |||
| 73 | #endif |
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| 74 |