1 /* $Id: texmapl.h,v 1.3 2003-02-18 20:15:48 btb Exp $ */
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9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * Local include file for texture mapper library -- NOT to be included by users.
20 * Revision 1.14 1995/02/20 18:23:02 john
21 * Put all the externs in the assembly modules into tmap_inc.asm.
22 * Also, moved all the C versions of the inner loops into a new module,
25 * Revision 1.13 1995/02/20 17:09:16 john
26 * Added code so that you can build the tmapper with no assembly!
28 * Revision 1.12 1994/11/28 13:34:34 mike
31 * Revision 1.11 1994/11/12 16:41:27 mike
34 * Revision 1.10 1994/05/24 17:30:00 mike
35 * Prototype fix_recip, asm_tmap_scanline_lin_v.
37 * Revision 1.9 1994/04/21 15:04:26 mike
38 * Add prototype for texmapl.h
40 * Revision 1.8 1994/03/31 08:34:53 mike
41 * *** empty log message ***
43 * Revision 1.7 1994/03/22 20:37:04 mike
44 * *** empty log message ***
46 * Revision 1.6 1994/03/14 15:43:03 mike
49 * Revision 1.5 1994/01/31 15:43:18 mike
50 * window_height, asm_tmap_scanline_lin_sky_v
52 * Revision 1.4 1994/01/21 21:12:27 mike
53 * Prototype asm_tmap_scanline_lin_sky
55 * Revision 1.3 1994/01/14 14:01:45 mike
56 * Add a bunch of variables.
58 * Revision 1.2 1993/11/22 10:25:11 mike
59 * *** empty log message ***
61 * Revision 1.1 1993/09/08 17:29:13 mike
67 // Local include file for texture map library.
69 extern int prevmod(int val,int modulus);
70 extern int succmod(int val,int modulus);
71 extern void texture_map_flat(g3ds_tmap *t,int color);
73 extern fix compute_dx_dy(g3ds_tmap *t, int top_vertex,int bottom_vertex, fix recip_dy);
74 extern void compute_y_bounds(g3ds_tmap *t, int *vlt, int *vlb, int *vrt, int *vrb,int *bottom_y_ind);
75 extern void asm_tmap_scanline_lin_v(void);
77 extern int fx_y,fx_xleft,fx_xright,per2_flag;
78 extern unsigned char tmap_flat_color;
79 extern unsigned char *pixptr;
81 // texture mapper scanline renderers
82 extern void asm_tmap_scanline_per(void);
83 extern void asm_pent_tmap_scanline_per(void);
84 extern void asm_ppro_tmap_scanline_per(void);
85 //extern void asm_tmap_scanline_per_doubled(void);
86 extern void asm_tmap_scanline_lin(void);
87 //extern void asm_tmap_scanline_lin_16(void);
88 //extern void asm_tmap_scanline_per_16(void);
89 extern void asm_tmap_scanline_lin_lighted(void);
90 extern void asm_tmap_scanline_flat(void);
91 extern void asm_tmap_scanline_shaded(void);
92 //extern void asm_tmap_scanline_lin_lighted_k(void);
93 //extern void asm_tmap_scanline_lin_rgb(void);
94 //extern void asm_tmap_scanline_lin_rgb_16(void);
95 //extern void asm_tmap_scanline_lin_rgb_16g(void);
96 //extern void asm_tmap_scanline_lin_ld(void);
97 //extern void asm_tmap_scanline_lin_sky(void);
98 //extern void asm_tmap_scanline_lin_sky_v(void);
100 extern fix compute_dx_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
101 extern fix compute_dx_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
102 extern fix compute_du_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
103 extern fix compute_du_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
104 extern fix compute_dv_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
105 extern fix compute_dv_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
108 // Interface variables to assembler code
109 extern fix fx_u,fx_v,fx_z,fx_du_dx,fx_dv_dx,fx_dz_dx;
110 extern fix fx_dl_dx,fx_l;
111 extern int fx_r,fx_g,fx_b,fx_dr_dx,fx_dg_dx,fx_db_dx;
112 extern unsigned char *pixptr;
114 extern int bytes_per_row;
115 extern unsigned char *write_buffer;
116 extern int window_left;
117 extern int window_right;
118 extern int window_top;
119 extern int window_bottom;
120 extern int window_width;
121 extern int window_height;
122 extern int scan_doubling_flag;
123 extern int linear_if_far_flag;
124 extern int dither_intensity_lighting;
125 extern int Interlacing_on;
127 extern ubyte * tmap_flat_cthru_table;
128 extern ubyte tmap_flat_color;
129 extern ubyte tmap_flat_shade_value;
132 extern fix fix_recip[];
134 extern void init_interface_vars_to_assembler(void);
135 extern int prevmod(int val,int modulus);