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Amiga ACS 1998 #6
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descent
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texmap
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texmapl.h
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1998-06-08
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/*
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.
*/
/*
* $Source: f:/miner/source/texmap/rcs/texmapl.h $
* $Revision: 1.14 $
* $Author: john $
* $Date: 1995/02/20 18:23:02 $
*
* Local include file for texture mapper library -- NOT to be included by users.
*
* $Log: texmapl.h $
* Revision 1.14 1995/02/20 18:23:02 john
* Put all the externs in the assembly modules into tmap_inc.asm.
* Also, moved all the C versions of the inner loops into a new module,
* scanline.c.
*
* Revision 1.13 1995/02/20 17:09:16 john
* Added code so that you can build the tmapper with no assembly!
*
* Revision 1.12 1994/11/28 13:34:34 mike
* optimizations.
*
* Revision 1.11 1994/11/12 16:41:27 mike
* function prototype.
*
* Revision 1.10 1994/05/24 17:30:00 mike
* Prototype fix_recip, asm_tmap_scanline_lin_v.
*
* Revision 1.9 1994/04/21 15:04:26 mike
* Add prototype for texmapl.h
*
* Revision 1.8 1994/03/31 08:34:53 mike
* *** empty log message ***
*
* Revision 1.7 1994/03/22 20:37:04 mike
* *** empty log message ***
*
* Revision 1.6 1994/03/14 15:43:03 mike
* streamline code.
*
* Revision 1.5 1994/01/31 15:43:18 mike
* window_height, asm_tmap_scanline_lin_sky_v
*
* Revision 1.4 1994/01/21 21:12:27 mike
* Prototype asm_tmap_scanline_lin_sky
*
* Revision 1.3 1994/01/14 14:01:45 mike
* Add a bunch of variables.
*
* Revision 1.2 1993/11/22 10:25:11 mike
* *** empty log message ***
*
* Revision 1.1 1993/09/08 17:29:13 mike
* Initial revision
*
*
*/
// Local include file for texture map library.
extern int prevmod(int val,int modulus);
extern int succmod(int val,int modulus);
extern void texture_map_flat(g3ds_tmap *t,int color);
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 void asm_tmap_scanline_flat(void);
extern void asm_tmap_scanline_matt(void);
extern void asm_tmap_scanline_lin_v(void);
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 void asm_tmap_scanline_per_doubled(void);
extern void asm_tmap_scanline_lin(void);
extern void asm_tmap_scanline_lin_16(void);
extern void asm_tmap_scanline_per_16(void);
extern void asm_tmap_scanline_lin_lighted(void);
extern void asm_tmap_scanline_lin_lighted_k(void);
extern void asm_tmap_scanline_lin_rgb(void);
extern void asm_tmap_scanline_lin_rgb_16(void);
extern void asm_tmap_scanline_lin_rgb_16g(void);
extern void asm_tmap_scanline_lin_ld(void);
extern void asm_tmap_scanline_lin_sky(void);
extern void asm_tmap_scanline_lin_sky_v(void);
extern fix compute_dx_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
extern fix compute_dx_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
extern fix compute_du_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
extern fix compute_du_dy_lin(g3ds_tmap *t,int vrt,int vrb, fix recip_dy);
extern fix compute_dv_dy_lin(g3ds_tmap *t,int vlt,int vlb, fix recip_dy);
extern fix compute_dv_dy_lin(g3ds_tmap *t,int vrt,int vrb, 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 int write_buffer;
extern int window_left;
extern int window_right;
extern int window_top;
extern int window_bottom;
extern int window_width;
extern int window_height;
extern int scan_doubling_flag;
extern int linear_if_far_flag;
extern int dither_intensity_lighting;
extern int Interlacing_on;
extern short _pixel_data_selector;
extern ubyte * tmap_flat_cthru_table;
extern ubyte tmap_flat_color;
extern ubyte tmap_flat_shade_value;
extern fix fix_recip[];
extern void init_interface_vars_to_assembler(void);
extern int prevmod(int val,int modulus);
#define FIX_RECIP_TABLE_SIZE 321