183 lines
6.6 KiB
C
183 lines
6.6 KiB
C
/*
|
|
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: /cvsroot/dxx-rebirth/d1x-rebirth/include/texmap.h,v $
|
|
* $Revision: 1.1.1.1 $
|
|
* $Author: zicodxx $
|
|
* $Date: 2006/03/17 19:46:29 $
|
|
*
|
|
* Include file for entities using texture mapper library.
|
|
*
|
|
* $Log: texmap.h,v $
|
|
* Revision 1.1.1.1 2006/03/17 19:46:29 zicodxx
|
|
* initial import
|
|
*
|
|
* Revision 1.2 1999/07/07 21:21:56 donut
|
|
* increased recip table size to better accommodate 640 res
|
|
*
|
|
* Revision 1.1.1.1 1999/06/14 22:02:20 donut
|
|
* Import of d1x 1.37 source.
|
|
*
|
|
* Revision 1.2 1995/09/04 14:22:10 allender
|
|
* #defines for fixed point limits on render buffer
|
|
*
|
|
* Revision 1.1 1995/05/04 20:14:50 allender
|
|
* Initial revision
|
|
*
|
|
* Revision 1.17 1994/11/10 11:09:16 mike
|
|
* detail level stuff.
|
|
*
|
|
* Revision 1.16 1994/11/09 22:55:32 matt
|
|
* Added variable Current_seg_depth for detail level optimization
|
|
*
|
|
* Revision 1.15 1994/06/09 16:10:04 mike
|
|
* Add prototype for SC2000
|
|
*
|
|
* Revision 1.14 1994/05/25 18:46:16 matt
|
|
* Added gr_upoly_tmap_ylr(), which generates ylr's for a polygon
|
|
*
|
|
* Revision 1.13 1994/05/25 09:47:12 mike
|
|
* Added interface support for linear texture mapper (Mike change, Matt commnet)
|
|
*
|
|
* Revision 1.12 1994/05/24 17:30:43 mike
|
|
* Prototype a bunch of linear, vertical scanning functions.
|
|
*
|
|
* Revision 1.11 1994/05/19 23:26:14 mike
|
|
* Add constants NUM_LIGHTING_VALUES, MAX_LIGHTING_VALUE, MIN_LIGHTING_VALUE,
|
|
* all part of new lighting_values_in_0_to_1 system.
|
|
*
|
|
* Revision 1.10 1994/05/14 17:19:21 matt
|
|
* Added externs
|
|
*
|
|
* Revision 1.9 1994/04/13 23:55:44 matt
|
|
* Increased max_tmap_verts from 16 to 25
|
|
*
|
|
* Revision 1.8 1994/03/31 08:35:43 mike
|
|
* Prototype for gr_upoly_tmap.
|
|
*
|
|
* Revision 1.7 1994/02/08 15:17:54 mike
|
|
* define label for MAX_TMAP_VERTS
|
|
*
|
|
* Revision 1.6 1994/01/31 15:41:51 mike
|
|
* Add texture_map_lin_lin_sky_v
|
|
*
|
|
* Revision 1.5 1994/01/18 10:49:40 mike
|
|
* prototype for texture_map_lin_lin_sky
|
|
*
|
|
* Revision 1.4 1993/11/30 17:09:46 mike
|
|
* prototype for compute_lighting_value.
|
|
*
|
|
* Revision 1.3 1993/11/22 10:50:38 matt
|
|
* Add ifndef around body of file
|
|
*
|
|
* Revision 1.2 1993/10/06 12:41:25 mike
|
|
* Change prototype for draw_tmap.
|
|
*
|
|
* Revision 1.1 1993/09/08 17:29:11 mike
|
|
* Initial revision
|
|
*
|
|
*
|
|
*/
|
|
|
|
#ifndef _TEXMAP_H
|
|
#define _TEXMAP_H
|
|
|
|
#include "fix.h"
|
|
#include "3d.h"
|
|
#include "gr.h"
|
|
|
|
#define NUM_LIGHTING_LEVELS 32
|
|
#define MAX_TMAP_VERTS 25
|
|
#define MAX_LIGHTING_VALUE ((NUM_LIGHTING_LEVELS-1)*F1_0/NUM_LIGHTING_LEVELS)
|
|
#define MIN_LIGHTING_VALUE (F1_0/NUM_LIGHTING_LEVELS)
|
|
|
|
#define FIX_RECIP_TABLE_SIZE 641 //increased from 321 to 641, since this res is now quite achievable.. slight fps boost -MM
|
|
// -------------------------------------------------------------------------------------------------------
|
|
extern fix compute_lighting_value(g3s_point *vertptr);
|
|
|
|
// -------------------------------------------------------------------------------------------------------
|
|
// This is the main texture mapper call.
|
|
// tmap_num references a texture map defined in Texmap_ptrs.
|
|
// nverts = number of vertices
|
|
// vertbuf is a pointer to an array of vertex pointers
|
|
extern void draw_tmap(grs_bitmap *bp, int nverts, g3s_point **vertbuf);
|
|
|
|
// -------------------------------------------------------------------------------------------------------
|
|
// Texture map vertex.
|
|
// The fields r,g,b and l are mutually exclusive. r,g,b are used for rgb lighting.
|
|
// l is used for intensity based lighting.
|
|
typedef struct g3ds_vertex {
|
|
fix x,y,z;
|
|
fix u,v;
|
|
fix x2d,y2d;
|
|
fix l;
|
|
fix r,g,b;
|
|
} g3ds_vertex;
|
|
|
|
// A texture map is defined as a polygon with u,v coordinates associated with
|
|
// one point in the polygon, and a pair of vectors describing the orientation
|
|
// of the texture map in the world, from which the deltas Du_dx, Dv_dy, etc.
|
|
// are computed.
|
|
typedef struct g3ds_tmap {
|
|
int nv; // number of vertices
|
|
g3ds_vertex verts[MAX_TMAP_VERTS]; // up to 8 vertices, this is inefficient, change
|
|
} g3ds_tmap;
|
|
|
|
// -------------------------------------------------------------------------------------------------------
|
|
|
|
// Note: Not all interpolation method and lighting combinations are supported.
|
|
// Set Interpolation_method to 0/1/2 for linear/linear, perspective/linear, perspective/perspective
|
|
extern int Interpolation_method;
|
|
|
|
// Set Lighting_on to 0/1/2 for no lighting/intensity lighting/rgb lighting
|
|
extern int Lighting_on;
|
|
|
|
// HACK INTERFACE: how far away the current segment (& thus texture) is
|
|
extern int Current_seg_depth;
|
|
extern int Max_perspective_depth; // Deepest segment at which perspective interpolation will be used.
|
|
extern int Max_linear_depth; // Deepest segment at which linear interpolation will be used.
|
|
extern int Max_flat_depth; // Deepest segment at which flat shading will be used. (If not flat shading, then what?)
|
|
|
|
// These are pointers to texture maps. If you want to render texture map #7, then you will render
|
|
// the texture map defined by Texmap_ptrs[7].
|
|
extern grs_bitmap Texmap_ptrs[];
|
|
extern grs_bitmap Texmap4_ptrs[];
|
|
|
|
// Interface for sky renderer
|
|
extern void texture_map_lin_lin_sky(grs_bitmap *srcb, g3ds_tmap *t);
|
|
extern void texture_map_lin_lin_sky_v(grs_bitmap *srcb, g3ds_tmap *t);
|
|
extern void texture_map_hyp_lin_v(grs_bitmap *srcb, g3ds_tmap *t);
|
|
|
|
extern void ntexture_map_lighted_linear(grs_bitmap *srcb, g3ds_tmap *t);
|
|
|
|
// This is the gr_upoly-like interface to the texture mapper which uses texture-mapper compatible
|
|
// (ie, avoids cracking) edge/delta computation.
|
|
void gr_upoly_tmap(int nverts, int *vert );
|
|
|
|
//This is like gr_upoly_tmap() but instead of drawing, it calls the specified
|
|
//function with ylr values
|
|
void gr_upoly_tmap_ylr(int nverts, int *vert, void (*ylr_func)(int, fix, fix) );
|
|
|
|
extern int Transparency_on,per2_flag;
|
|
|
|
// Set to !0 to enable Sim City 2000 (or Eric's Drive Through, or Eric's Game) specific code.
|
|
extern int SC2000;
|
|
|
|
// for ugly hack put in to be sure we don't overflow render buffer
|
|
|
|
#define FIX_XLIMIT (639 * F1_0)
|
|
#define FIX_YLIMIT (479 * F1_0)
|
|
|
|
#endif
|
|
|