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1/*
2Copyright (C) 1996-1997 Id Software, Inc.
3
4This program is free software; you can redistribute it and/or
5modify it under the terms of the GNU General Public License
6as published by the Free Software Foundation; either version 2
7of the License, or (at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13See the GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19*/
20// d_iface.h: interface header file for rasterization driver modules
21
22#define WARP_WIDTH 320
23#define WARP_HEIGHT 200
24
25#define MAX_LBM_HEIGHT 480
26
27typedef struct
28{
29 float u, v;
30 float s, t;
31 float zi;
32} emitpoint_t;
33
34typedef int ptype_t;
35
36enum {
37 pt_static, pt_grav, pt_slowgrav, pt_fire, pt_explode, pt_explode2, pt_blob, pt_blob2
38};
39
40// !!! if this is changed, it must be changed in d_ifacea.h too !!!
41typedef struct particle_s
42{
43// driver-usable fields
44 vec3_t org;
45 float color;
46// drivers never touch the following fields
47 struct particle_s *next;
48 vec3_t vel;
49 float ramp;
50 float die;
51 ptype_t type;
52} particle_t;
53
54#define PARTICLE_Z_CLIP 8.0
55
56typedef struct polyvert_s {
57 float u, v, zi, s, t;
58} polyvert_t;
59
60typedef struct polydesc_s {
61 int numverts;
62 float nearzi;
63 msurface_t *pcurrentface;
64 polyvert_t *pverts;
65} polydesc_t;
66
67// !!! if this is changed, it must be changed in d_ifacea.h too !!!
68typedef struct finalvert_s {
69 int v[6]; // u, v, s, t, l, 1/z
70 int flags;
71 float reserved;
72} finalvert_t;
73
74// !!! if this is changed, it must be changed in d_ifacea.h too !!!
75typedef struct
76{
77 void *pskin;
78 maliasskindesc_t *pskindesc;
79 int skinwidth;
80 int skinheight;
81 mtriangle_t *ptriangles;
82 finalvert_t *pfinalverts;
83 int numtriangles;
84 int drawtype;
85 int seamfixupX16;
86} affinetridesc_t;
87
88// !!! if this is changed, it must be changed in d_ifacea.h too !!!
89typedef struct {
90 float u, v, zi, color;
91} screenpart_t;
92
93typedef struct
94{
95 int nump;
96 emitpoint_t *pverts; // there's room for an extra element at [nump],
97 // if the driver wants to duplicate element [0] at
98 // element [nump] to avoid dealing with wrapping
99 mspriteframe_t *pspriteframe;
100 vec3_t vup, vright, vpn; // in worldspace
101 float nearzi;
102} spritedesc_t;
103
104typedef struct
105{
106 int u, v;
107 float zi;
108 int color;
109} zpointdesc_t;
110
111extern cvar_t r_drawflat;
112extern int d_spanpixcount;
113extern int r_framecount; // sequence # of current frame since Quake
114 // started
115extern qboolean r_drawpolys; // 1 if driver wants clipped polygons
116 // rather than a span list
117extern qboolean r_drawculledpolys; // 1 if driver wants clipped polygons that
118 // have been culled by the edge list
119extern qboolean r_worldpolysbacktofront; // 1 if driver wants polygons
120 // delivered back to front rather
121 // than front to back
122extern qboolean r_recursiveaffinetriangles; // true if a driver wants to use
123 // recursive triangular subdivison
124 // and vertex drawing via
125 // D_PolysetDrawFinalVerts() past
126 // a certain distance (normally
127 // only used by the software
128 // driver)
129extern float r_aliasuvscale; // scale-up factor for screen u and v
130 // on Alias vertices passed to driver
131extern int r_pixbytes;
132extern qboolean r_dowarp;
133
134extern affinetridesc_t r_affinetridesc;
135extern spritedesc_t r_spritedesc;
136extern zpointdesc_t r_zpointdesc;
137extern polydesc_t r_polydesc;
138
139extern int d_con_indirect; // if 0, Quake will draw console directly
140 // to vid.buffer; if 1, Quake will
141 // draw console via D_DrawRect. Must be
142 // defined by driver
143
144extern vec3_t r_pright, r_pup, r_ppn;
145
146
147void D_Aff8Patch (void *pcolormap);
148void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height);
149void D_DisableBackBufferAccess (void);
150void D_EndDirectRect (int x, int y, int width, int height);
151void D_PolysetDraw (void);
152void D_PolysetDrawFinalVerts (finalvert_t *fv, int numverts);
153void D_DrawParticle (particle_t *pparticle);
154void D_DrawPoly (void);
155void D_DrawSprite (void);
156void D_DrawSurfaces (void);
157void D_DrawZPoint (void);
158void D_EnableBackBufferAccess (void);
159void D_EndParticles (void);
160void D_Init (void);
161void D_ViewChanged (void);
162void D_SetupFrame (void);
163void D_StartParticles (void);
164void D_TurnZOn (void);
165void D_WarpScreen (void);
166
167void D_FillRect (vrect_t *vrect, int color);
168void D_DrawRect (void);
169void D_UpdateRects (vrect_t *prect);
170
171// currently for internal use only, and should be a do-nothing function in
172// hardware drivers
173// FIXME: this should go away
174void D_PolysetUpdateTables (void);
175
176// these are currently for internal use only, and should not be used by drivers
177extern int r_skydirect;
178extern byte *r_skysource;
179
180// transparency types for D_DrawRect ()
181#define DR_SOLID 0
182#define DR_TRANSPARENT 1
183
184// !!! must be kept the same as in quakeasm.h !!!
185#define TRANSPARENT_COLOR 0xFF
186
187extern void *acolormap; // FIXME: should go away
188
189//=======================================================================//
190
191// callbacks to Quake
192
193typedef struct
194{
195 pixel_t *surfdat; // destination for generated surface
196 int rowbytes; // destination logical width in bytes
197 msurface_t *surf; // description for surface to generate
198 fixed8_t lightadj[MAXLIGHTMAPS];
199 // adjust for lightmap levels for dynamic lighting
200 texture_t *texture; // corrected for animating textures
201 int surfmip; // mipmapped ratio of surface texels / world pixels
202 int surfwidth; // in mipmapped texels
203 int surfheight; // in mipmapped texels
204} drawsurf_t;
205
206extern drawsurf_t r_drawsurf;
207
208void R_DrawSurface (void);
209void R_GenTile (msurface_t *psurf, void *pdest);
210
211
212// !!! if this is changed, it must be changed in d_ifacea.h too !!!
213#define TURB_TEX_SIZE 64 // base turbulent texture size
214
215// !!! if this is changed, it must be changed in d_ifacea.h too !!!
216#define CYCLE 128 // turbulent cycle size
217
218#define TILE_SIZE 128 // size of textures generated by R_GenTiledSurf
219
220#define SKYSHIFT 7
221#define SKYSIZE (1 << SKYSHIFT)
222#define SKYMASK (SKYSIZE - 1)
223
224extern float skyspeed, skyspeed2;
225extern float skytime;
226
227extern int c_surf;
228extern vrect_t scr_vrect;
229
230extern byte *r_warpbuffer;
231
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