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// r_local.h -- private refresh defs
21
22#ifndef GLQUAKE
23#include "r_shared.h"
24
25#define ALIAS_BASE_SIZE_RATIO		(1.0 / 11.0)
26					// normalizing factor so player model works out to about
27					//  1 pixel per triangle
28
29#define BMODEL_FULLY_CLIPPED	0x10 // value returned by R_BmodelCheckBBox ()
30									 //  if bbox is trivially rejected
31
32//===========================================================================
33// viewmodel lighting
34
35typedef struct {
36	int			ambientlight;
37	int			shadelight;
38	float		*plightvec;
39} alight_t;
40
41//===========================================================================
42// clipped bmodel edges
43
44typedef struct bedge_s
45{
46	mvertex_t		*v[2];
47	struct bedge_s	*pnext;
48} bedge_t;
49
50typedef struct {
51	float	fv[3];		// viewspace x, y
52} auxvert_t;
53
54//===========================================================================
55
56extern cvar_t	r_draworder;
57extern cvar_t	r_speeds;
58extern cvar_t	r_timegraph;
59extern cvar_t	r_graphheight;
60extern cvar_t	r_clearcolor;
61extern cvar_t	r_waterwarp;
62extern cvar_t	r_fullbright;
63extern cvar_t	r_drawentities;
64extern cvar_t	r_aliasstats;
65extern cvar_t	r_dspeeds;
66extern cvar_t	r_drawflat;
67extern cvar_t	r_ambient;
68extern cvar_t	r_reportsurfout;
69extern cvar_t	r_maxsurfs;
70extern cvar_t	r_numsurfs;
71extern cvar_t	r_reportedgeout;
72extern cvar_t	r_maxedges;
73extern cvar_t	r_numedges;
74
75#define XCENTERING	(1.0 / 2.0)
76#define YCENTERING	(1.0 / 2.0)
77
78#define CLIP_EPSILON		0.001
79
80#define BACKFACE_EPSILON	0.01
81
82//===========================================================================
83
84#define	DIST_NOT_SET	98765
85
86// !!! if this is changed, it must be changed in asm_draw.h too !!!
87typedef struct clipplane_s
88{
89	vec3_t		normal;
90	float		dist;
91	struct		clipplane_s	*next;
92	byte		leftedge;
93	byte		rightedge;
94	byte		reserved[2];
95} clipplane_t;
96
97extern	clipplane_t	view_clipplanes[4];
98
99//=============================================================================
100
101void R_RenderWorld (void);
102
103//=============================================================================
104
105extern	mplane_t	screenedge[4];
106
107extern	vec3_t	r_origin;
108
109extern	vec3_t	r_entorigin;
110
111extern	float	screenAspect;
112extern	float	verticalFieldOfView;
113extern	float	xOrigin, yOrigin;
114
115extern	int		r_visframecount;
116
117//=============================================================================
118
119extern int	vstartscan;
120
121
122void R_ClearPolyList (void);
123void R_DrawPolyList (void);
124
125//
126// current entity info
127//
128extern	qboolean		insubmodel;
129extern	vec3_t			r_worldmodelorg;
130
131
132void R_DrawSprite (void);
133void R_RenderFace (msurface_t *fa, int clipflags);
134void R_RenderPoly (msurface_t *fa, int clipflags);
135void R_RenderBmodelFace (bedge_t *pedges, msurface_t *psurf);
136void R_TransformPlane (mplane_t *p, float *normal, float *dist);
137void R_TransformFrustum (void);
138void R_SetSkyFrame (void);
139void R_DrawSurfaceBlock16 (void);
140void R_DrawSurfaceBlock8 (void);
141texture_t *R_TextureAnimation (texture_t *base);
142
143#if	id386
144
145void R_DrawSurfaceBlock8_mip0 (void);
146void R_DrawSurfaceBlock8_mip1 (void);
147void R_DrawSurfaceBlock8_mip2 (void);
148void R_DrawSurfaceBlock8_mip3 (void);
149
150#endif
151
152void R_GenSkyTile (void *pdest);
153void R_GenSkyTile16 (void *pdest);
154void R_Surf8Patch (void);
155void R_Surf16Patch (void);
156void R_DrawSubmodelPolygons (model_t *pmodel, int clipflags);
157void R_DrawSolidClippedSubmodelPolygons (model_t *pmodel);
158
159void R_AddPolygonEdges (emitpoint_t *pverts, int numverts, int miplevel);
160surf_t *R_GetSurf (void);
161void R_AliasDrawModel (alight_t *plighting);
162void R_BeginEdgeFrame (void);
163void R_ScanEdges (void);
164void D_DrawSurfaces (void);
165void R_InsertNewEdges (edge_t *edgestoadd, edge_t *edgelist);
166void R_StepActiveU (edge_t *pedge);
167void R_RemoveEdges (edge_t *pedge);
168
169extern void R_Surf8Start (void);
170extern void R_Surf8End (void);
171extern void R_Surf16Start (void);
172extern void R_Surf16End (void);
173extern void R_EdgeCodeStart (void);
174extern void R_EdgeCodeEnd (void);
175
176extern void R_RotateBmodel (void);
177
178extern int	c_faceclip;
179extern int	r_polycount;
180extern int	r_wholepolycount;
181
182extern	model_t		*cl_worldmodel;
183
184extern int		*pfrustum_indexes[4];
185
186// !!! if this is changed, it must be changed in asm_draw.h too !!!
187#define	NEAR_CLIP	0.01
188
189extern int			ubasestep, errorterm, erroradjustup, erroradjustdown;
190extern int			vstartscan;
191
192extern fixed16_t	sadjust, tadjust;
193extern fixed16_t	bbextents, bbextentt;
194
195#define MAXBVERTINDEXES	1000	// new clipped vertices when clipping bmodels
196								//  to the world BSP
197extern mvertex_t	*r_ptverts, *r_ptvertsmax;
198
199extern vec3_t			sbaseaxis[3], tbaseaxis[3];
200extern float			entity_rotation[3][3];
201
202extern int		reinit_surfcache;
203
204extern int		r_currentkey;
205extern int		r_currentbkey;
206
207typedef struct btofpoly_s {
208	int			clipflags;
209	msurface_t	*psurf;
210} btofpoly_t;
211
212#define MAX_BTOFPOLYS	5000	// FIXME: tune this
213
214extern int			numbtofpolys;
215extern btofpoly_t	*pbtofpolys;
216
217void	R_InitTurb (void);
218void	R_ZDrawSubmodelPolys (model_t *clmodel);
219
220//=========================================================
221// Alias models
222//=========================================================
223
224#define MAXALIASVERTS		2000	// TODO: tune this
225#define ALIAS_Z_CLIP_PLANE	5
226
227extern int				numverts;
228extern int				a_skinwidth;
229extern mtriangle_t		*ptriangles;
230extern int				numtriangles;
231extern aliashdr_t		*paliashdr;
232extern mdl_t			*pmdl;
233extern float			leftclip, topclip, rightclip, bottomclip;
234extern int				r_acliptype;
235extern finalvert_t		*pfinalverts;
236extern auxvert_t		*pauxverts;
237
238qboolean R_AliasCheckBBox (void);
239
240//=========================================================
241// turbulence stuff
242
243#define	AMP		8*0x10000
244#define	AMP2	3
245#define	SPEED	20
246
247//=========================================================
248// particle stuff
249
250void R_DrawParticles (void);
251void R_InitParticles (void);
252void R_ClearParticles (void);
253void R_ReadPointFile_f (void);
254void R_SurfacePatch (void);
255
256extern int		r_amodels_drawn;
257extern edge_t	*auxedges;
258extern int		r_numallocatededges;
259extern edge_t	*r_edges, *edge_p, *edge_max;
260
261extern	edge_t	*newedges[MAXHEIGHT];
262extern	edge_t	*removeedges[MAXHEIGHT];
263
264extern	int	screenwidth;
265
266// FIXME: make stack vars when debugging done
267extern	edge_t	edge_head;
268extern	edge_t	edge_tail;
269extern	edge_t	edge_aftertail;
270extern int		r_bmodelactive;
271extern vrect_t	*pconupdate;
272
273extern float		aliasxscale, aliasyscale, aliasxcenter, aliasycenter;
274extern float		r_aliastransition, r_resfudge;
275
276extern int		r_outofsurfaces;
277extern int		r_outofedges;
278
279extern mvertex_t	*r_pcurrentvertbase;
280extern int			r_maxvalidedgeoffset;
281
282void R_AliasClipTriangle (mtriangle_t *ptri);
283
284extern float	r_time1;
285extern float	dp_time1, dp_time2, db_time1, db_time2, rw_time1, rw_time2;
286extern float	se_time1, se_time2, de_time1, de_time2, dv_time1, dv_time2;
287extern int		r_frustum_indexes[4*6];
288extern int		r_maxsurfsseen, r_maxedgesseen, r_cnumsurfs;
289extern qboolean	r_surfsonstack;
290extern cshift_t	cshift_water;
291extern qboolean	r_dowarpold, r_viewchanged;
292
293extern mleaf_t	*r_viewleaf, *r_oldviewleaf;
294
295extern vec3_t	r_emins, r_emaxs;
296extern mnode_t	*r_pefragtopnode;
297extern int		r_clipflags;
298extern int		r_dlightframecount;
299extern qboolean	r_fov_greater_than_90;
300
301void R_StoreEfrags (efrag_t **ppefrag);
302void R_TimeRefresh_f (void);
303void R_TimeGraph (void);
304void R_PrintAliasStats (void);
305void R_PrintTimes (void);
306void R_PrintDSpeeds (void);
307void R_AnimateLight (void);
308int R_LightPoint (vec3_t p);
309void R_SetupFrame (void);
310void R_cshift_f (void);
311void R_EmitEdge (mvertex_t *pv0, mvertex_t *pv1);
312void R_ClipEdge (mvertex_t *pv0, mvertex_t *pv1, clipplane_t *clip);
313void R_SplitEntityOnNode2 (mnode_t *node);
314void R_MarkLights (dlight_t *light, int bit, mnode_t *node);
315
316#endif
317