2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 extern float ixtable[4096];
27 // far clip distance for scene
28 extern float r_farclip;
31 extern void FOG_clear(void);
32 extern float fog_density, fog_red, fog_green, fog_blue;
35 extern int R_SetSkyBox(char* sky);
37 // these are exposed because surface rendering uses them
38 extern rtexture_t *solidskytexture;
39 extern rtexture_t *alphaskytexture;
40 extern int skyrendernow, skyrendermasked;
41 extern void R_SkyStartFrame(void);
42 extern void R_Sky(void);
44 // SHOWLMP stuff (Nehahra)
45 extern void SHOWLMP_decodehide(void);
46 extern void SHOWLMP_decodeshow(void);
47 extern void SHOWLMP_drawall(void);
48 extern void SHOWLMP_clear(void);
50 // render profiling stuff
51 extern qboolean intimerefresh;
52 extern char r_speeds_string[1024];
55 extern vec3_t lightspot;
56 extern cvar_t r_ambient;
57 extern int lightscalebit;
58 extern float lightscale;
60 // model rendering stuff
61 extern float *aliasvert;
62 extern float *aliasvertnorm;
63 extern float *aliasvertcolor;
66 extern cvar_t r_novis;
68 // detail texture stuff
69 extern cvar_t r_detailtextures;
71 // useful functions for rendering
72 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b);
73 void R_FillColors(float *out, int verts, float r, float g, float b, float a);
75 #define TOP_RANGE 16 // soldier uniform colors
76 #define BOTTOM_RANGE 96
78 //=============================================================================
80 extern int r_framecount;
81 extern mplane_t frustum[4];
82 extern int c_brush_polys, c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
91 extern vec3_t r_origin;
93 extern mleaf_t *r_viewleaf, *r_oldviewleaf;
94 extern unsigned short d_lightstylevalue[256]; // 8.8 fraction of base light value
96 extern qboolean envmap;
98 extern cvar_t r_drawentities;
99 extern cvar_t r_drawviewmodel;
100 extern cvar_t r_speeds;
101 extern cvar_t r_fullbright;
102 extern cvar_t r_wateralpha;
103 extern cvar_t r_dynamic;
106 void R_RenderView (void); // must set r_refdef first
109 void R_InitSky (qbyte *src, int bytesperpixel); // called at level load
111 void R_NewMap (void);
113 void R_DrawWorld(entity_render_t *ent);
114 void R_SurfMarkLights (entity_render_t *ent);
115 void R_PrepareSurfaces(entity_render_t *ent);
116 void R_DrawSurfaces(entity_render_t *ent, int type);
117 void R_DrawPortals(entity_render_t *ent);
118 void R_DrawParticles(void);
119 void R_DrawExplosions(void);
120 void R_DrawBrushModelSky (entity_render_t *ent);
121 void R_DrawBrushModelNormal (entity_render_t *ent);
122 void R_DrawZymoticModel (entity_render_t *ent);
123 void R_DrawQ1Q2AliasModel(entity_render_t *ent);
124 void R_DrawSpriteModel (entity_render_t *ent);
126 // LordHavoc: vertex transform
127 #include "transform.h"
129 #define gl_solid_format 3
130 #define gl_alpha_format 4
134 // LordHavoc: was a major time waster
135 #define R_CullBox(mins,maxs) (frustum[0].BoxOnPlaneSideFunc(mins, maxs, &frustum[0]) == 2 || frustum[1].BoxOnPlaneSideFunc(mins, maxs, &frustum[1]) == 2 || frustum[2].BoxOnPlaneSideFunc(mins, maxs, &frustum[2]) == 2 || frustum[3].BoxOnPlaneSideFunc(mins, maxs, &frustum[3]) == 2)
136 #define R_NotCulledBox(mins,maxs) (frustum[0].BoxOnPlaneSideFunc(mins, maxs, &frustum[0]) != 2 && frustum[1].BoxOnPlaneSideFunc(mins, maxs, &frustum[1]) != 2 && frustum[2].BoxOnPlaneSideFunc(mins, maxs, &frustum[2]) != 2 && frustum[3].BoxOnPlaneSideFunc(mins, maxs, &frustum[3]) != 2)
138 extern qboolean fogenabled;
139 extern vec3_t fogcolor;
140 extern vec_t fogdensity;
141 #define calcfog(v) (exp(-(fogdensity*fogdensity*(((v)[0] - r_origin[0])*((v)[0] - r_origin[0])+((v)[1] - r_origin[1])*((v)[1] - r_origin[1])+((v)[2] - r_origin[2])*((v)[2] - r_origin[2])))))
142 #define calcfogbyte(v) ((qbyte) (bound(0, ((int) ((float) (calcfog((v)) * 255.0f))), 255)))
144 // start a farclip measuring session
145 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip);
146 // enlarge farclip to accomodate box
147 void R_FarClip_Box(vec3_t mins, vec3_t maxs);
148 // return farclip value
149 float R_FarClip_Finish(void);
151 // updates farclip distance so it is large enough for the specified box
153 void R_Mesh_EnlargeFarClipBBox(vec3_t mins, vec3_t maxs);
155 #include "r_modules.h"
157 #include "meshqueue.h"
159 extern float overbrightscale;
161 #include "r_lerpanim.h"
163 extern cvar_t r_render;
166 extern cvar_t r_textureunits;
167 extern cvar_t gl_dither;
169 // FIXME: this should live in the backend only
170 void GL_LockArray(int first, int count);
171 void GL_UnlockArray(void);
173 #include "gl_backend.h"
177 void R_TimeReport(char *name);
178 void R_TimeReport_Start(void);
179 void R_TimeReport_End(void);
182 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2);
184 void R_DrawCrosshair(void);