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 entity_render_t *currentrenderentity;
81 extern int r_framecount;
82 extern mplane_t frustum[4];
83 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;
92 extern vec3_t r_origin;
94 extern mleaf_t *r_viewleaf, *r_oldviewleaf;
95 extern unsigned short d_lightstylevalue[256]; // 8.8 fraction of base light value
97 extern qboolean envmap;
99 extern cvar_t r_drawentities;
100 extern cvar_t r_drawviewmodel;
101 extern cvar_t r_speeds;
102 extern cvar_t r_fullbright;
103 extern cvar_t r_wateralpha;
104 extern cvar_t r_dynamic;
107 void R_RenderView (void); // must set r_refdef first
110 void R_InitSky (qbyte *src, int bytesperpixel); // called at level load
112 void R_NewMap (void);
114 void R_DrawWorld(void);
115 void R_SetupForWorldRendering(void);
116 void R_MarkWorldLights(void);
117 void R_PrepareSurfaces(void);
118 void R_DrawSurfaces(int type);
119 void R_DrawPortals(void);
120 void R_DrawParticles(void);
121 void R_DrawExplosions(void);
123 // LordHavoc: vertex transform
124 #include "transform.h"
126 #define gl_solid_format 3
127 #define gl_alpha_format 4
131 // LordHavoc: was a major time waster
132 #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)
133 #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)
135 extern qboolean fogenabled;
136 extern vec3_t fogcolor;
137 extern vec_t fogdensity;
138 #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])))))
139 #define calcfogbyte(v) ((qbyte) (bound(0, ((int) ((float) (calcfog((v)) * 255.0f))), 255)))
141 // start a farclip measuring session
142 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip);
143 // enlarge farclip to accomodate box
144 void R_FarClip_Box(vec3_t mins, vec3_t maxs);
145 // return farclip value
146 float R_FarClip_Finish(void);
148 // updates farclip distance so it is large enough for the specified box
150 void R_Mesh_EnlargeFarClipBBox(vec3_t mins, vec3_t maxs);
152 #include "r_modules.h"
154 extern float overbrightscale;
156 #include "r_lerpanim.h"
158 void R_DrawBrushModelSky (void);
159 void R_DrawBrushModelNormal (void);
160 void R_DrawAliasModel (void);
161 void R_DrawSpriteModel (void);
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);