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 #define TOP_RANGE 16 // soldier uniform colors
69 #define BOTTOM_RANGE 96
71 //=============================================================================
73 extern entity_render_t *currentrenderentity;
74 extern int r_framecount;
75 extern mplane_t frustum[4];
76 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;
85 extern vec3_t r_origin;
87 extern mleaf_t *r_viewleaf, *r_oldviewleaf;
88 extern unsigned short d_lightstylevalue[256]; // 8.8 fraction of base light value
90 extern qboolean envmap;
92 extern cvar_t r_drawentities;
93 extern cvar_t r_drawviewmodel;
94 extern cvar_t r_speeds;
95 extern cvar_t r_fullbright;
96 extern cvar_t r_wateralpha;
97 extern cvar_t r_dynamic;
100 void R_RenderView (void); // must set r_refdef first
103 void R_InitSky (qbyte *src, int bytesperpixel); // called at level load
105 void R_NewMap (void);
107 void R_DrawWorld(void);
108 void R_SetupForWorldRendering(void);
109 void R_MarkWorldLights(void);
110 void R_PrepareSurfaces(void);
111 void R_DrawSurfaces(int type);
112 void R_DrawPortals(void);
113 void R_DrawParticles(void);
114 void R_DrawExplosions(void);
116 // LordHavoc: vertex transform
117 #include "transform.h"
119 #define gl_solid_format 3
120 #define gl_alpha_format 4
124 // LordHavoc: was a major time waster
125 #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)
126 #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)
128 extern qboolean fogenabled;
129 extern vec3_t fogcolor;
130 extern vec_t fogdensity;
131 #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])))))
132 #define calcfogbyte(v) ((qbyte) (bound(0, ((int) ((float) (calcfog((v)) * 255.0f))), 255)))
134 // start a farclip measuring session
135 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip);
136 // enlarge farclip to accomodate box
137 void R_FarClip_Box(vec3_t mins, vec3_t maxs);
138 // return farclip value
139 float R_FarClip_Finish(void);
141 // updates farclip distance so it is large enough for the specified box
143 void R_Mesh_EnlargeFarClipBBox(vec3_t mins, vec3_t maxs);
145 #include "r_modules.h"
147 extern float overbrightscale;
149 #include "r_lerpanim.h"
151 void R_DrawBrushModelSky (void);
152 void R_DrawBrushModelNormal (void);
153 void R_DrawAliasModel (void);
154 void R_DrawSpriteModel (void);
156 extern cvar_t r_render;
159 extern cvar_t r_multitexture;
160 extern cvar_t gl_dither;
162 // FIXME: this should live in the backend only
163 void GL_LockArray(int first, int count);
164 void GL_UnlockArray(void);
166 #include "gl_backend.h"
170 void R_TimeReport(char *name);
171 void R_TimeReport_Start(void);
172 void R_TimeReport_End(void);
175 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2);
177 void R_DrawCrosshair(void);