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.
24 entity_render_t *currentrenderentity;
26 int r_framecount; // used for dlight push checking
30 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;
32 qboolean envmap; // true during envmap command capture
47 mleaf_t *r_viewleaf, *r_oldviewleaf;
49 unsigned short d_lightstylevalue[256]; // 8.8 fraction of base light value
51 cvar_t r_drawentities = {0, "r_drawentities","1"};
52 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
53 cvar_t r_speeds = {0, "r_speeds","0"};
54 cvar_t r_fullbright = {0, "r_fullbright","0"};
55 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
56 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
57 cvar_t r_waterripple = {CVAR_SAVE, "r_waterripple","0"};
58 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
60 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
61 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
62 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
63 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
64 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
65 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
66 cvar_t gl_fogend = {0, "gl_fogend","0"};
68 cvar_t r_multitexture = {0, "r_multitexture", "1"};
74 For program optimization
77 qboolean intimerefresh = 0;
78 static void R_TimeRefresh_f (void)
81 float start, stop, time;
84 start = Sys_DoubleTime ();
85 for (i = 0;i < 128;i++)
87 r_refdef.viewangles[0] = 0;
88 r_refdef.viewangles[1] = i/128.0*360.0;
89 r_refdef.viewangles[2] = 0;
93 stop = Sys_DoubleTime ();
96 Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
99 extern cvar_t r_drawportals;
101 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
104 mnode_t *nodestack[8192], *node;
107 if (R_CullBox(mins, maxs))
110 node = cl.worldmodel->nodes;
112 if (node->contents < 0)
114 if (((mleaf_t *)node)->visframe == r_framecount)
118 node = nodestack[--stack];
122 sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
124 // recurse down the contacted sides
129 // put second child on the stack for later examination
130 nodestack[stack++] = node->children[1];
131 node = node->children[0];
136 node = node->children[0];
141 node = node->children[1];
147 float fog_density, fog_red, fog_green, fog_blue;
149 qboolean oldgl_fogenable;
150 void R_SetupFog(void)
152 if (gamemode == GAME_NEHAHRA)
154 if (gl_fogenable.integer)
156 oldgl_fogenable = true;
157 fog_density = gl_fogdensity.value;
158 fog_red = gl_fogred.value;
159 fog_green = gl_foggreen.value;
160 fog_blue = gl_fogblue.value;
162 else if (oldgl_fogenable)
164 oldgl_fogenable = false;
173 fogcolor[0] = fog_red = bound(0.0f, fog_red , 1.0f);
174 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
175 fogcolor[2] = fog_blue = bound(0.0f, fog_blue , 1.0f);
180 fogdensity = -4000.0f / (fog_density * fog_density);
181 // fog color was already set
187 // FIXME: move this to client?
190 if (gamemode == GAME_NEHAHRA)
192 Cvar_Set("gl_fogenable", "0");
193 Cvar_Set("gl_fogdensity", "0.2");
194 Cvar_Set("gl_fogred", "0.3");
195 Cvar_Set("gl_foggreen", "0.3");
196 Cvar_Set("gl_fogblue", "0.3");
198 fog_density = fog_red = fog_green = fog_blue = 0.0f;
201 // FIXME: move this to client?
202 void FOG_registercvars(void)
204 if (gamemode == GAME_NEHAHRA)
206 Cvar_RegisterVariable (&gl_fogenable);
207 Cvar_RegisterVariable (&gl_fogdensity);
208 Cvar_RegisterVariable (&gl_fogred);
209 Cvar_RegisterVariable (&gl_foggreen);
210 Cvar_RegisterVariable (&gl_fogblue);
211 Cvar_RegisterVariable (&gl_fogstart);
212 Cvar_RegisterVariable (&gl_fogend);
216 void gl_main_start(void)
220 void gl_main_shutdown(void)
224 void gl_main_newmap(void)
229 void GL_Main_Init(void)
231 // FIXME: move this to client?
233 Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
234 Cvar_RegisterVariable (&r_drawentities);
235 Cvar_RegisterVariable (&r_drawviewmodel);
236 Cvar_RegisterVariable (&r_speeds);
237 Cvar_RegisterVariable (&r_fullbrights);
238 Cvar_RegisterVariable (&r_wateralpha);
239 Cvar_RegisterVariable (&r_dynamic);
240 Cvar_RegisterVariable (&r_waterripple);
241 Cvar_RegisterVariable (&r_fullbright);
242 Cvar_RegisterVariable (&r_multitexture);
243 if (gamemode == GAME_NEHAHRA)
244 Cvar_SetValue("r_fullbrights", 0);
245 R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
253 void CL_ParseEntityLump(char *entitystring);
258 for (i=0 ; i<256 ; i++)
259 d_lightstylevalue[i] = 264; // normal light value
262 if (cl.worldmodel->entities)
263 CL_ParseEntityLump(cl.worldmodel->entities);
267 extern void R_Textures_Init(void);
268 extern void Mod_RenderInit(void);
269 extern void GL_Draw_Init(void);
270 extern void GL_Main_Init(void);
271 extern void GL_Models_Init(void);
272 extern void R_Sky_Init(void);
273 extern void GL_Surf_Init(void);
274 extern void R_Crosshairs_Init(void);
275 extern void R_Light_Init(void);
276 extern void R_Particles_Init(void);
277 extern void R_Explosion_Init(void);
278 extern void ui_init(void);
279 extern void gl_backend_init(void);
281 void Render_Init(void)
283 R_Modules_Shutdown();
305 extern char *ENGINE_EXTENSIONS;
308 VID_CheckExtensions();
310 // LordHavoc: report supported extensions
311 Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
313 qglCullFace(GL_FRONT);
314 qglEnable(GL_TEXTURE_2D);
318 //==================================================================================
320 void R_Entity_Callback(void *data, void *junk)
322 ((entity_render_t *)data)->visframe = r_framecount;
325 static void R_MarkEntities (void)
330 if (!r_drawentities.integer)
333 for (i = 0;i < r_refdef.numentities;i++)
335 currentrenderentity = r_refdef.entities[i];
336 Mod_CheckLoaded(currentrenderentity->model);
338 // move view-relative models to where they should be
339 if (currentrenderentity->flags & RENDER_VIEWMODEL)
341 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
342 currentrenderentity->flags -= RENDER_VIEWMODEL;
344 VectorCopy(currentrenderentity->origin, v);
345 currentrenderentity->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
346 currentrenderentity->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
347 currentrenderentity->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
349 VectorAdd(currentrenderentity->angles, r_refdef.viewangles, currentrenderentity->angles);
352 if (currentrenderentity->angles[0] || currentrenderentity->angles[2])
354 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmins, currentrenderentity->mins);
355 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmaxs, currentrenderentity->maxs);
357 else if (currentrenderentity->angles[1])
359 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmins, currentrenderentity->mins);
360 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmaxs, currentrenderentity->maxs);
364 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmins, currentrenderentity->mins);
365 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmaxs, currentrenderentity->maxs);
367 if (R_VisibleCullBox(currentrenderentity->mins, currentrenderentity->maxs))
370 R_LerpAnimation(currentrenderentity);
371 currentrenderentity->visframe = r_framecount;
375 // only used if skyrendermasked, and normally returns false
376 int R_DrawBModelSky (void)
380 if (!r_drawentities.integer)
383 for (i = 0;i < r_refdef.numentities;i++)
385 currentrenderentity = r_refdef.entities[i];
386 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawSky)
388 currentrenderentity->model->DrawSky();
395 void R_DrawModels (void)
399 if (!r_drawentities.integer)
402 for (i = 0;i < r_refdef.numentities;i++)
404 currentrenderentity = r_refdef.entities[i];
405 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->Draw)
406 currentrenderentity->model->Draw();
415 void R_DrawViewModel (void)
417 // FIXME: move these checks to client
418 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
421 currentrenderentity = &cl.viewent.render;
422 Mod_CheckLoaded(currentrenderentity->model);
424 R_LerpAnimation(currentrenderentity);
426 currentrenderentity->model->Draw();
429 static void R_SetFrustum (void)
433 // LordHavoc: note to all quake engine coders, the special case for 90
434 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
436 // rotate VPN right by FOV_X/2 degrees
437 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
438 // rotate VPN left by FOV_X/2 degrees
439 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
440 // rotate VPN up by FOV_X/2 degrees
441 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
442 // rotate VPN down by FOV_X/2 degrees
443 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
446 for (i=0 ; i<4 ; i++)
448 frustum[i].type = PLANE_ANYZ;
449 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
450 PlaneClassify(&frustum[i]);
459 static void R_SetupFrame (void)
461 // don't allow cheats in multiplayer
462 if (cl.maxclients > 1)
464 if (r_fullbright.integer != 0)
465 Cvar_Set ("r_fullbright", "0");
466 if (r_ambient.value != 0)
467 Cvar_Set ("r_ambient", "0");
469 if (r_multitexture.integer && gl_textureunits < 2)
470 Cvar_SetValue("r_multitexture", 0);
474 // build the transformation matrix for the given view angles
475 VectorCopy (r_refdef.vieworg, r_origin);
477 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
480 r_oldviewleaf = r_viewleaf;
481 r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
487 static int blendviewpolyindex[3] = {0, 1, 2};
489 static void R_BlendView(void)
492 float tvxyz[3][4], r;
494 if (r_refdef.viewblend[3] < 0.01f)
497 memset(&m, 0, sizeof(m));
498 m.transparent = false;
499 m.blendfunc1 = GL_SRC_ALPHA;
500 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
501 m.depthdisable = true; // magic
504 m.index = blendviewpolyindex;
505 m.vertex = &tvxyz[0][0];
506 m.vertexstep = sizeof(float[4]);
507 m.cr = r_refdef.viewblend[0];
508 m.cg = r_refdef.viewblend[1];
509 m.cb = r_refdef.viewblend[2];
510 m.ca = r_refdef.viewblend[3];
512 tvxyz[0][0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
513 tvxyz[0][1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
514 tvxyz[0][2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
516 tvxyz[1][0] = tvxyz[0][0] + vup[0] * r;
517 tvxyz[1][1] = tvxyz[0][1] + vup[1] * r;
518 tvxyz[1][2] = tvxyz[0][2] + vup[2] * r;
519 tvxyz[2][0] = tvxyz[0][0] + vright[0] * r;
520 tvxyz[2][1] = tvxyz[0][1] + vright[1] * r;
521 tvxyz[2][2] = tvxyz[0][2] + vright[2] * r;
529 r_refdef must be set before the first call
532 void R_RenderView (void)
535 return; //Host_Error ("R_RenderView: NULL worldmodel");
537 // FIXME: move to client
539 R_TimeReport("mexplosion");
549 R_TimeReport("setup");
552 R_TimeReport("worldnode");
555 R_TimeReport("markentity");
558 R_TimeReport("marklights");
562 if (R_DrawBModelSky())
563 R_TimeReport("bmodelsky");
568 R_TimeReport("viewmodel");
571 R_SetupForWorldRendering();
573 R_TimeReport("surfprep");
575 R_DrawSurfaces(SHADERSTAGE_SKY);
576 R_DrawSurfaces(SHADERSTAGE_NORMAL);
577 R_TimeReport("surfdraw");
579 if (r_drawportals.integer)
582 R_TimeReport("portals");
585 // don't let sound skip if going slow
586 if (!intimerefresh && !r_speeds.integer)
592 R_TimeReport("viewmodel");
596 R_TimeReport("models");
599 R_TimeReport("particles");
602 R_TimeReport("explosions");
604 // draw transparent meshs
605 R_Mesh_AddTransparent();
606 R_TimeReport("addtrans");
609 R_TimeReport("coronas");
612 R_TimeReport("blendview");
615 R_TimeReport("crosshair");
617 // render any queued meshs
619 R_TimeReport("meshfinish");