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 // used for dlight push checking and other things
29 matrix4x4_t r_identitymatrix;
31 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
33 // true during envmap command capture
49 // 8.8 fraction of base light value
50 unsigned short d_lightstylevalue[256];
52 cvar_t r_drawentities = {0, "r_drawentities","1"};
53 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
54 cvar_t r_shadows = {CVAR_SAVE, "r_shadows", "1"};
55 cvar_t r_staticworldlights = {0, "r_staticworldlights", "0"};
56 cvar_t r_speeds = {0, "r_speeds","0"};
57 cvar_t r_fullbright = {0, "r_fullbright","0"};
58 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
59 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
60 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
62 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
63 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
64 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
65 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
66 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
67 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
68 cvar_t gl_fogend = {0, "gl_fogend","0"};
70 cvar_t r_textureunits = {0, "r_textureunits", "32"};
72 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
75 for (i = 0;i < verts;i++)
86 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
89 for (i = 0;i < verts;i++)
103 For program optimization
106 qboolean intimerefresh = 0;
107 static void R_TimeRefresh_f (void)
110 float start, stop, time;
113 start = Sys_DoubleTime ();
114 for (i = 0;i < 128;i++)
116 r_refdef.viewangles[0] = 0;
117 r_refdef.viewangles[1] = i/128.0*360.0;
118 r_refdef.viewangles[2] = 0;
122 stop = Sys_DoubleTime ();
125 Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
130 float fog_density, fog_red, fog_green, fog_blue;
132 qboolean oldgl_fogenable;
133 void R_SetupFog(void)
135 if (gamemode == GAME_NEHAHRA)
137 if (gl_fogenable.integer)
139 oldgl_fogenable = true;
140 fog_density = gl_fogdensity.value;
141 fog_red = gl_fogred.value;
142 fog_green = gl_foggreen.value;
143 fog_blue = gl_fogblue.value;
145 else if (oldgl_fogenable)
147 oldgl_fogenable = false;
156 fogcolor[0] = fog_red = bound(0.0f, fog_red , 1.0f);
157 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
158 fogcolor[2] = fog_blue = bound(0.0f, fog_blue , 1.0f);
163 fogdensity = -4000.0f / (fog_density * fog_density);
164 // fog color was already set
170 // FIXME: move this to client?
173 if (gamemode == GAME_NEHAHRA)
175 Cvar_Set("gl_fogenable", "0");
176 Cvar_Set("gl_fogdensity", "0.2");
177 Cvar_Set("gl_fogred", "0.3");
178 Cvar_Set("gl_foggreen", "0.3");
179 Cvar_Set("gl_fogblue", "0.3");
181 fog_density = fog_red = fog_green = fog_blue = 0.0f;
184 // FIXME: move this to client?
185 void FOG_registercvars(void)
187 if (gamemode == GAME_NEHAHRA)
189 Cvar_RegisterVariable (&gl_fogenable);
190 Cvar_RegisterVariable (&gl_fogdensity);
191 Cvar_RegisterVariable (&gl_fogred);
192 Cvar_RegisterVariable (&gl_foggreen);
193 Cvar_RegisterVariable (&gl_fogblue);
194 Cvar_RegisterVariable (&gl_fogstart);
195 Cvar_RegisterVariable (&gl_fogend);
199 void gl_main_start(void)
203 void gl_main_shutdown(void)
207 extern void CL_ParseEntityLump(char *entitystring);
208 void gl_main_newmap(void)
210 if (cl.worldmodel && cl.worldmodel->entities)
211 CL_ParseEntityLump(cl.worldmodel->entities);
215 void GL_Main_Init(void)
217 Matrix4x4_CreateIdentity(&r_identitymatrix);
218 // FIXME: move this to client?
220 Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
221 Cvar_RegisterVariable (&r_drawentities);
222 Cvar_RegisterVariable (&r_drawviewmodel);
223 Cvar_RegisterVariable (&r_shadows);
224 Cvar_RegisterVariable (&r_staticworldlights);
225 Cvar_RegisterVariable (&r_speeds);
226 Cvar_RegisterVariable (&r_fullbrights);
227 Cvar_RegisterVariable (&r_wateralpha);
228 Cvar_RegisterVariable (&r_dynamic);
229 Cvar_RegisterVariable (&r_fullbright);
230 Cvar_RegisterVariable (&r_textureunits);
231 if (gamemode == GAME_NEHAHRA)
232 Cvar_SetValue("r_fullbrights", 0);
233 R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
236 vec3_t r_farclip_origin;
237 vec3_t r_farclip_direction;
238 vec_t r_farclip_directiondist;
239 vec_t r_farclip_meshfarclip;
240 int r_farclip_directionbit0;
241 int r_farclip_directionbit1;
242 int r_farclip_directionbit2;
244 // start a farclip measuring session
245 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
247 VectorCopy(origin, r_farclip_origin);
248 VectorCopy(direction, r_farclip_direction);
249 r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
250 r_farclip_directionbit0 = r_farclip_direction[0] < 0;
251 r_farclip_directionbit1 = r_farclip_direction[1] < 0;
252 r_farclip_directionbit2 = r_farclip_direction[2] < 0;
253 r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
256 // enlarge farclip to accomodate box
257 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
260 d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
261 + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
262 + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
263 if (r_farclip_meshfarclip < d)
264 r_farclip_meshfarclip = d;
267 // return farclip value
268 float R_FarClip_Finish(void)
270 return r_farclip_meshfarclip - r_farclip_directiondist;
283 extern void R_Textures_Init(void);
284 extern void Mod_RenderInit(void);
285 extern void GL_Draw_Init(void);
286 extern void GL_Main_Init(void);
287 extern void R_Shadow_Init(void);
288 extern void GL_Models_Init(void);
289 extern void R_Sky_Init(void);
290 extern void GL_Surf_Init(void);
291 extern void R_Crosshairs_Init(void);
292 extern void R_Light_Init(void);
293 extern void R_Particles_Init(void);
294 extern void R_Explosion_Init(void);
295 extern void ui_init(void);
296 extern void gl_backend_init(void);
297 extern void Sbar_Init(void);
299 void Render_Init(void)
324 extern char *ENGINE_EXTENSIONS;
327 VID_CheckExtensions();
329 // LordHavoc: report supported extensions
330 Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
333 int R_CullBox(const vec3_t emins, const vec3_t emaxs)
337 for (i = 0;i < 4;i++)
344 if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
348 if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
352 if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
356 if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
360 if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
364 if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
368 if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
372 if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
380 int R_NotCulledBox(const vec3_t emins, const vec3_t emaxs)
384 for (i = 0;i < 4;i++)
391 if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
395 if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
399 if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
403 if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
407 if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
411 if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
415 if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
419 if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
428 //==================================================================================
430 static void R_MarkEntities (void)
434 entity_render_t *ent;
436 ent = &cl_entities[0].render;
437 Matrix4x4_CreateIdentity(&ent->matrix);
438 Matrix4x4_CreateIdentity(&ent->inversematrix);
441 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
443 if (!r_drawentities.integer)
446 for (i = 0;i < r_refdef.numentities;i++)
448 ent = r_refdef.entities[i];
449 Mod_CheckLoaded(ent->model);
451 // move view-relative models to where they should be
452 if (ent->flags & RENDER_VIEWMODEL)
454 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
455 ent->flags -= RENDER_VIEWMODEL;
457 VectorCopy(ent->origin, v);
458 ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
459 ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
460 ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
462 VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
465 VectorCopy(ent->angles, v);
466 if (!ent->model || ent->model->type != mod_brush)
468 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
469 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
470 R_LerpAnimation(ent);
471 R_UpdateEntLights(ent);
472 if (R_NotCulledBox(ent->mins, ent->maxs))
474 ent->visframe = r_framecount;
475 R_FarClip_Box(ent->mins, ent->maxs);
480 // only used if skyrendermasked, and normally returns false
481 int R_DrawBrushModelsSky (void)
484 entity_render_t *ent;
486 if (!r_drawentities.integer)
490 for (i = 0;i < r_refdef.numentities;i++)
492 ent = r_refdef.entities[i];
493 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
495 ent->model->DrawSky(ent);
507 void R_DrawViewModel (void)
509 entity_render_t *ent;
511 // FIXME: move these checks to client
512 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
515 ent = &cl.viewent.render;
516 Mod_CheckLoaded(ent->model);
517 R_LerpAnimation(ent);
518 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
519 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
520 R_UpdateEntLights(ent);
521 ent->model->Draw(ent);
524 void R_DrawNoModel(entity_render_t *ent);
525 void R_DrawModels (int baselighting)
528 entity_render_t *ent;
530 if (!r_drawentities.integer)
534 for (i = 0;i < r_refdef.numentities;i++)
536 ent = r_refdef.entities[i];
537 if (ent->visframe == r_framecount)
541 if (baselighting && ent->model->DrawBaseLighting != NULL)
543 if (ent->model->DrawBaseLighting)
544 ent->model->DrawBaseLighting(ent);
546 else if (ent->model->Draw)
547 ent->model->Draw(ent);
555 void R_DrawFakeShadows (void)
558 entity_render_t *ent;
560 ent = &cl_entities[0].render;
561 if (ent->model && ent->model->DrawFakeShadow)
562 ent->model->DrawFakeShadow(ent);
564 if (!r_drawentities.integer)
566 for (i = 0;i < r_refdef.numentities;i++)
568 ent = r_refdef.entities[i];
569 if (ent->model && ent->model->DrawFakeShadow)
570 ent->model->DrawFakeShadow(ent);
574 #include "r_shadow.h"
576 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float lightradius, int visiblevolume)
579 vec3_t p, p2, temp, relativelightorigin;
580 float dist, projectdistance;
582 if (ent->model && ent->model->DrawShadowVolume)
584 temp[0] = bound(ent->mins[0], lightorigin[0], ent->maxs[0]) - lightorigin[0];
585 temp[1] = bound(ent->mins[1], lightorigin[1], ent->maxs[1]) - lightorigin[1];
586 temp[2] = bound(ent->mins[2], lightorigin[2], ent->maxs[2]) - lightorigin[2];
587 dist = DotProduct(temp, temp);
588 if (dist < lightradius * lightradius)
590 projectdistance = lightradius - sqrt(dist);
594 // calculate projected bounding box and decide if it is on-screen
599 for (i = 0;i < 8;i++)
601 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
602 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
603 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
604 VectorSubtract(p, lightorigin, temp);
605 dist = projectdistance / sqrt(DotProduct(temp, temp));
606 VectorMA(p, dist, temp, p2);
607 if (!d0 && (DotProduct(p , frustum[0].normal) < frustum[0].dist || DotProduct(p2, frustum[0].normal) < frustum[0].dist))
609 if (!d1 && (DotProduct(p , frustum[1].normal) < frustum[1].dist || DotProduct(p2, frustum[1].normal) < frustum[1].dist))
611 if (!d2 && (DotProduct(p , frustum[2].normal) < frustum[2].dist || DotProduct(p2, frustum[2].normal) < frustum[2].dist))
613 if (!d3 && (DotProduct(p , frustum[3].normal) < frustum[3].dist || DotProduct(p2, frustum[3].normal) < frustum[3].dist))
616 if (d0 && d1 && d2 && d3)
619 // calculate projected bounding box and decide if it is on-screen
620 VectorCopy(ent->mins, mins);
621 VectorCopy(ent->maxs, maxs);
622 for (i = 0;i < 8;i++)
624 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
625 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
626 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
627 VectorSubtract(p, lightorigin, temp);
628 dist = projectdistance / sqrt(DotProduct(temp, temp));
629 VectorMA(p, dist, temp, p2);
630 if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
631 if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
632 if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
634 if (R_NotCulledBox(mins, maxs))
637 Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
638 ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius, visiblevolume);
645 void R_DrawWorldLightShadowVolume(mlight_t *sl, int visiblevolume)
648 R_Mesh_Matrix(&cl_entities[0].render.matrix);
649 for (mesh = sl->shadowvolume;mesh;mesh = mesh->next)
651 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
652 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements, visiblevolume);
656 void R_DrawShadowVolumes (void)
659 entity_render_t *ent;
660 vec3_t mins, maxs;//, relativelightorigin;
665 for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
667 if (d_lightstylevalue[sl->style] <= 0)
669 if (r_light_debuglight.integer >= 0 && lnum != r_light_debuglight.integer)
672 mins[0] = sl->origin[0] - sl->cullradius;
673 maxs[0] = sl->origin[0] + sl->cullradius;
674 mins[1] = sl->origin[1] - sl->cullradius;
675 maxs[1] = sl->origin[1] + sl->cullradius;
676 mins[2] = sl->origin[2] - sl->cullradius;
677 maxs[2] = sl->origin[2] + sl->cullradius;
678 if (R_CullBox(mins, maxs))
681 if (R_CullBox(sl->mins, sl->maxs))
683 memset(&m, 0, sizeof(m));
684 m.blendfunc1 = GL_ONE;
685 m.blendfunc2 = GL_ONE;
687 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
688 if (sl->shadowvolume && r_staticworldlights.integer)
689 R_DrawWorldLightShadowVolume(sl, true);
692 ent = &cl_entities[0].render;
693 R_TestAndDrawShadowVolume(ent, sl->origin, sl->cullradius, true);
696 ent = &cl_entities[0].render;
697 if (ent->model && ent->model->DrawShadowVolume && ent->maxs[0] >= mins[0] && ent->mins[0] <= maxs[0] && ent->maxs[1] >= mins[1] && ent->mins[1] <= maxs[1] && ent->maxs[2] >= mins[2] && ent->mins[2] <= maxs[2])
699 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
700 ent->model->DrawShadowVolume (ent, relativelightorigin, sl->cullradius, true);
703 if (r_drawentities.integer)
705 for (i = 0;i < r_refdef.numentities;i++)
707 ent = r_refdef.entities[i];
709 if (ent->mins[0] <= sl->maxs[0]
710 && ent->maxs[0] >= sl->mins[0]
711 && ent->mins[1] <= sl->maxs[1]
712 && ent->maxs[1] >= sl->mins[1]
713 && ent->mins[2] <= sl->maxs[2]
714 && ent->maxs[2] >= sl->mins[2])
716 R_TestAndDrawShadowVolume(ent, sl->origin, sl->cullradius, true);
718 ent = r_refdef.entities[i];
719 if (ent->model && ent->model->DrawShadowVolume && ent->maxs[0] >= mins[0] && ent->mins[0] <= maxs[0] && ent->maxs[1] >= mins[1] && ent->mins[1] <= maxs[1] && ent->maxs[2] >= mins[2] && ent->mins[2] <= maxs[2])
721 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
722 ent->model->DrawShadowVolume (ent, relativelightorigin, sl->cullradius, true);
729 for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
731 mins[0] = rd->origin[0] - rd->cullradius;
732 maxs[0] = rd->origin[0] + rd->cullradius;
733 mins[1] = rd->origin[1] - rd->cullradius;
734 maxs[1] = rd->origin[1] + rd->cullradius;
735 mins[2] = rd->origin[2] - rd->cullradius;
736 maxs[2] = rd->origin[2] + rd->cullradius;
737 if (R_CullBox(mins, maxs))
739 memset(&m, 0, sizeof(m));
740 m.blendfunc1 = GL_ONE;
741 m.blendfunc2 = GL_ONE;
743 GL_Color(0.1 * r_colorscale, 0.0125 * r_colorscale, 0.0 * r_colorscale, 1);
744 ent = &cl_entities[0].render;
746 R_TestAndDrawShadowVolume(ent, rd->origin, rd->cullradius, true);
748 ent = &cl_entities[0].render;
749 if (ent != rd->ent && ent->model && ent->model->DrawShadowVolume && ent->maxs[0] >= mins[0] && ent->mins[0] <= maxs[0] && ent->maxs[1] >= mins[1] && ent->mins[1] <= maxs[1] && ent->maxs[2] >= mins[2] && ent->mins[2] <= maxs[2])
751 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
752 ent->model->DrawShadowVolume (ent, relativelightorigin, rd->cullradius, true);
755 if (r_drawentities.integer)
757 for (i = 0;i < r_refdef.numentities;i++)
759 ent = r_refdef.entities[i];
761 R_TestAndDrawShadowVolume(ent, rd->origin, rd->cullradius, true);
763 ent = r_refdef.entities[i];
764 if (ent != rd->ent && ent->model && ent->model->DrawShadowVolume && ent->maxs[0] >= mins[0] && ent->mins[0] <= maxs[0] && ent->maxs[1] >= mins[1] && ent->mins[1] <= maxs[1] && ent->maxs[2] >= mins[2] && ent->mins[2] <= maxs[2])
766 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
767 ent->model->DrawShadowVolume (ent, relativelightorigin, rd->cullradius, true);
775 #define SHADOWSPHERE_SEGMENTS 16
777 shadowmesh_t *shadowsphere;
778 void R_CreateShadowSphere(void)
781 vec3_t angles, angles2, angles3, angles4;
783 shadowsphere = Mod_ShadowMesh_Begin(zonemempool);
784 for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
786 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
788 angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
789 angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
791 VectorCopy(angles, angles2);
792 VectorCopy(angles, angles3);
793 VectorCopy(angles, angles4);
794 angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
795 angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
796 angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
797 angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
798 AngleVectorsFLU(angles, verts, NULL, NULL);
799 AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
800 AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
801 AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
802 VectorScale(&verts[0], 1.0f, &verts[0]);
803 VectorScale(&verts[3], 1.0f, &verts[3]);
804 VectorScale(&verts[6], 1.0f, &verts[6]);
805 VectorScale(&verts[9], 1.0f, &verts[9]);
806 Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
808 AngleVectorsFLU(angles, verts, NULL, NULL);
809 AngleVectorsFLU(angles2, verts + 3, NULL, NULL);
810 AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
811 AngleVectorsFLU(angles4, verts + 9, NULL, NULL);
812 VectorScale(&verts[0], -4.0f, &verts[0]);
813 VectorScale(&verts[3], -4.0f, &verts[3]);
814 VectorScale(&verts[6], -4.0f, &verts[6]);
815 VectorScale(&verts[9], -4.0f, &verts[9]);
816 Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
820 shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
824 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius, int visiblevolume)
829 R_CreateShadowSphere();
830 Matrix4x4_CreateScale(&matrix, lightradius);
831 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
832 R_Mesh_Matrix(&matrix);
833 for (mesh = shadowsphere;mesh;mesh = mesh->next)
835 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
836 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements, visiblevolume);
838 Matrix4x4_CreateScale(&matrix, -cullradius);
839 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
840 R_Mesh_Matrix(&matrix);
841 for (mesh = shadowsphere;mesh;mesh = mesh->next)
843 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
844 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements, visiblevolume);
848 void R_ShadowVolumeLighting (void)
851 entity_render_t *ent;
854 vec3_t mins, maxs, relativelightorigin, relativeeyeorigin, lightcolor;
858 R_Shadow_Stage_Begin();
859 for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
861 if (d_lightstylevalue[sl->style] <= 0)
863 if (r_light_debuglight.integer >= 0 && lnum != r_light_debuglight.integer)
865 VectorCopy(sl->mins, mins);
866 VectorCopy(sl->maxs, maxs);
867 if (R_CullBox(mins, maxs))
870 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
871 VectorScale(sl->light, f, lightcolor);
873 R_Shadow_Stage_ShadowVolumes();
874 R_DrawShadowSphere(sl->origin, sl->cullradius, sl->lightradius * 2, false);
875 if (sl->shadowvolume && r_staticworldlights.integer)
876 R_DrawWorldLightShadowVolume(sl, false);
878 R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, sl->cullradius, false);
879 if (r_drawentities.integer)
881 for (i = 0;i < r_refdef.numentities;i++)
883 ent = r_refdef.entities[i];
885 if (ent->maxs[0] >= mins[0]
886 && ent->mins[0] <= maxs[0]
887 && ent->maxs[1] >= mins[1]
888 && ent->mins[1] <= maxs[1]
889 && ent->maxs[2] >= mins[2]
890 && ent->mins[2] <= maxs[2])
892 R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, sl->cullradius, false);
896 R_Shadow_Stage_Light();
897 ent = &cl_entities[0].render;
898 if (ent->model && ent->model->DrawLight)
900 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
901 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
902 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, sl->lightradius, sl->distbias, sl->subtract, lightcolor);
904 if (r_drawentities.integer)
906 for (i = 0;i < r_refdef.numentities;i++)
908 ent = r_refdef.entities[i];
909 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
911 && ent->maxs[0] >= mins[0]
912 && ent->mins[0] <= maxs[0]
913 && ent->maxs[1] >= mins[1]
914 && ent->mins[1] <= maxs[1]
915 && ent->maxs[2] >= mins[2]
916 && ent->mins[2] <= maxs[2]*/)
918 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
919 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
920 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, sl->lightradius, sl->distbias, sl->subtract, lightcolor);
925 for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
927 mins[0] = rd->origin[0] - rd->cullradius;
928 maxs[0] = rd->origin[0] + rd->cullradius;
929 mins[1] = rd->origin[1] - rd->cullradius;
930 maxs[1] = rd->origin[1] + rd->cullradius;
931 mins[2] = rd->origin[2] - rd->cullradius;
932 maxs[2] = rd->origin[2] + rd->cullradius;
933 if (R_CullBox(mins, maxs))
936 R_Shadow_Stage_ShadowVolumes();
937 R_TestAndDrawShadowVolume(&cl_entities[0].render, rd->origin, rd->cullradius, false);
938 if (r_drawentities.integer)
940 for (i = 0;i < r_refdef.numentities;i++)
942 ent = r_refdef.entities[i];
944 if (ent->maxs[0] >= mins[0]
945 && ent->mins[0] <= maxs[0]
946 && ent->maxs[1] >= mins[1]
947 && ent->mins[1] <= maxs[1]
948 && ent->maxs[2] >= mins[2]
949 && ent->mins[2] <= maxs[2])
951 R_TestAndDrawShadowVolume(ent, rd->origin, rd->cullradius, false);
955 R_Shadow_Stage_Light();
956 ent = &cl_entities[0].render;
957 if (ent->model && ent->model->DrawLight)
959 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
960 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
961 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, rd->cullradius, LIGHTOFFSET, rd->subtract, rd->light);
963 if (r_drawentities.integer)
965 for (i = 0;i < r_refdef.numentities;i++)
967 ent = r_refdef.entities[i];
968 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
970 && ent->maxs[0] >= mins[0]
971 && ent->mins[0] <= maxs[0]
972 && ent->maxs[1] >= mins[1]
973 && ent->mins[1] <= maxs[1]
974 && ent->maxs[2] >= mins[2]
975 && ent->mins[2] <= maxs[2]*/)
977 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
978 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
979 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, rd->cullradius, LIGHTOFFSET, rd->subtract, rd->light);
985 R_Shadow_Stage_End();
988 static void R_SetFrustum (void)
992 // LordHavoc: note to all quake engine coders, the special case for 90
993 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
995 // rotate VPN right by FOV_X/2 degrees
996 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
997 // rotate VPN left by FOV_X/2 degrees
998 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
999 // rotate VPN up by FOV_X/2 degrees
1000 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1001 // rotate VPN down by FOV_X/2 degrees
1002 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1004 for (i = 0;i < 4;i++)
1006 frustum[i].type = PLANE_ANYZ;
1007 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
1008 PlaneClassify(&frustum[i]);
1017 static void R_SetupFrame (void)
1019 // don't allow cheats in multiplayer
1020 if (cl.maxclients > 1)
1022 if (r_fullbright.integer != 0)
1023 Cvar_Set ("r_fullbright", "0");
1024 if (r_ambient.value != 0)
1025 Cvar_Set ("r_ambient", "0");
1030 // build the transformation matrix for the given view angles
1031 VectorCopy (r_refdef.vieworg, r_origin);
1033 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1039 static void R_BlendView(void)
1044 if (r_refdef.viewblend[3] < 0.01f)
1047 memset(&m, 0, sizeof(m));
1048 m.blendfunc1 = GL_SRC_ALPHA;
1049 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1050 m.depthdisable = true; // magic
1051 R_Mesh_Matrix(&r_identitymatrix);
1055 varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1056 varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1057 varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1059 varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1060 varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1061 varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1062 varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1063 varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1064 varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1065 GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1066 R_Mesh_Draw(3, 1, polygonelements);
1073 r_refdef must be set before the first call
1076 void R_RenderView (void)
1078 entity_render_t *world;
1079 if (!r_refdef.entities/* || !cl.worldmodel*/)
1080 return; //Host_Error ("R_RenderView: NULL worldmodel");
1082 world = &cl_entities[0].render;
1084 // FIXME: move to client
1086 R_TimeReport("mexplosion");
1094 R_TimeReport("setup");
1096 R_FarClip_Start(r_origin, vpn, 768.0f);
1098 r_farclip = R_FarClip_Finish() + 16384.0f;//256.0f;
1099 R_TimeReport("markentity");
1101 GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1102 //GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1103 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1104 GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1105 qglDepthFunc(GL_LEQUAL);
1108 R_MeshQueue_BeginScene();
1110 if (r_shadows.integer == 3)
1112 if (!gl_texturecubemap)
1114 Con_Printf("Cubemap texture support not detected, turning off r_shadows 3\n");
1115 Cvar_SetValueQuick(&r_shadows, 0);
1117 else if (!gl_dot3arb)
1119 Con_Printf("Bumpmapping support not detected, turning off r_shadows 3\n");
1120 Cvar_SetValueQuick(&r_shadows, 0);
1122 else if (!gl_stencil)
1124 Con_Printf("Stencil not enabled, turning off r_shadows 3, please type vid_stencil 1;vid_restart and try again\n");
1125 Cvar_SetValueQuick(&r_shadows, 0);
1127 else if (!gl_combine.integer)
1129 Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadows 3\n");
1130 Cvar_SetValueQuick(&r_shadows, 0);
1134 if (R_DrawBrushModelsSky())
1135 R_TimeReport("bmodelsky");
1137 // must occur early because it can draw sky
1138 R_DrawWorld(world, r_shadows.integer == 3);
1139 R_TimeReport("world");
1141 // don't let sound skip if going slow
1142 if (!intimerefresh && !r_speeds.integer)
1145 R_DrawModels(r_shadows.integer == 3);
1146 R_TimeReport("models");
1148 if (r_shadows.integer == 1)
1150 R_DrawFakeShadows();
1151 R_TimeReport("fakeshadows");
1154 if (r_shadows.integer == 3)
1155 R_ShadowVolumeLighting();
1158 R_TimeReport("particles");
1161 R_TimeReport("explosions");
1163 R_MeshQueue_RenderTransparent();
1164 R_TimeReport("drawtrans");
1167 R_TimeReport("coronas");
1169 R_DrawWorldCrosshair();
1170 R_TimeReport("crosshair");
1173 R_TimeReport("blendview");
1175 R_MeshQueue_Render();
1176 R_MeshQueue_EndScene();
1177 if (r_shadows.integer == 2)
1179 R_DrawShadowVolumes();
1180 R_TimeReport("shadowvolumes");
1183 R_TimeReport("meshfinish");
1187 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1190 float *v, *c, f1, f2, diff[3];
1192 m.blendfunc1 = GL_SRC_ALPHA;
1193 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1194 R_Mesh_Matrix(&r_identitymatrix);
1197 varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1198 varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1199 varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1200 varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1201 varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1202 varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1203 varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1204 varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1205 R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1208 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1210 VectorSubtract(v, r_origin, diff);
1211 f2 = exp(fogdensity/DotProduct(diff, diff));
1214 c[0] = c[0] * f1 + fogcolor[0] * f2;
1215 c[1] = c[1] * f1 + fogcolor[1] * f2;
1216 c[2] = c[2] * f1 + fogcolor[2] * f2;
1224 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1226 const entity_render_t *ent = calldata1;
1228 float f1, f2, *c, diff[3];
1230 memset(&m, 0, sizeof(m));
1231 if (ent->flags & EF_ADDITIVE)
1233 m.blendfunc1 = GL_SRC_ALPHA;
1234 m.blendfunc2 = GL_ONE;
1236 else if (ent->alpha < 1)
1238 m.blendfunc1 = GL_SRC_ALPHA;
1239 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1243 m.blendfunc1 = GL_ONE;
1244 m.blendfunc2 = GL_ZERO;
1246 R_Mesh_Matrix(&ent->matrix);
1249 element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1250 element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1251 element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1252 element[ 9] = 5;element[10] = 3;element[11] = 1;
1253 element[12] = 0;element[13] = 2;element[14] = 4;
1254 element[15] = 2;element[16] = 1;element[17] = 4;
1255 element[18] = 3;element[19] = 0;element[20] = 4;
1256 element[21] = 1;element[22] = 3;element[23] = 4;
1257 varray_vertex[ 0] = -16;varray_vertex[ 1] = 0;varray_vertex[ 2] = 0;
1258 varray_vertex[ 4] = 16;varray_vertex[ 5] = 0;varray_vertex[ 6] = 0;
1259 varray_vertex[ 8] = 0;varray_vertex[ 9] = -16;varray_vertex[10] = 0;
1260 varray_vertex[12] = 0;varray_vertex[13] = 16;varray_vertex[14] = 0;
1261 varray_vertex[16] = 0;varray_vertex[17] = 0;varray_vertex[18] = -16;
1262 varray_vertex[20] = 0;varray_vertex[21] = 0;varray_vertex[22] = 16;
1263 varray_color[ 0] = 0.00f * r_colorscale;varray_color[ 1] = 0.00f * r_colorscale;varray_color[ 2] = 0.50f * r_colorscale;varray_color[ 3] = ent->alpha;
1264 varray_color[ 4] = 0.00f * r_colorscale;varray_color[ 5] = 0.00f * r_colorscale;varray_color[ 6] = 0.50f * r_colorscale;varray_color[ 7] = ent->alpha;
1265 varray_color[ 8] = 0.00f * r_colorscale;varray_color[ 9] = 0.50f * r_colorscale;varray_color[10] = 0.00f * r_colorscale;varray_color[11] = ent->alpha;
1266 varray_color[12] = 0.00f * r_colorscale;varray_color[13] = 0.50f * r_colorscale;varray_color[14] = 0.00f * r_colorscale;varray_color[15] = ent->alpha;
1267 varray_color[16] = 0.50f * r_colorscale;varray_color[17] = 0.00f * r_colorscale;varray_color[18] = 0.00f * r_colorscale;varray_color[19] = ent->alpha;
1268 varray_color[20] = 0.50f * r_colorscale;varray_color[21] = 0.00f * r_colorscale;varray_color[22] = 0.00f * r_colorscale;varray_color[23] = ent->alpha;
1271 VectorSubtract(ent->origin, r_origin, diff);
1272 f2 = exp(fogdensity/DotProduct(diff, diff));
1274 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1276 c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1277 c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1278 c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1283 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1285 c[0] *= r_colorscale;
1286 c[1] *= r_colorscale;
1287 c[2] *= r_colorscale;
1291 R_Mesh_Draw(6, 8, element);
1294 void R_DrawNoModel(entity_render_t *ent)
1296 //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1297 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1299 // R_DrawNoModelCallback(ent, 0);
1302 void R_CalcBeamVerts (float *vert, vec3_t org1, vec3_t org2, float width)
1304 vec3_t right1, right2, diff, normal;
1306 VectorSubtract (org2, org1, normal);
1307 VectorNormalizeFast (normal);
1309 // calculate 'right' vector for start
1310 VectorSubtract (r_origin, org1, diff);
1311 VectorNormalizeFast (diff);
1312 CrossProduct (normal, diff, right1);
1314 // calculate 'right' vector for end
1315 VectorSubtract (r_origin, org2, diff);
1316 VectorNormalizeFast (diff);
1317 CrossProduct (normal, diff, right2);
1319 vert[ 0] = org1[0] + width * right1[0];
1320 vert[ 1] = org1[1] + width * right1[1];
1321 vert[ 2] = org1[2] + width * right1[2];
1322 vert[ 4] = org1[0] - width * right1[0];
1323 vert[ 5] = org1[1] - width * right1[1];
1324 vert[ 6] = org1[2] - width * right1[2];
1325 vert[ 8] = org2[0] - width * right2[0];
1326 vert[ 9] = org2[1] - width * right2[1];
1327 vert[10] = org2[2] - width * right2[2];
1328 vert[12] = org2[0] + width * right2[0];
1329 vert[13] = org2[1] + width * right2[1];
1330 vert[14] = org2[2] + width * right2[2];