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_shadow_staticworldlights = {0, "r_shadow_staticworldlights", "1"};
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_shadow_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 || gamemode == GAME_NEXIUZ)
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 mins, const vec3_t maxs)
337 for (i = 0;i < 4;i++)
344 if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
348 if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
352 if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
356 if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
360 if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
364 if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
368 if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
372 if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
380 int PVS_CullBox(const vec3_t mins, const vec3_t maxs)
383 mnode_t *node, *stack[4096];
385 stack[stackpos++] = cl.worldmodel->nodes;
388 node = stack[--stackpos];
389 if (node->contents < 0)
391 if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
396 sides = BoxOnPlaneSide(mins, maxs, node->plane);
397 if (sides & 2 && stackpos < 4096)
398 stack[stackpos++] = node->children[1];
399 if (sides & 1 && stackpos < 4096)
400 stack[stackpos++] = node->children[0];
406 int VIS_CullBox(const vec3_t mins, const vec3_t maxs)
409 mnode_t *node, *stack[4096];
410 if (R_CullBox(mins, maxs))
413 stack[stackpos++] = cl.worldmodel->nodes;
416 node = stack[--stackpos];
417 if (node->contents < 0)
419 if (((mleaf_t *)node)->visframe == r_framecount)
424 sides = BoxOnPlaneSide(mins, maxs, node->plane);
425 if (sides & 2 && stackpos < 4096)
426 stack[stackpos++] = node->children[1];
427 if (sides & 1 && stackpos < 4096)
428 stack[stackpos++] = node->children[0];
434 int R_CullSphere(const vec3_t origin, vec_t radius)
436 return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
437 || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
438 || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
439 || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
442 int PVS_CullSphere(const vec3_t origin, vec_t radius)
445 mnode_t *node, *stack[4096];
448 stack[stackpos++] = cl.worldmodel->nodes;
451 node = stack[--stackpos];
452 if (node->contents < 0)
454 if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
459 dist = PlaneDiff(origin, node->plane);
461 stack[stackpos++] = node->children[1];
463 stack[stackpos++] = node->children[0];
469 int VIS_CullSphere(const vec3_t origin, vec_t radius)
472 mnode_t *node, *stack[4096];
474 if (R_CullSphere(origin, radius))
477 stack[stackpos++] = cl.worldmodel->nodes;
480 node = stack[--stackpos];
481 if (node->contents < 0)
483 if (((mleaf_t *)node)->visframe == r_framecount)
488 dist = PlaneDiff(origin, node->plane);
490 stack[stackpos++] = node->children[1];
492 stack[stackpos++] = node->children[0];
499 //==================================================================================
501 static void R_MarkEntities (void)
505 entity_render_t *ent;
507 ent = &cl_entities[0].render;
508 Matrix4x4_CreateIdentity(&ent->matrix);
509 Matrix4x4_CreateIdentity(&ent->inversematrix);
512 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
514 if (!r_drawentities.integer)
517 for (i = 0;i < r_refdef.numentities;i++)
519 ent = r_refdef.entities[i];
520 Mod_CheckLoaded(ent->model);
522 // move view-relative models to where they should be
523 if (ent->flags & RENDER_VIEWMODEL)
525 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
526 ent->flags -= RENDER_VIEWMODEL;
528 VectorCopy(ent->origin, v);
529 ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
530 ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
531 ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
533 VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
536 VectorCopy(ent->angles, v);
537 if (!ent->model || ent->model->type != mod_brush)
539 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
540 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
541 R_LerpAnimation(ent);
542 R_UpdateEntLights(ent);
543 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
544 && !VIS_CullSphere(ent->origin, ent->model->radius * ent->scale)
545 && !VIS_CullBox(ent->mins, ent->maxs))
547 ent->visframe = r_framecount;
548 R_FarClip_Box(ent->mins, ent->maxs);
553 // only used if skyrendermasked, and normally returns false
554 int R_DrawBrushModelsSky (void)
557 entity_render_t *ent;
559 if (!r_drawentities.integer)
563 for (i = 0;i < r_refdef.numentities;i++)
565 ent = r_refdef.entities[i];
566 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
568 ent->model->DrawSky(ent);
581 void R_DrawViewModel (void)
583 entity_render_t *ent;
585 // FIXME: move these checks to client
586 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
589 ent = &cl.viewent.render;
590 Mod_CheckLoaded(ent->model);
591 R_LerpAnimation(ent);
592 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
593 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
594 R_UpdateEntLights(ent);
595 ent->model->Draw(ent);
599 void R_DrawNoModel(entity_render_t *ent);
603 entity_render_t *ent;
605 if (!r_drawentities.integer)
608 for (i = 0;i < r_refdef.numentities;i++)
610 ent = r_refdef.entities[i];
611 if (ent->visframe == r_framecount)
613 if (ent->model && ent->model->Draw != NULL)
614 ent->model->Draw(ent);
621 void R_DrawFakeShadows (void)
624 entity_render_t *ent;
626 ent = &cl_entities[0].render;
627 if (ent->model && ent->model->DrawFakeShadow)
628 ent->model->DrawFakeShadow(ent);
630 if (!r_drawentities.integer)
632 for (i = 0;i < r_refdef.numentities;i++)
634 ent = r_refdef.entities[i];
635 if (ent->model && ent->model->DrawFakeShadow)
636 ent->model->DrawFakeShadow(ent);
640 #include "r_shadow.h"
642 int shadowframecount = 0;
644 int Light_CullBox(const vec3_t mins, const vec3_t maxs)
647 mnode_t *node, *stack[4096];
649 stack[stackpos++] = cl.worldmodel->nodes;
652 node = stack[--stackpos];
653 if (node->contents < 0)
655 if (((mleaf_t *)node)->worldnodeframe == shadowframecount)
660 sides = BoxOnPlaneSide(mins, maxs, node->plane);
661 if (sides & 2 && stackpos < 4096)
662 stack[stackpos++] = node->children[1];
663 if (sides & 1 && stackpos < 4096)
664 stack[stackpos++] = node->children[0];
670 int LightAndVis_CullBox(const vec3_t mins, const vec3_t maxs)
673 mnode_t *node, *stack[4096];
674 if (R_CullBox(mins, maxs))
677 stack[stackpos++] = cl.worldmodel->nodes;
680 node = stack[--stackpos];
681 if (node->contents < 0)
683 if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
688 sides = BoxOnPlaneSide(mins, maxs, node->plane);
689 if (sides & 2 && stackpos < 4096)
690 stack[stackpos++] = node->children[1];
691 if (sides & 1 && stackpos < 4096)
692 stack[stackpos++] = node->children[0];
699 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float cullradius, float lightradius, vec3_t clipmins, vec3_t clipmaxs)
702 vec3_t p, p2, temp, relativelightorigin, mins, maxs;
703 float dist, projectdistance;
705 if (ent->model && ent->model->DrawShadowVolume)
707 temp[0] = bound(ent->mins[0], lightorigin[0], ent->maxs[0]) - lightorigin[0];
708 temp[1] = bound(ent->mins[1], lightorigin[1], ent->maxs[1]) - lightorigin[1];
709 temp[2] = bound(ent->mins[2], lightorigin[2], ent->maxs[2]) - lightorigin[2];
710 dist = DotProduct(temp, temp);
711 if (dist < cullradius * cullradius)
713 if (!Light_CullBox(ent->mins, ent->maxs))
715 projectdistance = cullradius - sqrt(dist);
716 // calculate projected bounding box and decide if it is on-screen
717 VectorCopy(ent->mins, mins);
718 VectorCopy(ent->maxs, maxs);
719 for (i = 0;i < 8;i++)
721 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
722 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
723 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
724 VectorSubtract(p, lightorigin, temp);
725 dist = projectdistance / sqrt(DotProduct(temp, temp));
726 VectorMA(p, dist, temp, p2);
727 if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
728 if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
729 if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
731 if (mins[0] < clipmaxs[0] && maxs[0] > clipmins[0]
732 && mins[1] < clipmaxs[1] && maxs[1] > clipmins[1]
733 && mins[2] < clipmaxs[2] && maxs[2] > clipmins[2]
734 && !LightAndVis_CullBox(mins, maxs))
736 Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
737 ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
744 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light);
746 #define SHADOWSPHERE_SEGMENTS 16
748 shadowmesh_t *shadowsphere;
749 void R_CreateShadowSphere(void)
752 vec3_t angles, angles2, angles3, angles4;
754 shadowsphere = Mod_ShadowMesh_Begin(zonemempool, SHADOWSPHERE_SEGMENTS * SHADOWSPHERE_SEGMENTS / 2);
755 for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
757 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
759 angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
760 angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
762 VectorCopy(angles, angles2);
763 VectorCopy(angles, angles3);
764 VectorCopy(angles, angles4);
765 angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
766 angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
767 angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
768 angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
769 AngleVectorsFLU(angles, verts, NULL, NULL);
770 AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
771 AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
772 AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
773 VectorScale(&verts[0], 1.0f, &verts[0]);
774 VectorScale(&verts[3], 1.0f, &verts[3]);
775 VectorScale(&verts[6], 1.0f, &verts[6]);
776 VectorScale(&verts[9], 1.0f, &verts[9]);
777 Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
780 shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
784 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
789 R_CreateShadowSphere();
790 Matrix4x4_CreateScale(&matrix, lightradius);
791 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
792 R_Mesh_Matrix(&matrix);
793 for (mesh = shadowsphere;mesh;mesh = mesh->next)
795 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
796 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
798 Matrix4x4_CreateScale(&matrix, -cullradius);
799 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
800 R_Mesh_Matrix(&matrix);
801 for (mesh = shadowsphere;mesh;mesh = mesh->next)
803 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
804 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
808 extern void R_Model_Brush_DrawLightForSurfaceList(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, msurface_t **surflist, int numsurfaces);
809 void R_ShadowVolumeLighting (int visiblevolumes)
812 entity_render_t *ent;
814 float f, lightradius, cullradius;
815 vec3_t relativelightorigin, relativeeyeorigin, lightcolor, clipmins, clipmaxs;
824 memset(&m, 0, sizeof(m));
825 m.blendfunc1 = GL_ONE;
826 m.blendfunc2 = GL_ONE;
827 if (r_shadow_realtime.integer >= 3)
828 m.depthdisable = true;
830 qglDisable(GL_CULL_FACE);
831 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
834 R_Shadow_Stage_Begin();
836 for (lnum = 0, wl = r_shadow_worldlightchain;wl;wl = wl->next, lnum++)
838 if (d_lightstylevalue[wl->style] <= 0)
840 cullradius = wl->cullradius;
841 lightradius = wl->lightradius;
842 if (R_CullSphere(wl->origin, lightradius))
844 //if (R_CullBox(wl->mins, wl->maxs) || R_CullSphere(wl->origin, lightradius))
846 //if (VIS_CullBox(wl->mins, wl->maxs) || VIS_CullSphere(wl->origin, lightradius))
848 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
851 for (i = 0;i < wl->numleafs;i++)
852 if (wl->leafs[i]->visframe == r_framecount)
854 if (i == wl->numleafs)
857 VectorCopy(leaf->mins, clipmins);
858 VectorCopy(leaf->maxs, clipmaxs);
859 for (i = 0;i < wl->numleafs;i++)
862 if (leaf->visframe == r_framecount)
864 if (clipmins[0] > leaf->mins[0]) clipmins[0] = leaf->mins[0];
865 if (clipmaxs[0] < leaf->maxs[0]) clipmaxs[0] = leaf->maxs[0];
866 if (clipmins[1] > leaf->mins[1]) clipmins[1] = leaf->mins[1];
867 if (clipmaxs[1] < leaf->maxs[1]) clipmaxs[1] = leaf->maxs[1];
868 if (clipmins[2] > leaf->mins[2]) clipmins[2] = leaf->mins[2];
869 if (clipmaxs[2] < leaf->maxs[2]) clipmaxs[2] = leaf->maxs[2];
872 if (clipmins[0] < wl->mins[0]) clipmins[0] = wl->mins[0];
873 if (clipmins[1] < wl->mins[1]) clipmins[1] = wl->mins[1];
874 if (clipmins[2] < wl->mins[2]) clipmins[2] = wl->mins[2];
875 if (clipmaxs[0] > wl->maxs[0]) clipmaxs[0] = wl->maxs[0];
876 if (clipmaxs[1] > wl->maxs[1]) clipmaxs[1] = wl->maxs[1];
877 if (clipmaxs[2] > wl->maxs[2]) clipmaxs[2] = wl->maxs[2];
879 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, wl->origin, wl->cullradius))
882 // mark the leafs we care about so only things in those leafs will matter
883 for (i = 0;i < wl->numleafs;i++)
884 wl->leafs[i]->worldnodeframe = shadowframecount;
887 f = d_lightstylevalue[wl->style] * (1.0f / 256.0f);
888 VectorScale(wl->light, f, lightcolor);
891 f = 2 + sin(realtime * M_PI * 4.0);
892 VectorScale(lightcolor, f, lightcolor);
896 R_Shadow_Stage_ShadowVolumes();
897 ent = &cl_entities[0].render;
898 if (wl->shadowvolume && r_shadow_staticworldlights.integer)
899 R_Shadow_DrawWorldLightShadowVolume(&ent->matrix, wl);
901 R_TestAndDrawShadowVolume(ent, wl->origin, cullradius / ent->scale, lightradius / ent->scale, clipmins, clipmaxs);
902 if (r_drawentities.integer)
904 for (i = 0;i < r_refdef.numentities;i++)
906 ent = r_refdef.entities[i];
907 if (ent->maxs[0] >= wl->mins[0] && ent->mins[0] <= wl->maxs[0]
908 && ent->maxs[1] >= wl->mins[1] && ent->mins[1] <= wl->maxs[1]
909 && ent->maxs[2] >= wl->mins[2] && ent->mins[2] <= wl->maxs[2]
910 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
911 R_TestAndDrawShadowVolume(r_refdef.entities[i], wl->origin, cullradius / ent->scale, lightradius / ent->scale, clipmins, clipmaxs);
917 R_Shadow_Stage_Light();
918 ent = &cl_entities[0].render;
919 if (ent->model && ent->model->DrawLight)
921 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
922 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
924 R_Model_Brush_DrawLightForSurfaceList(ent, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, wl->surfaces, wl->numsurfaces);
926 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
928 if (r_drawentities.integer)
930 for (i = 0;i < r_refdef.numentities;i++)
932 ent = r_refdef.entities[i];
933 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
934 && ent->maxs[0] >= wl->mins[0] && ent->mins[0] <= wl->maxs[0]
935 && ent->maxs[1] >= wl->mins[1] && ent->mins[1] <= wl->maxs[1]
936 && ent->maxs[2] >= wl->mins[2] && ent->mins[2] <= wl->maxs[2]
937 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
939 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
940 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
941 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
948 for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
950 if (d_lightstylevalue[sl->style] <= 0)
952 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
954 cullradius = sl->cullradius;
955 lightradius = sl->lightradius;
956 if (VIS_CullBox(sl->mins, sl->maxs) || VIS_CullSphere(sl->origin, lightradius))
959 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
960 VectorScale(sl->light, f, lightcolor);
963 R_Shadow_Stage_ShadowVolumes();
964 if (sl->shadowvolume && r_shadow_staticworldlights.integer)
965 R_DrawWorldLightShadowVolume(&cl_entities[0].render.matrix, sl->shadowvolume);
967 R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
968 if (r_drawentities.integer)
970 for (i = 0;i < r_refdef.numentities;i++)
972 ent = r_refdef.entities[i];
973 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
974 && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
975 && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
976 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
977 R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
983 R_Shadow_Stage_Light();
984 ent = &cl_entities[0].render;
985 if (ent->model && ent->model->DrawLight)
987 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
988 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
989 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
991 if (r_drawentities.integer)
993 for (i = 0;i < r_refdef.numentities;i++)
995 ent = r_refdef.entities[i];
996 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
997 && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
998 && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
999 && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
1000 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1002 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1003 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1004 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
1011 for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
1013 cullradius = rd->cullradius;
1014 lightradius = rd->cullradius;
1015 if (VIS_CullSphere(rd->origin, lightradius))
1018 VectorScale(rd->light, (1.0f / 8192.0f), lightcolor);
1019 clipmins[0] = rd->origin[0] - cullradius;
1020 clipmins[1] = rd->origin[1] - cullradius;
1021 clipmins[2] = rd->origin[2] - cullradius;
1022 clipmaxs[0] = rd->origin[0] + cullradius;
1023 clipmaxs[1] = rd->origin[1] + cullradius;
1024 clipmaxs[2] = rd->origin[2] + cullradius;
1026 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, rd->origin, rd->cullradius))
1029 if (!visiblevolumes)
1030 R_Shadow_Stage_ShadowVolumes();
1031 ent = &cl_entities[0].render;
1032 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius / ent->scale, lightradius / ent->scale, clipmins, clipmaxs);
1033 if (r_drawentities.integer)
1035 for (i = 0;i < r_refdef.numentities;i++)
1037 ent = r_refdef.entities[i];
1038 if (ent != rd->ent && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1039 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius / ent->scale, lightradius / ent->scale, clipmins, clipmaxs);
1043 if (!visiblevolumes)
1045 R_Shadow_Stage_Light();
1046 ent = &cl_entities[0].render;
1047 if (ent->model && ent->model->DrawLight)
1049 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1050 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1051 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1053 if (r_drawentities.integer)
1055 for (i = 0;i < r_refdef.numentities;i++)
1057 ent = r_refdef.entities[i];
1058 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1059 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1061 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1062 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1063 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1070 if (!visiblevolumes)
1071 R_Shadow_Stage_End();
1072 qglEnable(GL_CULL_FACE);
1073 qglDisable(GL_SCISSOR_TEST);
1076 static void R_SetFrustum (void)
1080 // LordHavoc: note to all quake engine coders, the special case for 90
1081 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
1082 // disabled as well.
1083 // rotate VPN right by FOV_X/2 degrees
1084 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1085 // rotate VPN left by FOV_X/2 degrees
1086 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1087 // rotate VPN up by FOV_X/2 degrees
1088 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1089 // rotate VPN down by FOV_X/2 degrees
1090 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1092 for (i = 0;i < 4;i++)
1094 frustum[i].type = PLANE_ANYZ;
1095 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
1096 PlaneClassify(&frustum[i]);
1105 static void R_SetupFrame (void)
1107 // don't allow cheats in multiplayer
1108 if (cl.maxclients > 1)
1110 if (r_fullbright.integer != 0)
1111 Cvar_Set ("r_fullbright", "0");
1112 if (r_ambient.value != 0)
1113 Cvar_Set ("r_ambient", "0");
1118 // build the transformation matrix for the given view angles
1119 VectorCopy (r_refdef.vieworg, r_origin);
1121 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1127 static void R_BlendView(void)
1132 if (r_refdef.viewblend[3] < 0.01f)
1135 memset(&m, 0, sizeof(m));
1136 m.blendfunc1 = GL_SRC_ALPHA;
1137 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1138 m.depthdisable = true; // magic
1139 R_Mesh_Matrix(&r_identitymatrix);
1143 varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1144 varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1145 varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1147 varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1148 varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1149 varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1150 varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1151 varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1152 varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1153 GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1154 R_Mesh_Draw(3, 1, polygonelements);
1161 r_refdef must be set before the first call
1164 void R_RenderView (void)
1166 entity_render_t *world;
1167 if (!r_refdef.entities/* || !cl.worldmodel*/)
1168 return; //Host_Error ("R_RenderView: NULL worldmodel");
1170 if (r_shadow_realtime.integer == 1)
1172 if (!gl_texturecubemap)
1174 Con_Printf("Cubemap texture support not detected, turning off r_shadow_realtime\n");
1175 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1177 else if (!gl_dot3arb)
1179 Con_Printf("Bumpmapping support not detected, turning off r_shadow_realtime\n");
1180 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1182 else if (!gl_stencil)
1184 Con_Printf("Stencil not enabled, turning off r_shadow_realtime, please type vid_stencil 1;vid_bitsperpixel 32;vid_restart and try again\n");
1185 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1187 else if (!gl_combine.integer)
1189 Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadow_realtime\n");
1190 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1194 R_Shadow_UpdateLightingMode();
1196 world = &cl_entities[0].render;
1198 // FIXME: move to client
1200 R_TimeReport("mexplosion");
1208 R_TimeReport("setup");
1210 R_WorldVisibility(world);
1211 R_TimeReport("worldvis");
1213 R_FarClip_Start(r_origin, vpn, 768.0f);
1215 r_farclip = R_FarClip_Finish() + 256.0f;
1216 R_TimeReport("markentity");
1218 GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1219 if (r_shadow_lightingmode > 0)
1220 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1222 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1223 GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1224 qglDepthFunc(GL_LEQUAL);
1227 R_MeshQueue_BeginScene();
1229 if (r_shadow_lightingmode)
1230 R_Shadow_UpdateWorldLightSelection();
1232 if (R_DrawBrushModelsSky())
1233 R_TimeReport("bmodelsky");
1235 // must occur early because it can draw sky
1237 R_TimeReport("world");
1239 // don't let sound skip if going slow
1240 if (!intimerefresh && !r_speeds.integer)
1243 R_DrawModels(r_shadow_lightingmode > 0);
1244 R_TimeReport("models");
1246 if (r_shadows.integer == 1 && r_shadow_lightingmode <= 0)
1248 R_DrawFakeShadows();
1249 R_TimeReport("fakeshadow");
1252 if (r_shadow_lightingmode > 0)
1254 R_ShadowVolumeLighting(false);
1255 R_TimeReport("dynlight");
1259 R_TimeReport("particles");
1262 R_TimeReport("explosions");
1264 R_MeshQueue_RenderTransparent();
1265 R_TimeReport("drawtrans");
1268 R_TimeReport("coronas");
1270 R_DrawWorldCrosshair();
1271 R_TimeReport("crosshair");
1274 R_TimeReport("blendview");
1276 R_MeshQueue_Render();
1277 R_MeshQueue_EndScene();
1278 if (r_shadow_realtime.integer >= 2)
1280 R_ShadowVolumeLighting(true);
1281 R_TimeReport("shadowvolume");
1284 R_TimeReport("meshfinish");
1288 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1291 float *v, *c, f1, f2, diff[3];
1293 m.blendfunc1 = GL_SRC_ALPHA;
1294 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1295 R_Mesh_Matrix(&r_identitymatrix);
1298 varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1299 varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1300 varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1301 varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1302 varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1303 varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1304 varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1305 varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1306 R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1309 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1311 VectorSubtract(v, r_origin, diff);
1312 f2 = exp(fogdensity/DotProduct(diff, diff));
1315 c[0] = c[0] * f1 + fogcolor[0] * f2;
1316 c[1] = c[1] * f1 + fogcolor[1] * f2;
1317 c[2] = c[2] * f1 + fogcolor[2] * f2;
1325 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1327 const entity_render_t *ent = calldata1;
1329 float f1, f2, *c, diff[3];
1331 memset(&m, 0, sizeof(m));
1332 if (ent->flags & EF_ADDITIVE)
1334 m.blendfunc1 = GL_SRC_ALPHA;
1335 m.blendfunc2 = GL_ONE;
1337 else if (ent->alpha < 1)
1339 m.blendfunc1 = GL_SRC_ALPHA;
1340 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1344 m.blendfunc1 = GL_ONE;
1345 m.blendfunc2 = GL_ZERO;
1347 R_Mesh_Matrix(&ent->matrix);
1350 element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1351 element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1352 element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1353 element[ 9] = 5;element[10] = 3;element[11] = 1;
1354 element[12] = 0;element[13] = 2;element[14] = 4;
1355 element[15] = 2;element[16] = 1;element[17] = 4;
1356 element[18] = 3;element[19] = 0;element[20] = 4;
1357 element[21] = 1;element[22] = 3;element[23] = 4;
1358 varray_vertex[ 0] = -16;varray_vertex[ 1] = 0;varray_vertex[ 2] = 0;
1359 varray_vertex[ 4] = 16;varray_vertex[ 5] = 0;varray_vertex[ 6] = 0;
1360 varray_vertex[ 8] = 0;varray_vertex[ 9] = -16;varray_vertex[10] = 0;
1361 varray_vertex[12] = 0;varray_vertex[13] = 16;varray_vertex[14] = 0;
1362 varray_vertex[16] = 0;varray_vertex[17] = 0;varray_vertex[18] = -16;
1363 varray_vertex[20] = 0;varray_vertex[21] = 0;varray_vertex[22] = 16;
1364 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;
1365 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;
1366 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;
1367 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;
1368 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;
1369 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;
1372 VectorSubtract(ent->origin, r_origin, diff);
1373 f2 = exp(fogdensity/DotProduct(diff, diff));
1375 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1377 c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1378 c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1379 c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1384 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1386 c[0] *= r_colorscale;
1387 c[1] *= r_colorscale;
1388 c[2] *= r_colorscale;
1392 R_Mesh_Draw(6, 8, element);
1395 void R_DrawNoModel(entity_render_t *ent)
1397 //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1398 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1400 // R_DrawNoModelCallback(ent, 0);
1403 void R_CalcBeamVerts (float *vert, const vec3_t org1, const vec3_t org2, float width)
1405 vec3_t right1, right2, diff, normal;
1407 VectorSubtract (org2, org1, normal);
1408 VectorNormalizeFast (normal);
1410 // calculate 'right' vector for start
1411 VectorSubtract (r_origin, org1, diff);
1412 VectorNormalizeFast (diff);
1413 CrossProduct (normal, diff, right1);
1415 // calculate 'right' vector for end
1416 VectorSubtract (r_origin, org2, diff);
1417 VectorNormalizeFast (diff);
1418 CrossProduct (normal, diff, right2);
1420 vert[ 0] = org1[0] + width * right1[0];
1421 vert[ 1] = org1[1] + width * right1[1];
1422 vert[ 2] = org1[2] + width * right1[2];
1423 vert[ 4] = org1[0] - width * right1[0];
1424 vert[ 5] = org1[1] - width * right1[1];
1425 vert[ 6] = org1[2] - width * right1[2];
1426 vert[ 8] = org2[0] - width * right2[0];
1427 vert[ 9] = org2[1] - width * right2[1];
1428 vert[10] = org2[2] - width * right2[2];
1429 vert[12] = org2[0] + width * right2[0];
1430 vert[13] = org2[1] + width * right2[1];
1431 vert[14] = org2[2] + width * right2[2];