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"};
61 cvar_t r_shadow_cull = {0, "r_shadow_cull", "1"};
63 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
64 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
65 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
66 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
67 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
68 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
69 cvar_t gl_fogend = {0, "gl_fogend","0"};
71 cvar_t r_textureunits = {0, "r_textureunits", "32"};
73 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
76 for (i = 0;i < verts;i++)
87 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
90 for (i = 0;i < verts;i++)
104 For program optimization
107 qboolean intimerefresh = 0;
108 static void R_TimeRefresh_f (void)
111 float start, stop, time;
114 start = Sys_DoubleTime ();
115 for (i = 0;i < 128;i++)
117 r_refdef.viewangles[0] = 0;
118 r_refdef.viewangles[1] = i/128.0*360.0;
119 r_refdef.viewangles[2] = 0;
123 stop = Sys_DoubleTime ();
126 Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
131 float fog_density, fog_red, fog_green, fog_blue;
133 qboolean oldgl_fogenable;
134 void R_SetupFog(void)
136 if (gamemode == GAME_NEHAHRA)
138 if (gl_fogenable.integer)
140 oldgl_fogenable = true;
141 fog_density = gl_fogdensity.value;
142 fog_red = gl_fogred.value;
143 fog_green = gl_foggreen.value;
144 fog_blue = gl_fogblue.value;
146 else if (oldgl_fogenable)
148 oldgl_fogenable = false;
157 fogcolor[0] = fog_red = bound(0.0f, fog_red , 1.0f);
158 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
159 fogcolor[2] = fog_blue = bound(0.0f, fog_blue , 1.0f);
164 fogdensity = -4000.0f / (fog_density * fog_density);
165 // fog color was already set
171 // FIXME: move this to client?
174 if (gamemode == GAME_NEHAHRA)
176 Cvar_Set("gl_fogenable", "0");
177 Cvar_Set("gl_fogdensity", "0.2");
178 Cvar_Set("gl_fogred", "0.3");
179 Cvar_Set("gl_foggreen", "0.3");
180 Cvar_Set("gl_fogblue", "0.3");
182 fog_density = fog_red = fog_green = fog_blue = 0.0f;
185 // FIXME: move this to client?
186 void FOG_registercvars(void)
188 if (gamemode == GAME_NEHAHRA)
190 Cvar_RegisterVariable (&gl_fogenable);
191 Cvar_RegisterVariable (&gl_fogdensity);
192 Cvar_RegisterVariable (&gl_fogred);
193 Cvar_RegisterVariable (&gl_foggreen);
194 Cvar_RegisterVariable (&gl_fogblue);
195 Cvar_RegisterVariable (&gl_fogstart);
196 Cvar_RegisterVariable (&gl_fogend);
200 void gl_main_start(void)
204 void gl_main_shutdown(void)
208 extern void CL_ParseEntityLump(char *entitystring);
209 void gl_main_newmap(void)
211 if (cl.worldmodel && cl.worldmodel->entities)
212 CL_ParseEntityLump(cl.worldmodel->entities);
216 void GL_Main_Init(void)
218 Matrix4x4_CreateIdentity(&r_identitymatrix);
219 // FIXME: move this to client?
221 Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
222 Cvar_RegisterVariable (&r_drawentities);
223 Cvar_RegisterVariable (&r_drawviewmodel);
224 Cvar_RegisterVariable (&r_shadows);
225 Cvar_RegisterVariable (&r_shadow_staticworldlights);
226 Cvar_RegisterVariable (&r_speeds);
227 Cvar_RegisterVariable (&r_fullbrights);
228 Cvar_RegisterVariable (&r_wateralpha);
229 Cvar_RegisterVariable (&r_dynamic);
230 Cvar_RegisterVariable (&r_fullbright);
231 Cvar_RegisterVariable (&r_textureunits);
232 Cvar_RegisterVariable (&r_shadow_cull);
233 if (gamemode == GAME_NEHAHRA || gamemode == GAME_NEXIUZ)
234 Cvar_SetValue("r_fullbrights", 0);
235 R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
238 vec3_t r_farclip_origin;
239 vec3_t r_farclip_direction;
240 vec_t r_farclip_directiondist;
241 vec_t r_farclip_meshfarclip;
242 int r_farclip_directionbit0;
243 int r_farclip_directionbit1;
244 int r_farclip_directionbit2;
246 // start a farclip measuring session
247 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
249 VectorCopy(origin, r_farclip_origin);
250 VectorCopy(direction, r_farclip_direction);
251 r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
252 r_farclip_directionbit0 = r_farclip_direction[0] < 0;
253 r_farclip_directionbit1 = r_farclip_direction[1] < 0;
254 r_farclip_directionbit2 = r_farclip_direction[2] < 0;
255 r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
258 // enlarge farclip to accomodate box
259 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
262 d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
263 + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
264 + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
265 if (r_farclip_meshfarclip < d)
266 r_farclip_meshfarclip = d;
269 // return farclip value
270 float R_FarClip_Finish(void)
272 return r_farclip_meshfarclip - r_farclip_directiondist;
285 extern void R_Textures_Init(void);
286 extern void Mod_RenderInit(void);
287 extern void GL_Draw_Init(void);
288 extern void GL_Main_Init(void);
289 extern void R_Shadow_Init(void);
290 extern void GL_Models_Init(void);
291 extern void R_Sky_Init(void);
292 extern void GL_Surf_Init(void);
293 extern void R_Crosshairs_Init(void);
294 extern void R_Light_Init(void);
295 extern void R_Particles_Init(void);
296 extern void R_Explosion_Init(void);
297 extern void ui_init(void);
298 extern void gl_backend_init(void);
299 extern void Sbar_Init(void);
301 void Render_Init(void)
326 extern char *ENGINE_EXTENSIONS;
329 VID_CheckExtensions();
331 // LordHavoc: report supported extensions
332 Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
335 int R_CullBox(const vec3_t mins, const vec3_t maxs)
339 for (i = 0;i < 4;i++)
346 if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
350 if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
354 if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
358 if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
362 if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
366 if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
370 if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
374 if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
382 int PVS_CullBox(const vec3_t mins, const vec3_t maxs)
385 mnode_t *node, *stack[4096];
387 stack[stackpos++] = cl.worldmodel->nodes;
390 node = stack[--stackpos];
391 if (node->contents < 0)
393 if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
398 sides = BoxOnPlaneSide(mins, maxs, node->plane);
399 if (sides & 2 && stackpos < 4096)
400 stack[stackpos++] = node->children[1];
401 if (sides & 1 && stackpos < 4096)
402 stack[stackpos++] = node->children[0];
408 int VIS_CullBox(const vec3_t mins, const vec3_t maxs)
411 mnode_t *node, *stack[4096];
412 if (R_CullBox(mins, maxs))
415 stack[stackpos++] = cl.worldmodel->nodes;
418 node = stack[--stackpos];
419 if (node->contents < 0)
421 if (((mleaf_t *)node)->visframe == r_framecount)
426 sides = BoxOnPlaneSide(mins, maxs, node->plane);
427 if (sides & 2 && stackpos < 4096)
428 stack[stackpos++] = node->children[1];
429 if (sides & 1 && stackpos < 4096)
430 stack[stackpos++] = node->children[0];
436 int R_CullSphere(const vec3_t origin, vec_t radius)
438 return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
439 || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
440 || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
441 || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
444 int PVS_CullSphere(const vec3_t origin, vec_t radius)
447 mnode_t *node, *stack[4096];
450 stack[stackpos++] = cl.worldmodel->nodes;
453 node = stack[--stackpos];
454 if (node->contents < 0)
456 if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
461 dist = PlaneDiff(origin, node->plane);
463 stack[stackpos++] = node->children[1];
465 stack[stackpos++] = node->children[0];
471 int VIS_CullSphere(const vec3_t origin, vec_t radius)
474 mnode_t *node, *stack[4096];
476 if (R_CullSphere(origin, radius))
479 stack[stackpos++] = cl.worldmodel->nodes;
482 node = stack[--stackpos];
483 if (node->contents < 0)
485 if (((mleaf_t *)node)->visframe == r_framecount)
490 dist = PlaneDiff(origin, node->plane);
492 stack[stackpos++] = node->children[1];
494 stack[stackpos++] = node->children[0];
501 //==================================================================================
503 static void R_MarkEntities (void)
507 entity_render_t *ent;
509 ent = &cl_entities[0].render;
510 Matrix4x4_CreateIdentity(&ent->matrix);
511 Matrix4x4_CreateIdentity(&ent->inversematrix);
514 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
516 if (!r_drawentities.integer)
519 for (i = 0;i < r_refdef.numentities;i++)
521 ent = r_refdef.entities[i];
522 Mod_CheckLoaded(ent->model);
524 // move view-relative models to where they should be
525 if (ent->flags & RENDER_VIEWMODEL)
527 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
528 ent->flags -= RENDER_VIEWMODEL;
530 VectorCopy(ent->origin, v);
531 ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
532 ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
533 ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
535 VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
538 VectorCopy(ent->angles, v);
539 if (!ent->model || ent->model->type != mod_brush)
541 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
542 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
543 R_LerpAnimation(ent);
544 R_UpdateEntLights(ent);
545 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
546 && !VIS_CullSphere(ent->origin, ent->model->radius * ent->scale)
547 && !VIS_CullBox(ent->mins, ent->maxs))
549 ent->visframe = r_framecount;
550 R_FarClip_Box(ent->mins, ent->maxs);
555 // only used if skyrendermasked, and normally returns false
556 int R_DrawBrushModelsSky (void)
559 entity_render_t *ent;
561 if (!r_drawentities.integer)
565 for (i = 0;i < r_refdef.numentities;i++)
567 ent = r_refdef.entities[i];
568 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
570 ent->model->DrawSky(ent);
583 void R_DrawViewModel (void)
585 entity_render_t *ent;
587 // FIXME: move these checks to client
588 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
591 ent = &cl.viewent.render;
592 Mod_CheckLoaded(ent->model);
593 R_LerpAnimation(ent);
594 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
595 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
596 R_UpdateEntLights(ent);
597 ent->model->Draw(ent);
601 void R_DrawNoModel(entity_render_t *ent);
605 entity_render_t *ent;
607 if (!r_drawentities.integer)
610 for (i = 0;i < r_refdef.numentities;i++)
612 ent = r_refdef.entities[i];
613 if (ent->visframe == r_framecount)
615 if (ent->model && ent->model->Draw != NULL)
616 ent->model->Draw(ent);
623 void R_DrawFakeShadows (void)
626 entity_render_t *ent;
628 ent = &cl_entities[0].render;
629 if (ent->model && ent->model->DrawFakeShadow)
630 ent->model->DrawFakeShadow(ent);
632 if (!r_drawentities.integer)
634 for (i = 0;i < r_refdef.numentities;i++)
636 ent = r_refdef.entities[i];
637 if (ent->model && ent->model->DrawFakeShadow)
638 ent->model->DrawFakeShadow(ent);
642 #include "r_shadow.h"
644 int shadowframecount = 0;
646 int Light_CullBox(const vec3_t mins, const vec3_t maxs)
649 mnode_t *node, *stack[4096];
651 stack[stackpos++] = cl.worldmodel->nodes;
654 node = stack[--stackpos];
655 if (node->contents < 0)
657 if (((mleaf_t *)node)->worldnodeframe == shadowframecount)
662 sides = BoxOnPlaneSide(mins, maxs, node->plane);
663 if (sides & 2 && stackpos < 4096)
664 stack[stackpos++] = node->children[1];
665 if (sides & 1 && stackpos < 4096)
666 stack[stackpos++] = node->children[0];
672 int LightAndVis_CullBox(const vec3_t mins, const vec3_t maxs)
675 mnode_t *node, *stack[4096];
676 if (R_CullBox(mins, maxs))
679 stack[stackpos++] = cl.worldmodel->nodes;
682 node = stack[--stackpos];
683 if (node->contents < 0)
685 if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
690 sides = BoxOnPlaneSide(mins, maxs, node->plane);
691 if (sides & 2 && stackpos < 4096)
692 stack[stackpos++] = node->children[1];
693 if (sides & 1 && stackpos < 4096)
694 stack[stackpos++] = node->children[0];
701 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float cullradius, float lightradius, vec3_t lightmins, vec3_t lightmaxs, vec3_t clipmins, vec3_t clipmaxs)
704 vec3_t p, p2, temp, relativelightorigin, mins, maxs;
705 float dist, projectdistance;
707 if (ent->model == NULL || ent->model->DrawShadowVolume == NULL || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
709 if (r_shadow_cull.integer)
711 if (ent->maxs[0] < lightmins[0] || ent->mins[0] > lightmaxs[0]
712 || ent->maxs[1] < lightmins[1] || ent->mins[1] > lightmaxs[1]
713 || ent->maxs[2] < lightmins[2] || ent->mins[2] > lightmaxs[2]
714 || Light_CullBox(ent->mins, ent->maxs))
717 if (r_shadow_cull.integer)
719 projectdistance = cullradius;
720 // calculate projected bounding box and decide if it is on-screen
721 for (i = 0;i < 8;i++)
723 p2[0] = i & 1 ? ent->model->normalmaxs[0] : ent->model->normalmins[0];
724 p2[1] = i & 2 ? ent->model->normalmaxs[1] : ent->model->normalmins[1];
725 p2[2] = i & 4 ? ent->model->normalmaxs[2] : ent->model->normalmins[2];
726 Matrix4x4_Transform(&ent->matrix, p2, p);
727 VectorSubtract(p, lightorigin, temp);
728 dist = projectdistance / sqrt(DotProduct(temp, temp));
729 VectorMA(p, dist, temp, p2);
732 if (mins[0] > p[0]) mins[0] = p[0];if (maxs[0] < p[0]) maxs[0] = p[0];
733 if (mins[1] > p[1]) mins[1] = p[1];if (maxs[1] < p[1]) maxs[1] = p[1];
734 if (mins[2] > p[2]) mins[2] = p[2];if (maxs[2] < p[2]) maxs[2] = p[2];
741 if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
742 if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
743 if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
745 if (mins[0] >= clipmaxs[0] || maxs[0] <= clipmins[0]
746 || mins[1] >= clipmaxs[1] || maxs[1] <= clipmins[1]
747 || mins[2] >= clipmaxs[2] || maxs[2] <= clipmins[2]
748 || LightAndVis_CullBox(mins, maxs))
751 Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
752 ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
755 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light);
757 #define SHADOWSPHERE_SEGMENTS 16
759 shadowmesh_t *shadowsphere;
760 void R_CreateShadowSphere(void)
763 vec3_t angles, angles2, angles3, angles4;
765 shadowsphere = Mod_ShadowMesh_Begin(zonemempool, SHADOWSPHERE_SEGMENTS * SHADOWSPHERE_SEGMENTS / 2);
766 for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
768 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
770 angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
771 angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
773 VectorCopy(angles, angles2);
774 VectorCopy(angles, angles3);
775 VectorCopy(angles, angles4);
776 angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
777 angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
778 angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
779 angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
780 AngleVectorsFLU(angles, verts, NULL, NULL);
781 AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
782 AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
783 AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
784 VectorScale(&verts[0], 1.0f, &verts[0]);
785 VectorScale(&verts[3], 1.0f, &verts[3]);
786 VectorScale(&verts[6], 1.0f, &verts[6]);
787 VectorScale(&verts[9], 1.0f, &verts[9]);
788 Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
791 shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
795 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
800 R_CreateShadowSphere();
801 Matrix4x4_CreateScale(&matrix, lightradius);
802 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
803 R_Mesh_Matrix(&matrix);
804 for (mesh = shadowsphere;mesh;mesh = mesh->next)
806 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
807 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
809 Matrix4x4_CreateScale(&matrix, -cullradius);
810 Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
811 R_Mesh_Matrix(&matrix);
812 for (mesh = shadowsphere;mesh;mesh = mesh->next)
814 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
815 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
819 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);
820 void R_ShadowVolumeLighting (int visiblevolumes)
823 entity_render_t *ent;
825 float f, lightradius, cullradius;
826 vec3_t relativelightorigin, relativeeyeorigin, lightcolor, clipmins, clipmaxs;
835 memset(&m, 0, sizeof(m));
836 m.blendfunc1 = GL_ONE;
837 m.blendfunc2 = GL_ONE;
838 if (r_shadow_realtime.integer >= 3)
839 m.depthdisable = true;
841 qglDisable(GL_CULL_FACE);
842 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
845 R_Shadow_Stage_Begin();
847 for (lnum = 0, wl = r_shadow_worldlightchain;wl;wl = wl->next, lnum++)
849 if (d_lightstylevalue[wl->style] <= 0)
851 cullradius = wl->cullradius;
852 lightradius = wl->lightradius;
853 if (R_CullSphere(wl->origin, lightradius))
855 //if (R_CullBox(wl->mins, wl->maxs) || R_CullSphere(wl->origin, lightradius))
857 //if (VIS_CullBox(wl->mins, wl->maxs) || VIS_CullSphere(wl->origin, lightradius))
859 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
862 for (i = 0;i < wl->numleafs;i++)
863 if (wl->leafs[i]->visframe == r_framecount)
865 if (i == wl->numleafs)
867 leaf = wl->leafs[i++];
868 VectorCopy(leaf->mins, clipmins);
869 VectorCopy(leaf->maxs, clipmaxs);
870 for (i++;i < wl->numleafs;i++)
873 if (leaf->visframe == r_framecount)
875 if (clipmins[0] > leaf->mins[0]) clipmins[0] = leaf->mins[0];
876 if (clipmaxs[0] < leaf->maxs[0]) clipmaxs[0] = leaf->maxs[0];
877 if (clipmins[1] > leaf->mins[1]) clipmins[1] = leaf->mins[1];
878 if (clipmaxs[1] < leaf->maxs[1]) clipmaxs[1] = leaf->maxs[1];
879 if (clipmins[2] > leaf->mins[2]) clipmins[2] = leaf->mins[2];
880 if (clipmaxs[2] < leaf->maxs[2]) clipmaxs[2] = leaf->maxs[2];
883 if (clipmins[0] < wl->mins[0]) clipmins[0] = wl->mins[0];
884 if (clipmins[1] < wl->mins[1]) clipmins[1] = wl->mins[1];
885 if (clipmins[2] < wl->mins[2]) clipmins[2] = wl->mins[2];
886 if (clipmaxs[0] > wl->maxs[0]) clipmaxs[0] = wl->maxs[0];
887 if (clipmaxs[1] > wl->maxs[1]) clipmaxs[1] = wl->maxs[1];
888 if (clipmaxs[2] > wl->maxs[2]) clipmaxs[2] = wl->maxs[2];
890 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, wl->origin, wl->cullradius))
893 // mark the leafs we care about so only things in those leafs will matter
894 for (i = 0;i < wl->numleafs;i++)
895 wl->leafs[i]->worldnodeframe = shadowframecount;
898 f = d_lightstylevalue[wl->style] * (1.0f / 256.0f);
899 VectorScale(wl->light, f, lightcolor);
902 f = 2 + sin(realtime * M_PI * 4.0);
903 VectorScale(lightcolor, f, lightcolor);
907 R_Shadow_Stage_ShadowVolumes();
908 ent = &cl_entities[0].render;
909 if (wl->shadowvolume && r_shadow_staticworldlights.integer)
910 R_Shadow_DrawWorldLightShadowVolume(&ent->matrix, wl);
912 R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
913 if (r_drawentities.integer)
915 for (i = 0;i < r_refdef.numentities;i++)
917 ent = r_refdef.entities[i];
918 if (ent->model && !strcmp(ent->model->name, "progs/missile.mdl"))
919 R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
925 R_Shadow_Stage_Light();
926 ent = &cl_entities[0].render;
927 if (ent->model && ent->model->DrawLight)
929 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
930 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
932 R_Model_Brush_DrawLightForSurfaceList(ent, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, wl->surfaces, wl->numsurfaces);
934 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
936 if (r_drawentities.integer)
938 for (i = 0;i < r_refdef.numentities;i++)
940 ent = r_refdef.entities[i];
941 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
942 && ent->maxs[0] >= wl->mins[0] && ent->mins[0] <= wl->maxs[0]
943 && ent->maxs[1] >= wl->mins[1] && ent->mins[1] <= wl->maxs[1]
944 && ent->maxs[2] >= wl->mins[2] && ent->mins[2] <= wl->maxs[2]
945 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
947 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
948 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
949 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
956 for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
958 if (d_lightstylevalue[sl->style] <= 0)
960 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
962 cullradius = sl->cullradius;
963 lightradius = sl->lightradius;
964 if (VIS_CullBox(sl->mins, sl->maxs) || VIS_CullSphere(sl->origin, lightradius))
967 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
968 VectorScale(sl->light, f, lightcolor);
971 R_Shadow_Stage_ShadowVolumes();
972 if (sl->shadowvolume && r_shadow_staticworldlights.integer)
973 R_DrawWorldLightShadowVolume(&cl_entities[0].render.matrix, sl->shadowvolume);
975 R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
976 if (r_drawentities.integer)
978 for (i = 0;i < r_refdef.numentities;i++)
980 ent = r_refdef.entities[i];
981 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
982 && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
983 && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
984 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
985 R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
991 R_Shadow_Stage_Light();
992 ent = &cl_entities[0].render;
993 if (ent->model && ent->model->DrawLight)
995 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
996 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
997 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
999 if (r_drawentities.integer)
1001 for (i = 0;i < r_refdef.numentities;i++)
1003 ent = r_refdef.entities[i];
1004 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1005 && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
1006 && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
1007 && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
1008 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1010 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1011 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1012 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
1019 for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
1021 cullradius = rd->cullradius;
1022 lightradius = rd->cullradius;
1023 if (VIS_CullSphere(rd->origin, lightradius))
1026 VectorScale(rd->light, (1.0f / 8192.0f), lightcolor);
1027 clipmins[0] = rd->origin[0] - cullradius;
1028 clipmins[1] = rd->origin[1] - cullradius;
1029 clipmins[2] = rd->origin[2] - cullradius;
1030 clipmaxs[0] = rd->origin[0] + cullradius;
1031 clipmaxs[1] = rd->origin[1] + cullradius;
1032 clipmaxs[2] = rd->origin[2] + cullradius;
1034 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, rd->origin, rd->cullradius))
1037 if (!visiblevolumes)
1038 R_Shadow_Stage_ShadowVolumes();
1039 ent = &cl_entities[0].render;
1040 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1041 if (r_drawentities.integer)
1043 for (i = 0;i < r_refdef.numentities;i++)
1045 ent = r_refdef.entities[i];
1047 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1051 if (!visiblevolumes)
1053 R_Shadow_Stage_Light();
1054 ent = &cl_entities[0].render;
1055 if (ent->model && ent->model->DrawLight)
1057 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1058 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1059 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1061 if (r_drawentities.integer)
1063 for (i = 0;i < r_refdef.numentities;i++)
1065 ent = r_refdef.entities[i];
1066 if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1067 && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1069 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1070 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1071 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1078 if (!visiblevolumes)
1079 R_Shadow_Stage_End();
1080 qglEnable(GL_CULL_FACE);
1081 qglDisable(GL_SCISSOR_TEST);
1084 static void R_SetFrustum (void)
1088 // LordHavoc: note to all quake engine coders, the special case for 90
1089 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
1090 // disabled as well.
1091 // rotate VPN right by FOV_X/2 degrees
1092 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1093 // rotate VPN left by FOV_X/2 degrees
1094 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1095 // rotate VPN up by FOV_X/2 degrees
1096 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1097 // rotate VPN down by FOV_X/2 degrees
1098 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1100 for (i = 0;i < 4;i++)
1102 frustum[i].type = PLANE_ANYZ;
1103 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
1104 PlaneClassify(&frustum[i]);
1113 static void R_SetupFrame (void)
1115 // don't allow cheats in multiplayer
1116 if (cl.maxclients > 1)
1118 if (r_fullbright.integer != 0)
1119 Cvar_Set ("r_fullbright", "0");
1120 if (r_ambient.value != 0)
1121 Cvar_Set ("r_ambient", "0");
1126 // build the transformation matrix for the given view angles
1127 VectorCopy (r_refdef.vieworg, r_origin);
1129 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1135 static void R_BlendView(void)
1140 if (r_refdef.viewblend[3] < 0.01f)
1143 memset(&m, 0, sizeof(m));
1144 m.blendfunc1 = GL_SRC_ALPHA;
1145 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1146 m.depthdisable = true; // magic
1147 R_Mesh_Matrix(&r_identitymatrix);
1151 varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1152 varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1153 varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1155 varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1156 varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1157 varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1158 varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1159 varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1160 varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1161 GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1162 R_Mesh_Draw(3, 1, polygonelements);
1169 r_refdef must be set before the first call
1172 void R_RenderView (void)
1174 entity_render_t *world;
1175 if (!r_refdef.entities/* || !cl.worldmodel*/)
1176 return; //Host_Error ("R_RenderView: NULL worldmodel");
1178 if (r_shadow_realtime.integer == 1)
1180 if (!gl_texturecubemap)
1182 Con_Printf("Cubemap texture support not detected, turning off r_shadow_realtime\n");
1183 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1185 else if (!gl_dot3arb)
1187 Con_Printf("Bumpmapping support not detected, turning off r_shadow_realtime\n");
1188 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1190 else if (!gl_stencil)
1192 Con_Printf("Stencil not enabled, turning off r_shadow_realtime, please type vid_stencil 1;vid_bitsperpixel 32;vid_restart and try again\n");
1193 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1195 else if (!gl_combine.integer)
1197 Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadow_realtime\n");
1198 Cvar_SetValueQuick(&r_shadow_realtime, 0);
1202 R_Shadow_UpdateLightingMode();
1204 world = &cl_entities[0].render;
1206 // FIXME: move to client
1208 R_TimeReport("mexplosion");
1216 R_TimeReport("setup");
1218 R_WorldVisibility(world);
1219 R_TimeReport("worldvis");
1221 R_FarClip_Start(r_origin, vpn, 768.0f);
1223 r_farclip = R_FarClip_Finish() + 256.0f;
1224 R_TimeReport("markentity");
1226 GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1227 if (r_shadow_lightingmode > 0)
1228 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1230 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1231 GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1232 qglDepthFunc(GL_LEQUAL);
1235 R_MeshQueue_BeginScene();
1237 if (r_shadow_lightingmode)
1238 R_Shadow_UpdateWorldLightSelection();
1240 if (R_DrawBrushModelsSky())
1241 R_TimeReport("bmodelsky");
1243 // must occur early because it can draw sky
1245 R_TimeReport("world");
1247 // don't let sound skip if going slow
1248 if (!intimerefresh && !r_speeds.integer)
1251 R_DrawModels(r_shadow_lightingmode > 0);
1252 R_TimeReport("models");
1254 if (r_shadows.integer == 1 && r_shadow_lightingmode <= 0)
1256 R_DrawFakeShadows();
1257 R_TimeReport("fakeshadow");
1260 if (r_shadow_lightingmode > 0)
1262 R_ShadowVolumeLighting(false);
1263 R_TimeReport("dynlight");
1267 R_TimeReport("particles");
1270 R_TimeReport("explosions");
1272 R_MeshQueue_RenderTransparent();
1273 R_TimeReport("drawtrans");
1276 R_TimeReport("coronas");
1278 R_DrawWorldCrosshair();
1279 R_TimeReport("crosshair");
1282 R_TimeReport("blendview");
1284 R_MeshQueue_Render();
1285 R_MeshQueue_EndScene();
1286 if (r_shadow_realtime.integer >= 2)
1288 R_ShadowVolumeLighting(true);
1289 R_TimeReport("shadowvolume");
1292 R_TimeReport("meshfinish");
1296 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1299 float *v, *c, f1, f2, diff[3];
1301 m.blendfunc1 = GL_SRC_ALPHA;
1302 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1303 R_Mesh_Matrix(&r_identitymatrix);
1306 varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1307 varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1308 varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1309 varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1310 varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1311 varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1312 varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1313 varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1314 R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1317 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1319 VectorSubtract(v, r_origin, diff);
1320 f2 = exp(fogdensity/DotProduct(diff, diff));
1323 c[0] = c[0] * f1 + fogcolor[0] * f2;
1324 c[1] = c[1] * f1 + fogcolor[1] * f2;
1325 c[2] = c[2] * f1 + fogcolor[2] * f2;
1333 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1335 const entity_render_t *ent = calldata1;
1337 float f1, f2, *c, diff[3];
1339 memset(&m, 0, sizeof(m));
1340 if (ent->flags & EF_ADDITIVE)
1342 m.blendfunc1 = GL_SRC_ALPHA;
1343 m.blendfunc2 = GL_ONE;
1345 else if (ent->alpha < 1)
1347 m.blendfunc1 = GL_SRC_ALPHA;
1348 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1352 m.blendfunc1 = GL_ONE;
1353 m.blendfunc2 = GL_ZERO;
1355 R_Mesh_Matrix(&ent->matrix);
1358 element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1359 element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1360 element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1361 element[ 9] = 5;element[10] = 3;element[11] = 1;
1362 element[12] = 0;element[13] = 2;element[14] = 4;
1363 element[15] = 2;element[16] = 1;element[17] = 4;
1364 element[18] = 3;element[19] = 0;element[20] = 4;
1365 element[21] = 1;element[22] = 3;element[23] = 4;
1366 varray_vertex[ 0] = -16;varray_vertex[ 1] = 0;varray_vertex[ 2] = 0;
1367 varray_vertex[ 4] = 16;varray_vertex[ 5] = 0;varray_vertex[ 6] = 0;
1368 varray_vertex[ 8] = 0;varray_vertex[ 9] = -16;varray_vertex[10] = 0;
1369 varray_vertex[12] = 0;varray_vertex[13] = 16;varray_vertex[14] = 0;
1370 varray_vertex[16] = 0;varray_vertex[17] = 0;varray_vertex[18] = -16;
1371 varray_vertex[20] = 0;varray_vertex[21] = 0;varray_vertex[22] = 16;
1372 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;
1373 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;
1374 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;
1375 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;
1376 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;
1377 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;
1380 VectorSubtract(ent->origin, r_origin, diff);
1381 f2 = exp(fogdensity/DotProduct(diff, diff));
1383 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1385 c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1386 c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1387 c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1392 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1394 c[0] *= r_colorscale;
1395 c[1] *= r_colorscale;
1396 c[2] *= r_colorscale;
1400 R_Mesh_Draw(6, 8, element);
1403 void R_DrawNoModel(entity_render_t *ent)
1405 //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1406 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1408 // R_DrawNoModelCallback(ent, 0);
1411 void R_CalcBeamVerts (float *vert, const vec3_t org1, const vec3_t org2, float width)
1413 vec3_t right1, right2, diff, normal;
1415 VectorSubtract (org2, org1, normal);
1416 VectorNormalizeFast (normal);
1418 // calculate 'right' vector for start
1419 VectorSubtract (r_origin, org1, diff);
1420 VectorNormalizeFast (diff);
1421 CrossProduct (normal, diff, right1);
1423 // calculate 'right' vector for end
1424 VectorSubtract (r_origin, org2, diff);
1425 VectorNormalizeFast (diff);
1426 CrossProduct (normal, diff, right2);
1428 vert[ 0] = org1[0] + width * right1[0];
1429 vert[ 1] = org1[1] + width * right1[1];
1430 vert[ 2] = org1[2] + width * right1[2];
1431 vert[ 4] = org1[0] - width * right1[0];
1432 vert[ 5] = org1[1] - width * right1[1];
1433 vert[ 6] = org1[2] - width * right1[2];
1434 vert[ 8] = org2[0] - width * right2[0];
1435 vert[ 9] = org2[1] - width * right2[1];
1436 vert[10] = org2[2] - width * right2[2];
1437 vert[12] = org2[0] + width * right2[0];
1438 vert[13] = org2[1] + width * right2[1];
1439 vert[14] = org2[2] + width * right2[2];