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 //static qboolean r_cache_thrash; // compatability
26 entity_render_t *currentrenderentity;
28 int r_framecount; // used for dlight push checking
32 int c_brush_polys, c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
34 qboolean envmap; // true during envmap command capture
36 // LordHavoc: moved all code related to particles into r_part.c
37 //int particletexture; // little dot for particles
38 //int playertextures; // up to 16 color translated skins
48 //float r_world_matrix[16];
49 //float r_base_world_matrix[16];
56 mleaf_t *r_viewleaf, *r_oldviewleaf;
58 unsigned short d_lightstylevalue[256]; // 8.8 fraction of base light value
60 //cvar_t r_norefresh = {0, "r_norefresh","0"};
61 cvar_t r_drawentities = {0, "r_drawentities","1"};
62 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
63 cvar_t r_speeds = {0, "r_speeds","0"};
64 cvar_t r_fullbright = {0, "r_fullbright","0"};
65 //cvar_t r_lightmap = {0, "r_lightmap","0"};
66 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
67 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
68 cvar_t r_waterripple = {CVAR_SAVE, "r_waterripple","0"};
69 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
71 //cvar_t r_dynamicbothsides = {CVAR_SAVE, "r_dynamicbothsides", "1"}; // LordHavoc: can disable dynamic lighting of backfaces, but quake maps are weird so it doesn't always work right...
73 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
74 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
75 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
76 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
77 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
78 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
79 cvar_t gl_fogend = {0, "gl_fogend","0"};
81 cvar_t r_ser = {CVAR_SAVE, "r_ser", "1"};
82 //cvar_t gl_viewmodeldepthhack = {0, "gl_viewmodeldepthhack", "1"};
84 cvar_t r_multitexture = {0, "r_multitexture", "1"};
90 For program optimization
93 qboolean intimerefresh = 0;
94 static void R_TimeRefresh_f (void)
97 float start, stop, time;
100 start = Sys_DoubleTime ();
101 //qglDrawBuffer (GL_FRONT);
102 for (i = 0;i < 128;i++)
104 r_refdef.viewangles[0] = 0;
105 r_refdef.viewangles[1] = i/128.0*360.0;
106 r_refdef.viewangles[2] = 0;
110 //qglDrawBuffer (GL_BACK);
112 stop = Sys_DoubleTime ();
115 Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
118 extern cvar_t r_drawportals;
120 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
123 mnode_t *nodestack[8192], *node;
126 if (R_CullBox(mins, maxs))
129 node = cl.worldmodel->nodes;
131 if (node->contents < 0)
133 if (((mleaf_t *)node)->visframe == r_framecount)
137 node = nodestack[--stack];
141 sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
143 // recurse down the contacted sides
148 // put second child on the stack for later examination
149 nodestack[stack++] = node->children[1];
150 node = node->children[0];
155 node = node->children[0];
160 node = node->children[1];
166 float fog_density, fog_red, fog_green, fog_blue;
168 qboolean oldgl_fogenable;
169 void R_SetupFog(void)
171 if (gamemode == GAME_NEHAHRA)
173 if (gl_fogenable.integer)
175 oldgl_fogenable = true;
176 fog_density = gl_fogdensity.value;
177 fog_red = gl_fogred.value;
178 fog_green = gl_foggreen.value;
179 fog_blue = gl_fogblue.value;
181 else if (oldgl_fogenable)
183 oldgl_fogenable = false;
192 fogcolor[0] = fog_red = bound(0.0f, fog_red , 1.0f);
193 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
194 fogcolor[2] = fog_blue = bound(0.0f, fog_blue , 1.0f);
199 fogdensity = -4000.0f / (fog_density * fog_density);
200 // fog color was already set
206 // FIXME: move this to client?
209 if (gamemode == GAME_NEHAHRA)
211 Cvar_Set("gl_fogenable", "0");
212 Cvar_Set("gl_fogdensity", "0.2");
213 Cvar_Set("gl_fogred", "0.3");
214 Cvar_Set("gl_foggreen", "0.3");
215 Cvar_Set("gl_fogblue", "0.3");
217 fog_density = fog_red = fog_green = fog_blue = 0.0f;
220 // FIXME: move this to client?
221 void FOG_registercvars(void)
223 if (gamemode == GAME_NEHAHRA)
225 Cvar_RegisterVariable (&gl_fogenable);
226 Cvar_RegisterVariable (&gl_fogdensity);
227 Cvar_RegisterVariable (&gl_fogred);
228 Cvar_RegisterVariable (&gl_foggreen);
229 Cvar_RegisterVariable (&gl_fogblue);
230 Cvar_RegisterVariable (&gl_fogstart);
231 Cvar_RegisterVariable (&gl_fogend);
235 void gl_main_start(void)
239 void gl_main_shutdown(void)
243 void gl_main_newmap(void)
248 void GL_Main_Init(void)
250 // FIXME: move this to client?
252 Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
253 Cvar_RegisterVariable (&r_drawentities);
254 Cvar_RegisterVariable (&r_drawviewmodel);
255 Cvar_RegisterVariable (&r_speeds);
256 // Cvar_RegisterVariable (&r_dynamicwater);
257 // Cvar_RegisterVariable (&r_dynamicbothsides);
258 Cvar_RegisterVariable (&r_fullbrights);
259 Cvar_RegisterVariable (&r_wateralpha);
260 Cvar_RegisterVariable (&r_dynamic);
261 Cvar_RegisterVariable (&r_waterripple);
262 Cvar_RegisterVariable (&r_fullbright);
263 Cvar_RegisterVariable (&r_ser);
264 // Cvar_RegisterVariable (&gl_viewmodeldepthhack);
265 Cvar_RegisterVariable (&r_multitexture);
266 if (gamemode == GAME_NEHAHRA)
267 Cvar_SetValue("r_fullbrights", 0);
268 R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
276 void CL_ParseEntityLump(char *entitystring);
281 for (i=0 ; i<256 ; i++)
282 d_lightstylevalue[i] = 264; // normal light value
285 if (cl.worldmodel->entities)
286 CL_ParseEntityLump(cl.worldmodel->entities);
290 extern void R_Textures_Init(void);
291 extern void Mod_RenderInit(void);
292 extern void GL_Draw_Init(void);
293 extern void GL_Main_Init(void);
294 extern void GL_Models_Init(void);
295 extern void R_Sky_Init(void);
296 extern void GL_Surf_Init(void);
297 extern void R_Crosshairs_Init(void);
298 extern void R_Light_Init(void);
299 extern void R_Particles_Init(void);
300 extern void R_Explosion_Init(void);
301 extern void R_Clip_Init(void);
302 extern void ui_init(void);
303 extern void gl_backend_init(void);
305 void Render_Init(void)
307 R_Modules_Shutdown();
330 extern char *ENGINE_EXTENSIONS;
333 gl_vendor = glGetString (GL_VENDOR);
334 Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
335 gl_renderer = glGetString (GL_RENDERER);
336 Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
338 gl_version = glGetString (GL_VERSION);
339 Con_Printf ("GL_VERSION: %s\n", gl_version);
340 gl_extensions = glGetString (GL_EXTENSIONS);
341 Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
343 // Con_Printf ("%s %s\n", gl_renderer, gl_version);
345 VID_CheckExtensions();
347 // LordHavoc: report supported extensions
348 Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
350 qglCullFace(GL_FRONT);
351 qglEnable(GL_TEXTURE_2D);
353 // qglPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
357 //==================================================================================
359 void R_Entity_Callback(void *data, void *junk)
361 ((entity_render_t *)data)->visframe = r_framecount;
364 static void R_MarkEntities (void)
369 if (!r_drawentities.integer)
372 for (i = 0;i < r_refdef.numentities;i++)
374 currentrenderentity = r_refdef.entities[i];
375 Mod_CheckLoaded(currentrenderentity->model);
377 // move view-relative models to where they should be
378 if (currentrenderentity->flags & RENDER_VIEWMODEL)
380 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
381 currentrenderentity->flags -= RENDER_VIEWMODEL;
383 VectorCopy(currentrenderentity->origin, v);
384 currentrenderentity->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
385 currentrenderentity->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
386 currentrenderentity->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
388 VectorAdd(currentrenderentity->angles, r_refdef.viewangles, currentrenderentity->angles);
391 if (currentrenderentity->angles[0] || currentrenderentity->angles[2])
393 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmins, currentrenderentity->mins);
394 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmaxs, currentrenderentity->maxs);
396 else if (currentrenderentity->angles[1])
398 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmins, currentrenderentity->mins);
399 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmaxs, currentrenderentity->maxs);
403 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmins, currentrenderentity->mins);
404 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmaxs, currentrenderentity->maxs);
406 if (R_VisibleCullBox(currentrenderentity->mins, currentrenderentity->maxs))
409 R_LerpAnimation(currentrenderentity);
411 currentrenderentity->model->SERAddEntity();
413 currentrenderentity->visframe = r_framecount;
417 // only used if skyrendermasked, and normally returns false
418 int R_DrawBModelSky (void)
422 if (!r_drawentities.integer)
425 for (i = 0;i < r_refdef.numentities;i++)
427 currentrenderentity = r_refdef.entities[i];
428 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawSky)
430 currentrenderentity->model->DrawSky();
437 void R_DrawModels (void)
441 if (!r_drawentities.integer)
444 for (i = 0;i < r_refdef.numentities;i++)
446 currentrenderentity = r_refdef.entities[i];
447 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->Draw)
448 currentrenderentity->model->Draw();
457 void R_DrawViewModel (void)
459 // FIXME: move these checks to client
460 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
463 currentrenderentity = &cl.viewent.render;
464 Mod_CheckLoaded(currentrenderentity->model);
466 R_LerpAnimation(currentrenderentity);
468 // hack the depth range to prevent view model from poking into walls
469 // if (gl_viewmodeldepthhack.integer)
472 // qglDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
474 currentrenderentity->model->Draw();
475 // if (gl_viewmodeldepthhack.integer)
478 // qglDepthRange (gldepthmin, gldepthmax);
482 static void R_SetFrustum (void)
486 // LordHavoc: note to all quake engine coders, the special case for 90
487 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
489 // rotate VPN right by FOV_X/2 degrees
490 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
491 // rotate VPN left by FOV_X/2 degrees
492 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
493 // rotate VPN up by FOV_X/2 degrees
494 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
495 // rotate VPN down by FOV_X/2 degrees
496 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
499 for (i=0 ; i<4 ; i++)
501 frustum[i].type = PLANE_ANYZ;
502 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
503 PlaneClassify(&frustum[i]);
512 static void R_SetupFrame (void)
514 // don't allow cheats in multiplayer
515 if (cl.maxclients > 1)
517 if (r_fullbright.integer != 0)
518 Cvar_Set ("r_fullbright", "0");
519 if (r_ambient.value != 0)
520 Cvar_Set ("r_ambient", "0");
522 if (r_multitexture.integer && gl_textureunits < 2)
523 Cvar_SetValue("r_multitexture", 0);
527 // build the transformation matrix for the given view angles
528 VectorCopy (r_refdef.vieworg, r_origin);
530 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
533 r_oldviewleaf = r_viewleaf;
534 r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
536 // r_cache_thrash = false;
542 static int blendviewpolyindex[3] = {0, 1, 2};
544 static void R_BlendView(void)
547 float tvxyz[3][4], r;
549 if (!r_render.integer)
552 if (r_refdef.viewblend[3] < 0.01f)
555 memset(&m, 0, sizeof(m));
556 m.transparent = false;
557 m.blendfunc1 = GL_SRC_ALPHA;
558 m.blendfunc2 = GL_ONE;
559 m.depthdisable = true; // magic
562 m.index = blendviewpolyindex;
563 m.vertex = &tvxyz[0][0];
564 m.vertexstep = sizeof(float[4]);
565 m.cr = r_refdef.viewblend[0];
566 m.cg = r_refdef.viewblend[1];
567 m.cb = r_refdef.viewblend[2];
568 m.ca = r_refdef.viewblend[3];
570 tvxyz[0][0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
571 tvxyz[0][1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
572 tvxyz[0][2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
574 tvxyz[1][0] = tvxyz[0][0] + vup[0] * r;
575 tvxyz[1][1] = tvxyz[0][1] + vup[1] * r;
576 tvxyz[1][2] = tvxyz[0][2] + vup[2] * r;
577 tvxyz[2][0] = tvxyz[0][0] + vright[0] * r;
578 tvxyz[2][1] = tvxyz[0][1] + vright[1] * r;
579 tvxyz[2][2] = tvxyz[0][2] + vright[2] * r;
583 qglMatrixMode(GL_PROJECTION);
585 qglOrtho (0, 1, 1, 0, -99999, 99999);
586 qglMatrixMode(GL_MODELVIEW);
588 qglDisable (GL_DEPTH_TEST);
589 qglDisable (GL_CULL_FACE);
590 qglDisable(GL_TEXTURE_2D);
592 qglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
593 qglBegin (GL_TRIANGLES);
594 qglColor4f (r_refdef.viewblend[0] * overbrightscale, r_refdef.viewblend[1] * overbrightscale, r_refdef.viewblend[2] * overbrightscale, r_refdef.viewblend[3]);
595 qglVertex2f (-5, -5);
596 qglVertex2f (10, -5);
597 qglVertex2f (-5, 10);
600 qglEnable (GL_CULL_FACE);
601 qglEnable (GL_DEPTH_TEST);
602 qglDisable(GL_BLEND);
603 qglEnable(GL_TEXTURE_2D);
611 r_refdef must be set before the first call
614 void R_RenderView (void)
617 return; //Host_Error ("R_RenderView: NULL worldmodel");
619 // FIXME: move to client
621 R_TimeReport("mexplosion");
633 R_TimeReport("setup");
636 R_TimeReport("worldnode");
639 R_TimeReport("markentity");
644 R_TimeReport("hiddensurf");
648 R_TimeReport("marklights");
652 if (R_DrawBModelSky())
653 R_TimeReport("bmodelsky");
658 R_TimeReport("viewmodel");
661 R_SetupForWorldRendering();
663 R_TimeReport("surfprep");
665 R_DrawSurfaces(SHADERSTAGE_SKY);
666 R_DrawSurfaces(SHADERSTAGE_NORMAL);
667 R_TimeReport("surfdraw");
669 if (r_drawportals.integer)
672 R_TimeReport("portals");
675 // don't let sound skip if going slow
676 if (!intimerefresh && !r_speeds.integer)
682 R_TimeReport("viewmodel");
686 R_TimeReport("models");
689 R_TimeReport("particles");
692 R_TimeReport("explosions");
694 // draw transparent meshs
695 R_Mesh_AddTransparent();
696 R_TimeReport("addtrans");
699 R_TimeReport("coronas");
702 R_TimeReport("blendview");
704 // render any queued meshs
706 R_TimeReport("meshfinish");
708 //Mem_CheckSentinelsGlobal();
709 //R_TimeReport("memtest");