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 glDrawBuffer (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;
109 glDrawBuffer (GL_BACK);
111 stop = Sys_DoubleTime ();
114 Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
117 extern cvar_t r_drawportals;
119 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
122 mnode_t *nodestack[8192], *node;
125 if (R_CullBox(mins, maxs))
128 node = cl.worldmodel->nodes;
130 if (node->contents < 0)
132 if (((mleaf_t *)node)->visframe == r_framecount)
136 node = nodestack[--stack];
140 sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
142 // recurse down the contacted sides
147 // put second child on the stack for later examination
148 nodestack[stack++] = node->children[1];
149 node = node->children[0];
154 node = node->children[0];
159 node = node->children[1];
165 float fog_density, fog_red, fog_green, fog_blue;
167 qboolean oldgl_fogenable;
168 void R_SetupFog(void)
170 if (gamemode == GAME_NEHAHRA)
172 if (gl_fogenable.integer)
174 oldgl_fogenable = true;
175 fog_density = gl_fogdensity.value;
176 fog_red = gl_fogred.value;
177 fog_green = gl_foggreen.value;
178 fog_blue = gl_fogblue.value;
180 else if (oldgl_fogenable)
182 oldgl_fogenable = false;
191 fogcolor[0] = fog_red = bound(0.0f, fog_red , 1.0f);
192 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
193 fogcolor[2] = fog_blue = bound(0.0f, fog_blue , 1.0f);
198 fogdensity = -4000.0f / (fog_density * fog_density);
199 // fog color was already set
205 // FIXME: move this to client?
208 if (gamemode == GAME_NEHAHRA)
210 Cvar_Set("gl_fogenable", "0");
211 Cvar_Set("gl_fogdensity", "0.2");
212 Cvar_Set("gl_fogred", "0.3");
213 Cvar_Set("gl_foggreen", "0.3");
214 Cvar_Set("gl_fogblue", "0.3");
216 fog_density = fog_red = fog_green = fog_blue = 0.0f;
219 // FIXME: move this to client?
220 void FOG_registercvars(void)
222 if (gamemode == GAME_NEHAHRA)
224 Cvar_RegisterVariable (&gl_fogenable);
225 Cvar_RegisterVariable (&gl_fogdensity);
226 Cvar_RegisterVariable (&gl_fogred);
227 Cvar_RegisterVariable (&gl_foggreen);
228 Cvar_RegisterVariable (&gl_fogblue);
229 Cvar_RegisterVariable (&gl_fogstart);
230 Cvar_RegisterVariable (&gl_fogend);
234 void gl_main_start(void)
238 void gl_main_shutdown(void)
242 void gl_main_newmap(void)
247 void GL_Main_Init(void)
249 // FIXME: move this to client?
251 Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
252 Cvar_RegisterVariable (&r_drawentities);
253 Cvar_RegisterVariable (&r_drawviewmodel);
254 Cvar_RegisterVariable (&r_speeds);
255 // Cvar_RegisterVariable (&r_dynamicwater);
256 // Cvar_RegisterVariable (&r_dynamicbothsides);
257 Cvar_RegisterVariable (&r_fullbrights);
258 Cvar_RegisterVariable (&r_wateralpha);
259 Cvar_RegisterVariable (&r_dynamic);
260 Cvar_RegisterVariable (&r_waterripple);
261 Cvar_RegisterVariable (&r_fullbright);
262 Cvar_RegisterVariable (&r_ser);
263 // Cvar_RegisterVariable (&gl_viewmodeldepthhack);
264 Cvar_RegisterVariable (&r_multitexture);
265 if (gamemode == GAME_NEHAHRA)
266 Cvar_SetValue("r_fullbrights", 0);
267 R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
275 void CL_ParseEntityLump(char *entitystring);
280 for (i=0 ; i<256 ; i++)
281 d_lightstylevalue[i] = 264; // normal light value
284 if (cl.worldmodel->entities)
285 CL_ParseEntityLump(cl.worldmodel->entities);
289 extern void R_Textures_Init(void);
290 extern void Mod_RenderInit(void);
291 extern void GL_Draw_Init(void);
292 extern void GL_Main_Init(void);
293 extern void GL_Models_Init(void);
294 extern void R_Sky_Init(void);
295 extern void GL_Surf_Init(void);
296 extern void R_Crosshairs_Init(void);
297 extern void R_Light_Init(void);
298 extern void R_Particles_Init(void);
299 extern void R_Explosion_Init(void);
300 extern void R_Clip_Init(void);
301 extern void ui_init(void);
302 extern void gl_backend_init(void);
304 void Render_Init(void)
306 R_Modules_Shutdown();
329 extern char *ENGINE_EXTENSIONS;
332 gl_vendor = glGetString (GL_VENDOR);
333 Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
334 gl_renderer = glGetString (GL_RENDERER);
335 Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
337 gl_version = glGetString (GL_VERSION);
338 Con_Printf ("GL_VERSION: %s\n", gl_version);
339 gl_extensions = glGetString (GL_EXTENSIONS);
340 Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
342 // Con_Printf ("%s %s\n", gl_renderer, gl_version);
344 VID_CheckExtensions();
346 // LordHavoc: report supported extensions
347 Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
349 glCullFace(GL_FRONT);
350 glEnable(GL_TEXTURE_2D);
352 // glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
356 //==================================================================================
358 void R_Entity_Callback(void *data, void *junk)
360 ((entity_render_t *)data)->visframe = r_framecount;
363 static void R_MarkEntities (void)
368 if (!r_drawentities.integer)
371 for (i = 0;i < r_refdef.numentities;i++)
373 currentrenderentity = r_refdef.entities[i];
374 Mod_CheckLoaded(currentrenderentity->model);
376 // move view-relative models to where they should be
377 if (currentrenderentity->flags & RENDER_VIEWMODEL)
379 // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
380 currentrenderentity->flags -= RENDER_VIEWMODEL;
382 VectorCopy(currentrenderentity->origin, v);
383 currentrenderentity->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
384 currentrenderentity->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
385 currentrenderentity->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
387 VectorAdd(currentrenderentity->angles, r_refdef.viewangles, currentrenderentity->angles);
390 if (currentrenderentity->angles[0] || currentrenderentity->angles[2])
392 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmins, currentrenderentity->mins);
393 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmaxs, currentrenderentity->maxs);
395 else if (currentrenderentity->angles[1])
397 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmins, currentrenderentity->mins);
398 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmaxs, currentrenderentity->maxs);
402 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmins, currentrenderentity->mins);
403 VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmaxs, currentrenderentity->maxs);
405 if (R_VisibleCullBox(currentrenderentity->mins, currentrenderentity->maxs))
408 R_LerpAnimation(currentrenderentity);
410 currentrenderentity->model->SERAddEntity();
412 currentrenderentity->visframe = r_framecount;
416 // only used if skyrendermasked, and normally returns false
417 int R_DrawBModelSky (void)
421 if (!r_drawentities.integer)
424 for (i = 0;i < r_refdef.numentities;i++)
426 currentrenderentity = r_refdef.entities[i];
427 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawSky)
429 currentrenderentity->model->DrawSky();
436 void R_DrawModels (void)
440 if (!r_drawentities.integer)
443 for (i = 0;i < r_refdef.numentities;i++)
445 currentrenderentity = r_refdef.entities[i];
446 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->Draw)
447 currentrenderentity->model->Draw();
456 void R_DrawViewModel (void)
458 // FIXME: move these checks to client
459 if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
462 currentrenderentity = &cl.viewent.render;
463 Mod_CheckLoaded(currentrenderentity->model);
465 R_LerpAnimation(currentrenderentity);
467 // hack the depth range to prevent view model from poking into walls
468 // if (gl_viewmodeldepthhack.integer)
471 // glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
473 currentrenderentity->model->Draw();
474 // if (gl_viewmodeldepthhack.integer)
477 // glDepthRange (gldepthmin, gldepthmax);
481 static void R_SetFrustum (void)
485 // LordHavoc: note to all quake engine coders, the special case for 90
486 // degrees assumed a square view (wrong), so I removed it, Quake2 has it
488 // rotate VPN right by FOV_X/2 degrees
489 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
490 // rotate VPN left by FOV_X/2 degrees
491 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
492 // rotate VPN up by FOV_X/2 degrees
493 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
494 // rotate VPN down by FOV_X/2 degrees
495 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
498 for (i=0 ; i<4 ; i++)
500 frustum[i].type = PLANE_ANYZ;
501 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
502 PlaneClassify(&frustum[i]);
511 static void R_SetupFrame (void)
513 // don't allow cheats in multiplayer
514 if (cl.maxclients > 1)
516 if (r_fullbright.integer != 0)
517 Cvar_Set ("r_fullbright", "0");
518 if (r_ambient.value != 0)
519 Cvar_Set ("r_ambient", "0");
521 if (r_multitexture.integer && gl_textureunits < 2)
522 Cvar_SetValue("r_multitexture", 0);
526 // build the transformation matrix for the given view angles
527 VectorCopy (r_refdef.vieworg, r_origin);
529 AngleVectors (r_refdef.viewangles, vpn, vright, vup);
532 r_oldviewleaf = r_viewleaf;
533 r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
535 // r_cache_thrash = false;
541 static int blendviewpolyindex[3] = {0, 1, 2};
543 static void R_BlendView(void)
546 float tvxyz[3][4], r;
548 if (!r_render.integer)
551 if (r_refdef.viewblend[3] < 0.01f)
554 memset(&m, 0, sizeof(m));
555 m.transparent = false;
556 m.blendfunc1 = GL_SRC_ALPHA;
557 m.blendfunc2 = GL_ONE;
558 m.depthdisable = true; // magic
561 m.index = blendviewpolyindex;
562 m.vertex = &tvxyz[0][0];
563 m.vertexstep = sizeof(float[4]);
564 m.cr = r_refdef.viewblend[0];
565 m.cg = r_refdef.viewblend[1];
566 m.cb = r_refdef.viewblend[2];
567 m.ca = r_refdef.viewblend[3];
569 tvxyz[0][0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
570 tvxyz[0][1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
571 tvxyz[0][2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
573 tvxyz[1][0] = tvxyz[0][0] + vup[0] * r;
574 tvxyz[1][1] = tvxyz[0][1] + vup[1] * r;
575 tvxyz[1][2] = tvxyz[0][2] + vup[2] * r;
576 tvxyz[2][0] = tvxyz[0][0] + vright[0] * r;
577 tvxyz[2][1] = tvxyz[0][1] + vright[1] * r;
578 tvxyz[2][2] = tvxyz[0][2] + vright[2] * r;
582 glMatrixMode(GL_PROJECTION);
584 glOrtho (0, 1, 1, 0, -99999, 99999);
585 glMatrixMode(GL_MODELVIEW);
587 glDisable (GL_DEPTH_TEST);
588 glDisable (GL_CULL_FACE);
589 glDisable(GL_TEXTURE_2D);
591 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
592 glBegin (GL_TRIANGLES);
593 glColor4f (r_refdef.viewblend[0] * overbrightscale, r_refdef.viewblend[1] * overbrightscale, r_refdef.viewblend[2] * overbrightscale, r_refdef.viewblend[3]);
599 glEnable (GL_CULL_FACE);
600 glEnable (GL_DEPTH_TEST);
602 glEnable(GL_TEXTURE_2D);
610 r_refdef must be set before the first call
613 void R_RenderView (void)
616 return; //Host_Error ("R_RenderView: NULL worldmodel");
618 // FIXME: move to client
620 R_TimeReport("mexplosion");
632 R_TimeReport("setup");
635 R_TimeReport("worldnode");
638 R_TimeReport("markentity");
643 R_TimeReport("hiddensurf");
647 R_TimeReport("marklights");
651 if (R_DrawBModelSky())
652 R_TimeReport("bmodelsky");
657 R_TimeReport("viewmodel");
660 R_SetupForWorldRendering();
662 R_TimeReport("surfprep");
664 R_DrawSurfaces(SHADERSTAGE_SKY);
665 R_DrawSurfaces(SHADERSTAGE_NORMAL);
666 R_TimeReport("surfdraw");
668 if (r_drawportals.integer)
671 R_TimeReport("portals");
674 // don't let sound skip if going slow
675 if (!intimerefresh && !r_speeds.integer)
681 R_TimeReport("viewmodel");
685 R_TimeReport("models");
688 R_TimeReport("particles");
691 R_TimeReport("explosions");
693 // draw transparent meshs
694 R_Mesh_AddTransparent();
695 R_TimeReport("addtrans");
698 R_TimeReport("coronas");
701 R_TimeReport("blendview");
703 // render any queued meshs
705 R_TimeReport("meshfinish");
707 //Mem_CheckSentinelsGlobal();
708 //R_TimeReport("memtest");