world.h

   1 #include "common.h"
   2
   3 static int ray_world( v3f pos, v3f dir, ray_hit *hit );
   4
   5 #ifndef WORLD_H
   6 #define WORLD_H
   7
   8 #include "scene.h"
   9 #include "terrain.h"
  10 #include "render.h"
  11 #include "water.h"
  12 #include "rigidbody.h"
  13 #include "gate.h"
  14 #include "bvh.h"
  15 #include "lighting.h"
  16 #include "model.h"
  17
  18 #include "traffic.h" /*TODO: -> world_traffic.h */
  19 #include "world_routes.h"
  20 #include "world_sfd.h"
  21
  22 #include "shaders/terrain.h"
  23 #include "shaders/sky.h"
  24 #include "shaders/planeinf.h"
  25 #include "shaders/standard.h"
  26 #include "shaders/vblend.h"
  27 #include "shaders/gpos.h"
  28 #include "shaders/fscolour.h"
  29 #include "shaders/alphatest.h"
  30
  31 static struct gworld
  32 {
  33    /* gameplay */
  34    struct respawn_point
  35    {
  36       v3f co;
  37       v4f q;
  38       char name[32];
  39    }
  40    spawns[32];
  41    u32 spawn_count;
  42
  43    struct subworld_routes routes;
  44    struct subworld_sfd sfd;
  45
  46    /* ...
  47    struct subworld_spawns system_spawns;
  48    struct subworld_physics system_physics;
  49    */
  50
  51    /* Paths */
  52    traffic_node traffic[128];
  53    u32 traffic_count;
  54
  55 #if 0
  56    traffic_driver van_man[6];
  57 #endif
  58
  59    /* Physics */
  60
  61    /* Rendering & geometry */
  62    scene geo, foliage;
  63    rigidbody rb_geo;
  64
  65    /* TODO Maybe make this less hardcoded */
  66    mdl_submesh sm_geo_std_oob, sm_geo_std, sm_geo_vb,
  67                sm_foliage_main, sm_foliage_alphatest,
  68                sm_graffiti, sm_subworld;
  69
  70    glmesh skybox, skydome;
  71    mdl_submesh dome_upper, dome_lower;
  72
  73    glmesh cars;
  74    mdl_submesh car_holden;
  75
  76    rigidbody mr_ball;
  77
  78    /* Load time */
  79
  80    struct instance_cache
  81    {
  82       mdl_header *mdl;
  83       u32 pstr_file;
  84    }
  85    * instance_cache;
  86    u32 instance_cache_count,
  87        instance_cache_cap;
  88 }
  89 world;
  90
  91 static struct subworld_routes *subworld_routes(void) { return &world.routes; }
  92 static struct subworld_sfd *subworld_sfd(void) { return &world.sfd; }
  93
  94
  95 vg_tex2d tex_terrain_colours = { .path = "textures/gradients.qoi",
  96                                  .flags = VG_TEXTURE_CLAMP|VG_TEXTURE_NEAREST };
  97
  98 vg_tex2d tex_terrain_noise = { .path = "textures/garbage.qoi",
  99                                  .flags = VG_TEXTURE_NEAREST };
 100
 101 vg_tex2d tex_alphatest = { .path = "textures/alphatest.qoi",
 102                                  .flags = VG_TEXTURE_NEAREST };
 103
 104 vg_tex2d tex_graffiti = { .path = "textures/graffitibox.qoi",
 105                                  .flags = VG_TEXTURE_NEAREST };
 106
 107 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
 108 {
 109    for( int i=0; i<3; i++ )
 110       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
 111 }
 112
 113 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
 114 {
 115    return scene_raycast( &world.geo, pos, dir, hit );
 116 }
 117
 118 static int ray_hit_is_ramp( ray_hit *hit )
 119 {
 120    return hit->tri[0] > world.sm_geo_std_oob.vertex_count;
 121 }
 122
 123 static void world_register(void)
 124 {
 125    shader_terrain_register();
 126    shader_sky_register();
 127    shader_planeinf_register();
 128    shader_gpos_register();
 129    shader_fscolour_register();
 130    shader_alphatest_register();
 131
 132    world_routes_register();
 133    world_sfd_register();
 134 }
 135
 136 static void world_free(void)
 137 {
 138    /* TODO.. */
 139
 140    world_sfd_free();
 141 }
 142
 143 static void render_world_depth( m4x4f projection, m4x3f camera );
 144
 145 static void add_all_if_material( m4x3f transform, scene *pscene,
 146                                  mdl_header *mdl, u32 id )
 147 {
 148    for( int i=0; i<mdl->node_count; i++ )
 149    {
 150       mdl_node *pnode = mdl_node_from_id( mdl, i );
 151
 152       for( int j=0; j<pnode->submesh_count; j++ )
 153       {
 154          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
 155
 156          if( sm->material_id == id )
 157          {
 158             m4x3f transform2;
 159             mdl_node_transform( pnode, transform2 );
 160             m4x3_mul( transform, transform2, transform2 );
 161
 162             scene_add_submesh( pscene, mdl, sm, transform2 );
 163          }
 164       }
 165
 166       if( pnode->classtype == k_classtype_instance )
 167       {
 168          if( pnode->sub_uid )
 169          {
 170             u32 instance_id = pnode->sub_uid -1;
 171             struct instance_cache *cache = &world.instance_cache[instance_id];
 172             mdl_header *mdl2 = cache->mdl;
 173
 174             m4x3f transform2;
 175             mdl_node_transform( pnode, transform2 );
 176             m4x3_mul( transform, transform2, transform2 );
 177
 178             add_all_if_material( transform2, pscene, mdl2, id );
 179          }
 180       }
 181    }
 182 }
 183
 184 static void world_apply_procedural_foliage(void)
 185 {
 186    mdl_header *mfoliage = mdl_load("models/rs_foliage.mdl");
 187
 188    v3f volume;
 189    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 190    volume[1] = 1.0f;
 191
 192    m4x3f transform;
 193    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
 194    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
 195
 196    for( int i=0;i<100000;i++ )
 197    {
 198       v3f pos;
 199       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 200       pos[1] = 1000.0f;
 201       v3_add( pos, world.geo.bbx[0], pos );
 202
 203       ray_hit hit;
 204       hit.dist = INFINITY;
 205
 206       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 207       {
 208          if( hit.normal[1] > 0.8f && !ray_hit_is_ramp(&hit) &&
 209              hit.pos[1] > water_height()+10.0f )
 210          {
 211             v4f qsurface, qrandom;
 212             v3f axis;
 213
 214             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 215
 216             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 217             q_axis_angle( qsurface, axis, angle );
 218             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 219             q_mul( qsurface, qrandom, qsurface );
 220             q_m3x3( qsurface, transform );
 221
 222             v3_copy( hit.pos, transform[3] );
 223             scene_add_submesh( &world.foliage, mfoliage, sm_blob, transform);
 224          }
 225       }
 226    }
 227    free( mfoliage );
 228 }
 229
 230 static void world_load(void)
 231 {
 232    mdl_header *mworld = mdl_load( "models/mp_dev.mdl" );
 233
 234    world.spawn_count = 0;
 235    world.traffic_count = 0;
 236    world.instance_cache = NULL;
 237
 238    /*
 239     * Process entities
 240     */
 241    for( int i=0; i<mworld->node_count; i++ )
 242    {
 243       mdl_node *pnode = mdl_node_from_id( mworld, i );
 244
 245       if( pnode->classtype == k_classtype_none )
 246       {}
 247       else if( pnode->classtype == k_classtype_spawn )
 248       {
 249          struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 250
 251          v3_copy( pnode->co, rp->co );
 252          v4_copy( pnode->q, rp->q );
 253          strcpy( rp->name, mdl_pstr( mworld, pnode->pstr_name ) );
 254       }
 255       else if( pnode->classtype == k_classtype_water )
 256       {
 257          if( wrender.enabled )
 258          {
 259             vg_warn( "Multiple water surfaces in level! ('%s')\n",
 260                   mdl_pstr( mworld, pnode->pstr_name ));
 261             continue;
 262          }
 263
 264          mdl_submesh *sm = mdl_node_submesh( mworld, pnode, 0 );
 265
 266          if( sm )
 267          {
 268             glmesh surf;
 269             mdl_unpack_submesh( mworld, &surf, sm );
 270             water_init();
 271             water_set_surface( &surf, pnode->co[1] );
 272          }
 273       }
 274       else if( pnode->classtype == k_classtype_car_path )
 275       {
 276          struct classtype_car_path *p = mdl_get_entdata( mworld, pnode );
 277          traffic_node *tn = &world.traffic[ world.traffic_count ];
 278          tn->mn_next = NULL;
 279          tn->mn_next1 = NULL;
 280
 281          if( p->target ) tn->mn_next = mdl_node_from_id( mworld, p->target );
 282          if( p->target1 ) tn->mn_next1 = mdl_node_from_id( mworld, p->target1 );
 283
 284          m4x3f transform;
 285          mdl_node_transform( pnode, transform );
 286          m3x3_mulv( transform, (v3f){1.0f,0.0f,0.0f}, tn->h );
 287          v3_copy( transform[3], tn->co );
 288
 289          pnode->sub_uid = world.traffic_count ++;
 290       }
 291       else if( pnode->classtype == k_classtype_instance )
 292       {
 293          struct classtype_instance *inst = mdl_get_entdata( mworld, pnode );
 294          pnode->sub_uid = 0;
 295
 296          int cached = 0;
 297          for( int i=0; i<world.instance_cache_count; i++ )
 298          {
 299             struct instance_cache *cache = &world.instance_cache[i];
 300             if( inst->pstr_file == cache->pstr_file )
 301             {
 302                cached = 1;
 303                pnode->sub_uid = i+1;
 304                break;
 305             }
 306          }
 307
 308          if( !cached )
 309          {
 310             world.instance_cache = buffer_reserve(
 311                             world.instance_cache, world.instance_cache_count,
 312                             &world.instance_cache_cap, 1,
 313                             sizeof(struct instance_cache) );
 314
 315             struct instance_cache *cache =
 316                &world.instance_cache[world.instance_cache_count];
 317
 318             const char *filename = mdl_pstr(mworld, inst->pstr_file);
 319
 320             cache->pstr_file = inst->pstr_file;
 321             cache->mdl = mdl_load( filename );
 322
 323             if( cache->mdl )
 324             {
 325                world.instance_cache_count ++;
 326                pnode->sub_uid = world.instance_cache_count;
 327                mdl_link_materials( mworld, cache->mdl );
 328                vg_success( "Cached %s\n", filename );
 329             }
 330             else
 331             {
 332                vg_warn( "Failed to cache %s\n", filename );
 333             }
 334          }
 335       }
 336    }
 337
 338    world.instance_cache = buffer_fix( world.instance_cache,
 339                                       world.instance_cache_count,
 340                                      &world.instance_cache_cap,
 341                                      sizeof( struct instance_cache ) );
 342
 343 #if 0
 344    traffic_finalize( world.traffic, world.traffic_count );
 345    for( int i=0; i<vg_list_size(world.van_man); i++ )
 346       world.van_man[i].current =&world.traffic[vg_randint(world.traffic_count)];
 347 #endif
 348
 349    /*
 350     * Compile meshes into the world scenes
 351     */
 352    scene_init( &world.geo );
 353
 354    u32 mat_surf = 0,
 355        mat_surf_oob = 0,
 356        mat_vertex_blend = 0,
 357        mat_alphatest = 0,
 358        mat_graffiti = 0,
 359        mat_subworld = 0;
 360
 361    for( int i=1; i<mworld->material_count; i++ )
 362    {
 363       mdl_material *mat = mdl_material_from_id( mworld, i );
 364       const char *mat_name = mdl_pstr( mworld, mat->pstr_name );
 365
 366       if( !strcmp( "surf", mat_name ))
 367          mat_surf = i;
 368       else if( !strcmp( "surf_oob", mat_name ))
 369          mat_surf_oob = i;
 370       else if( !strcmp( "vertex_blend", mat_name ))
 371          mat_vertex_blend = i;
 372       else if( !strcmp( "alphatest", mat_name ))
 373          mat_alphatest = i;
 374       else if( !strcmp( "graffitibox", mat_name ))
 375          mat_graffiti = i;
 376       else if( !strcmp( "subworld", mat_name ))
 377          mat_subworld = i;
 378    }
 379
 380    m4x3f midentity;
 381    m4x3_identity( midentity );
 382
 383    if( mat_surf_oob )
 384       add_all_if_material( midentity, &world.geo, mworld, mat_surf_oob );
 385    else
 386       vg_warn( "No OOB surface\n" );
 387    scene_copy_slice( &world.geo, &world.sm_geo_std_oob );
 388
 389    if( mat_surf )
 390       add_all_if_material( midentity, &world.geo, mworld, mat_surf );
 391    scene_copy_slice( &world.geo, &world.sm_geo_std );
 392
 393    if( mat_subworld )
 394       add_all_if_material( midentity, &world.geo, mworld, mat_subworld );
 395    scene_copy_slice( &world.geo, &world.sm_subworld );
 396
 397    if( mat_vertex_blend )
 398       add_all_if_material( midentity, &world.geo, mworld, mat_vertex_blend );
 399    scene_copy_slice( &world.geo, &world.sm_geo_vb );
 400
 401    scene_upload( &world.geo );
 402    scene_bh_create( &world.geo );
 403
 404
 405    /* Foliage /nocollide layer.
 406     * TODO: Probably should have material traits for this
 407     */
 408    scene_init( &world.foliage );
 409
 410    world_apply_procedural_foliage();
 411    scene_copy_slice( &world.foliage, &world.sm_foliage_main );
 412
 413    add_all_if_material( midentity, &world.foliage, mworld, mat_alphatest );
 414    scene_copy_slice( &world.foliage, &world.sm_foliage_alphatest );
 415
 416    add_all_if_material( midentity, &world.foliage, mworld, mat_graffiti );
 417    scene_copy_slice( &world.foliage, &world.sm_graffiti );
 418
 419    scene_upload( &world.foliage );
 420    world_routes_loadfrom( mworld );
 421
 422    for( int i=0; i<world.instance_cache_count; i++ )
 423       free( world.instance_cache[i].mdl );
 424
 425    free( world.instance_cache );
 426    free( mworld );
 427
 428    /*
 429     * Rendering the depth map
 430     */
 431    m4x4f ortho;
 432    m4x3f camera;
 433
 434    v3f extent;
 435    v3_sub( world.geo.bbx[1], world.geo.bbx[0], extent );
 436
 437    float fl = world.geo.bbx[0][0],
 438          fr = world.geo.bbx[1][0],
 439          fb = world.geo.bbx[0][2],
 440          ft = world.geo.bbx[1][2],
 441          rl = 1.0f / (fr-fl),
 442          tb = 1.0f / (ft-fb);
 443
 444    m4x4_zero( ortho );
 445         ortho[0][0] = 2.0f * rl;
 446         ortho[2][1] = 2.0f * tb;
 447    ortho[3][0] = (fr + fl) * -rl;
 448    ortho[3][1] = (ft + fb) * -tb;
 449    ortho[3][3] = 1.0f;
 450    m4x3_identity( camera );
 451
 452    glViewport( 0, 0, 1024, 1024 );
 453    glDisable(GL_DEPTH_TEST);
 454    glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
 455    shader_fscolour_use();
 456    shader_fscolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 457    render_fsquad();
 458
 459    glEnable(GL_BLEND);
 460    glBlendFunc(GL_ONE, GL_ONE);
 461    glBlendEquation(GL_MAX);
 462    render_world_depth( ortho, camera );
 463    glDisable(GL_BLEND);
 464    glEnable(GL_DEPTH_TEST);
 465
 466    /*
 467     * TODO: World settings entity
 468     */
 469    struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 470    v4_copy( wrender.plane, winfo->g_water_plane );
 471
 472    v4f bounds;
 473    bounds[0] = world.geo.bbx[0][0];
 474    bounds[1] = world.geo.bbx[0][2];
 475    bounds[2] = 1.0f/ (world.geo.bbx[1][0]-world.geo.bbx[0][0]);
 476    bounds[3] = 1.0f/ (world.geo.bbx[1][2]-world.geo.bbx[0][2]);
 477    v4_copy( bounds, winfo->g_depth_bounds );
 478
 479    winfo->g_water_fog = 0.04f;
 480    render_update_lighting_ub();
 481
 482
 483    world.mr_ball.type = k_rb_shape_sphere;
 484    world.mr_ball.inf.sphere.radius = 2.0f;
 485    v3_copy( (v3f){ 0.0f, 110.0f, 0.0f }, world.mr_ball.co );
 486
 487    q_identity(world.mr_ball.q);
 488    rb_init( &world.mr_ball );
 489
 490    /*
 491     * Setup scene collider
 492     */
 493    v3_zero( world.rb_geo.co );
 494    q_identity( world.rb_geo.q );
 495
 496    world.rb_geo.type = k_rb_shape_scene;
 497    world.rb_geo.inf.scene.pscene = &world.geo;
 498    world.rb_geo.is_world = 1;
 499    rb_init( &world.rb_geo );
 500 }
 501
 502 static void world_init(void)
 503 {
 504    vg_tex2d_init( (vg_tex2d *[]){ &tex_terrain_colours,
 505                                   &tex_terrain_noise,
 506                                   &tex_alphatest,
 507                                   &tex_graffiti }, 4 );
 508
 509    mdl_header *mcars = mdl_load( "models/rs_cars.mdl" );
 510    mdl_unpack_glmesh( mcars, &world.cars );
 511    mdl_node *nholden = mdl_node_from_name( mcars, "holden" );
 512    world.car_holden = *mdl_node_submesh( mcars, nholden, 0 );
 513    free(mcars);
 514
 515
 516    mdl_header *msky = mdl_load("models/rs_skydome.mdl");
 517    mdl_unpack_glmesh( msky, &world.skydome );
 518
 519    mdl_node *nlower = mdl_node_from_name( msky, "dome_lower" ),
 520             *nupper = mdl_node_from_name( msky, "dome_upper" );
 521
 522    world.dome_lower = *mdl_node_submesh( msky, nlower, 0 );
 523    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 524    free(msky);
 525
 526
 527    /* Other systems */
 528    world_sfd_init();
 529 }
 530
 531 static void world_update(void)
 532 {
 533    world_routes_update();
 534    world_routes_debug();
 535    sfd_update( &world.sfd.tester );
 536
 537 #if 0
 538    rb_solver_reset();
 539    rb_build_manifold_terrain_sphere( &world.mr_ball );
 540
 541    for( int i=0; i<5; i++ )
 542       rb_solve_contacts( rb_contact_buffer, rb_contact_count );
 543
 544    rb_iter( &world.mr_ball );
 545    rb_update_transform( &world.mr_ball );
 546    rb_debug( &world.mr_ball, 0 );
 547
 548    for( int i=0; i<vg_list_size(world.van_man); i++ )
 549    {
 550       traffic_drive( &world.van_man[i] );
 551       traffic_visualize_car( &world.van_man[i] );
 552    }
 553 #endif
 554 }
 555
 556 /*
 557  * Rendering
 558  */
 559
 560 static void bind_terrain_textures(void)
 561 {
 562    vg_tex2d_bind( &tex_terrain_noise, 0 );
 563    vg_tex2d_bind( &tex_terrain_colours, 1 );
 564 }
 565
 566 static void render_world_vb( m4x4f projection, v3f camera )
 567 {
 568    m4x3f identity_matrix;
 569    m4x3_identity( identity_matrix );
 570
 571    shader_vblend_use();
 572    shader_vblend_uTexGarbage(0);
 573    shader_vblend_uTexGradients(1);
 574    shader_link_standard_ub( _shader_vblend.id, 2 );
 575    bind_terrain_textures();
 576
 577    shader_vblend_uPv( projection );
 578    shader_vblend_uMdl( identity_matrix );
 579    shader_vblend_uCamera( camera );
 580
 581    scene_bind( &world.geo );
 582    mdl_draw_submesh( &world.sm_geo_vb );
 583
 584    mesh_bind( &world.cars );
 585
 586 #if 0
 587    for( int i=0; i<vg_list_size(world.van_man); i++ )
 588    {
 589       shader_vblend_uMdl( world.van_man[i].transform );
 590       mdl_draw_submesh( &world.car_holden );
 591    }
 592 #endif
 593 }
 594
 595 static void render_world_alphatest( m4x4f projection, v3f camera )
 596 {
 597    m4x3f identity_matrix;
 598    m4x3_identity( identity_matrix );
 599
 600    shader_alphatest_use();
 601    shader_alphatest_uTexGarbage(0);
 602    shader_alphatest_uTexMain(1);
 603    shader_link_standard_ub( _shader_alphatest.id, 2 );
 604
 605    vg_tex2d_bind( &tex_terrain_noise, 0 );
 606    vg_tex2d_bind( &tex_alphatest, 1 );
 607
 608    shader_alphatest_uPv( projection );
 609    shader_alphatest_uMdl( identity_matrix );
 610    shader_alphatest_uCamera( camera );
 611
 612    glDisable(GL_CULL_FACE);
 613    scene_bind( &world.foliage );
 614    mdl_draw_submesh( &world.sm_foliage_alphatest );
 615
 616    vg_tex2d_bind( &tex_graffiti, 1 );
 617    mdl_draw_submesh( &world.sm_graffiti );
 618
 619    glEnable(GL_CULL_FACE);
 620 }
 621
 622 static void render_terrain( m4x4f projection, v3f camera )
 623 {
 624    m4x3f identity_matrix;
 625    m4x3_identity( identity_matrix );
 626
 627    shader_terrain_use();
 628    shader_terrain_uTexGarbage(0);
 629    shader_terrain_uTexGradients(1);
 630    shader_link_standard_ub( _shader_terrain.id, 2 );
 631    bind_terrain_textures();
 632
 633    shader_terrain_uPv( projection );
 634    shader_terrain_uMdl( identity_matrix );
 635    shader_terrain_uCamera( camera );
 636
 637    scene_bind( &world.geo );
 638    mdl_draw_submesh( &world.sm_geo_std_oob );
 639    mdl_draw_submesh( &world.sm_geo_std );
 640    mdl_draw_submesh( &world.sm_subworld );
 641
 642    /* TODO: Dont draw in reflection */
 643    glDisable(GL_CULL_FACE);
 644    scene_bind( &world.foliage );
 645    mdl_draw_submesh( &world.sm_foliage_main );
 646    glEnable(GL_CULL_FACE);
 647 }
 648
 649 static void render_lowerdome( m4x3f camera )
 650 {
 651    m4x4f projection, full;
 652    pipeline_projection( projection, 0.4f, 1000.0f );
 653
 654    m4x3f inverse;
 655    m3x3_transpose( camera, inverse );
 656    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 657    m4x3_expand( inverse, full );
 658    m4x4_mul( projection, full, full );
 659
 660    m4x3f identity_matrix;
 661    m4x3_identity( identity_matrix );
 662
 663    shader_planeinf_use();
 664    shader_planeinf_uMdl(identity_matrix);
 665    shader_planeinf_uPv(full);
 666    shader_planeinf_uCamera(camera[3]);
 667    shader_planeinf_uPlane( (v4f){0.0f,1.0f,0.0f, water_height()} );
 668
 669    mdl_draw_submesh( &world.dome_lower );
 670 }
 671
 672 static void render_sky(m4x3f camera)
 673 {
 674    m4x4f projection, full;
 675    pipeline_projection( projection, 0.4f, 1000.0f );
 676
 677    m4x3f inverse;
 678    m3x3_transpose( camera, inverse );
 679    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 680    m4x3_expand( inverse, full );
 681    m4x4_mul( projection, full, full );
 682
 683    m4x3f identity_matrix;
 684    m4x3_identity( identity_matrix );
 685
 686    shader_sky_use();
 687    shader_sky_uMdl(identity_matrix);
 688    shader_sky_uPv(full);
 689    shader_sky_uTexGarbage(0);
 690    shader_sky_uTime( vg_time );
 691
 692    vg_tex2d_bind( &tex_terrain_noise, 0 );
 693
 694    glDepthMask( GL_FALSE );
 695    glDisable( GL_DEPTH_TEST );
 696
 697    mesh_bind( &world.skydome );
 698    mdl_draw_submesh( &world.dome_upper );
 699
 700    glEnable( GL_DEPTH_TEST );
 701    glDepthMask( GL_TRUE );
 702 }
 703
 704 static void render_world_gates( m4x4f projection, m4x3f camera )
 705 {
 706    float closest = INFINITY;
 707    int   id = 0;
 708
 709    for( int i=0; i<world.routes.gate_count; i++ )
 710    {
 711       struct route_gate *rg = &world.routes.gates[i];
 712       float dist = v3_dist2( rg->gate.co[0], camera[3] );
 713
 714       if( dist < closest )
 715       {
 716          closest = dist;
 717          id = i;
 718       }
 719    }
 720
 721    render_gate( &world.routes.gates[id].gate, camera );
 722 }
 723
 724 static void render_world( m4x4f projection, m4x3f camera )
 725 {
 726    render_sky( camera );
 727    render_world_routes( projection, camera[3] );
 728    render_world_vb( projection, camera[3] );
 729    render_world_alphatest( projection, camera[3] );
 730    render_terrain( projection, camera[3] );
 731
 732    m4x3f identity_matrix;
 733    m4x3_identity( identity_matrix );
 734    identity_matrix[3][1] = 125.0f;
 735
 736    v4f t;
 737    q_axis_angle( t, (v3f){0.0f,1.0f,0.0f}, 2.3f );
 738    q_m3x3( t, identity_matrix );
 739
 740    sfd_render( &world.sfd.tester, projection, camera[3], identity_matrix );
 741 }
 742
 743 static void render_world_depth( m4x4f projection, m4x3f camera )
 744 {
 745    m4x3f identity_matrix;
 746    m4x3_identity( identity_matrix );
 747
 748    shader_gpos_use();
 749    shader_gpos_uCamera( camera[3] );
 750    shader_gpos_uPv( projection );
 751    shader_gpos_uMdl( identity_matrix );
 752
 753    scene_bind( &world.geo );
 754    scene_draw( &world.geo );
 755
 756 #if 0
 757    glDisable(GL_CULL_FACE);
 758    scene_bind( &world.foliage );
 759    scene_draw( &world.foliage );
 760    glEnable(GL_CULL_FACE);
 761 #endif
 762 }
 763
 764 #endif /* WORLD_H */