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 #include "world_audio.h"
  22
  23 #include "shaders/terrain.h"
  24 #include "shaders/sky.h"
  25 #include "shaders/planeinf.h"
  26 #include "shaders/standard.h"
  27 #include "shaders/vblend.h"
  28 #include "shaders/gpos.h"
  29 #include "shaders/fscolour.h"
  30 #include "shaders/alphatest.h"
  31
  32 static struct gworld
  33 {
  34    /* gameplay */
  35    struct respawn_point
  36    {
  37       v3f co;
  38       v4f q;
  39       char name[32];
  40    }
  41    spawns[32];
  42    u32 spawn_count;
  43
  44    struct subworld_routes routes;
  45    struct subworld_sfd sfd;
  46
  47    /* ...
  48    struct subworld_spawns system_spawns;
  49    struct subworld_physics system_physics;
  50    */
  51
  52    /* Paths */
  53    traffic_node traffic[128];
  54    u32 traffic_count;
  55
  56 #if 0
  57    traffic_driver van_man[6];
  58 #endif
  59
  60    /* Physics */
  61
  62    /* Rendering & geometry */
  63    scene geo, foliage;
  64    rigidbody rb_geo;
  65
  66    /* TODO Maybe make this less hardcoded */
  67    mdl_submesh sm_geo_std_oob, sm_geo_std, sm_geo_vb,
  68                sm_foliage_main, sm_foliage_alphatest,
  69                sm_graffiti, sm_subworld, sm_terrain;
  70
  71    glmesh skybox, skydome;
  72    mdl_submesh dome_upper, dome_lower;
  73
  74    glmesh cars;
  75    mdl_submesh car_holden;
  76
  77    rigidbody mr_ball;
  78
  79    /* Load time */
  80
  81    struct instance_cache
  82    {
  83       mdl_header *mdl;
  84       u32 pstr_file;
  85    }
  86    * instance_cache;
  87    u32 instance_cache_count,
  88        instance_cache_cap;
  89
  90    v3f render_gate_pos;
  91    int active_route_board;
  92 }
  93 world;
  94
  95 static struct subworld_routes *subworld_routes(void) { return &world.routes; }
  96 static struct subworld_sfd *subworld_sfd(void) { return &world.sfd; }
  97
  98
  99 vg_tex2d tex_terrain_colours = { .path = "textures/gradients.qoi",
 100                                  .flags = VG_TEXTURE_CLAMP|VG_TEXTURE_NEAREST };
 101
 102 vg_tex2d tex_terrain_noise = { .path = "textures/garbage.qoi",
 103                                  .flags = VG_TEXTURE_NEAREST };
 104
 105 vg_tex2d tex_alphatest = { .path = "textures/alphatest.qoi",
 106                                  .flags = VG_TEXTURE_NEAREST };
 107
 108 vg_tex2d tex_graffiti = { .path = "textures/graffitibox.qoi",
 109                                  .flags = VG_TEXTURE_NEAREST };
 110
 111 static void ray_world_get_tri( ray_hit *hit, v3f tri[3] )
 112 {
 113    for( int i=0; i<3; i++ )
 114       v3_copy( world.geo.verts[ hit->tri[i] ].co, tri[i] );
 115 }
 116
 117 static int ray_world( v3f pos, v3f dir, ray_hit *hit )
 118 {
 119    return scene_raycast( &world.geo, pos, dir, hit );
 120 }
 121
 122 static int ray_hit_is_terrain( ray_hit *hit )
 123 {
 124    u32 valid_start = 0,
 125        valid_end   = world.sm_terrain.vertex_count;
 126
 127    return (hit->tri[0] >= valid_start) &&
 128           (hit->tri[0]  < valid_end);
 129 }
 130
 131 static int ray_hit_is_ramp( ray_hit *hit )
 132 {
 133    u32 valid_start = world.sm_geo_std.vertex_start,
 134        valid_end   = world.sm_geo_vb.vertex_start;
 135
 136    return (hit->tri[0] >= valid_start) &&
 137           (hit->tri[0]  < valid_end);
 138 }
 139
 140 static void world_register(void)
 141 {
 142    shader_terrain_register();
 143    shader_sky_register();
 144    shader_planeinf_register();
 145    shader_gpos_register();
 146    shader_fscolour_register();
 147    shader_alphatest_register();
 148
 149    world_routes_register();
 150    world_sfd_register();
 151 }
 152
 153 static void world_free(void)
 154 {
 155    /* TODO.. */
 156
 157    world_sfd_free();
 158 }
 159
 160 static void render_world_depth( m4x4f projection, m4x3f camera );
 161
 162 static void add_all_if_material( m4x3f transform, scene *pscene,
 163                                  mdl_header *mdl, u32 id )
 164 {
 165    for( int i=0; i<mdl->node_count; i++ )
 166    {
 167       mdl_node *pnode = mdl_node_from_id( mdl, i );
 168
 169       for( int j=0; j<pnode->submesh_count; j++ )
 170       {
 171          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
 172
 173          if( sm->material_id == id )
 174          {
 175             m4x3f transform2;
 176             mdl_node_transform( pnode, transform2 );
 177             m4x3_mul( transform, transform2, transform2 );
 178
 179             scene_add_submesh( pscene, mdl, sm, transform2 );
 180          }
 181       }
 182
 183       if( pnode->classtype == k_classtype_instance )
 184       {
 185          if( pnode->sub_uid )
 186          {
 187             u32 instance_id = pnode->sub_uid -1;
 188             struct instance_cache *cache = &world.instance_cache[instance_id];
 189             mdl_header *mdl2 = cache->mdl;
 190
 191             m4x3f transform2;
 192             mdl_node_transform( pnode, transform2 );
 193             m4x3_mul( transform, transform2, transform2 );
 194
 195             add_all_if_material( transform2, pscene, mdl2, id );
 196          }
 197       }
 198    }
 199 }
 200
 201 static void world_apply_procedural_foliage(void)
 202 {
 203    mdl_header *mfoliage = mdl_load("models/rs_foliage.mdl");
 204
 205    v3f volume;
 206    v3_sub( world.geo.bbx[1], world.geo.bbx[0], volume );
 207    volume[1] = 1.0f;
 208
 209    m4x3f transform;
 210    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
 211    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
 212
 213    for( int i=0;i<100000;i++ )
 214    {
 215       v3f pos;
 216       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 217       pos[1] = 1000.0f;
 218       v3_add( pos, world.geo.bbx[0], pos );
 219
 220       ray_hit hit;
 221       hit.dist = INFINITY;
 222
 223       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 224       {
 225          if( (hit.normal[1] > 0.8f) && ray_hit_is_terrain(&hit) &&
 226              (hit.pos[1] > water_height()+10.0f) )
 227          {
 228             v4f qsurface, qrandom;
 229             v3f axis;
 230
 231             v3_cross( (v3f){0.0f,1.0f,0.0f}, hit.normal, axis );
 232
 233             float angle = v3_dot(hit.normal,(v3f){0.0f,1.0f,0.0f});
 234             q_axis_angle( qsurface, axis, angle );
 235             q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
 236             q_mul( qsurface, qrandom, qsurface );
 237             q_m3x3( qsurface, transform );
 238
 239             v3_copy( hit.pos, transform[3] );
 240             scene_add_submesh( &world.foliage, mfoliage, sm_blob, transform);
 241          }
 242       }
 243    }
 244    free( mfoliage );
 245 }
 246
 247 static void world_load(void)
 248 {
 249    mdl_header *mworld = mdl_load( "models/mp_dev.mdl" );
 250
 251    world.spawn_count = 0;
 252    world.traffic_count = 0;
 253    world.instance_cache = NULL;
 254
 255    /*
 256     * Process entities
 257     */
 258    for( int i=0; i<mworld->node_count; i++ )
 259    {
 260       mdl_node *pnode = mdl_node_from_id( mworld, i );
 261
 262       if( pnode->classtype == k_classtype_none )
 263       {}
 264       else if( pnode->classtype == k_classtype_spawn )
 265       {
 266          struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 267
 268          v3_copy( pnode->co, rp->co );
 269          v4_copy( pnode->q, rp->q );
 270          strcpy( rp->name, mdl_pstr( mworld, pnode->pstr_name ) );
 271       }
 272       else if( pnode->classtype == k_classtype_water )
 273       {
 274          if( wrender.enabled )
 275          {
 276             vg_warn( "Multiple water surfaces in level! ('%s')\n",
 277                   mdl_pstr( mworld, pnode->pstr_name ));
 278             continue;
 279          }
 280
 281          mdl_submesh *sm = mdl_node_submesh( mworld, pnode, 0 );
 282
 283          if( sm )
 284          {
 285             glmesh surf;
 286             mdl_unpack_submesh( mworld, &surf, sm );
 287             water_init();
 288             water_set_surface( &surf, pnode->co[1] );
 289          }
 290       }
 291       else if( pnode->classtype == k_classtype_car_path )
 292       {
 293          struct classtype_car_path *p = mdl_get_entdata( mworld, pnode );
 294          traffic_node *tn = &world.traffic[ world.traffic_count ];
 295          tn->mn_next = NULL;
 296          tn->mn_next1 = NULL;
 297
 298          if( p->target ) tn->mn_next = mdl_node_from_id( mworld, p->target );
 299          if( p->target1 ) tn->mn_next1 = mdl_node_from_id( mworld, p->target1 );
 300
 301          m4x3f transform;
 302          mdl_node_transform( pnode, transform );
 303          m3x3_mulv( transform, (v3f){1.0f,0.0f,0.0f}, tn->h );
 304          v3_copy( transform[3], tn->co );
 305
 306          pnode->sub_uid = world.traffic_count ++;
 307       }
 308       else if( pnode->classtype == k_classtype_instance )
 309       {
 310          struct classtype_instance *inst = mdl_get_entdata( mworld, pnode );
 311          pnode->sub_uid = 0;
 312
 313          int cached = 0;
 314          for( int i=0; i<world.instance_cache_count; i++ )
 315          {
 316             struct instance_cache *cache = &world.instance_cache[i];
 317             if( inst->pstr_file == cache->pstr_file )
 318             {
 319                cached = 1;
 320                pnode->sub_uid = i+1;
 321                break;
 322             }
 323          }
 324
 325          if( !cached )
 326          {
 327             world.instance_cache = buffer_reserve(
 328                             world.instance_cache, world.instance_cache_count,
 329                             &world.instance_cache_cap, 1,
 330                             sizeof(struct instance_cache) );
 331
 332             struct instance_cache *cache =
 333                &world.instance_cache[world.instance_cache_count];
 334
 335             const char *filename = mdl_pstr(mworld, inst->pstr_file);
 336
 337             cache->pstr_file = inst->pstr_file;
 338             cache->mdl = mdl_load( filename );
 339
 340             if( cache->mdl )
 341             {
 342                world.instance_cache_count ++;
 343                pnode->sub_uid = world.instance_cache_count;
 344                mdl_link_materials( mworld, cache->mdl );
 345                vg_success( "Cached %s\n", filename );
 346             }
 347             else
 348             {
 349                vg_warn( "Failed to cache %s\n", filename );
 350             }
 351          }
 352       }
 353    }
 354
 355    world.instance_cache = buffer_fix( world.instance_cache,
 356                                       world.instance_cache_count,
 357                                      &world.instance_cache_cap,
 358                                      sizeof( struct instance_cache ) );
 359
 360 #if 0
 361    traffic_finalize( world.traffic, world.traffic_count );
 362    for( int i=0; i<vg_list_size(world.van_man); i++ )
 363       world.van_man[i].current =&world.traffic[vg_randint(world.traffic_count)];
 364 #endif
 365
 366    /*
 367     * Compile meshes into the world scenes
 368     */
 369    scene_init( &world.geo );
 370
 371    u32 mat_surf = 0,
 372        mat_surf_oob = 0,
 373        mat_vertex_blend = 0,
 374        mat_alphatest = 0,
 375        mat_graffiti = 0,
 376        mat_subworld = 0,
 377        mat_terrain = 0;
 378
 379    for( int i=1; i<mworld->material_count; i++ )
 380    {
 381       mdl_material *mat = mdl_material_from_id( mworld, i );
 382       const char *mat_name = mdl_pstr( mworld, mat->pstr_name );
 383
 384       if( !strcmp( "surf", mat_name ))
 385          mat_surf = i;
 386       else if( !strcmp( "surf_oob", mat_name ))
 387          mat_surf_oob = i;
 388       else if( !strcmp( "vertex_blend", mat_name ))
 389          mat_vertex_blend = i;
 390       else if( !strcmp( "alphatest", mat_name ))
 391          mat_alphatest = i;
 392       else if( !strcmp( "graffitibox", mat_name ))
 393          mat_graffiti = i;
 394       else if( !strcmp( "terrain", mat_name ) )
 395          mat_terrain = i;
 396    }
 397
 398    m4x3f midentity;
 399    m4x3_identity( midentity );
 400
 401    if( mat_terrain )
 402       add_all_if_material( midentity, &world.geo, mworld, mat_terrain );
 403    scene_copy_slice( &world.geo, &world.sm_terrain );
 404
 405    if( mat_surf_oob )
 406       add_all_if_material( midentity, &world.geo, mworld, mat_surf_oob );
 407    else
 408       vg_warn( "No OOB surface\n" );
 409    scene_copy_slice( &world.geo, &world.sm_geo_std_oob );
 410
 411    if( mat_surf )
 412       add_all_if_material( midentity, &world.geo, mworld, mat_surf );
 413    scene_copy_slice( &world.geo, &world.sm_geo_std );
 414
 415    if( mat_vertex_blend )
 416       add_all_if_material( midentity, &world.geo, mworld, mat_vertex_blend );
 417    scene_copy_slice( &world.geo, &world.sm_geo_vb );
 418
 419    scene_upload( &world.geo );
 420    scene_bh_create( &world.geo );
 421
 422
 423    /* Foliage /nocollide layer.
 424     * TODO: Probably should have material traits for this
 425     */
 426    scene_init( &world.foliage );
 427
 428    world_apply_procedural_foliage();
 429    scene_copy_slice( &world.foliage, &world.sm_foliage_main );
 430
 431    add_all_if_material( midentity, &world.foliage, mworld, mat_alphatest );
 432    scene_copy_slice( &world.foliage, &world.sm_foliage_alphatest );
 433
 434    add_all_if_material( midentity, &world.foliage, mworld, mat_graffiti );
 435    scene_copy_slice( &world.foliage, &world.sm_graffiti );
 436
 437    scene_upload( &world.foliage );
 438    world_routes_loadfrom( mworld );
 439
 440    for( int i=0; i<world.instance_cache_count; i++ )
 441       free( world.instance_cache[i].mdl );
 442
 443    free( world.instance_cache );
 444    free( mworld );
 445
 446    /*
 447     * Rendering the depth map
 448     */
 449    m4x4f ortho;
 450    m4x3f camera;
 451
 452    v3f extent;
 453    v3_sub( world.geo.bbx[1], world.geo.bbx[0], extent );
 454
 455    float fl = world.geo.bbx[0][0],
 456          fr = world.geo.bbx[1][0],
 457          fb = world.geo.bbx[0][2],
 458          ft = world.geo.bbx[1][2],
 459          rl = 1.0f / (fr-fl),
 460          tb = 1.0f / (ft-fb);
 461
 462    m4x4_zero( ortho );
 463         ortho[0][0] = 2.0f * rl;
 464         ortho[2][1] = 2.0f * tb;
 465    ortho[3][0] = (fr + fl) * -rl;
 466    ortho[3][1] = (ft + fb) * -tb;
 467    ortho[3][3] = 1.0f;
 468    m4x3_identity( camera );
 469
 470    glViewport( 0, 0, 1024, 1024 );
 471    glDisable(GL_DEPTH_TEST);
 472    glBindFramebuffer( GL_FRAMEBUFFER, gpipeline.fb_depthmap );
 473    shader_fscolour_use();
 474    shader_fscolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 475    render_fsquad();
 476
 477    glEnable(GL_BLEND);
 478    glBlendFunc(GL_ONE, GL_ONE);
 479    glBlendEquation(GL_MAX);
 480    render_world_depth( ortho, camera );
 481    glDisable(GL_BLEND);
 482    glEnable(GL_DEPTH_TEST);
 483
 484    /*
 485     * TODO: World settings entity
 486     */
 487    struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 488    v4_copy( wrender.plane, winfo->g_water_plane );
 489
 490    v4f bounds;
 491    bounds[0] = world.geo.bbx[0][0];
 492    bounds[1] = world.geo.bbx[0][2];
 493    bounds[2] = 1.0f/ (world.geo.bbx[1][0]-world.geo.bbx[0][0]);
 494    bounds[3] = 1.0f/ (world.geo.bbx[1][2]-world.geo.bbx[0][2]);
 495    v4_copy( bounds, winfo->g_depth_bounds );
 496
 497    winfo->g_water_fog = 0.04f;
 498    render_update_lighting_ub();
 499
 500
 501    world.mr_ball.type = k_rb_shape_sphere;
 502    world.mr_ball.inf.sphere.radius = 2.0f;
 503    v3_copy( (v3f){ 0.0f, 110.0f, 0.0f }, world.mr_ball.co );
 504
 505    q_identity(world.mr_ball.q);
 506    rb_init( &world.mr_ball );
 507
 508    /*
 509     * Setup scene collider
 510     */
 511    v3_zero( world.rb_geo.co );
 512    q_identity( world.rb_geo.q );
 513
 514    world.rb_geo.type = k_rb_shape_scene;
 515    world.rb_geo.inf.scene.pscene = &world.geo;
 516    world.rb_geo.is_world = 1;
 517    rb_init( &world.rb_geo );
 518 }
 519
 520 static void world_init(void)
 521 {
 522    vg_tex2d_init( (vg_tex2d *[]){ &tex_terrain_colours,
 523                                   &tex_terrain_noise,
 524                                   &tex_alphatest,
 525                                   &tex_graffiti }, 4 );
 526
 527    mdl_header *mcars = mdl_load( "models/rs_cars.mdl" );
 528    mdl_unpack_glmesh( mcars, &world.cars );
 529    mdl_node *nholden = mdl_node_from_name( mcars, "holden" );
 530    world.car_holden = *mdl_node_submesh( mcars, nholden, 0 );
 531    free(mcars);
 532
 533
 534    mdl_header *msky = mdl_load("models/rs_skydome.mdl");
 535    mdl_unpack_glmesh( msky, &world.skydome );
 536
 537    mdl_node *nlower = mdl_node_from_name( msky, "dome_lower" ),
 538             *nupper = mdl_node_from_name( msky, "dome_upper" );
 539
 540    world.dome_lower = *mdl_node_submesh( msky, nlower, 0 );
 541    world.dome_upper = *mdl_node_submesh( msky, nupper, 0 );
 542    free(msky);
 543
 544
 545    /* Other systems */
 546    world_sfd_init();
 547    world_audio_init();
 548 }
 549
 550 static void world_update(void)
 551 {
 552    world_routes_update();
 553    world_routes_debug();
 554
 555
 556    sfd_update( &world.sfd.tester );
 557
 558 #if 0
 559    rb_solver_reset();
 560    rb_build_manifold_terrain_sphere( &world.mr_ball );
 561
 562    for( int i=0; i<5; i++ )
 563       rb_solve_contacts( rb_contact_buffer, rb_contact_count );
 564
 565    rb_iter( &world.mr_ball );
 566    rb_update_transform( &world.mr_ball );
 567    rb_debug( &world.mr_ball, 0 );
 568
 569    for( int i=0; i<vg_list_size(world.van_man); i++ )
 570    {
 571       traffic_drive( &world.van_man[i] );
 572       traffic_visualize_car( &world.van_man[i] );
 573    }
 574 #endif
 575 }
 576
 577 /*
 578  * Rendering
 579  */
 580
 581 static void bind_terrain_textures(void)
 582 {
 583    vg_tex2d_bind( &tex_terrain_noise, 0 );
 584    vg_tex2d_bind( &tex_terrain_colours, 1 );
 585 }
 586
 587 static void render_world_vb( m4x4f projection, v3f camera )
 588 {
 589    m4x3f identity_matrix;
 590    m4x3_identity( identity_matrix );
 591
 592    shader_vblend_use();
 593    shader_vblend_uTexGarbage(0);
 594    shader_vblend_uTexGradients(1);
 595    shader_link_standard_ub( _shader_vblend.id, 2 );
 596    bind_terrain_textures();
 597
 598    shader_vblend_uPv( projection );
 599    shader_vblend_uMdl( identity_matrix );
 600    shader_vblend_uCamera( camera );
 601
 602    scene_bind( &world.geo );
 603    mdl_draw_submesh( &world.sm_geo_vb );
 604
 605    mesh_bind( &world.cars );
 606
 607 #if 0
 608    for( int i=0; i<vg_list_size(world.van_man); i++ )
 609    {
 610       shader_vblend_uMdl( world.van_man[i].transform );
 611       mdl_draw_submesh( &world.car_holden );
 612    }
 613 #endif
 614 }
 615
 616 static void render_world_alphatest( m4x4f projection, v3f camera )
 617 {
 618    m4x3f identity_matrix;
 619    m4x3_identity( identity_matrix );
 620
 621    shader_alphatest_use();
 622    shader_alphatest_uTexGarbage(0);
 623    shader_alphatest_uTexMain(1);
 624    shader_link_standard_ub( _shader_alphatest.id, 2 );
 625
 626    vg_tex2d_bind( &tex_terrain_noise, 0 );
 627    vg_tex2d_bind( &tex_alphatest, 1 );
 628
 629    shader_alphatest_uPv( projection );
 630    shader_alphatest_uMdl( identity_matrix );
 631    shader_alphatest_uCamera( camera );
 632
 633    glDisable(GL_CULL_FACE);
 634    scene_bind( &world.foliage );
 635    mdl_draw_submesh( &world.sm_foliage_alphatest );
 636
 637    vg_tex2d_bind( &tex_graffiti, 1 );
 638    mdl_draw_submesh( &world.sm_graffiti );
 639
 640    glEnable(GL_CULL_FACE);
 641 }
 642
 643 static void render_terrain( m4x4f projection, v3f camera )
 644 {
 645    m4x3f identity_matrix;
 646    m4x3_identity( identity_matrix );
 647
 648    shader_terrain_use();
 649    shader_terrain_uTexGarbage(0);
 650    shader_terrain_uTexGradients(1);
 651    shader_link_standard_ub( _shader_terrain.id, 2 );
 652    bind_terrain_textures();
 653
 654    shader_terrain_uPv( projection );
 655    shader_terrain_uMdl( identity_matrix );
 656    shader_terrain_uCamera( camera );
 657
 658    scene_bind( &world.geo );
 659    mdl_draw_submesh( &world.sm_terrain );
 660    mdl_draw_submesh( &world.sm_geo_std_oob );
 661    mdl_draw_submesh( &world.sm_geo_std );
 662    mdl_draw_submesh( &world.sm_subworld );
 663
 664    /* TODO: Dont draw in reflection */
 665    glDisable(GL_CULL_FACE);
 666    scene_bind( &world.foliage );
 667    mdl_draw_submesh( &world.sm_foliage_main );
 668    glEnable(GL_CULL_FACE);
 669 }
 670
 671 static void render_lowerdome( m4x3f camera )
 672 {
 673    m4x4f projection, full;
 674    pipeline_projection( projection, 0.4f, 1000.0f );
 675
 676    m4x3f inverse;
 677    m3x3_transpose( camera, inverse );
 678    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 679    m4x3_expand( inverse, full );
 680    m4x4_mul( projection, full, full );
 681
 682    m4x3f identity_matrix;
 683    m4x3_identity( identity_matrix );
 684
 685    shader_planeinf_use();
 686    shader_planeinf_uMdl(identity_matrix);
 687    shader_planeinf_uPv(full);
 688    shader_planeinf_uCamera(camera[3]);
 689    shader_planeinf_uPlane( (v4f){0.0f,1.0f,0.0f, water_height()} );
 690
 691    mdl_draw_submesh( &world.dome_lower );
 692 }
 693
 694 static void render_sky(m4x3f camera)
 695 {
 696    m4x4f projection, full;
 697    pipeline_projection( projection, 0.4f, 1000.0f );
 698
 699    m4x3f inverse;
 700    m3x3_transpose( camera, inverse );
 701    v3_copy((v3f){0.0f,0.0f,0.0f}, inverse[3]);
 702    m4x3_expand( inverse, full );
 703    m4x4_mul( projection, full, full );
 704
 705    m4x3f identity_matrix;
 706    m4x3_identity( identity_matrix );
 707
 708    shader_sky_use();
 709    shader_sky_uMdl(identity_matrix);
 710    shader_sky_uPv(full);
 711    shader_sky_uTexGarbage(0);
 712    shader_sky_uTime( vg_time );
 713
 714    vg_tex2d_bind( &tex_terrain_noise, 0 );
 715
 716    glDepthMask( GL_FALSE );
 717    glDisable( GL_DEPTH_TEST );
 718
 719    mesh_bind( &world.skydome );
 720    mdl_draw_submesh( &world.dome_upper );
 721
 722    glEnable( GL_DEPTH_TEST );
 723    glDepthMask( GL_TRUE );
 724 }
 725
 726 static void render_world_gates( m4x4f projection, m4x3f camera )
 727 {
 728    float closest = INFINITY;
 729    int   id = 0;
 730
 731    for( int i=0; i<world.routes.gate_count; i++ )
 732    {
 733       struct route_gate *rg = &world.routes.gates[i];
 734       float dist = v3_dist2( rg->gate.co[0], camera[3] );
 735
 736       if( dist < closest )
 737       {
 738          closest = dist;
 739          id = i;
 740       }
 741    }
 742
 743    render_gate( &world.routes.gates[id].gate, camera );
 744    v3_lerp( world.render_gate_pos,
 745             world.routes.gates[id].gate.co[0],
 746             1.0f,
 747             world.render_gate_pos );
 748 }
 749
 750 static void render_world( m4x4f projection, m4x3f camera )
 751 {
 752    render_sky( camera );
 753    render_world_routes( projection, camera[3] );
 754    render_world_vb( projection, camera[3] );
 755    render_world_alphatest( projection, camera[3] );
 756    render_terrain( projection, camera[3] );
 757
 758    int closest = 0;
 759    float min_dist = INFINITY;
 760
 761    for( int i=0; i<world.routes.route_count; i++ )
 762    {
 763       float dist = v3_dist2( world.routes.routes[i].scoreboard_transform[3],
 764                               camera[3] );
 765
 766       if( dist < min_dist )
 767       {
 768          min_dist = dist;
 769          closest = i;
 770       }
 771    }
 772
 773    sfd_render( &world.sfd.tester, projection, camera[3],
 774          world.routes.routes[closest].scoreboard_transform );
 775 }
 776
 777 static void render_world_depth( m4x4f projection, m4x3f camera )
 778 {
 779    m4x3f identity_matrix;
 780    m4x3_identity( identity_matrix );
 781
 782    shader_gpos_use();
 783    shader_gpos_uCamera( camera[3] );
 784    shader_gpos_uPv( projection );
 785    shader_gpos_uMdl( identity_matrix );
 786
 787    scene_bind( &world.geo );
 788    scene_draw( &world.geo );
 789
 790 #if 0
 791    glDisable(GL_CULL_FACE);
 792    scene_bind( &world.foliage );
 793    scene_draw( &world.foliage );
 794    glEnable(GL_CULL_FACE);
 795 #endif
 796 }
 797
 798 #endif /* WORLD_H */