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