world_render.c

   1 /*
   2  * Copyright (C) 2021-2023 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef WORLD_RENDER_C
   6 #define WORLD_RENDER_C
   7
   8 #include "world.h"
   9 #include "world_render.h"
  10
  11 static int ccmd_set_time( int argc, const char *argv[] ){
  12    if( argc == 1 ){
  13       world_instance *world = world_current_instance();
  14       world->time = atof( argv[0] );
  15    }
  16    else {
  17       vg_error( "Usage set_time <0-1.0>\n" );
  18    }
  19    return 0;
  20 }
  21
  22 VG_STATIC void async_world_render_init( void *payload, u32 size )
  23 {
  24    vg_info( "Allocate uniform buffers\n" );
  25    for( int i=0; i<4; i++ ){
  26       world_instance *world = &world_static.worlds[i];
  27       world->ubo_bind_point = i;
  28
  29       glGenBuffers( 1, &world->ubo_lighting );
  30       glBindBuffer( GL_UNIFORM_BUFFER, world->ubo_lighting );
  31       glBufferData( GL_UNIFORM_BUFFER, sizeof(struct ub_world_lighting),
  32                     NULL, GL_DYNAMIC_DRAW );
  33
  34       glBindBufferBase( GL_UNIFORM_BUFFER, i, world->ubo_lighting );
  35       VG_CHECK_GL_ERR();
  36    }
  37
  38    vg_info( "Allocate frame buffers\n" );
  39    for( int i=0; i<4; i++ ){
  40       world_instance *world = &world_static.worlds[i];
  41       struct framebuffer *fb = &world->heightmap;
  42
  43       fb->display_name = NULL;
  44       fb->link = NULL;
  45       fb->fixed_w = 1024;
  46       fb->fixed_h = 1024;
  47       fb->resolution_div = 0;
  48
  49       fb->attachments[0].display_name     = NULL;
  50       fb->attachments[0].purpose = k_framebuffer_attachment_type_texture;
  51       fb->attachments[0].internalformat   = GL_RG16F;
  52       fb->attachments[0].format           = GL_RG;
  53       fb->attachments[0].type             = GL_FLOAT;
  54       fb->attachments[0].attachment       = GL_COLOR_ATTACHMENT0;
  55
  56       fb->attachments[1].purpose = k_framebuffer_attachment_type_none;
  57       fb->attachments[2].purpose = k_framebuffer_attachment_type_none;
  58       fb->attachments[3].purpose = k_framebuffer_attachment_type_none;
  59       fb->attachments[4].purpose = k_framebuffer_attachment_type_none;
  60
  61       render_fb_allocate( fb );
  62    }
  63 }
  64
  65 VG_STATIC void world_render_init(void)
  66 {
  67    VG_VAR_F32( k_day_length );
  68    VG_VAR_I32( k_debug_light_indices );
  69    VG_VAR_I32( k_debug_light_complexity );
  70    VG_VAR_I32( k_light_preview );
  71    vg_console_reg_cmd( "set_time", ccmd_set_time, NULL );
  72
  73    world_render.sky_rate = 1.0;
  74    world_render.sky_target_rate = 1.0;
  75
  76    shader_scene_standard_register();
  77    shader_scene_standard_alphatest_register();
  78    shader_scene_fxglow_register();
  79    shader_scene_vertex_blend_register();
  80    shader_scene_terrain_register();
  81    shader_scene_depth_register();
  82    shader_scene_position_register();
  83    shader_model_sky_register();
  84
  85    vg_info( "Loading world resources\n" );
  86    vg_linear_clear( vg_mem.scratch );
  87
  88    mdl_context msky;
  89    mdl_open( &msky, "models/rs_skydome.mdl", vg_mem.scratch );
  90    mdl_load_metadata_block( &msky, vg_mem.scratch );
  91    mdl_async_load_glmesh( &msky, &world_render.skydome );
  92    mdl_close( &msky );
  93
  94    vg_info( "Loading default world textures\n" );
  95    vg_tex2d_load_qoi_async_file( "textures/garbage.qoi",
  96                                  VG_TEX2D_NEAREST|VG_TEX2D_REPEAT,
  97                                  &world_render.tex_terrain_noise );
  98
  99    vg_async_call( async_world_render_init, NULL, 0 );
 100 }
 101
 102 VG_STATIC void world_link_lighting_ub( world_instance *world, GLuint shader )
 103 {
 104    GLuint idx = glGetUniformBlockIndex( shader, "ub_world_lighting" );
 105    glUniformBlockBinding( shader, idx, world->ubo_bind_point );
 106 }
 107
 108 VG_STATIC void world_bind_position_texture( world_instance *world,
 109                                             GLuint shader, GLuint location,
 110                                             int slot )
 111 {
 112    render_fb_bind_texture( &world->heightmap, 0, slot );
 113    glUniform1i( location, slot );
 114 }
 115
 116 VG_STATIC void world_bind_light_array( world_instance *world,
 117                                        GLuint shader, GLuint location,
 118                                        int slot )
 119 {
 120    glActiveTexture( GL_TEXTURE0 + slot );
 121    glBindTexture( GL_TEXTURE_BUFFER, world->tex_light_entities );
 122    glUniform1i( location, slot );
 123 }
 124
 125 VG_STATIC void world_bind_light_index( world_instance *world,
 126                                        GLuint shader, GLuint location,
 127                                        int slot )
 128 {
 129    glActiveTexture( GL_TEXTURE0 + slot );
 130    glBindTexture( GL_TEXTURE_3D, world->tex_light_cubes );
 131    glUniform1i( location, slot );
 132 }
 133
 134 VG_STATIC void render_world_depth( world_instance *world, camera *cam );
 135
 136 /*
 137  * Rendering
 138  */
 139
 140 VG_STATIC void bind_terrain_noise(void)
 141 {
 142    glActiveTexture( GL_TEXTURE0 );
 143    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 144 }
 145
 146 struct world_pass{
 147    camera *cam;
 148    enum mdl_shader shader;
 149    enum world_geo_type geo_type;
 150
 151    void (*fn_bind_textures)( world_instance *world,
 152                              struct world_surface *mat );
 153    void (*fn_set_mdl)( m4x3f mdl );
 154    void (*fn_set_uPvmPrev)( m4x4f pvm );
 155 };
 156
 157 VG_STATIC
 158 void world_render_traffic( world_instance *world, u32 material_id,
 159                            struct world_pass *pass ){
 160    if( !mdl_arrcount( &world->ent_traffic ) ) return;
 161
 162    /* HACK: use the first material for every traffic entity */
 163    ent_traffic *first = mdl_arritm( &world->ent_traffic, 0 );
 164    if( !first->submesh_count ) return;
 165
 166    mdl_submesh *sm = mdl_arritm( &world->meta.submeshs, first->submesh_start );
 167    if( sm->material_id != material_id ) return;
 168
 169    struct world_surface *mat = &world->surfaces[ material_id ];
 170    pass->fn_bind_textures( world, mat );
 171
 172    for( u32 j=0; j<mdl_arrcount( &world->ent_traffic ); j++ ){
 173       ent_traffic *traffic = mdl_arritm( &world->ent_traffic, j );
 174
 175       for( u32 k=0; k<traffic->submesh_count; k++ ){
 176          sm = mdl_arritm( &world->meta.submeshs,
 177                            traffic->submesh_start+k );
 178
 179          m4x3f mmdl;
 180          q_m3x3( traffic->transform.q, mmdl );
 181          v3_copy( traffic->transform.co, mmdl[3] );
 182
 183          m4x4f m4mdl;
 184          m4x3_expand( mmdl, m4mdl );
 185          m4x4_mul( pass->cam->mtx_prev.pv, m4mdl, m4mdl );
 186
 187          pass->fn_set_mdl( mmdl );
 188          pass->fn_set_uPvmPrev( m4mdl );
 189
 190          mdl_draw_submesh( sm );
 191       }
 192    }
 193 }
 194
 195 VG_STATIC
 196 void world_render_pass( world_instance *world, struct world_pass *pass ){
 197    for( int i=0; i<world->surface_count; i++ ){
 198       struct world_surface *mat = &world->surfaces[i];
 199
 200       if( mat->info.shader == pass->shader ){
 201          mdl_submesh *sm;
 202
 203          if( pass->geo_type == k_world_geo_type_solid ){
 204             sm = &mat->sm_geo;
 205          }
 206          else{
 207             world_render_traffic( world, i, pass );
 208             sm = &mat->sm_no_collide;
 209          }
 210
 211          if( !sm->indice_count )
 212             continue;
 213
 214          m4x3f mmdl;
 215          m4x3_identity( mmdl );
 216          pass->fn_set_mdl( mmdl );
 217          pass->fn_set_uPvmPrev( pass->cam->mtx_prev.pv );
 218
 219          pass->fn_bind_textures( world, mat );
 220          mdl_draw_submesh( sm );
 221       }
 222    }
 223 }
 224
 225 VG_STATIC
 226 void world_render_challenges( world_instance *world ){
 227    if( !world ) return;
 228
 229    shader_scene_fxglow_use();
 230    for( u32 i=0; i<mdl_arrcount(&world->ent_challenge); i++ ){
 231       ent_challenge *challenge = mdl_arritm(&world->ent_challenge,i);
 232
 233       m4x3f mmdl;
 234       mdl_transform_m4x3( &challenge->transform, mmdl );
 235       shader_scene_fxglow_uMdl( mmdl );
 236    }
 237 }
 238
 239 VG_STATIC
 240 void world_render_both_stages( world_instance *world, struct world_pass *pass )
 241 {
 242    mesh_bind( &world->mesh_geo );
 243    pass->geo_type = k_world_geo_type_solid;
 244    world_render_pass( world, pass );
 245
 246    glDisable( GL_CULL_FACE );
 247    mesh_bind( &world->mesh_no_collide );
 248    pass->geo_type = k_world_geo_type_nonsolid;
 249    world_render_pass( world, pass );
 250    glEnable( GL_CULL_FACE );
 251 }
 252
 253 VG_STATIC void bindpoint_diffuse_texture1( world_instance *world,
 254                                            struct world_surface *mat )
 255
 256 {
 257    glActiveTexture( GL_TEXTURE1 );
 258    glBindTexture( GL_TEXTURE_2D, world->textures[ mat->info.tex_diffuse ] );
 259 }
 260
 261 VG_STATIC void render_world_vb( world_instance *world, camera *cam )
 262 {
 263    shader_scene_vertex_blend_use();
 264    shader_scene_vertex_blend_uTexGarbage(0);
 265    shader_scene_vertex_blend_uTexGradients(1);
 266    world_link_lighting_ub( world, _shader_scene_vertex_blend.id );
 267    world_bind_position_texture( world, _shader_scene_vertex_blend.id,
 268                                 _uniform_scene_vertex_blend_g_world_depth, 2 );
 269    world_bind_light_array( world, _shader_scene_vertex_blend.id,
 270                                 _uniform_scene_vertex_blend_uLightsArray, 3 );
 271    world_bind_light_index( world, _shader_scene_vertex_blend.id,
 272                                 _uniform_scene_vertex_blend_uLightsIndex, 4 );
 273
 274    glActiveTexture( GL_TEXTURE0 );
 275    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 276
 277    shader_scene_vertex_blend_uPv( cam->mtx.pv );
 278    shader_scene_vertex_blend_uCamera( cam->transform[3] );
 279
 280    struct world_pass pass = {
 281       .shader = k_shader_standard_vertex_blend,
 282       .cam = cam,
 283       .fn_bind_textures = bindpoint_diffuse_texture1,
 284       .fn_set_mdl = shader_scene_vertex_blend_uMdl,
 285       .fn_set_uPvmPrev = shader_scene_vertex_blend_uPvmPrev,
 286    };
 287
 288    world_render_both_stages( world, &pass );
 289 }
 290
 291 VG_STATIC void render_world_standard( world_instance *world, camera *cam )
 292 {
 293    shader_scene_standard_use();
 294    shader_scene_standard_uTexGarbage(0);
 295    shader_scene_standard_uTexMain(1);
 296    shader_scene_standard_uPv( cam->mtx.pv );
 297
 298    world_link_lighting_ub( world, _shader_scene_standard.id );
 299    world_bind_position_texture( world, _shader_scene_standard.id,
 300                                 _uniform_scene_standard_g_world_depth, 2 );
 301    world_bind_light_array( world, _shader_scene_standard.id,
 302                                 _uniform_scene_standard_uLightsArray, 3 );
 303    world_bind_light_index( world, _shader_scene_standard.id,
 304                                 _uniform_scene_standard_uLightsIndex, 4 );
 305
 306    bind_terrain_noise();
 307    shader_scene_standard_uCamera( cam->transform[3] );
 308
 309    struct world_pass pass = {
 310       .shader = k_shader_standard,
 311       .cam = cam,
 312       .fn_bind_textures = bindpoint_diffuse_texture1,
 313       .fn_set_mdl = shader_scene_standard_uMdl,
 314       .fn_set_uPvmPrev = shader_scene_standard_uPvmPrev,
 315    };
 316
 317    world_render_both_stages( world, &pass );
 318 }
 319
 320 VG_STATIC void render_world_alphatest( world_instance *world, camera *cam )
 321 {
 322    shader_scene_standard_alphatest_use();
 323    shader_scene_standard_alphatest_uTexGarbage(0);
 324    shader_scene_standard_alphatest_uTexMain(1);
 325    shader_scene_standard_alphatest_uPv( cam->mtx.pv );
 326
 327    world_link_lighting_ub( world, _shader_scene_standard_alphatest.id );
 328    world_bind_position_texture( world, _shader_scene_standard_alphatest.id,
 329                         _uniform_scene_standard_alphatest_g_world_depth, 2 );
 330    world_bind_light_array( world, _shader_scene_standard_alphatest.id,
 331                         _uniform_scene_standard_alphatest_uLightsArray, 3 );
 332    world_bind_light_index( world, _shader_scene_standard_alphatest.id,
 333                            _uniform_scene_standard_alphatest_uLightsIndex, 4 );
 334
 335
 336    bind_terrain_noise();
 337
 338
 339    shader_scene_standard_alphatest_uCamera( cam->transform[3] );
 340
 341    glDisable(GL_CULL_FACE);
 342
 343    struct world_pass pass = {
 344       .shader = k_shader_standard_cutout,
 345       .cam = cam,
 346       .fn_bind_textures = bindpoint_diffuse_texture1,
 347       .fn_set_mdl = shader_scene_standard_alphatest_uMdl,
 348       .fn_set_uPvmPrev = shader_scene_standard_alphatest_uPvmPrev,
 349    };
 350
 351    world_render_both_stages( world, &pass );
 352
 353    glEnable(GL_CULL_FACE);
 354 }
 355
 356 VG_STATIC void render_world_fxglow( world_instance *world, camera *cam ){
 357    //glDrawBuffers( 1, (GLenum[]){ GL_COLOR_ATTACHMENT0 } );
 358
 359    shader_scene_fxglow_use();
 360    shader_scene_fxglow_uTexMain(1);
 361    shader_scene_fxglow_uPv( cam->mtx.pv );
 362
 363    world_link_lighting_ub( world, _shader_scene_fxglow.id );
 364    world_bind_position_texture( world, _shader_scene_fxglow.id,
 365                         _uniform_scene_fxglow_g_world_depth, 2 );
 366    world_bind_light_array( world, _shader_scene_fxglow.id,
 367                         _uniform_scene_fxglow_uLightsArray, 3 );
 368    world_bind_light_index( world, _shader_scene_fxglow.id,
 369                            _uniform_scene_fxglow_uLightsIndex, 4 );
 370
 371    shader_scene_fxglow_uCamera( cam->transform[3] );
 372    glDisable(GL_CULL_FACE);
 373
 374    struct world_pass pass = {
 375       .shader = k_shader_fxglow,
 376       .cam = cam,
 377       .fn_bind_textures = bindpoint_diffuse_texture1,
 378       .fn_set_mdl = shader_scene_fxglow_uMdl,
 379       .fn_set_uPvmPrev = shader_scene_fxglow_uPvmPrev,
 380    };
 381
 382    world_render_both_stages( world, &pass );
 383
 384    glEnable(GL_CULL_FACE);
 385    //glDrawBuffers( 2, (GLenum[]){ GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 } );
 386 }
 387
 388 VG_STATIC void bindpoint_terrain( world_instance *world,
 389                                   struct world_surface *mat )
 390 {
 391    glActiveTexture( GL_TEXTURE1 );
 392    glBindTexture( GL_TEXTURE_2D, world->textures[ mat->info.tex_diffuse ] );
 393
 394    shader_scene_terrain_uSandColour( mat->info.colour );
 395    shader_scene_terrain_uBlendOffset( mat->info.colour1 );
 396 }
 397
 398 VG_STATIC void render_terrain( world_instance *world, camera *cam )
 399 {
 400    shader_scene_terrain_use();
 401    shader_scene_terrain_uTexGarbage(0);
 402    shader_scene_terrain_uTexGradients(1);
 403
 404    world_link_lighting_ub( world, _shader_scene_terrain.id );
 405    world_bind_position_texture( world, _shader_scene_terrain.id,
 406                         _uniform_scene_terrain_g_world_depth, 2 );
 407    world_bind_light_array( world, _shader_scene_terrain.id,
 408                         _uniform_scene_terrain_uLightsArray, 3 );
 409    world_bind_light_index( world, _shader_scene_terrain.id,
 410                            _uniform_scene_terrain_uLightsIndex, 4 );
 411
 412    glActiveTexture( GL_TEXTURE0 );
 413    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 414
 415    shader_scene_terrain_uPv( cam->mtx.pv );
 416    shader_scene_terrain_uCamera( cam->transform[3] );
 417
 418    struct world_pass pass = {
 419       .shader = k_shader_terrain_blend,
 420       .cam = cam,
 421       .fn_bind_textures = bindpoint_terrain,
 422       .fn_set_mdl = shader_scene_terrain_uMdl,
 423       .fn_set_uPvmPrev = shader_scene_terrain_uPvmPrev,
 424    };
 425
 426    world_render_both_stages( world, &pass );
 427 }
 428
 429 VG_STATIC void render_sky( world_instance *world, camera *cam )
 430 {
 431    /*
 432     * Modify matrix to remove clipping and view translation
 433     */
 434    m4x4f v,
 435          v_prev,
 436          pv,
 437          pv_prev;
 438
 439    m4x4_copy( cam->mtx.v, v );
 440    m4x4_copy( cam->mtx_prev.v, v_prev );
 441    v3_zero( v[3] );
 442    v3_zero( v_prev[3] );
 443
 444    m4x4_copy( cam->mtx.p,      pv );
 445    m4x4_copy( cam->mtx_prev.p, pv_prev );
 446    m4x4_reset_clipping( pv,      cam->farz, cam->nearz );
 447    m4x4_reset_clipping( pv_prev, cam->farz, cam->nearz );
 448
 449    m4x4_mul( pv,      v,      pv );
 450    m4x4_mul( pv_prev, v_prev, pv_prev );
 451
 452    m4x3f identity_matrix;
 453    m4x3_identity( identity_matrix );
 454
 455    /*
 456     * Draw
 457     */
 458    shader_model_sky_use();
 459    shader_model_sky_uMdl( identity_matrix );
 460    shader_model_sky_uPv( pv );
 461    shader_model_sky_uPvmPrev( pv_prev );
 462    shader_model_sky_uTexGarbage(0);
 463    world_link_lighting_ub( world, _shader_model_sky.id );
 464
 465    glActiveTexture( GL_TEXTURE0 );
 466    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 467
 468    glDepthMask( GL_FALSE );
 469    glDisable( GL_DEPTH_TEST );
 470
 471    mesh_bind( &world_render.skydome );
 472    mesh_draw( &world_render.skydome );
 473
 474    glEnable( GL_DEPTH_TEST );
 475    glDepthMask( GL_TRUE );
 476 }
 477
 478 VG_STATIC void render_world_gates( world_instance *world, camera *cam,
 479                                    int layer_depth )
 480 {
 481    float closest = INFINITY;
 482    struct ent_gate *gate = NULL;
 483
 484    for( u32 i=0; i<mdl_arrcount(&world->ent_gate); i++ ){
 485       ent_gate *gi = mdl_arritm( &world->ent_gate, i );
 486
 487       if( gi->type == k_gate_type_unlinked )
 488          continue;
 489
 490       float dist = v3_dist2( gi->co[0], cam->transform[3] );
 491
 492       vg_line_point( gi->co[0], 0.25f, VG__BLUE );
 493
 494       if( dist < closest ){
 495          closest = dist;
 496          gate = gi;
 497       }
 498    }
 499
 500    if( gate ){
 501       /* should really be set in fixed update since its used in the physics
 502        * of most systems. too bad! */
 503       world->rendering_gate = gate;
 504
 505       if( gate->type == k_gate_type_teleport ){
 506          render_gate( world, gate, cam, layer_depth );
 507       }
 508       else if( gate->type == k_gate_type_nonlocel ){
 509          if( world_loader.state != k_world_loader_none ){
 510             world->rendering_gate = NULL;
 511             return;
 512          }
 513
 514          world_instance *dest_world = &world_static.worlds[ gate->target ];
 515          render_gate( dest_world, gate, cam, layer_depth );
 516       }
 517       else
 518          world->rendering_gate = NULL;
 519    }
 520 }
 521
 522 VG_STATIC void world_prerender( world_instance *world )
 523 {
 524
 525    if( mdl_arrcount( &world->ent_light ) ){
 526       f32 rate = vg_maxf(0.1f, fabsf(k_day_length)) * vg_signf(k_day_length);
 527       world->time += vg.time_delta * (1.0/(rate*60.0));
 528    }
 529    else{
 530       world->time = 0.834;
 531    }
 532
 533    struct ub_world_lighting *state = &world->ub_lighting;
 534
 535    state->g_time = world->time;
 536    state->g_realtime = vg.time;
 537    state->g_debug_indices = k_debug_light_indices;
 538    state->g_light_preview = k_light_preview;
 539    state->g_debug_complexity = k_debug_light_complexity;
 540    state->g_time_of_day = vg_fractf( world->time );
 541    state->g_day_phase   = cosf( state->g_time_of_day * VG_PIf * 2.0f );
 542    state->g_sunset_phase= cosf( state->g_time_of_day * VG_PIf * 4.0f + VG_PIf );
 543
 544    state->g_day_phase    =       state->g_day_phase    * 0.5f + 0.5f;
 545    state->g_sunset_phase = powf( state->g_sunset_phase * 0.5f + 0.5f, 6.0f );
 546
 547    float a = state->g_time_of_day * VG_PIf * 2.0f;
 548    state->g_sun_dir[0] = sinf( a );
 549    state->g_sun_dir[1] = cosf( a );
 550    state->g_sun_dir[2] = 0.2f;
 551    v3_normalize( state->g_sun_dir );
 552
 553    world->probabilities[ k_probability_curve_constant ] = 1.0f;
 554    float dp = state->g_day_phase;
 555
 556    world->probabilities[ k_probability_curve_wildlife_day ] =
 557       (dp*dp*0.8f+state->g_sunset_phase)*0.8f;
 558    world->probabilities[ k_probability_curve_wildlife_night ] =
 559       1.0f-powf(fabsf((state->g_time_of_day-0.5f)*5.0f),5.0f);
 560
 561    glBindBuffer( GL_UNIFORM_BUFFER, world->ubo_lighting );
 562    glBufferSubData( GL_UNIFORM_BUFFER, 0,
 563                     sizeof(struct ub_world_lighting), &world->ub_lighting );
 564 }
 565
 566 VG_STATIC void skateshop_render(void);
 567 VG_STATIC void render_world( world_instance *world, camera *cam,
 568                              int layer_depth )
 569 {
 570    render_sky( world, cam );
 571
 572    render_world_routes( world, cam, layer_depth );
 573    render_world_standard( world, cam );
 574    render_world_vb( world, cam );
 575    render_world_alphatest( world, cam );
 576    render_world_fxglow( world, cam );
 577    render_terrain( world, cam );
 578
 579    if( layer_depth == 0 ){
 580       skateshop_render();
 581
 582       /* Render SFD's */
 583       u32 closest = 0;
 584       float min_dist = INFINITY;
 585
 586       if( !mdl_arrcount( &world->ent_route ) )
 587          return;
 588
 589       for( u32 i=0; i<mdl_arrcount( &world->ent_route ); i++ ){
 590          ent_route *route = mdl_arritm( &world->ent_route, i );
 591          float dist = v3_dist2( route->board_transform[3], cam->pos );
 592
 593          if( dist < min_dist ){
 594             min_dist = dist;
 595             closest = i;
 596          }
 597       }
 598
 599       ent_route *route = mdl_arritm( &world->ent_route, closest );
 600       sfd_render( world, cam, route->board_transform );
 601    }
 602 }
 603
 604 VG_STATIC void render_world_depth( world_instance *world, camera *cam )
 605 {
 606    m4x3f identity_matrix;
 607    m4x3_identity( identity_matrix );
 608
 609    shader_scene_depth_use();
 610    shader_scene_depth_uCamera( cam->transform[3] );
 611    shader_scene_depth_uPv( cam->mtx.pv );
 612    shader_scene_depth_uPvmPrev( cam->mtx_prev.pv );
 613    shader_scene_depth_uMdl( identity_matrix );
 614    world_link_lighting_ub( world, _shader_scene_depth.id );
 615
 616    mesh_bind( &world->mesh_geo );
 617    mesh_draw( &world->mesh_geo );
 618 }
 619
 620 VG_STATIC void render_world_position( world_instance *world, camera *cam )
 621 {
 622    m4x3f identity_matrix;
 623    m4x3_identity( identity_matrix );
 624
 625    shader_scene_position_use();
 626    shader_scene_position_uCamera( cam->transform[3] );
 627    shader_scene_position_uPv( cam->mtx.pv );
 628    shader_scene_position_uPvmPrev( cam->mtx_prev.pv );
 629    shader_scene_position_uMdl( identity_matrix );
 630    world_link_lighting_ub( world, _shader_scene_position.id );
 631
 632    mesh_bind( &world->mesh_geo );
 633    mesh_draw( &world->mesh_geo );
 634 }
 635
 636 #endif