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 /* TODO: high level control pass renders. */
 158
 159 VG_STATIC
 160 void world_render_if( world_instance *world, struct world_pass *pass )
 161 {
 162    for( int i=0; i<world->surface_count; i++ ){
 163       struct world_surface *mat = &world->surfaces[i];
 164
 165       if( mat->info.shader == pass->shader ){
 166          mdl_submesh *sm;
 167
 168          if( pass->geo_type == k_world_geo_type_solid )
 169             sm = &mat->sm_geo;
 170          else
 171             sm = &mat->sm_no_collide;
 172
 173          if( !sm->indice_count )
 174             continue;
 175
 176          m4x3f mmdl;
 177          m4x3_identity( mmdl );
 178          pass->fn_set_mdl( mmdl );
 179          pass->fn_set_uPvmPrev( pass->cam->mtx_prev.pv );
 180
 181          pass->fn_bind_textures( world, mat );
 182          mdl_draw_submesh( sm );
 183
 184          for( u32 j=0; j<mdl_arrcount( &world->ent_traffic ); j++ ){
 185             ent_traffic *traffic = mdl_arritm( &world->ent_traffic, j );
 186
 187             for( u32 k=0; k<traffic->submesh_count; k++ ){
 188                sm = mdl_arritm( &world->meta.submeshs,
 189                                  traffic->submesh_start+k );
 190
 191                q_m3x3( traffic->transform.q, mmdl );
 192                v3_copy( traffic->transform.co, mmdl[3] );
 193
 194                m4x4f m4mdl;
 195                m4x3_expand( mmdl, m4mdl );
 196                m4x4_mul( pass->cam->mtx_prev.pv, m4mdl, m4mdl );
 197
 198                pass->fn_set_mdl( mmdl );
 199                pass->fn_set_uPvmPrev( m4mdl );
 200
 201                mdl_draw_submesh( sm );
 202             }
 203          }
 204       }
 205    }
 206 }
 207
 208 VG_STATIC
 209 void world_render_challenges( world_instance *world ){
 210    if( !world ) return;
 211
 212    shader_scene_fxglow_use();
 213    for( u32 i=0; i<mdl_arrcount(&world->ent_challenge); i++ ){
 214       ent_challenge *challenge = mdl_arritm(&world->ent_challenge,i);
 215
 216       m4x3f mmdl;
 217       mdl_transform_m4x3( &challenge->transform, mmdl );
 218       shader_scene_fxglow_uMdl( mmdl );
 219    }
 220 }
 221
 222 VG_STATIC
 223 void world_render_both_stages( world_instance *world, struct world_pass *pass )
 224 {
 225    mesh_bind( &world->mesh_geo );
 226    pass->geo_type = k_world_geo_type_solid;
 227    world_render_if( world, pass );
 228
 229    glDisable( GL_CULL_FACE );
 230    mesh_bind( &world->mesh_no_collide );
 231    pass->geo_type = k_world_geo_type_nonsolid;
 232    world_render_if( world, pass );
 233    glEnable( GL_CULL_FACE );
 234 }
 235
 236 VG_STATIC void bindpoint_diffuse_texture1( world_instance *world,
 237                                            struct world_surface *mat )
 238
 239 {
 240    glActiveTexture( GL_TEXTURE1 );
 241    glBindTexture( GL_TEXTURE_2D, world->textures[ mat->info.tex_diffuse ] );
 242 }
 243
 244 VG_STATIC void render_world_vb( world_instance *world, camera *cam )
 245 {
 246    shader_scene_vertex_blend_use();
 247    shader_scene_vertex_blend_uTexGarbage(0);
 248    shader_scene_vertex_blend_uTexGradients(1);
 249    world_link_lighting_ub( world, _shader_scene_vertex_blend.id );
 250    world_bind_position_texture( world, _shader_scene_vertex_blend.id,
 251                                 _uniform_scene_vertex_blend_g_world_depth, 2 );
 252    world_bind_light_array( world, _shader_scene_vertex_blend.id,
 253                                 _uniform_scene_vertex_blend_uLightsArray, 3 );
 254    world_bind_light_index( world, _shader_scene_vertex_blend.id,
 255                                 _uniform_scene_vertex_blend_uLightsIndex, 4 );
 256
 257    glActiveTexture( GL_TEXTURE0 );
 258    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 259
 260    shader_scene_vertex_blend_uPv( cam->mtx.pv );
 261    shader_scene_vertex_blend_uCamera( cam->transform[3] );
 262
 263    struct world_pass pass = {
 264       .shader = k_shader_standard_vertex_blend,
 265       .cam = cam,
 266       .fn_bind_textures = bindpoint_diffuse_texture1,
 267       .fn_set_mdl = shader_scene_vertex_blend_uMdl,
 268       .fn_set_uPvmPrev = shader_scene_vertex_blend_uPvmPrev,
 269    };
 270
 271    world_render_both_stages( world, &pass );
 272 }
 273
 274 VG_STATIC void render_world_standard( world_instance *world, camera *cam )
 275 {
 276    shader_scene_standard_use();
 277    shader_scene_standard_uTexGarbage(0);
 278    shader_scene_standard_uTexMain(1);
 279    shader_scene_standard_uPv( cam->mtx.pv );
 280
 281    world_link_lighting_ub( world, _shader_scene_standard.id );
 282    world_bind_position_texture( world, _shader_scene_standard.id,
 283                                 _uniform_scene_standard_g_world_depth, 2 );
 284    world_bind_light_array( world, _shader_scene_standard.id,
 285                                 _uniform_scene_standard_uLightsArray, 3 );
 286    world_bind_light_index( world, _shader_scene_standard.id,
 287                                 _uniform_scene_standard_uLightsIndex, 4 );
 288
 289    bind_terrain_noise();
 290    shader_scene_standard_uCamera( cam->transform[3] );
 291
 292    struct world_pass pass = {
 293       .shader = k_shader_standard,
 294       .cam = cam,
 295       .fn_bind_textures = bindpoint_diffuse_texture1,
 296       .fn_set_mdl = shader_scene_standard_uMdl,
 297       .fn_set_uPvmPrev = shader_scene_standard_uPvmPrev,
 298    };
 299
 300    world_render_both_stages( world, &pass );
 301 }
 302
 303 VG_STATIC void render_world_alphatest( world_instance *world, camera *cam )
 304 {
 305    shader_scene_standard_alphatest_use();
 306    shader_scene_standard_alphatest_uTexGarbage(0);
 307    shader_scene_standard_alphatest_uTexMain(1);
 308    shader_scene_standard_alphatest_uPv( cam->mtx.pv );
 309
 310    world_link_lighting_ub( world, _shader_scene_standard_alphatest.id );
 311    world_bind_position_texture( world, _shader_scene_standard_alphatest.id,
 312                         _uniform_scene_standard_alphatest_g_world_depth, 2 );
 313    world_bind_light_array( world, _shader_scene_standard_alphatest.id,
 314                         _uniform_scene_standard_alphatest_uLightsArray, 3 );
 315    world_bind_light_index( world, _shader_scene_standard_alphatest.id,
 316                            _uniform_scene_standard_alphatest_uLightsIndex, 4 );
 317
 318
 319    bind_terrain_noise();
 320
 321
 322    shader_scene_standard_alphatest_uCamera( cam->transform[3] );
 323
 324    glDisable(GL_CULL_FACE);
 325
 326    struct world_pass pass = {
 327       .shader = k_shader_standard_cutout,
 328       .cam = cam,
 329       .fn_bind_textures = bindpoint_diffuse_texture1,
 330       .fn_set_mdl = shader_scene_standard_alphatest_uMdl,
 331       .fn_set_uPvmPrev = shader_scene_standard_alphatest_uPvmPrev,
 332    };
 333
 334    world_render_both_stages( world, &pass );
 335
 336    glEnable(GL_CULL_FACE);
 337 }
 338
 339 VG_STATIC void render_world_fxglow( world_instance *world, camera *cam ){
 340    //glDrawBuffers( 1, (GLenum[]){ GL_COLOR_ATTACHMENT0 } );
 341
 342    shader_scene_fxglow_use();
 343    shader_scene_fxglow_uTexMain(1);
 344    shader_scene_fxglow_uPv( cam->mtx.pv );
 345
 346    world_link_lighting_ub( world, _shader_scene_fxglow.id );
 347    world_bind_position_texture( world, _shader_scene_fxglow.id,
 348                         _uniform_scene_fxglow_g_world_depth, 2 );
 349    world_bind_light_array( world, _shader_scene_fxglow.id,
 350                         _uniform_scene_fxglow_uLightsArray, 3 );
 351    world_bind_light_index( world, _shader_scene_fxglow.id,
 352                            _uniform_scene_fxglow_uLightsIndex, 4 );
 353
 354    shader_scene_fxglow_uCamera( cam->transform[3] );
 355    glDisable(GL_CULL_FACE);
 356
 357    struct world_pass pass = {
 358       .shader = k_shader_fxglow,
 359       .cam = cam,
 360       .fn_bind_textures = bindpoint_diffuse_texture1,
 361       .fn_set_mdl = shader_scene_fxglow_uMdl,
 362       .fn_set_uPvmPrev = shader_scene_fxglow_uPvmPrev,
 363    };
 364
 365    world_render_both_stages( world, &pass );
 366
 367    glEnable(GL_CULL_FACE);
 368    //glDrawBuffers( 2, (GLenum[]){ GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1 } );
 369 }
 370
 371 VG_STATIC void bindpoint_terrain( world_instance *world,
 372                                   struct world_surface *mat )
 373 {
 374    glActiveTexture( GL_TEXTURE1 );
 375    glBindTexture( GL_TEXTURE_2D, world->textures[ mat->info.tex_diffuse ] );
 376
 377    shader_scene_terrain_uSandColour( mat->info.colour );
 378    shader_scene_terrain_uBlendOffset( mat->info.colour1 );
 379 }
 380
 381 VG_STATIC void render_terrain( world_instance *world, camera *cam )
 382 {
 383    shader_scene_terrain_use();
 384    shader_scene_terrain_uTexGarbage(0);
 385    shader_scene_terrain_uTexGradients(1);
 386
 387    world_link_lighting_ub( world, _shader_scene_terrain.id );
 388    world_bind_position_texture( world, _shader_scene_terrain.id,
 389                         _uniform_scene_terrain_g_world_depth, 2 );
 390    world_bind_light_array( world, _shader_scene_terrain.id,
 391                         _uniform_scene_terrain_uLightsArray, 3 );
 392    world_bind_light_index( world, _shader_scene_terrain.id,
 393                            _uniform_scene_terrain_uLightsIndex, 4 );
 394
 395    glActiveTexture( GL_TEXTURE0 );
 396    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 397
 398    shader_scene_terrain_uPv( cam->mtx.pv );
 399    shader_scene_terrain_uCamera( cam->transform[3] );
 400
 401    struct world_pass pass = {
 402       .shader = k_shader_terrain_blend,
 403       .cam = cam,
 404       .fn_bind_textures = bindpoint_terrain,
 405       .fn_set_mdl = shader_scene_terrain_uMdl,
 406       .fn_set_uPvmPrev = shader_scene_terrain_uPvmPrev,
 407    };
 408
 409    world_render_both_stages( world, &pass );
 410 }
 411
 412 VG_STATIC void render_sky( world_instance *world, camera *cam )
 413 {
 414    /*
 415     * Modify matrix to remove clipping and view translation
 416     */
 417    m4x4f v,
 418          v_prev,
 419          pv,
 420          pv_prev;
 421
 422    m4x4_copy( cam->mtx.v, v );
 423    m4x4_copy( cam->mtx_prev.v, v_prev );
 424    v3_zero( v[3] );
 425    v3_zero( v_prev[3] );
 426
 427    m4x4_copy( cam->mtx.p,      pv );
 428    m4x4_copy( cam->mtx_prev.p, pv_prev );
 429    m4x4_reset_clipping( pv,      cam->farz, cam->nearz );
 430    m4x4_reset_clipping( pv_prev, cam->farz, cam->nearz );
 431
 432    m4x4_mul( pv,      v,      pv );
 433    m4x4_mul( pv_prev, v_prev, pv_prev );
 434
 435    m4x3f identity_matrix;
 436    m4x3_identity( identity_matrix );
 437
 438    /*
 439     * Draw
 440     */
 441    shader_model_sky_use();
 442    shader_model_sky_uMdl( identity_matrix );
 443    shader_model_sky_uPv( pv );
 444    shader_model_sky_uPvmPrev( pv_prev );
 445    shader_model_sky_uTexGarbage(0);
 446    world_link_lighting_ub( world, _shader_model_sky.id );
 447
 448    glActiveTexture( GL_TEXTURE0 );
 449    glBindTexture( GL_TEXTURE_2D, world_render.tex_terrain_noise );
 450
 451    glDepthMask( GL_FALSE );
 452    glDisable( GL_DEPTH_TEST );
 453
 454    mesh_bind( &world_render.skydome );
 455    mesh_draw( &world_render.skydome );
 456
 457    glEnable( GL_DEPTH_TEST );
 458    glDepthMask( GL_TRUE );
 459 }
 460
 461 VG_STATIC void render_world_gates( world_instance *world, camera *cam,
 462                                    int layer_depth )
 463 {
 464    float closest = INFINITY;
 465    struct ent_gate *gate = NULL;
 466
 467    for( u32 i=0; i<mdl_arrcount(&world->ent_gate); i++ ){
 468       ent_gate *gi = mdl_arritm( &world->ent_gate, i );
 469
 470       if( gi->type == k_gate_type_unlinked )
 471          continue;
 472
 473       float dist = v3_dist2( gi->co[0], cam->transform[3] );
 474
 475       vg_line_point( gi->co[0], 0.25f, VG__BLUE );
 476
 477       if( dist < closest ){
 478          closest = dist;
 479          gate = gi;
 480       }
 481    }
 482
 483    if( gate ){
 484       /* should really be set in fixed update since its used in the physics
 485        * of most systems. too bad! */
 486       world->rendering_gate = gate;
 487
 488       if( gate->type == k_gate_type_teleport ){
 489          render_gate( world, gate, cam, layer_depth );
 490       }
 491       else if( gate->type == k_gate_type_nonlocel ){
 492          if( world_loader.state != k_world_loader_none ){
 493             world->rendering_gate = NULL;
 494             return;
 495          }
 496
 497          world_instance *dest_world = &world_static.worlds[ gate->target ];
 498          render_gate( dest_world, gate, cam, layer_depth );
 499       }
 500       else
 501          world->rendering_gate = NULL;
 502    }
 503 }
 504
 505 VG_STATIC void world_prerender( world_instance *world )
 506 {
 507
 508    if( mdl_arrcount( &world->ent_light ) ){
 509       f32 rate = vg_maxf(0.1f, fabsf(k_day_length)) * vg_signf(k_day_length);
 510       world->time += vg.time_delta * (1.0/(rate*60.0));
 511    }
 512    else{
 513       world->time = 0.834;
 514    }
 515
 516    struct ub_world_lighting *state = &world->ub_lighting;
 517
 518    state->g_time = world->time;
 519    state->g_realtime = vg.time;
 520    state->g_debug_indices = k_debug_light_indices;
 521    state->g_light_preview = k_light_preview;
 522    state->g_debug_complexity = k_debug_light_complexity;
 523    state->g_time_of_day = vg_fractf( world->time );
 524    state->g_day_phase   = cosf( state->g_time_of_day * VG_PIf * 2.0f );
 525    state->g_sunset_phase= cosf( state->g_time_of_day * VG_PIf * 4.0f + VG_PIf );
 526
 527    state->g_day_phase    =       state->g_day_phase    * 0.5f + 0.5f;
 528    state->g_sunset_phase = powf( state->g_sunset_phase * 0.5f + 0.5f, 6.0f );
 529
 530    float a = state->g_time_of_day * VG_PIf * 2.0f;
 531    state->g_sun_dir[0] = sinf( a );
 532    state->g_sun_dir[1] = cosf( a );
 533    state->g_sun_dir[2] = 0.2f;
 534    v3_normalize( state->g_sun_dir );
 535
 536    world->probabilities[ k_probability_curve_constant ] = 1.0f;
 537    float dp = state->g_day_phase;
 538
 539    world->probabilities[ k_probability_curve_wildlife_day ] =
 540       (dp*dp*0.8f+state->g_sunset_phase)*0.8f;
 541    world->probabilities[ k_probability_curve_wildlife_night ] =
 542       1.0f-powf(fabsf((state->g_time_of_day-0.5f)*5.0f),5.0f);
 543
 544    glBindBuffer( GL_UNIFORM_BUFFER, world->ubo_lighting );
 545    glBufferSubData( GL_UNIFORM_BUFFER, 0,
 546                     sizeof(struct ub_world_lighting), &world->ub_lighting );
 547 }
 548
 549 VG_STATIC void skateshop_render(void);
 550 VG_STATIC void render_world( world_instance *world, camera *cam,
 551                              int layer_depth )
 552 {
 553    render_sky( world, cam );
 554
 555    render_world_routes( world, cam, layer_depth );
 556    render_world_standard( world, cam );
 557    render_world_vb( world, cam );
 558    render_world_alphatest( world, cam );
 559    render_world_fxglow( world, cam );
 560    render_terrain( world, cam );
 561
 562    if( layer_depth == 0 ){
 563       skateshop_render();
 564
 565       /* Render SFD's */
 566       u32 closest = 0;
 567       float min_dist = INFINITY;
 568
 569       if( !mdl_arrcount( &world->ent_route ) )
 570          return;
 571
 572       for( u32 i=0; i<mdl_arrcount( &world->ent_route ); i++ ){
 573          ent_route *route = mdl_arritm( &world->ent_route, i );
 574          float dist = v3_dist2( route->board_transform[3], cam->pos );
 575
 576          if( dist < min_dist ){
 577             min_dist = dist;
 578             closest = i;
 579          }
 580       }
 581
 582       ent_route *route = mdl_arritm( &world->ent_route, closest );
 583       sfd_render( world, cam, route->board_transform );
 584    }
 585 }
 586
 587 VG_STATIC void render_world_depth( world_instance *world, camera *cam )
 588 {
 589    m4x3f identity_matrix;
 590    m4x3_identity( identity_matrix );
 591
 592    shader_scene_depth_use();
 593    shader_scene_depth_uCamera( cam->transform[3] );
 594    shader_scene_depth_uPv( cam->mtx.pv );
 595    shader_scene_depth_uPvmPrev( cam->mtx_prev.pv );
 596    shader_scene_depth_uMdl( identity_matrix );
 597    world_link_lighting_ub( world, _shader_scene_depth.id );
 598
 599    mesh_bind( &world->mesh_geo );
 600    mesh_draw( &world->mesh_geo );
 601 }
 602
 603 VG_STATIC void render_world_position( world_instance *world, camera *cam )
 604 {
 605    m4x3f identity_matrix;
 606    m4x3_identity( identity_matrix );
 607
 608    shader_scene_position_use();
 609    shader_scene_position_uCamera( cam->transform[3] );
 610    shader_scene_position_uPv( cam->mtx.pv );
 611    shader_scene_position_uPvmPrev( cam->mtx_prev.pv );
 612    shader_scene_position_uMdl( identity_matrix );
 613    world_link_lighting_ub( world, _shader_scene_position.id );
 614
 615    mesh_bind( &world->mesh_geo );
 616    mesh_draw( &world->mesh_geo );
 617 }
 618
 619 #endif