2 * Copyright (C) 2021-2023 Mt.ZERO Software, Harry Godden - All Rights Reserved
4 * World generation/population. Different to regular loading, since it needs to
5 * create geometry, apply procedural stuff and save that image to files etc.
12 #include "world_gen.h"
13 #include "world_load.h"
14 #include "world_volumes.h"
15 #include "world_gate.h"
18 * Add all triangles from the model, which match the material ID
19 * applies affine transform to the model
21 static void world_add_all_if_material( m4x3f transform
, scene_context
*scene
,
22 mdl_context
*mdl
, u32 id
)
24 for( u32 i
=0; i
<mdl_arrcount(&mdl
->meshs
); i
++ ){
25 mdl_mesh
*mesh
= mdl_arritm( &mdl
->meshs
, i
);
27 for( u32 j
=0; j
<mesh
->submesh_count
; j
++ ){
28 mdl_submesh
*sm
= mdl_arritm( &mdl
->submeshs
, mesh
->submesh_start
+j
);
29 if( sm
->material_id
== id
){
31 mdl_transform_m4x3( &mesh
->transform
, transform2
);
32 m4x3_mul( transform
, transform2
, transform2
);
34 scene_add_mdl_submesh( scene
, mdl
, sm
, transform2
);
41 * Adds a small blob shape to the world at a raycast location. This is for the
49 static void world_gen_add_blob( world_instance
*world
,
50 scene_context
*scene
, ray_hit
*hit
)
53 v4f qsurface
, qrandom
;
56 v3_cross( (v3f
){0.0f
,1.0f
,0.0f
}, hit
->normal
, axis
);
58 float angle
= v3_dot(hit
->normal
,(v3f
){0.0f
,1.0f
,0.0f
});
59 q_axis_angle( qsurface
, axis
, angle
);
60 q_axis_angle( qrandom
, (v3f
){0.0f
,1.0f
,0.0f
}, vg_randf64()*VG_TAUf
);
61 q_mul( qsurface
, qrandom
, qsurface
);
62 q_m3x3( qsurface
, transform
);
63 v3_copy( hit
->pos
, transform
[3] );
67 { .co
= { -1.00f
, 0.0f
, 0.0f
} },
68 { .co
= { 1.00f
, 0.0f
, 0.0f
} },
69 { .co
= { -1.00f
, 1.2f
, 0.0f
} },
70 { .co
= { 1.00f
, 1.2f
, 0.0f
} },
71 { .co
= { -0.25f
, 2.0f
, 0.0f
} },
72 { .co
= { 0.25f
, 2.0f
, 0.0f
} }
75 const u32 indices
[] = { 0,1,3, 0,3,2, 2,3,5, 2,5,4 };
77 if( scene
->vertex_count
+ vg_list_size(verts
) > scene
->max_vertices
)
78 vg_fatal_error( "Scene vertex buffer overflow" );
80 if( scene
->indice_count
+ vg_list_size(indices
) > scene
->max_indices
)
81 vg_fatal_error( "Scene index buffer overflow" );
83 scene_vert
*dst_verts
= &scene
->arrvertices
[ scene
->vertex_count
];
84 u32
*dst_indices
= &scene
->arrindices
[ scene
->indice_count
];
86 scene_vert
*ref
= &world
->scene_geo
.arrvertices
[ hit
->tri
[0] ];
88 for( u32 i
=0; i
<vg_list_size(verts
); i
++ )
90 scene_vert
*pvert
= &dst_verts
[ i
],
93 m4x3_mulv( transform
, src
->co
, pvert
->co
);
94 scene_vert_pack_norm( pvert
, transform
[1] );
96 v2_copy( ref
->uv
, pvert
->uv
);
99 for( u32 i
=0; i
<vg_list_size(indices
); i
++ )
100 dst_indices
[i
] = indices
[i
] + scene
->vertex_count
;
102 scene
->vertex_count
+= vg_list_size(verts
);
103 scene
->indice_count
+= vg_list_size(indices
);
107 * Sprinkle foliage models over the map on terrain material
109 static void world_apply_procedural_foliage( world_instance
*world
,
110 scene_context
*scene
,
111 struct world_surface
*mat
)
113 if( vg
.quality_profile
== k_quality_profile_low
)
116 vg_info( "Applying foliage (%u)\n", mat
->info
.pstr_name
);
119 v3_sub( world
->scene_geo
.bbx
[1], world
->scene_geo
.bbx
[0], volume
);
124 float area
= volume
[0]*volume
[2];
125 u32 particles
= 0.08f
* area
;
127 /* TODO: Quasirandom? */
128 vg_info( "Map area: %f. Max particles: %u\n", area
, particles
);
130 for( u32 i
=0; i
<particles
; i
++ ){
132 v3_mul( volume
, (v3f
){ vg_randf64(), 1000.0f
, vg_randf64() }, pos
);
134 v3_add( pos
, world
->scene_geo
.bbx
[0], pos
);
139 if( ray_world( world
, pos
, (v3f
){0.0f
,-1.0f
,0.0f
}, &hit
,
140 k_material_flag_ghosts
)){
141 struct world_surface
*m1
= ray_hit_surface( world
, &hit
);
142 if((hit
.normal
[1] > 0.8f
) && (m1
== mat
) && (hit
.pos
[1] > 0.0f
+10.0f
)){
143 world_gen_add_blob( world
, scene
, &hit
);
149 vg_info( "%d foliage models added\n", count
);
153 void world_unpack_submesh_dynamic( world_instance
*world
,
154 scene_context
*scene
, mdl_submesh
*sm
){
155 if( sm
->flags
& k_submesh_flag_consumed
) return;
158 m4x3_identity( identity
);
159 scene_add_mdl_submesh( scene
, &world
->meta
, sm
, identity
);
161 scene_copy_slice( scene
, sm
);
162 sm
->flags
|= k_submesh_flag_consumed
;
166 * Create the main meshes for the world
168 static void world_gen_generate_meshes( world_instance
*world
){
170 * Compile meshes into the world scenes
172 scene_init( &world
->scene_geo
, 320000, 1200000 );
173 u32 buf_size
= scene_mem_required( &world
->scene_geo
);
174 u8
*buffer
= vg_linear_alloc( world
->heap
, buf_size
);
175 scene_supply_buffer( &world
->scene_geo
, buffer
);
178 m4x3_identity( midentity
);
181 * Generate scene: collidable geometry
182 * ----------------------------------------------------------------
185 vg_info( "Generating collidable geometry\n" );
187 for( u32 i
=0; i
<world
->surface_count
; i
++ ){
188 struct world_surface
*surf
= &world
->surfaces
[ i
];
190 if( surf
->info
.flags
& k_material_flag_collision
)
191 world_add_all_if_material( midentity
, &world
->scene_geo
,
194 scene_copy_slice( &world
->scene_geo
, &surf
->sm_geo
);
195 scene_set_vertex_flags( &world
->scene_geo
,
196 surf
->sm_geo
.vertex_start
,
197 surf
->sm_geo
.vertex_count
,
198 (u16
)(surf
->info
.flags
& 0xffff) );
201 /* compress that bad boy */
202 u32 new_vert_max
= world
->scene_geo
.vertex_count
,
203 new_vert_size
= vg_align8(new_vert_max
*sizeof(scene_vert
)),
204 new_indice_len
= world
->scene_geo
.indice_count
*sizeof(u32
);
206 u32
*src_indices
= world
->scene_geo
.arrindices
,
207 *dst_indices
= (u32
*)(buffer
+ new_vert_size
);
209 memmove( dst_indices
, src_indices
, new_indice_len
);
211 world
->scene_geo
.max_indices
= world
->scene_geo
.indice_count
;
212 world
->scene_geo
.max_vertices
= world
->scene_geo
.vertex_count
;
213 buf_size
= scene_mem_required( &world
->scene_geo
);
215 buffer
= vg_linear_resize( world
->heap
, buffer
, buf_size
);
217 world
->scene_geo
.arrvertices
= (scene_vert
*)(buffer
);
218 world
->scene_geo
.arrindices
= (u32
*)(buffer
+ new_vert_size
);
220 scene_upload_async( &world
->scene_geo
, &world
->mesh_geo
);
222 /* need send off the memory to the gpu before we can create the bvh. */
224 vg_info( "creating bvh\n" );
226 /* setup spacial mapping and rigidbody */
227 world
->geo_bh
= scene_bh_create( world
->heap
, &world
->scene_geo
);
229 v3_zero( world
->rb_geo
.rb
.co
);
230 v3_zero( world
->rb_geo
.rb
.v
);
231 q_identity( world
->rb_geo
.rb
.q
);
232 v3_zero( world
->rb_geo
.rb
.w
);
234 world
->rb_geo
.type
= k_rb_shape_scene
;
235 world
->rb_geo
.inf
.scene
.bh_scene
= world
->geo_bh
;
236 rb_init_object( &world
->rb_geo
);
239 * Generate scene: non-collidable geometry
240 * ----------------------------------------------------------------
242 vg_info( "Generating non-collidable geometry\n" );
244 vg_async_item
*call
= scene_alloc_async( &world
->scene_no_collide
,
245 &world
->mesh_no_collide
,
248 for( u32 i
=0; i
<world
->surface_count
; i
++ ){
249 struct world_surface
*surf
= &world
->surfaces
[ i
];
251 if( !(surf
->info
.flags
& k_material_flag_collision
) ){
252 world_add_all_if_material( midentity
,
253 &world
->scene_no_collide
, &world
->meta
, i
);
256 if( surf
->info
.flags
& k_material_flag_grow_grass
){
257 world_apply_procedural_foliage( world
, &world
->scene_no_collide
,
261 scene_copy_slice( &world
->scene_no_collide
, &surf
->sm_no_collide
);
264 /* unpack traffic models.. TODO: should we just put all these submeshes in a
265 * dynamic models list? and then the actual entitities point to the
266 * models. we only have 2 types at the moment which need dynamic models but
267 * would make sense to do this when/if we have more.
269 for( u32 i
=0; i
<mdl_arrcount( &world
->ent_traffic
); i
++ ){
270 ent_traffic
*vehc
= mdl_arritm( &world
->ent_traffic
, i
);
272 for( u32 j
=0; j
<vehc
->submesh_count
; j
++ ){
273 mdl_submesh
*sm
= mdl_arritm( &world
->meta
.submeshs
,
274 vehc
->submesh_start
+j
);
275 world_unpack_submesh_dynamic( world
, &world
->scene_no_collide
, sm
);
279 /* unpack challenge models */
280 for( u32 i
=0; i
<mdl_arrcount( &world
->ent_objective
); i
++ ){
281 ent_objective
*objective
= mdl_arritm( &world
->ent_objective
, i
);
283 for( u32 j
=0; j
<objective
->submesh_count
; j
++ ){
284 mdl_submesh
*sm
= mdl_arritm( &world
->meta
.submeshs
,
285 objective
->submesh_start
+j
);
286 world_unpack_submesh_dynamic( world
, &world
->scene_no_collide
, sm
);
290 /* unpack gate models */
291 for( u32 i
=0; i
<mdl_arrcount( &world
->ent_gate
); i
++ ){
292 ent_gate
*gate
= mdl_arritm( &world
->ent_gate
, i
);
294 if( !(gate
->flags
& k_ent_gate_custom_mesh
) ) continue;
296 for( u32 j
=0; j
<gate
->submesh_count
; j
++ ){
297 mdl_submesh
*sm
= mdl_arritm( &world
->meta
.submeshs
,
298 gate
->submesh_start
+j
);
299 world_unpack_submesh_dynamic( world
, &world
->scene_no_collide
, sm
);
303 vg_async_dispatch( call
, async_scene_upload
);
306 /* signed distance function for cone */
307 static f32
fsd_cone_infinite( v3f p
, v2f c
){
308 v2f q
= { v2_length( (v2f
){ p
[0], p
[2] } ), -p
[1] };
309 float s
= vg_maxf( 0.0f
, v2_dot( q
, c
) );
315 float d
= v2_length( v0
);
316 return d
* ((q
[0]*c
[1]-q
[1]*c
[0]<0.0f
)?-1.0f
:1.0f
);
319 struct light_indices_upload_info
{
320 world_instance
*world
;
327 * Async reciever to buffer light index data
329 static void async_upload_light_indices( void *payload
, u32 size
){
330 struct light_indices_upload_info
*info
= payload
;
332 glGenTextures( 1, &info
->world
->tex_light_cubes
);
333 glBindTexture( GL_TEXTURE_3D
, info
->world
->tex_light_cubes
);
334 glTexImage3D( GL_TEXTURE_3D
, 0, GL_RG32UI
,
335 info
->count
[0], info
->count
[1], info
->count
[2],
336 0, GL_RG_INTEGER
, GL_UNSIGNED_INT
, info
->data
);
337 glTexParameteri( GL_TEXTURE_3D
, GL_TEXTURE_MIN_FILTER
, GL_NEAREST
);
338 glTexParameteri( GL_TEXTURE_3D
, GL_TEXTURE_MAG_FILTER
, GL_NEAREST
);
342 * Computes light indices for world
344 static void world_gen_compute_light_indices( world_instance
*world
){
346 v3f cubes_min
, cubes_max
;
347 v3_muls( world
->scene_geo
.bbx
[0], 1.0f
/k_world_light_cube_size
, cubes_min
);
348 v3_muls( world
->scene_geo
.bbx
[1], 1.0f
/k_world_light_cube_size
, cubes_max
);
350 v3_sub( cubes_min
, (v3f
){ 0.5f
, 0.5f
, 0.5f
}, cubes_min
);
351 v3_add( cubes_max
, (v3f
){ 0.5f
, 0.5f
, 0.5f
}, cubes_max
);
353 v3_floor( cubes_min
, cubes_min
);
354 v3_floor( cubes_max
, cubes_max
);
356 v3i icubes_min
, icubes_max
;
358 for( int i
=0; i
<3; i
++ ){
359 icubes_min
[i
] = cubes_min
[i
];
360 icubes_max
[i
] = cubes_max
[i
];
366 v3i_sub( icubes_max
, icubes_min
, icubes_count
);
368 for( int i
=0; i
<3; i
++ ){
369 int clamped_count
= VG_MIN( 128, icubes_count
[i
]+1 );
370 float clamped_max
= icubes_min
[i
] + clamped_count
,
371 max
= icubes_min
[i
] + icubes_count
[i
]+1;
373 icubes_count
[i
] = clamped_count
;
374 cube_size
[i
] = (max
/ clamped_max
) * k_world_light_cube_size
;
375 cubes_max
[i
] = clamped_max
;
378 v3_mul( cubes_min
, cube_size
, cubes_min
);
379 v3_mul( cubes_max
, cube_size
, cubes_max
);
381 for( int i
=0; i
<3; i
++ ){
382 float range
= cubes_max
[i
]-cubes_min
[i
];
383 world
->ub_lighting
.g_cube_inv_range
[i
] = 1.0f
/ range
;
384 world
->ub_lighting
.g_cube_inv_range
[i
] *= (float)icubes_count
[i
];
386 vg_info( "cubes[%d]: %d\n", i
, icubes_count
[i
] );
389 int total_cubes
= icubes_count
[0]*icubes_count
[1]*icubes_count
[2];
391 u32 data_size
= vg_align8(total_cubes
*sizeof(u32
)*2),
392 hdr_size
= vg_align8(sizeof(struct light_indices_upload_info
));
394 vg_async_item
*call
= vg_async_alloc( data_size
+ hdr_size
);
395 struct light_indices_upload_info
*info
= call
->payload
;
396 info
->data
= ((u8
*)call
->payload
) + hdr_size
;
398 u32
*cubes_index
= info
->data
;
400 for( int i
=0; i
<3; i
++ )
401 info
->count
[i
] = icubes_count
[i
];
403 vg_info( "Computing light cubes (%d) [%f %f %f] -> [%f %f %f]\n",
404 total_cubes
, cubes_min
[0], -cubes_min
[2], cubes_min
[1],
405 cubes_max
[0], -cubes_max
[2], cubes_max
[1] );
406 v3_copy( cubes_min
, world
->ub_lighting
.g_cube_min
);
408 float bound_radius
= v3_length( cube_size
);
410 for( int iz
= 0; iz
<icubes_count
[2]; iz
++ ){
411 for( int iy
= 0; iy
<icubes_count
[1]; iy
++ ){
412 for( int ix
= 0; ix
<icubes_count
[0]; ix
++ ){
414 v3_div( (v3f
){ ix
, iy
, iz
}, world
->ub_lighting
.g_cube_inv_range
,
416 v3_div( (v3f
){ ix
+1, iy
+1, iz
+1 },
417 world
->ub_lighting
.g_cube_inv_range
,
420 v3_add( bbx
[0], world
->ub_lighting
.g_cube_min
, bbx
[0] );
421 v3_add( bbx
[1], world
->ub_lighting
.g_cube_min
, bbx
[1] );
424 v3_add( bbx
[0], bbx
[1], center
);
425 v3_muls( center
, 0.5f
, center
);
427 u32 indices
[6] = { 0, 0, 0, 0, 0, 0 };
430 float influences
[6] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
431 const int N
= vg_list_size( influences
);
433 for( u32 j
=0; j
<mdl_arrcount(&world
->ent_light
); j
++ ){
434 ent_light
*light
= mdl_arritm( &world
->ent_light
, j
);
436 closest_point_aabb( light
->transform
.co
, bbx
, closest
);
438 f32 dist2
= v3_dist2( closest
, light
->transform
.co
);
440 if( dist2
> light
->range
*light
->range
)
443 f32 dist
= sqrtf(dist2
),
444 influence
= 1.0f
/(dist
+1.0f
);
446 if( light
->type
== k_light_type_spot
){
448 m4x3_mulv( light
->inverse_world
, center
, local
);
450 float r
= fsd_cone_infinite( local
, light
->angle_sin_cos
);
452 if( r
> bound_radius
)
457 for( int k
=best_pos
-1; k
>=0; k
-- )
458 if( influence
> influences
[k
] )
462 for( int k
=N
-1; k
>best_pos
; k
-- ){
463 influences
[k
] = influences
[k
-1];
464 indices
[k
] = indices
[k
-1];
467 influences
[best_pos
] = influence
;
468 indices
[best_pos
] = j
;
472 for( int j
=0; j
<N
; j
++ )
473 if( influences
[j
] > 0.0f
)
476 int base_index
= iz
* (icubes_count
[0]*icubes_count
[1]) +
477 iy
* (icubes_count
[0]) +
480 int lower_count
= VG_MIN( 3, count
);
481 u32 packed_index_lower
= lower_count
;
482 packed_index_lower
|= indices
[0]<<2;
483 packed_index_lower
|= indices
[1]<<12;
484 packed_index_lower
|= indices
[2]<<22;
486 int upper_count
= VG_MAX( 0, count
- lower_count
);
487 u32 packed_index_upper
= upper_count
;
488 packed_index_upper
|= indices
[3]<<2;
489 packed_index_upper
|= indices
[4]<<12;
490 packed_index_upper
|= indices
[5]<<22;
492 cubes_index
[ base_index
*2 + 0 ] = packed_index_lower
;
493 cubes_index
[ base_index
*2 + 1 ] = packed_index_upper
;
498 vg_async_dispatch( call
, async_upload_light_indices
);
502 * Rendering pass needed to complete the world
504 static void async_world_postprocess( void *payload
, u32 _size
){
505 /* create scene lighting buffer */
506 world_instance
*world
= payload
;
508 u32 size
= VG_MAX(mdl_arrcount(&world
->ent_light
),1) * sizeof(float)*12;
509 vg_info( "Upload %ubytes (lighting)\n", size
);
511 glGenBuffers( 1, &world
->tbo_light_entities
);
512 glBindBuffer( GL_TEXTURE_BUFFER
, world
->tbo_light_entities
);
513 glBufferData( GL_TEXTURE_BUFFER
, size
, NULL
, GL_DYNAMIC_DRAW
);
517 * colour position direction (spots)
518 * | . . . . | . . . . | . . . . |
519 * | Re Ge Be Night | Xco Yco Zco Range | Dx Dy Dz Da |
523 v4f
*light_dst
= glMapBuffer( GL_TEXTURE_BUFFER
, GL_WRITE_ONLY
);
524 for( u32 i
=0; i
<mdl_arrcount(&world
->ent_light
); i
++ ){
525 ent_light
*light
= mdl_arritm( &world
->ent_light
, i
);
528 v3_muls( light
->colour
, light
->colour
[3] * 2.0f
, light_dst
[i
*3+0] );
529 light_dst
[i
*3+0][3] = 2.0f
;
531 if( !light
->daytime
){
532 u32 hash
= (i
* 29986577u) & 0xffu
;
533 float switch_on
= hash
;
534 switch_on
*= (1.0f
/255.0f
);
536 light_dst
[i
*3+0][3] = 0.44f
+ switch_on
* 0.015f
;
539 /* position + 1/range^2 */
540 v3_copy( light
->transform
.co
, light_dst
[i
*3+1] );
541 light_dst
[i
*3+1][3] = 1.0f
/(light
->range
*light
->range
);
543 /* direction + angle */
544 q_mulv( light
->transform
.q
, (v3f
){0.0f
,-1.0f
,0.0f
}, light_dst
[i
*3+2]);
545 light_dst
[i
*3+2][3] = cosf( light
->angle
);
548 glUnmapBuffer( GL_TEXTURE_BUFFER
);
550 glGenTextures( 1, &world
->tex_light_entities
);
551 glBindTexture( GL_TEXTURE_BUFFER
, world
->tex_light_entities
);
552 glTexBuffer( GL_TEXTURE_BUFFER
, GL_RGBA32F
, world
->tbo_light_entities
);
554 /* Upload lighting uniform buffer */
555 if( world
->water
.enabled
)
556 v4_copy( world
->water
.plane
, world
->ub_lighting
.g_water_plane
);
559 v3f
*bounds
= world
->scene_geo
.bbx
;
561 info_vec
[0] = bounds
[0][0];
562 info_vec
[1] = bounds
[0][2];
563 info_vec
[2] = 1.0f
/ (bounds
[1][0]-bounds
[0][0]);
564 info_vec
[3] = 1.0f
/ (bounds
[1][2]-bounds
[0][2]);
565 v4_copy( info_vec
, world
->ub_lighting
.g_depth_bounds
);
568 * Rendering the depth map
573 v3_sub( world
->scene_geo
.bbx
[1], world
->scene_geo
.bbx
[0], extent
);
575 float fl
= world
->scene_geo
.bbx
[0][0],
576 fr
= world
->scene_geo
.bbx
[1][0],
577 fb
= world
->scene_geo
.bbx
[0][2],
578 ft
= world
->scene_geo
.bbx
[1][2],
582 m4x4_zero( ortho
.mtx
.p
);
583 ortho
.mtx
.p
[0][0] = 2.0f
* rl
;
584 ortho
.mtx
.p
[2][1] = 2.0f
* tb
;
585 ortho
.mtx
.p
[3][0] = (fr
+ fl
) * -rl
;
586 ortho
.mtx
.p
[3][1] = (ft
+ fb
) * -tb
;
587 ortho
.mtx
.p
[3][3] = 1.0f
;
588 m4x3_identity( ortho
.transform
);
589 camera_update_view( &ortho
);
590 camera_finalize( &ortho
);
592 glDisable(GL_DEPTH_TEST
);
594 glDisable(GL_CULL_FACE
);
595 render_fb_bind( &world
->heightmap
, 0 );
596 shader_blitcolour_use();
597 shader_blitcolour_uColour( (v4f
){-9999.0f
,-9999.0f
,-9999.0f
,-9999.0f
} );
601 glBlendFunc(GL_ONE
, GL_ONE
);
602 glBlendEquation(GL_MAX
);
604 render_world_position( world
, &ortho
);
606 glEnable(GL_DEPTH_TEST
);
607 glBindFramebuffer( GL_FRAMEBUFFER
, 0 );
609 /* upload full buffer */
610 glBindBuffer( GL_UNIFORM_BUFFER
, world
->ubo_lighting
);
611 glBufferSubData( GL_UNIFORM_BUFFER
, 0,
612 sizeof(struct ub_world_lighting
), &world
->ub_lighting
);
617 for( u32 i
=0; i
<mdl_arrcount(&world
->ent_cubemap
); i
++ ){
618 ent_cubemap
*cm
= mdl_arritm(&world
->ent_cubemap
,i
);
620 glGenTextures( 1, &cm
->texture_id
);
621 glBindTexture( GL_TEXTURE_CUBE_MAP
, cm
->texture_id
);
622 glTexParameteri(GL_TEXTURE_CUBE_MAP
, GL_TEXTURE_MIN_FILTER
, GL_LINEAR
);
623 glTexParameteri(GL_TEXTURE_CUBE_MAP
, GL_TEXTURE_MAG_FILTER
, GL_LINEAR
);
624 glTexParameteri(GL_TEXTURE_CUBE_MAP
, GL_TEXTURE_WRAP_S
, GL_CLAMP_TO_EDGE
);
625 glTexParameteri(GL_TEXTURE_CUBE_MAP
, GL_TEXTURE_WRAP_T
, GL_CLAMP_TO_EDGE
);
626 glTexParameteri(GL_TEXTURE_CUBE_MAP
, GL_TEXTURE_WRAP_R
, GL_CLAMP_TO_EDGE
);
628 for( u32 j
=0; j
<6; j
++ ) {
629 glTexImage2D( GL_TEXTURE_CUBE_MAP_POSITIVE_X
+ j
, 0, GL_RGB
,
630 WORLD_CUBEMAP_RES
, WORLD_CUBEMAP_RES
,
631 0, GL_RGB
, GL_UNSIGNED_BYTE
, NULL
);
634 glGenFramebuffers( 1, &cm
->framebuffer_id
);
635 glBindFramebuffer( GL_FRAMEBUFFER
, cm
->framebuffer_id
);
636 glGenRenderbuffers(1, &cm
->renderbuffer_id
);
637 glBindRenderbuffer( GL_RENDERBUFFER
, cm
->renderbuffer_id
);
638 glRenderbufferStorage( GL_RENDERBUFFER
, GL_DEPTH_COMPONENT24
,
639 WORLD_CUBEMAP_RES
, WORLD_CUBEMAP_RES
);
641 glFramebufferTexture2D( GL_FRAMEBUFFER
, GL_COLOR_ATTACHMENT0
,
642 GL_TEXTURE_CUBE_MAP_POSITIVE_X
, cm
->texture_id
, 0 );
643 glFramebufferRenderbuffer( GL_FRAMEBUFFER
, GL_DEPTH_ATTACHMENT
,
644 GL_RENDERBUFFER
, cm
->renderbuffer_id
);
646 glFramebufferTexture2D( GL_FRAMEBUFFER
, GL_COLOR_ATTACHMENT0
,
647 GL_TEXTURE_CUBE_MAP_POSITIVE_X
, cm
->texture_id
, 0 );
649 if( glCheckFramebufferStatus(GL_FRAMEBUFFER
) != GL_FRAMEBUFFER_COMPLETE
){
650 vg_error( "Cubemap framebuffer incomplete.\n" );
654 glBindFramebuffer( GL_FRAMEBUFFER
, 0 );
655 world
->status
= k_world_status_loaded
;
658 /* Loads textures from the pack file */
659 static void world_gen_load_surfaces( world_instance
*world
){
660 vg_info( "Loading textures\n" );
661 world
->texture_count
= 0;
663 world
->texture_count
= world
->meta
.textures
.count
+1;
664 world
->textures
= vg_linear_alloc( world
->heap
,
665 vg_align8(sizeof(GLuint
)*world
->texture_count
) );
667 vg_tex2d_replace_with_error( &world
->textures
[0] );
669 for( u32 i
=0; i
<mdl_arrcount(&world
->meta
.textures
); i
++ ){
670 mdl_texture
*tex
= mdl_arritm( &world
->meta
.textures
, i
);
672 if( !tex
->file
.pack_size
){
673 vg_fatal_error( "World models must have packed textures!" );
676 vg_linear_clear( vg_mem
.scratch
);
677 void *src_data
= vg_linear_alloc( vg_mem
.scratch
,
678 tex
->file
.pack_size
);
679 mdl_fread_pack_file( &world
->meta
, &tex
->file
, src_data
);
681 vg_tex2d_load_qoi_async( src_data
, tex
->file
.pack_size
,
682 VG_TEX2D_NEAREST
|VG_TEX2D_REPEAT
,
683 &world
->textures
[i
+1] );
686 vg_info( "Loading materials\n" );
688 world
->surface_count
= world
->meta
.materials
.count
+1;
689 world
->surfaces
= vg_linear_alloc( world
->heap
,
690 vg_align8(sizeof(struct world_surface
)*world
->surface_count
) );
693 struct world_surface
*errmat
= &world
->surfaces
[0];
694 memset( errmat
, 0, sizeof(struct world_surface
) );
696 for( u32 i
=0; i
<mdl_arrcount(&world
->meta
.materials
); i
++ ){
697 world
->surfaces
[i
+1].info
=
698 *(mdl_material
*)mdl_arritm( &world
->meta
.materials
, i
);
702 #endif /* WORLD_GEN_C */