6 typedef struct glmesh glmesh
;
8 typedef struct mdl_vert mdl_vert
;
9 typedef struct mdl_submesh mdl_submesh
;
10 typedef struct mdl_material mdl_material
;
11 typedef struct mdl_node mdl_node
;
12 typedef struct mdl_header mdl_header
;
13 typedef struct mdl_animation mdl_animation
;
14 typedef struct mdl_keyframe mdl_keyframe
;
16 #define MDL_SIZE_MAX 0x1000000
17 #define MDL_VERT_MAX 1000000
18 #define MDL_INDICE_MAX 1000000
19 #define MDL_MATERIAL_MAX 32
20 #define MDL_NODE_MAX 4000
21 #define MDL_SUBMESH_MAX 8000
22 #define MDL_STRING_LENGTH_MAX 64
58 union{ u32 submesh_start
, sub_uid
; };
87 u32 identifier
, version
, file_length
;
89 u32 vertex_count
, vertex_offset
,
90 indice_count
, indice_offset
,
91 submesh_count
, submesh_offset
,
92 material_count
, material_offset
,
93 node_count
, node_offset
,
94 anim_count
, anim_offset
,
95 strings_offset
, entdata_offset
, animdata_offset
;
99 * Entity data structures
102 struct classtype_block
107 struct classtype_gate
113 struct classtype_spawn
118 struct classtype_water
123 struct classtype_car_path
128 struct classtype_instance
133 struct classtype_capsule
135 float height
, radius
;
138 struct classtype_route_node
143 struct classtype_route
149 struct classtype_bone
161 struct classtype_skeleton
170 struct classtype_skin
178 * Simple mesh interface for OpenGL
183 GLuint vao
, vbo
, ebo
;
187 static void mesh_upload( glmesh
*mesh
,
188 mdl_vert
*verts
, u32 vert_count
,
189 u32
*indices
, u32 indice_count
)
191 glGenVertexArrays( 1, &mesh
->vao
);
192 glGenBuffers( 1, &mesh
->vbo
);
193 glGenBuffers( 1, &mesh
->ebo
);
194 glBindVertexArray( mesh
->vao
);
196 size_t stride
= sizeof(mdl_vert
);
198 glBindBuffer( GL_ARRAY_BUFFER
, mesh
->vbo
);
199 glBufferData( GL_ARRAY_BUFFER
, vert_count
*stride
, verts
, GL_STATIC_DRAW
);
201 glBindVertexArray( mesh
->vao
);
202 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, mesh
->ebo
);
203 glBufferData( GL_ELEMENT_ARRAY_BUFFER
, indice_count
*sizeof(u32
),
204 indices
, GL_STATIC_DRAW
);
207 glVertexAttribPointer( 0, 3, GL_FLOAT
, GL_FALSE
, stride
, (void*)0 );
208 glEnableVertexAttribArray( 0 );
211 glVertexAttribPointer( 1, 3, GL_FLOAT
, GL_FALSE
,
212 stride
, (void *)offsetof(mdl_vert
, norm
) );
213 glEnableVertexAttribArray( 1 );
216 glVertexAttribPointer( 2, 2, GL_FLOAT
, GL_FALSE
,
217 stride
, (void *)offsetof(mdl_vert
, uv
) );
218 glEnableVertexAttribArray( 2 );
221 glVertexAttribPointer( 3, 4, GL_UNSIGNED_BYTE
, GL_TRUE
,
222 stride
, (void *)offsetof(mdl_vert
, colour
) );
223 glEnableVertexAttribArray( 3 );
226 glVertexAttribPointer( 4, 4, GL_UNSIGNED_SHORT
, GL_TRUE
,
227 stride
, (void *)offsetof(mdl_vert
, weights
) );
228 glEnableVertexAttribArray( 4 );
231 glVertexAttribIPointer( 5, 4, GL_UNSIGNED_BYTE
,
232 stride
, (void *)offsetof(mdl_vert
, groups
) );
233 glEnableVertexAttribArray( 5 );
237 mesh
->indice_count
= indice_count
;
240 static void mesh_bind( glmesh
*mesh
)
242 glBindVertexArray( mesh
->vao
);
245 static void mesh_drawn( u32 start
, u32 count
)
247 glDrawElements( GL_TRIANGLES
, count
, GL_UNSIGNED_INT
,
248 (void *)(start
*sizeof(u32
)) );
251 static void mesh_draw( glmesh
*mesh
)
253 mesh_drawn( 0, mesh
->indice_count
);
256 static void mesh_free( glmesh
*mesh
)
258 glDeleteVertexArrays( 1, &mesh
->vao
);
259 glDeleteBuffers( 1, &mesh
->ebo
);
260 glDeleteBuffers( 1, &mesh
->vbo
);
265 * Model implementation
268 static mdl_header
*mdl_load( const char *path
)
271 mdl_header
*header
= vg_asset_read_s( path
, &size
);
274 * Check file is valid
278 vg_error( "Could not open '%s'\n", path
);
282 if( size
< sizeof(mdl_header
) )
285 vg_error( "Invalid file '%s' (too small for header)\n", path
);
289 if( header
->file_length
!= size
)
291 vg_error( "Invalid file '%s'"
292 "(wrong .file_length, %ub != real file size %ub)\n",
293 path
, header
->file_length
, size
);
299 * Validate offsets and memory sections, to ensure all arrays are in-bounds,
300 * and that they do not overlap.
306 u32 count
, max_count
, size
, offset
;
311 header
->vertex_count
, MDL_VERT_MAX
,
312 sizeof(mdl_vert
), header
->vertex_offset
316 header
->indice_count
, MDL_INDICE_MAX
,
317 sizeof(u32
), header
->indice_offset
321 header
->submesh_count
, MDL_SUBMESH_MAX
,
322 sizeof(mdl_submesh
), header
->submesh_offset
326 header
->material_count
, MDL_MATERIAL_MAX
,
327 sizeof(mdl_material
), header
->material_offset
331 header
->node_count
, MDL_NODE_MAX
,
332 sizeof(mdl_node
), header
->node_count
336 for( int i
=0; i
<vg_list_size(regions
); i
++ )
338 struct memregion
*ri
= ®ions
[i
];
343 if( ri
->count
> ri
->max_count
)
346 vg_error( "'%s': '%s' buffer exceeds the maximum (%u/%u)\n",
347 path
, ri
->desc
, ri
->count
, ri
->max_count
);
351 if( ri
->offset
>= header
->file_length
)
354 vg_error( "'%s': '%s' buffer offset is out of range\n",
359 if( ri
->offset
+ ri
->size
*ri
->count
> header
->file_length
)
362 vg_error( "'%s': '%s' buffer size is out of range\n",
367 for( int j
=0; j
<vg_list_size(regions
); j
++ )
369 struct memregion
*rj
= ®ions
[j
];
373 if( ri
->offset
>= rj
->offset
&&
374 (ri
->offset
+ri
->size
*ri
->count
< rj
->offset
+rj
->size
*rj
->count
))
377 vg_error( "'%s': '%s' buffer overlaps '%s'\n",
378 path
, ri
->desc
, rj
->desc
);
385 * Pointer validation TODO(workshop)
389 * strings TODO(workshop)
395 static void *mdl_baseptr( mdl_header
*mdl
, u32 offset
)
397 return (void *)mdl
+ offset
;
400 static const char *mdl_pstr( mdl_header
*mdl
, u32 pstr
)
402 return (const char *)(mdl_baseptr( mdl
, mdl
->strings_offset
)) + pstr
;
405 static mdl_node
*mdl_node_from_id( mdl_header
*mdl
, u32 id
)
407 return ((mdl_node
*)mdl_baseptr( mdl
, mdl
->node_offset
)) + id
;
410 static mdl_node
*mdl_node_from_name( mdl_header
*mdl
, const char *name
)
412 for( int i
=0; i
<mdl
->node_count
; i
++ )
414 mdl_node
*pnode
= mdl_node_from_id( mdl
, i
);
416 if( !strcmp( name
, mdl_pstr( mdl
, pnode
->pstr_name
)) )
423 static mdl_submesh
*mdl_submesh_from_id( mdl_header
*mdl
, u32 id
)
425 if( id
>= mdl
->submesh_count
)
428 return ((mdl_submesh
*)mdl_baseptr( mdl
, mdl
->submesh_offset
)) + id
;
431 static mdl_submesh
*mdl_node_submesh( mdl_header
*mdl
, mdl_node
*node
, u32 i
)
433 if( i
>= node
->submesh_count
)
436 return mdl_submesh_from_id( mdl
, node
->submesh_start
+i
);
439 static u32
*mdl_submesh_indices( mdl_header
*mdl
, mdl_submesh
*sm
)
441 return ((u32
*)mdl_baseptr( mdl
, mdl
->indice_offset
)) + sm
->indice_start
;
444 static mdl_vert
*mdl_submesh_vertices( mdl_header
*mdl
, mdl_submesh
*sm
)
446 return ((mdl_vert
*)mdl_baseptr(mdl
,mdl
->vertex_offset
)) + sm
->vertex_start
;
449 static mdl_material
*mdl_material_from_id( mdl_header
*mdl
, u32 id
)
451 return ((mdl_material
*)mdl_baseptr(mdl
,mdl
->material_offset
)) + id
;
454 static mdl_animation
*mdl_animation_from_id( mdl_header
*mdl
, u32 id
)
456 return ((mdl_animation
*)mdl_baseptr(mdl
,mdl
->anim_offset
)) + id
;
459 static void mdl_node_transform( mdl_node
*pnode
, m4x3f transform
)
461 q_m3x3( pnode
->q
, transform
);
462 v3_muls( transform
[0], pnode
->s
[0], transform
[0] );
463 v3_muls( transform
[1], pnode
->s
[1], transform
[1] );
464 v3_muls( transform
[2], pnode
->s
[2], transform
[2] );
465 v3_copy( pnode
->co
, transform
[3] );
468 static void mdl_unpack_submesh( mdl_header
*mdl
, glmesh
*mesh
, mdl_submesh
*sm
)
470 mesh_upload( mesh
, mdl_submesh_vertices( mdl
, sm
), sm
->vertex_count
,
471 mdl_submesh_indices( mdl
, sm
), sm
->indice_count
);
474 static void mdl_unpack_glmesh( mdl_header
*mdl
, glmesh
*mesh
)
476 u32 offset
= mdl_submesh_from_id( mdl
, 0 )->vertex_count
;
478 for( int i
=1; i
< mdl
->submesh_count
; i
++ )
480 mdl_submesh
*sm
= mdl_submesh_from_id( mdl
, i
);
481 u32
*indices
= mdl_submesh_indices( mdl
, sm
);
483 for( u32 j
=0; j
<sm
->indice_count
; j
++ )
484 indices
[j
] += offset
;
486 offset
+= sm
->vertex_count
;
489 mdl_vert
*vertex_base
= mdl_baseptr( mdl
, mdl
->vertex_offset
);
490 u32
*indice_base
= mdl_baseptr( mdl
, mdl
->indice_offset
);
492 mesh_upload( mesh
, vertex_base
, mdl
->vertex_count
,
493 indice_base
, mdl
->indice_count
);
496 static void mdl_draw_submesh( mdl_submesh
*sm
)
498 mesh_drawn( sm
->indice_start
, sm
->indice_count
);
501 static void *mdl_get_entdata( mdl_header
*mdl
, mdl_node
*pnode
)
503 return mdl_baseptr( mdl
, mdl
->entdata_offset
) + pnode
->offset
;
506 static mdl_keyframe
*mdl_get_animdata( mdl_header
*mdl
, mdl_animation
*anim
)
508 return mdl_baseptr( mdl
, mdl
->animdata_offset
) + anim
->offset
;
511 static void mdl_link_materials( mdl_header
*root
, mdl_header
*child
)
513 u32 lookup
[MDL_MATERIAL_MAX
];
515 for( int i
=0; i
<child
->material_count
; i
++ )
517 mdl_material
*mi
= mdl_material_from_id( child
, i
);
518 const char *si
= mdl_pstr( child
, mi
->pstr_name
);
522 for( int j
=0; j
<root
->material_count
; j
++ )
524 mdl_material
*mj
= mdl_material_from_id( root
, j
);
525 const char *sj
= mdl_pstr( root
, mj
->pstr_name
);
527 if( !strcmp( si
, sj
) )
534 if( lookup
[i
] == 0 && i
!= 0 )
536 vg_warn( "Could not link material '%s' (not present in root model)\n",
541 for( int i
=0; i
<child
->submesh_count
; i
++ )
543 mdl_submesh
*sm
= mdl_submesh_from_id( child
, i
);
544 sm
->material_id
= lookup
[sm
->material_id
];