6 typedef struct model model
;
7 typedef struct glmesh glmesh
;
8 typedef struct submodel submodel
;
9 typedef struct model_vert model_vert
;
10 typedef struct scene scene
;
11 typedef struct sdf_primative sdf_primative
;
12 typedef enum esdf_type esdf_type
;
26 v4f origin
; /* xyz, yaw */
72 #define VERTEX_STANDARD_ATTRIBUTES \
73 "layout (location=0) in vec3 a_co;" \
74 "layout (location=1) in vec3 a_norm;" \
75 "layout (location=2) in vec4 a_colour;" \
76 "layout (location=3) in vec2 a_uv;"
78 static void mesh_upload( glmesh
*mesh
,
79 model_vert
*verts
, u32 vert_count
,
80 u32
*indices
, u32 indice_count
)
82 glGenVertexArrays( 1, &mesh
->vao
);
83 glGenBuffers( 1, &mesh
->vbo
);
84 glGenBuffers( 1, &mesh
->ebo
);
85 glBindVertexArray( mesh
->vao
);
87 glBindBuffer( GL_ARRAY_BUFFER
, mesh
->vbo
);
88 glBufferData( GL_ARRAY_BUFFER
, vert_count
*sizeof(model_vert
),
89 verts
, GL_STATIC_DRAW
);
91 glBindVertexArray( mesh
->vao
);
92 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, mesh
->ebo
);
93 glBufferData( GL_ELEMENT_ARRAY_BUFFER
, indice_count
*sizeof(u32
),
94 indices
, GL_STATIC_DRAW
);
96 glVertexAttribPointer( 0, 3, GL_FLOAT
, GL_FALSE
,
97 sizeof(model_vert
), (void*)0 );
98 glEnableVertexAttribArray( 0 );
100 glVertexAttribPointer( 1, 3, GL_FLOAT
, GL_FALSE
,
101 sizeof(model_vert
), (void *)offsetof(model_vert
, norm
) );
102 glEnableVertexAttribArray( 1 );
104 glVertexAttribPointer( 2, 4, GL_FLOAT
, GL_FALSE
,
105 sizeof(model_vert
), (void *)offsetof(model_vert
, colour
) );
106 glEnableVertexAttribArray( 2 );
108 glVertexAttribPointer( 3, 2, GL_FLOAT
, GL_FALSE
,
109 sizeof(model_vert
), (void *)offsetof(model_vert
, uv
) );
110 glEnableVertexAttribArray( 3 );
113 mesh
->indice_count
= indice_count
;
116 static void mesh_bind( glmesh
*mesh
)
118 glBindVertexArray( mesh
->vao
);
121 static void mesh_drawn( u32 start
, u32 count
)
123 glDrawElements( GL_TRIANGLES
, count
, GL_UNSIGNED_INT
,
124 (void *)(start
*sizeof(u32
)) );
127 static void mesh_draw( glmesh
*mesh
)
129 mesh_drawn( 0, mesh
->indice_count
);
133 * Helper functions for file offsets
135 static submodel
*model_get_submodel( model
*mdl
, int id
)
137 return ((submodel
*)(mdl
+1)) + id
;
140 static model_vert
*model_vertex_base( model
*mdl
)
142 return (model_vert
*)model_get_submodel( mdl
, mdl
->layer_count
);
145 static u32
*model_indice_base( model
*mdl
)
147 return (u32
*)(model_vertex_base( mdl
) + mdl
->vertex_count
);
150 static model_vert
*submodel_vert_data( model
*mdl
, submodel
*sub
)
152 return model_vertex_base(mdl
) + sub
->vertex_start
;
155 static u32
*submodel_indice_data( model
*mdl
, submodel
*sub
)
157 return model_indice_base(mdl
) + sub
->indice_start
;
160 static submodel
*submodel_get( model
*mdl
, const char *name
)
162 for( int i
=0; i
<mdl
->layer_count
; i
++ )
164 submodel
*pmdl
=model_get_submodel(mdl
,i
);
166 if( !strcmp( pmdl
->name
, name
) )
173 static void submodel_draw( submodel
*sm
)
175 mesh_drawn( sm
->indice_start
, sm
->indice_count
);
178 static void model_unpack( model
*model
, glmesh
*mesh
)
180 u32 offset
= model_get_submodel( model
, 0 )->vertex_count
;
182 for( int i
=1; i
<model
->layer_count
; i
++ )
184 submodel
*sm
= model_get_submodel( model
, i
);
185 u32
*indices
= submodel_indice_data( model
, sm
);
187 for( u32 j
=0; j
<sm
->indice_count
; j
++ )
188 indices
[j
] += offset
;
190 offset
+= sm
->vertex_count
;
193 mesh_upload( mesh
, model_vertex_base( model
), model
->vertex_count
,
194 model_indice_base( model
), model
->indice_count
);