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 sdf_primative sdf_primative
;
11 typedef enum esdf_type esdf_type
;
25 v4f origin
; /* xyz, yaw */
71 #define VERTEX_STANDARD_ATTRIBUTES \
72 "layout (location=0) in vec3 a_co;" \
73 "layout (location=1) in vec3 a_norm;" \
74 "layout (location=2) in vec4 a_colour;" \
75 "layout (location=3) in vec2 a_uv;"
77 static void mesh_upload( glmesh
*mesh
,
78 model_vert
*verts
, u32 vert_count
,
79 u32
*indices
, u32 indice_count
)
81 glGenVertexArrays( 1, &mesh
->vao
);
82 glGenBuffers( 1, &mesh
->vbo
);
83 glGenBuffers( 1, &mesh
->ebo
);
84 glBindVertexArray( mesh
->vao
);
86 glBindBuffer( GL_ARRAY_BUFFER
, mesh
->vbo
);
87 glBufferData( GL_ARRAY_BUFFER
, vert_count
*sizeof(model_vert
),
88 verts
, GL_STATIC_DRAW
);
90 glBindVertexArray( mesh
->vao
);
91 glBindBuffer( GL_ELEMENT_ARRAY_BUFFER
, mesh
->ebo
);
92 glBufferData( GL_ELEMENT_ARRAY_BUFFER
, indice_count
*sizeof(u32
),
93 indices
, GL_STATIC_DRAW
);
95 glVertexAttribPointer( 0, 3, GL_FLOAT
, GL_FALSE
,
96 sizeof(model_vert
), (void*)0 );
97 glEnableVertexAttribArray( 0 );
99 glVertexAttribPointer( 1, 3, GL_FLOAT
, GL_FALSE
,
100 sizeof(model_vert
), (void *)offsetof(model_vert
, norm
) );
101 glEnableVertexAttribArray( 1 );
103 glVertexAttribPointer( 2, 4, GL_FLOAT
, GL_FALSE
,
104 sizeof(model_vert
), (void *)offsetof(model_vert
, colour
) );
105 glEnableVertexAttribArray( 2 );
107 glVertexAttribPointer( 3, 2, GL_FLOAT
, GL_FALSE
,
108 sizeof(model_vert
), (void *)offsetof(model_vert
, uv
) );
109 glEnableVertexAttribArray( 3 );
112 mesh
->indice_count
= indice_count
;
115 static void mesh_bind( glmesh
*mesh
)
117 glBindVertexArray( mesh
->vao
);
120 static void mesh_drawn( u32 start
, u32 count
)
122 glDrawElements( GL_TRIANGLES
, count
, GL_UNSIGNED_INT
,
123 (void *)(start
*sizeof(u32
)) );
126 static void mesh_draw( glmesh
*mesh
)
128 mesh_drawn( 0, mesh
->indice_count
);
132 * Helper functions for file offsets
134 static submodel
*model_get_submodel( model
*mdl
, int id
)
136 return ((submodel
*)(mdl
+1)) + id
;
139 static model_vert
*model_vertex_base( model
*mdl
)
141 return (model_vert
*)model_get_submodel( mdl
, mdl
->layer_count
);
144 static u32
*model_indice_base( model
*mdl
)
146 return (u32
*)(model_vertex_base( mdl
) + mdl
->vertex_count
);
149 static model_vert
*submodel_vert_data( model
*mdl
, submodel
*sub
)
151 return model_vertex_base(mdl
) + sub
->vertex_start
;
154 static u32
*submodel_indice_data( model
*mdl
, submodel
*sub
)
156 return model_indice_base(mdl
) + sub
->indice_start
;
159 static submodel
*submodel_get( model
*mdl
, const char *name
)
161 for( int i
=0; i
<mdl
->layer_count
; i
++ )
163 submodel
*pmdl
=model_get_submodel(mdl
,i
);
165 if( !strcmp( pmdl
->name
, name
) )
172 static void submodel_draw( submodel
*sm
)
174 mesh_drawn( sm
->indice_start
, sm
->indice_count
);
177 static void model_unpack( model
*model
, glmesh
*mesh
)
179 u32 offset
= model_get_submodel( model
, 0 )->vertex_count
;
181 for( int i
=1; i
<model
->layer_count
; i
++ )
183 submodel
*sm
= model_get_submodel( model
, i
);
184 u32
*indices
= submodel_indice_data( model
, sm
);
186 for( u32 j
=0; j
<sm
->indice_count
; j
++ )
187 indices
[j
] += offset
;
189 offset
+= sm
->vertex_count
;
192 mesh_upload( mesh
, model_vertex_base( model
), model
->vertex_count
,
193 model_indice_base( model
), model
->indice_count
);
196 static void mesh_free( glmesh
*mesh
)
198 glDeleteVertexArrays( 1, &mesh
->vao
);
199 glDeleteBuffers( 1, &mesh
->ebo
);
200 glDeleteBuffers( 1, &mesh
->vbo
);