void *alloc_image_data(size_t, size_t);
int init_font(Font *, FT_Face, unsigned, unsigned, int);
int render_grid(Font *, unsigned, unsigned, unsigned, int);
void *alloc_image_data(size_t, size_t);
int init_font(Font *, FT_Face, unsigned, unsigned, int);
int render_grid(Font *, unsigned, unsigned, unsigned, int);