bgfx_sys::bgfx_calc_texture_size

pub unsafe extern fn bgfx_calc_texture_size(_info: *mut bgfx_texture_info_t, _width: uint16_t, _height: uint16_t, _depth: uint16_t, _cubeMap: u8, _numMips: uint8_t, _format: bgfx_texture_format_t)