hi,VSG only support read obj，etc. 3d moudel?

[wuvalue]

VSG only support read obj，etc. 3d moudel?

[robertosfield]

The core VulkanSceneGraph library just supports the native .vsgb (binary) and .vsgt (ascii text), .spv (SPIR-V shader) and the range of GLSL shader files (.vert, .frag etc.).

The vsgXchange companion library provides 3rd party image and model loaders, and the curl plugin for loading files from https/https. The full list of supported formats is listed on the vsgXchange's README.md. This list you can generate just be running 'vsgconv --features':

$ vsgconv --features
vsgXchange::all
    vsgXchange::curl provides support for 0 extensions, and 2 protocols.
        Protocols       Supported ReaderWriter methods
        ----------      ------------------------------
        http            read(vsg::Path, ..)
        https           read(vsg::Path, ..)

    vsg::VSG provides support for 2 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .vsgb           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)
        .vsgt           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)

    vsg::spirv provides support for 1 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .spv            read(vsg::Path, ..) write(vsg::Path, ..)

    vsgXchange::glsl provides support for 16 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .comp           read(vsg::Path, ..) write(vsg::Path, ..)
        .frag           read(vsg::Path, ..) write(vsg::Path, ..)
        .geom           read(vsg::Path, ..) write(vsg::Path, ..)
        .glsl           read(vsg::Path, ..) write(vsg::Path, ..)
        .hlsl           read(vsg::Path, ..) write(vsg::Path, ..)
        .mesh           read(vsg::Path, ..) write(vsg::Path, ..)
        .rahit          read(vsg::Path, ..) write(vsg::Path, ..)
        .rcall          read(vsg::Path, ..) write(vsg::Path, ..)
        .rchit          read(vsg::Path, ..) write(vsg::Path, ..)
        .rgen           read(vsg::Path, ..) write(vsg::Path, ..)
        .rint           read(vsg::Path, ..) write(vsg::Path, ..)
        .rmiss          read(vsg::Path, ..) write(vsg::Path, ..)
        .task           read(vsg::Path, ..) write(vsg::Path, ..)
        .tesc           read(vsg::Path, ..) write(vsg::Path, ..)
        .tese           read(vsg::Path, ..) write(vsg::Path, ..)
        .vert           read(vsg::Path, ..) write(vsg::Path, ..)

    vsgXchange::cpp provides support for 1 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .cpp            write(vsg::Path, ..)

    vsgXchange::stbi provides support for 10 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .bmp            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .gif            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .jpe            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .jpeg           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .jpg            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .pgm            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .png            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ppm            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .psd            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .tga            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)

    vsgXchange::dds provides support for 1 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .dds            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)

    vsgXchange::ktx provides support for 2 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .ktx            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ktx2           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)

    vsgXchange::openexr provides support for 1 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .exr            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..) write(vsg::Path, ..) write(std::ostream, ..)

    vsgXchange::freetype provides support for 11 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .cef            read(vsg::Path, ..)
        .cff            read(vsg::Path, ..)
        .cid            read(vsg::Path, ..)
        .fnt            read(vsg::Path, ..)
        .fon            read(vsg::Path, ..)
        .otf            read(vsg::Path, ..)
        .pfa            read(vsg::Path, ..)
        .pfb            read(vsg::Path, ..)
        .ttc            read(vsg::Path, ..)
        .ttf            read(vsg::Path, ..)
        .woff           read(vsg::Path, ..)

    vsgXchange::assimp provides support for 69 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .3d             read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .3ds            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .3mf            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ac             read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ac3d           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .acc            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .amf            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ase            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ask            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .assbin         read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .b3d            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .blend          read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .bsp            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .bvh            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .cob            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .csm            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .dae            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .dxf            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .enff           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .fbx            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .glb            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .gltf           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .hmp            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ifc            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ifczip         read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .irr            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .irrmesh        read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .lwo            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .lws            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .lxo            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .md2            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .md3            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .md5anim        read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .md5camera      read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .md5mesh        read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .mdc            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .mdl            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .mesh           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .mesh.xml       read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .mot            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ms3d           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ndo            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .nff            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .obj            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .off            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ogex           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .pk3            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ply            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .pmx            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .prj            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .q3o            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .q3s            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .raw            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .scn            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .sib            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .smd            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .step           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .stl            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .stp            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .ter            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .uc             read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .vta            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .x              read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .x3d            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .x3db           read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .xgl            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .xml            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .zae            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)
        .zgl            read(vsg::Path, ..) read(std::istream, ..) read(uint8_t* ptr, size_t size, ..)

        vsg::Options::Value      type
        -------------------      ----
        crease_angle             float
        generate_sharp_normals   bool
        generate_smooth_normals  bool
        two_sided                bool

    vsgXchange::GDAL provides support for 96 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .ACE2           read(vsg::Path, ..)
        .asc            read(vsg::Path, ..)
        .bag            read(vsg::Path, ..)
        .bil            read(vsg::Path, ..)
        .bin            read(vsg::Path, ..)
        .blx            read(vsg::Path, ..)
        .bmp            read(vsg::Path, ..)
        .bt             read(vsg::Path, ..)
        .byn            read(vsg::Path, ..)
        .cal            read(vsg::Path, ..)
        .ct1            read(vsg::Path, ..)
        .cub            read(vsg::Path, ..)
        .dat            read(vsg::Path, ..)
        .ddf            read(vsg::Path, ..)
        .dem            read(vsg::Path, ..)
        .dgrda          read(vsg::Path, ..)
        .dt0            read(vsg::Path, ..)
        .dt1            read(vsg::Path, ..)
        .dt2            read(vsg::Path, ..)
        .dwg            read(vsg::Path, ..)
        .e00            read(vsg::Path, ..)
        .err            read(vsg::Path, ..)
        .ers            read(vsg::Path, ..)
        .fits           read(vsg::Path, ..)
        .gen            read(vsg::Path, ..)
        .gff            read(vsg::Path, ..)
        .gif            read(vsg::Path, ..)
        .gpkg           read(vsg::Path, ..)
        .gra            read(vsg::Path, ..)
        .grb            read(vsg::Path, ..)
        .grb2           read(vsg::Path, ..)
        .grc            read(vsg::Path, ..)
        .grd            read(vsg::Path, ..)
        .grib2          read(vsg::Path, ..)
        .gsb            read(vsg::Path, ..)
        .gtx            read(vsg::Path, ..)
        .gvb            read(vsg::Path, ..)
        .gxf            read(vsg::Path, ..)
        .h5             read(vsg::Path, ..)
        .hdf            read(vsg::Path, ..)
        .hdf5           read(vsg::Path, ..)
        .hdr            read(vsg::Path, ..)
        .heic           read(vsg::Path, ..)
        .hf2            read(vsg::Path, ..)
        .hgt            read(vsg::Path, ..)
        .img            read(vsg::Path, ..)
        .isg            read(vsg::Path, ..)
        .j2k            read(vsg::Path, ..)
        .jls            read(vsg::Path, ..)
        .jp2            read(vsg::Path, ..)
        .jpeg           read(vsg::Path, ..)
        .jpg            read(vsg::Path, ..)
        .kml            read(vsg::Path, ..)
        .kmz            read(vsg::Path, ..)
        .kro            read(vsg::Path, ..)
        .lbl            read(vsg::Path, ..)
        .lcp            read(vsg::Path, ..)
        .map            read(vsg::Path, ..)
        .mbtiles        read(vsg::Path, ..)
        .mem            read(vsg::Path, ..)
        .mnt            read(vsg::Path, ..)
        .mpl            read(vsg::Path, ..)
        .mpr            read(vsg::Path, ..)
        .mrf            read(vsg::Path, ..)
        .n1             read(vsg::Path, ..)
        .nat            read(vsg::Path, ..)
        .nc             read(vsg::Path, ..)
        .ntf            read(vsg::Path, ..)
        .pdf            read(vsg::Path, ..)
        .pgm            read(vsg::Path, ..)
        .pix            read(vsg::Path, ..)
        .png            read(vsg::Path, ..)
        .pnm            read(vsg::Path, ..)
        .ppi            read(vsg::Path, ..)
        .ppm            read(vsg::Path, ..)
        .prf            read(vsg::Path, ..)
        .rda            read(vsg::Path, ..)
        .rgb            read(vsg::Path, ..)
        .rik            read(vsg::Path, ..)
        .rst            read(vsg::Path, ..)
        .rsw            read(vsg::Path, ..)
        .sdat           read(vsg::Path, ..)
        .sg-grd-z       read(vsg::Path, ..)
        .sigdem         read(vsg::Path, ..)
        .sqlite         read(vsg::Path, ..)
        .ter            read(vsg::Path, ..)
        .tga            read(vsg::Path, ..)
        .tif            read(vsg::Path, ..)
        .tiff           read(vsg::Path, ..)
        .toc            read(vsg::Path, ..)
        .txt            read(vsg::Path, ..)
        .vrt            read(vsg::Path, ..)
        .webp           read(vsg::Path, ..)
        .xml            read(vsg::Path, ..)
        .xpm            read(vsg::Path, ..)
        .xyz            read(vsg::Path, ..)

    vsgXchange::OSG provides support for 115 extensions, and 0 protocols.
        Extensions      Supported ReaderWriter methods
        ----------      ------------------------------
        .*              read(vsg::Path, ..)
        .3dc            read(vsg::Path, ..)
        .3ds            read(vsg::Path, ..)
        .ac             read(vsg::Path, ..)
        .added          read(vsg::Path, ..)
        .asc            read(vsg::Path, ..)
        .attr           read(vsg::Path, ..)
        .bmp            read(vsg::Path, ..)
        .bvh            read(vsg::Path, ..)
        .bw             read(vsg::Path, ..)
        .cef            read(vsg::Path, ..)
        .cff            read(vsg::Path, ..)
        .cfg            read(vsg::Path, ..)
        .cid            read(vsg::Path, ..)
        .compute        read(vsg::Path, ..)
        .cs             read(vsg::Path, ..)
        .curl           read(vsg::Path, ..)
        .dds            read(vsg::Path, ..)
        .dxf            read(vsg::Path, ..)
        .fbx            read(vsg::Path, ..)
        .flt            read(vsg::Path, ..)
        .fnt            read(vsg::Path, ..)
        .fon            read(vsg::Path, ..)
        .frag           read(vsg::Path, ..)
        .fs             read(vsg::Path, ..)
        .gdal           read(vsg::Path, ..)
        .geo            read(vsg::Path, ..)
        .geom           read(vsg::Path, ..)
        .gif            read(vsg::Path, ..)
        .gl             read(vsg::Path, ..)
        .gles           read(vsg::Path, ..)
        .glsl           read(vsg::Path, ..)
        .gs             read(vsg::Path, ..)
        .gz             read(vsg::Path, ..)
        .hdr            read(vsg::Path, ..)
        .int            read(vsg::Path, ..)
        .inta           read(vsg::Path, ..)
        .ive            read(vsg::Path, ..)
        .ivez           read(vsg::Path, ..)
        .jpeg           read(vsg::Path, ..)
        .jpg            read(vsg::Path, ..)
        .ktx            read(vsg::Path, ..)
        .logo           read(vsg::Path, ..)
        .lua            read(vsg::Path, ..)
        .lw             read(vsg::Path, ..)
        .lwo            read(vsg::Path, ..)
        .lws            read(vsg::Path, ..)
        .material       read(vsg::Path, ..)
        .md2            read(vsg::Path, ..)
        .modified       read(vsg::Path, ..)
        .normals        read(vsg::Path, ..)
        .obj            read(vsg::Path, ..)
        .ogr            read(vsg::Path, ..)
        .osc            read(vsg::Path, ..)
        .osg            read(vsg::Path, ..)
        .osg2           read(vsg::Path, ..)
        .osga           read(vsg::Path, ..)
        .osgb           read(vsg::Path, ..)
        .osgjs          read(vsg::Path, ..)
        .osgs           read(vsg::Path, ..)
        .osgshadow      read(vsg::Path, ..)
        .osgt           read(vsg::Path, ..)
        .osgterrain     read(vsg::Path, ..)
        .osgtgz         read(vsg::Path, ..)
        .osgviewer      read(vsg::Path, ..)
        .osgx           read(vsg::Path, ..)
        .osgz           read(vsg::Path, ..)
        .otf            read(vsg::Path, ..)
        .path           read(vsg::Path, ..)
        .pbm            read(vsg::Path, ..)
        .pfa            read(vsg::Path, ..)
        .pfb            read(vsg::Path, ..)
        .pgm            read(vsg::Path, ..)
        .pic            read(vsg::Path, ..)
        .pivot_path     read(vsg::Path, ..)
        .ply            read(vsg::Path, ..)
        .png            read(vsg::Path, ..)
        .pnm            read(vsg::Path, ..)
        .pov            read(vsg::Path, ..)
        .ppm            read(vsg::Path, ..)
        .pvr            read(vsg::Path, ..)
        .removed        read(vsg::Path, ..)
        .revisions      read(vsg::Path, ..)
        .rgb            read(vsg::Path, ..)
        .rgba           read(vsg::Path, ..)
        .rot            read(vsg::Path, ..)
        .rotation_path  read(vsg::Path, ..)
        .scale          read(vsg::Path, ..)
        .sgi            read(vsg::Path, ..)
        .shadow         read(vsg::Path, ..)
        .shp            read(vsg::Path, ..)
        .sta            read(vsg::Path, ..)
        .stl            read(vsg::Path, ..)
        .tctrl          read(vsg::Path, ..)
        .terrain        read(vsg::Path, ..)
        .teval          read(vsg::Path, ..)
        .text3d         read(vsg::Path, ..)
        .tf             read(vsg::Path, ..)
        .tf-255         read(vsg::Path, ..)
        .tga            read(vsg::Path, ..)
        .tgz            read(vsg::Path, ..)
        .tif            read(vsg::Path, ..)
        .tiff           read(vsg::Path, ..)
        .trans          read(vsg::Path, ..)
        .trk            read(vsg::Path, ..)
        .ttc            read(vsg::Path, ..)
        .ttf            read(vsg::Path, ..)
        .txf            read(vsg::Path, ..)
        .txp            read(vsg::Path, ..)
        .vert           read(vsg::Path, ..)
        .view           read(vsg::Path, ..)
        .vs             read(vsg::Path, ..)
        .woff           read(vsg::Path, ..)
        .x              read(vsg::Path, ..)
        .zip            read(vsg::Path, ..)

        vsg::Options::Value  type
        -------------------  ----
        original_converter   bool
        read_build_options   string
        write_build_options  string