Regardless of model complexity, converting a glTF to sfb always fails when it has no normals.
Example glTF:

{
    "accessors": [
        {
            "bufferView": 0,
            "componentType": 5123,
            "count": 36,
            "max": [
                23.0
            ],
            "min": [
                0.0
            ],
            "type": "SCALAR"
        },
        {
            "bufferView": 1,
            "componentType": 5126,
            "count": 24,
            "max": [
                0.5,
                0.5,
                0.5
            ],
            "min": [
                -0.5,
                -0.5,
                -0.5
            ],
            "type": "VEC3"
        }
    ],
    "asset": {
        "extras": {},
        "version": "2.0"
    },
    "bufferViews": [
        {
            "buffer": 0,
            "byteLength": 72,
            "target": 34963
        },
        {
            "buffer": 0,
            "byteLength": 288,
            "byteOffset": 72,
            "byteStride": 12,
            "target": 34962
        }
    ],
    "buffers": [
        {
            "byteLength": 360,
            "uri": "data:application/octet-stream;base64,AAABAAIAAwACAAEABAAFAAYABwAGAAUACAAJAAoACwAKAAkADAANAA4ADwAOAA0AEAARABIAEwASABEAFAAVABYAFwAWABUAAAAAvwAAAD8AAAA/AAAAPwAAAD8AAAA/AAAAvwAAAD8AAAC/AAAAPwAAAD8AAAC/AAAAPwAAAD8AAAA/AAAAvwAAAD8AAAA/AAAAPwAAAL8AAAA/AAAAvwAAAL8AAAA/AAAAPwAAAD8AAAC/AAAAPwAAAD8AAAA/AAAAPwAAAL8AAAC/AAAAPwAAAL8AAAA/AAAAvwAAAD8AAAC/AAAAPwAAAD8AAAC/AAAAvwAAAL8AAAC/AAAAPwAAAL8AAAC/AAAAvwAAAD8AAAA/AAAAvwAAAD8AAAC/AAAAvwAAAL8AAAA/AAAAvwAAAL8AAAC/AAAAvwAAAL8AAAA/AAAAvwAAAL8AAAC/AAAAPwAAAL8AAAA/AAAAPwAAAL8AAAC/"
        }
    ],
    "meshes": [
        {
            "name": "Mesh",
            "primitives": [
                {
                    "attributes": {
                        "POSITION": 1
                    },
                    "indices": 0,
                    "mode": 4
                }
            ]
        }
    ],
    "nodes": [
        {
            "mesh": 0
        }
    ],
    "scene": 0,
    "scenes": [
        {
            "nodes": [
                0
            ]
        }
    ]
}

Conversion command:

~/Code/google-ar-asset-converter/sceneform_sdk/linux/converter -b no_norms.gltf

Result:

Segmentation fault (core dumped)

I got one (pretty large) example OBJ file which is causing the error in the title when I run it server-side on AWS (Linux). The same conversion does succeed locally on Mac OS though.

Error: Running matc: Failed to run external command

Has anyone seen this error?
Can anyone help point me in the right direction?

I am not sure what to make of it. My other test files work fine and the only notable difference is the size of the input file.

• Does not seem to reach a memory limit, as far as AWS metrics can show me.
• It is finding the matc command (removing that executable gives a different error).
• The error is returned in STDOut not STDErr.

Note: I am posting here in the hope that someone else also using this converter separately might have seen the same error output.

I would expect that, if an SFA file is present for the given SFB and if converter is launched without -a option, the content of SFA is used to update SFB.

Android Studio allows changing SFA file and to update SFB. How can I achieve the same result using converter script?

The reason why I am asking this question is the following: converter script, as well as Android Studio, detects the object as too large and so sets the scale to some (random) value to compensate. I need to set the scale to 100%. In Android Studio, I am used to edit generated SFA files, change the scale to what I need and then rebuild.

Whenever i am trying to use --scale_overide command the exe stops working.
Can you please tell me how to use this command to override the scaling value of my files?

For other files of one model, the total size is 4 MB. However, the sfb file of this model is around 10MB. Do we really need sfb file? Our app downloads the model in realtime, so we really concern about the size of models.

Hi,

I am getting different results in comparison to current version of Sceneform v1.3.0.
There are more details in this issue: google-ar/sceneform-android-sdk#150.
Fortunately your scripts are giving a better results, except of shadow, but I think it should not be different from results you get from plugin.

The following command on the 1.7.0 converter:

./converter fj1252.obj

fails with:

- Import failed with 4 errors:
-E: OBJ: failed to locate material mtl1, creating new material
-E: OBJ: vertex index out of range
-E: Unable to load scene: fj1252.obj
-E: OBJ: vertex index out of range
ERROR [third_party/lullaby/tools/model_pipeline/model_pipeline.cc:311] Unable to import model: fj1252
Error: Failed to import 'fj1252.obj'

The converter from 1.6.0 works as expected without errors. Other arguments do not play a role, I tested some of them. Workaround only use the converter from version 1.6.0 or below. This maybe a bug of 1.7.0, so feel free to close this issue as you please. The file is: fj1252.zip

command used:
./sceneform_sdk/linux/converter -a -d --mat ./sceneform_sdk/default_materials/obj_material.sfm --outdir ./output/ ./input/andy.obj

Error message:

./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.10' not found (required by ./sceneform_sdk/linux/converter) ./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.14' not found (required by ./sceneform_sdk/linux/converter)
./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.7' not found (required by ./sceneform_sdk/linux/converter) ./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.16' not found (required by ./sceneform_sdk/linux/converter)
./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.6' not found (required by ./sceneform_sdk/linux/converter) ./sceneform_sdk/linux/converter: /lib64/libc.so.6: version GLIBC_2.12' not found (required by ./sceneform_sdk/linux/converter)

Hi I am trying to convert a fbx file by this command

./converter -a -d --mat /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/default_materials/fbx_material.sfm --outdir /Users/macbookpro/Downloads/google-ar-asset-converter-master/output /Users/macbookpro/Downloads/Display8.fbx

but I am getting below Error

2019-09-20 12:53:05.577 converter[576:11382] FATAL (null)
2019-09-20 12:53:05.579 converter[576:11382] FATAL Dumping stack:
#00 pc 0000000104f9a510 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (ion::base::logging_internal::Logger::~Logger()+128)
#1 pc 0000000104f6b33f /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::CompactBoneIndex(int)+266)
#2 pc 0000000104f6b981 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::GatherBoneIndexMaps(std::__1::vector<lull::tool::Bone, std::__1::allocatorlull::tool::Bone > const&, std::__1::vector<lull::tool::Vertex, std::__1::allocatorlull::tool::Vertex > const&, std::__1::vector<unsigned char, std::__1::allocator >, std::__1::vector<unsigned char, std::__1::allocator >)+379)
#3 pc 0000000104f5b42c /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::ExportModelInstance(lull::tool::Model const&, lull::ModelInstanceDefT*, lull::ModelPipelineRenderableDefT*, lull::tool::ExportOptions)+134)
#4 pc 0000000104f5fcde /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::ExportModel(std::__1::unordered_map<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >, lull::tool::Model, std::__1::hash<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > >, std::__1::equal_to<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > >, std::__1::allocator<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > const, lull::tool::Model> > > const&, std::__1::unordered_map<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator >, lull::tool::TextureInfo, std::__1::hash<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > >, std::__1::equal_to<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > >, std::__1::allocator<std::__1::pair<std::__1::basic_string<char, std::__1::char_traits, std::__1::allocator > const, lull::tool::TextureInfo> > > const&, lull::tool::ExportOptions, lull::ModelPipelineDefT*)+924)
#5 pc 0000000104f54af3 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::ModelPipeline::Build(lull::tool::ExportOptions)+47)
#6 pc 0000000104f52d00 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (lull::tool::ModelPipeline::Import(lull::ModelPipelineDef const*, lull::tool::ExportOptions)+7296)
#7 pc 000000010446d2e0 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (sceneform::converter::Converter::Run()+5876)
#8 pc 000000010446af94 /Users/macbookpro/Downloads/google-ar-asset-converter-master/sceneform_sdk/mac/./converter (main+3924)

is there something wrong with the command

I'm curious how the sceneform_sdk files get abstracted from the sdk, could you provide some insight on how this is done?

Thanks!

When i try to convert model from fbx file it gets only one texture applied to .sfb
FBX:

.SFB:

to convert i use command:
./sceneform_sdk/windows/converter -a -d --mat ./sceneform_sdk/default_materials/fbx_material.sfm --outdir ./output/ ./input/wheel.fbx

I see that .sfa file contain information about every material, but only one is applied to model.
Thanks for help

If I convert fbx to sfb and try to use it with com.google.ar.sceneform:animation:1.10.0 my app crashes with:
E/Filament: Panic
in filament::Material *filament::Material::Builder::build(filament::Engine &):86
reason: Material version mismatch. Expected 3 but received 2.
2019-06-25 16:05:31.929 27367-27367/com.google.ar.sceneform.samples.hellosceneform A/libc: Fatal signal 6 (SIGABRT), code -6 in tid 27367 (.hellosceneform), pid 27367 (.hellosceneform)

Could you update it to 1.10.0 version to make it work with com.google.ar.sceneform:animation:1.10.0 ?

I don't want to be picky, it is just my master thesis depends the converter :)

https://github.com/google-ar/sceneform-android-sdk/releases/tag/v1.10.0%C2%A0

Could you tell me where did you find this binaries? Thanks.

Hello! I try convert a model from .fbx format to .sfb. The model contains links to textures, and when I try to convert it I got:

Command to converter:
./converter -a -d --mat ../default_materials/fbx_material.sfm ~/correct_path_to_fbx/sun.fbx

Output from converter:

WARNING: 2 textures declared in source assets were not found on disk:
> - Tex\Sun01_A.png
> - Tex\Sun02_A.png

The directory ~/correct_path_to_fbx contains Tex\Sun01_A.png and Tex\Sun02_A.png

Actually, I got sfb-file, but it doesn't include textures.

What am I doing wrong?

Hi, thanks for this, it really helped with my app. However, I am having issues with changing the texture of sfb renderables converted from obj by this converter. Have you had to do so? If so, how did you accomplish it? renderable.material.setTexture appears to do nothing at all. All I have to do is change the color. Thanks!

https://plugins.jetbrains.com/plugin/10698-google-sceneform-tools-beta-

my issue is as follow：

Hi, i want to use this converter on an Android device, for runtime converting .obj to .sfb.
My code does not work.

val root = getExternalFilesDir(null).toString() + "/google-ar-asset-converter"

val command = "chmod u+x $root/sceneform_sdk/linux/converter -a -d --mat $root/sceneform_sdk/default_materials/obj_material.sfm --outdir $root/output/ $root/input/andy.obj"

val process: Process = Runtime.getRuntime().exec("$command")

E/ERROR: chmod: -a: No such file or directory
chmod: -d: No such file or directory
chmod: --mat: No such file or directory
chmod: --outdir: No such file or directory

Do you have any idea how to fix this error?

Getting below resource not found error, when I try to convert file from Poly to .sfb format.
Image is generated but colors are not rendered properly.

ubuntu@ubuntu:~/Downloads/google-ar-asset-converter-master$ ./sceneform_sdk/linux/converter -a -d --mat ./sceneform_sdk/default_materials/obj_material.sfm --outdir ./output/ ./input/human_male.obj
Warning: Imported asset was very large (683.8 x 1763.7 x 398.2 m)
Setting scale to: 0.0025113 to compensate
Info: Generated SFA from ./input/human_male.obj

WARNING: 20 textures declared in source assets were not found on disk:

• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Body_Opacity.png
• man1_Body_Normal_Normal_Bump.tga
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Body_Specular.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Body_Diffuse.png
• man1_Bottom_Normal_Normal_Bump.tga
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Bottom_Specular.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Bottom_Opacity.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Bottom_Diffuse.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Top_Opacity.png
• man1_Top_Normal_Normal_Bump.tga
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Top_Specular.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Top_Diffuse.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Shoes_Opacity.png
• man1_Shoes_Normal_Normal_Bump.tga
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Shoes_Specular.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Shoes_Diffuse.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Hair_Opacity.png
• man1_Hair_Normal_Normal_Bump.tga
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Hair_Specular.png
• D:\VirtualSpeech\App\Unity\VS_google_cardboard_v31\Assets\avatars\male_high_res\man1.fbm\man1_Hair_Diffuse.png
  (use -I to add other search folders)
  Info: Wrote SFA (json) to ./output/human_male.sfa (2555 bytes)
  Info: Wrote SFB to ./output/human_male.sfb (1393752 bytes)