Metallic appearance when applying different substance materials

[sdromero01]

Hi all. I'm trying to get the sbsar plugin to work on our renderer. Though I got it to build, it's currently not generating the appropriate textures. I'm testing with Cardboard.sbsar and natural_lambskin_leather.sbsar from this repo. They both get this appearance:

I know that there is texture being generated because without the sbsar plugin, the asset just looks like this:

Checking the output log, it appears the USD data was created from the .sbsar files, but I'm not sure what could be causing the problem. I attached the output log below:

outputlog.txt

I'm suspecting these UsdUvTexture parameters:

• baseColorTexture
• metallicTexture
• normalTexture
• ambientOcclusionTexture
• roughnessTexture

These are processed as a file parameter as per the specifications for UsdUvTexture. Although in the output log their parameter type is string for the asset path.

Input name: baseColorTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.48452919721603394,0.48452919721603394,0.48452919721603394\],"tearing":0.4000000059604645}.sbsarimage]" | path: /World/MatBall0/Material.inputs:baseColorTexture

Input name: metallicTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard/images?usage=metallic#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.48452919721603394,0.48452919721603394,0.48452919721603394\],"tearing":0.4000000059604645}.sbsarimage]" | path: /World/MatBall0/Material.inputs:metallicTexture

Input name: normalTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard/images?usage=normal#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.48452919721603394,0.48452919721603394,0.48452919721603394\],"tearing":0.4000000059604645}.sbsarimage]" | path: /World/MatBall0/Material.inputs:normalTexture

Input name: ambientOcclusionTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard/images?usage=ambientOcclusion#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.48452919721603394,0.48452919721603394,0.48452919721603394\],"tearing":0.4000000059604645}.sbsarimage]" | path: /World/MatBall0/Material.inputs:ambientOcclusionTexture

Input name: roughnessTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard/images?usage=roughness#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.48452919721603394,0.48452919721603394,0.48452919721603394\],"tearing":0.4000000059604645}.sbsarimage]" | path: /World/MatBall0/Material.inputs:roughnessTexture

Input name: baseColorTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard_1/images?usage=baseColor#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.8543058037757874,0.5838314890861511,0.3491901755332947\],"scale":80,"tearing":0.800000011920929}.sbsarimage]" | path: /World/MatBall1/Material.inputs:baseColorTexture

Input name: metallicTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard_1/images?usage=metallic#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.8543058037757874,0.5838314890861511,0.3491901755332947\],"scale":80,"tearing":0.800000011920929}.sbsarimage]" | path: /World/MatBall1/Material.inputs:metallicTexture

Input name: normalTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard_1/images?usage=normal#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.8543058037757874,0.5838314890861511,0.3491901755332947\],"scale":80,"tearing":0.800000011920929}.sbsarimage]" | path: /World/MatBall1/Material.inputs:normalTexture

Input name: ambientOcclusionTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard_1/images?usage=ambientOcclusion#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.8543058037757874,0.5838314890861511,0.3491901755332947\],"scale":80,"tearing":0.800000011920929}.sbsarimage]" | path: /World/MatBall1/Material.inputs:ambientOcclusionTexture

Input name: roughnessTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/sbsar/data/sbsar/DoubleCardBoard.sbsar[graphs/CardBoard_1/images?usage=roughness#packageHash=525fd058a1b3b486#params={"$outputsize":\[10,10\],"$randomseed":0,"cardboard_color":\[0.8543058037757874,0.5838314890861511,0.3491901755332947\],"scale":80,"tearing":0.800000011920929}.sbsarimage]" | path: /World/MatBall1/Material.inputs:roughnessTexture

I'd appreciate insight on why I have a problem with the generated texture. Were the texture parameters of UsdUvTexture processed properly? Is there a problem with the plugin or how the renderer supports the parameters?

Below is how I built the plugin:

System Info on Docker

• Ubuntu 24.04.3 LTS
• Python 3.12.3
• cmake version 3.28.3
• Ubuntu clang version 18.1.3 (1ubuntu1), Target: x86_64-pc-linux-gnu, Thread model: posix, InstalledDir: /usr/bin
• gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
• OpenUSD v25.11 (built on Nov 7 2025)
• Docker dev.env file:

Docker dev.env file:

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/v25.05/bin:/home/sdromero01/share/USD-Fileformat-plugins/bin/bin:/mnt/share/USD-Fileformat-plugins/bin/plugin/usd
LD_LIBRARY_PATH=/mnt/share/USD-Fileformat-plugins/bin/lib:/usr/local/lib
PYTHONPATH=/usr/local/lib/python
PXR_PLUGINPATH_NAME=/mnt/share/USD-Fileformat-plugins/bin/plugin/usd

Steps to Reproduce:

1. Download the SDK from Adobe Developer Console: substance-ubuntu22-v9.3.1-fb5c0b3b
2. Move the SDK to ~/share then run tar -xf substance-ubuntu22-v9.3.1-fb5c0b3b.tar.bz2
3. git clone [git@github.com](mailto:git@github.com):adobe/USD-Fileformat-plugins.git
4. docker run --env-file dev.env --rm -it -v /path/to/renderer:/renderer -e "DISPLAY=$DISPLAY" -v ./share:/mnt/share -v /tmp/.X11-unix:/tmp/.X11-unix renderer_depends:0.1
5. apt update
6. apt install libgl1-mesa-dev mesa-common-dev
7. Change #include <pxr/usd/usd/usdaFileFormat.h> to #include <pxr/usd/sdf/usdaFileFormat.h> and UsdUsdaFileFormatTokens to SdfUsdaFileFormatTokens in src/sbsarfileformat.cpp
8. cmake -S . -B build -DCMAKE_INSTALL_PREFIX=bin -DCMAKE_BUILD_TYPE=Release -Dpxr_ROOT=/usr/local -Dsubstance_DIR=/mnt/share/substance-ubuntu22-v9.3.1-fb5c0b3b -DUSD_FILEFORMATS_ENABLE_SBSAR=ON -DUSD_FILEFORMATS_ENABLE_FBX=OFF -DUSD_FILEFORMATS_ENABLE_GLTF=OFF -DUSD_FILEFORMATS_ENABLE_OBJ=OFF -DUSD_FILEFORMATS_ENABLE_PLY=OFF -DUSD_FILEFORMATS_ENABLE_SPZ=OFF -DUSD_FILEFORMATS_ENABLE_STL=OFF -DUSD_FILEFORMATS_FETCH_GTEST=OFF -DUSD_FILEFORMATS_FETCH_TINYGLTF=OFF -DUSD_FILEFORMATS_FETCH_HAPPLY=OFF -DUSD_FILEFORMATS_FETCH_FMT=OFF -DUSD_FILEFORMATS_FETCH_FASTFLOAT=OFF -DUSD_FILEFORMATS_BUILD_TESTS=OFF
9. cmake --build build --config release
10. cmake --install build --config release

USD Build

The docker image contains the USD build, this is how it was built in the Dockerfile on November 7, 2025 (OpenUSD v25.08):

if cd OpenUSD; then git pull; cd ..
else git clone https://github.com/PixarAnimationStudios/OpenUSD
fi
python3 -m venv py_venv
source py_venv/bin/activate
pip install PySide6 PyOpenGL
sudo env "PATH=$PATH" py_venv/bin/python3 OpenUSD/build_scripts/build_usd.py $PREFIX \
	--no-examples --no-tutorials --usdview --jobs ${BUILD_PARALLEL}
deactivate

[sdromero01]

I just realized that this issue is likely caused by my Substance 3d Materials SDK - I didn't build it properly! So I tried looking for the documentation on how to build it but I couldn't find any; the Adobe Developer Console states that the technical documentation could be acquired if I download the SDK as pdf, but I couldn't find an option to do so.

I also noticed a CMake warning about a missing substance materials engine, so I added -DSUBSTANCE_FRAMEWORK_ENGINE_VARIANT=sse2_blend to the cmake command. But it still did not resolve the issue. I'll list down my new process.

Docker environment variables

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/mnt/share/USD-Fileformat-plugins/bin/plugin/usd
LD_LIBRARY_PATH=/mnt/share/USD-Fileformat-plugins/bin/lib:/usr/local/lib
PYTHONPATH=/usr/local/lib/python
PXR_PLUGINPATH_NAME=/mnt/share/USD-Fileformat-plugins/bin/plugin/usd

Steps

1. apt update then apt install libgl1-mesa-dev mesa-common-dev
2. In USD_Fileformat-plugins directory, run: cmake -S . -B build -DCMAKE_INSTALL_PREFIX=bin -DCMAKE_BUILD_TYPE=Release -Dpxr_ROOT=/usr/local -Dsubstance_DIR=/mnt/share/substance-ubuntu22-v9.3.1-fb5c0b3b -DUSD_FILEFORMATS_ENABLE_SBSAR=ON -DUSD_FILEFORMATS_ENABLE_FBX=OFF -DUSD_FILEFORMATS_ENABLE_GLTF=OFF -DUSD_FILEFORMATS_ENABLE_OBJ=OFF -DUSD_FILEFORMATS_ENABLE_PLY=OFF -DUSD_FILEFORMATS_ENABLE_SPZ=OFF -DUSD_FILEFORMATS_ENABLE_STL=OFF -DUSD_FILEFORMATS_FETCH_GTEST=OFF -DUSD_FILEFORMATS_FETCH_TINYGLTF=OFF -DUSD_FILEFORMATS_FETCH_HAPPLY=OFF -DUSD_FILEFORMATS_FETCH_FMT=OFF -DUSD_FILEFORMATS_FETCH_FASTFLOAT=OFF -DUSD_FILEFORMATS_BUILD_TESTS=OFF -DUSD_FILEFORMATS_ENABLE_CXX11_ABI=ON -DSUBSTANCE_FRAMEWORK_ENGINE_VARIANT=sse2_blend
3. cmake --build build --config release then cmake --install build --config release

However, even after adding the substance framework engine variant, the output is the same.

Here are some CMake warnings that may be relevant:

[usd-fileformat/sbsar] Building with Texture Transform Support
CMake Warning (dev) at sbsar/src/CMakeLists.txt:162 (install):
  Target usdSbsar has PUBLIC_HEADER files but no PUBLIC_HEADER DESTINATION.

In file included from /usr/local/include/pxr/base/vt/dictionary.h:16,
                 from /usr/local/include/pxr/imaging/hio/image.h:18,
                 from /mnt/share/USD-Fileformat-plugins/sbsar/src/./assetResolver/sbsarImage.h:20,
                 from /mnt/share/USD-Fileformat-plugins/sbsar/src/sbsarEngine/sbsarRender.cpp:13:
/mnt/share/USD-Fileformat-plugins/sbsar/src/sbsarEngine/sbsarRender.cpp: In function 'bool adobe::usd::sbsar::applyParameterValue(SubstanceAir::InputInstanceBase*, SubstanceIOType, const pxrInternal_v0_26_2__pxrReserved__::JsValue&)':
/mnt/share/USD-Fileformat-plugins/sbsar/src/sbsarEngine/sbsarRender.cpp:64:34: warning: too many arguments for format [-Wformat-extra-args]
   64 |                 TF_RUNTIME_ERROR("SbsarRender: cast 'Substance_IOType_Float2', incorrect data size, the size is {}", a.size());
      |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

/mnt/share/USD-Fileformat-plugins/sbsar/src/sbsarEngine/sbsarRenderThread.cpp: In destructor 'adobe::usd::sbsar::RenderThreadState::~RenderThreadState()':
/mnt/share/USD-Fileformat-plugins/sbsar/src/sbsarEngine/sbsarRenderThread.cpp:299:24: warning: unused variable 's' [-Wunused-variable]
  299 |     RenderThreadState* s = getRenderThreadState();
      |                        ^

[sdromero01]

I tried the following options for -DSUBSTANCE_FRAMEWORK_ENGINE_VARIANT :

• ogl3_blend
• ogl3_native
• sse2_blend
• vk_blend
• vk_native

ogl3_native and vk_native did not build because of the following error:

[ 46%] Building CXX object sbsar/src/CMakeFiles/usdSbsar.dir/assetResolver/sbsarAsset.cpp.o
In file included from /mnt/share/USD-Fileformat-plugins/sbsar/src/./assetResolver/sbsarAsset.h:14,
                 from /mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp:13:
/mnt/share/substance-ubuntu22-v9.3.1-fb5c0b3b/include/substance/framework/renderresult.h: In member function 'void* SubstanceAir::RenderResultImage::releaseBuffer()':
/mnt/share/substance-ubuntu22-v9.3.1-fb5c0b3b/include/substance/framework/renderresult.h:109:75: error: 'const SubstanceTexture' {aka 'const struct SubstanceTexture_'} has no member named 'buffer'
  109 |                                 { return castToConcrete(releaseTexture()).buffer; }
      |                                                                           ^~~~~~
/mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp: In function 'uint32_t adobe::usd::sbsar::{anonymous}::_computePixelBufferSize(const SubstanceTexture&)':
/mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp:26:63: error: 'const SubstanceTexture' {aka 'const struct SubstanceTexture_'} has no member named 'pixelFormat'
   26 |     size_t bytePerPixel = SbsarImage::getBytePerPixel(texture.pixelFormat);
      |                                                               ^~~~~~~~~~~
/mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp: In function 'std::shared_ptr<const char> adobe::usd::sbsar::{anonymous}::copyBuffer(const SubstanceAir::RenderResultImage&)':
/mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp:41:31: error: 'struct SubstanceTexture_' has no member named 'pixelFormat'
   41 |     header->pixelFormat = tex.pixelFormat;
      |                               ^~~~~~~~~~~
/mnt/share/USD-Fileformat-plugins/sbsar/src/assetResolver/sbsarAsset.cpp:45:22: error: 'struct SubstanceTexture_' has no member named 'buffer'
   45 |     memcpy(data, tex.buffer, data_size);
      |                      ^~~~~~
gmake[2]: *** [sbsar/src/CMakeFiles/usdSbsar.dir/build.make:90: sbsar/src/CMakeFiles/usdSbsar.dir/assetResolver/sbsarAsset.cpp.o] Error 1
gmake[1]: *** [CMakeFiles/Makefile2:157: sbsar/src/CMakeFiles/usdSbsar.dir/all] Error 2
gmake: *** [Makefile:136: all] Error 2

The rest did build but the output renders were the same!

[paule-adobe]

Hi @sdromero01, we will look into this and get back to you as soon as possible.

[fhechtAdobe]

@sdromero01 could you run usdcat on the SBSAR file to flatten the data usdcat -f -o dump.usda CardBoard.sbsar and post the result?

That .usda file will contain "funky" texture paths. Something like this:
/path/to/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Your system is probably loading these textures via the HioImage class (part of USD) (Or HdStorm is doing that internally). If you could post a few of those textures, it would tell us if the Substance engine generated the right data. in texture space.

And sse2_blend is the safest bet in terms of compatibility, as that is the CPU implementation of the engine.

[sdromero01]

@fhechtAdobe Hi, thanks for the response. here is the result:

#usda 1.0
(
    defaultPrim = "CardBoard"
    doc = """Generated from Composed Stage of root layer /mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar
"""
)

def Material "CardBoard" (
    active = true
    customData = {
        string category = "Paper"
        string packageUrl = "pkg://CardBoard"
    }
    displayName = "CardBoard"
)
{
    asset inputs:ambientOcclusionTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=ambientOcclusion#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:baseColorTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    float4 inputs:coatNormal_bias = (-1, 1, -1, 0) (
        hidden = true
    )
    float4 inputs:coatNormal_scale = (2, -2, 2, 1) (
        hidden = true
    )
    asset inputs:heightTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=height#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:metallicTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=metallic#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    float4 inputs:normal_bias = (-1, 1, -1, 0) (
        hidden = true
    )
    float4 inputs:normal_scale = (2, -2, 2, 1) (
        hidden = true
    )
    asset inputs:normalTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=normal#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:roughnessTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=roughness#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    string inputs:uvChannelName = "st" (
        hidden = true
    )
    float inputs:uvrotation = 0
    float2 inputs:uvscale = (1, 1)
    float2 inputs:uvtranslation = (0, 0)
    token inputs:uvWrapS = "repeat" (
        allowedTokens = ["repeat", "mirror", "clamp", "black"]
    )
    token inputs:uvWrapT = "repeat" (
        allowedTokens = ["repeat", "mirror", "clamp", "black"]
    )
    token outputs:adobe:surface.connect = </CardBoard/ASM/AdobeStandardMaterial.outputs:surface>
    float3 outputs:physicalsize = (0, 0, 0)
    token outputs:surface.connect = </CardBoard/UsdPreviewSurface/ShaderUsdPreviewSurface.outputs:surface>
    custom int2 procedural_sbsar:_outputsize = (9, 9) (
        displayName = "Output Size"
        doc = ""
        hidden = true
        proceduralParameters = {
            int2 default = (9, 9)
            dictionary guiWidgetData = {
                int2 maxValue = (1, 1)
                int2 minValue = (4, 4)
                string userTag = ""
                string visibleIf = ""
                int widget = 0
            }
            string identifier = "$outputsize"
            int type = 8
            uint uid = 1114117526
        }
    )
    custom int procedural_sbsar:_randomseed = 0 (
        displayName = "Random Seed"
        doc = ""
        hidden = true
        proceduralParameters = {
            int default = 0
            dictionary guiWidgetData = {
                string userTag = ""
                string visibleIf = ""
                int widget = 0
            }
            string identifier = "$randomseed"
            int type = 4
            uint uid = 354026436
        }
    )
    custom color3f procedural_sbsar:cardboard_color = (0.3057523, 0.18230669, 0.085529625) (
        displayGroup = "Advanced parameters"
        displayName = "Cardboard Color"
        doc = ""
        proceduralParameters = {
            float3 default = (0.3057523, 0.18230669, 0.085529625)
            dictionary guiWidgetData = {
                string spotColorInfo = ""
                string userTag = ""
                string visibleIf = ""
                int widget = 3
            }
            string identifier = "cardboard_color"
            int type = 2
            uint uid = 725718452
        }
    )
    custom float procedural_sbsar:tearing = 0.25 (
        displayGroup = "Advanced parameters"
        displayName = "Tearing"
        doc = ""
        proceduralParameters = {
            float default = 0.25
            dictionary guiWidgetData = {
                bool clamp = 0
                float maxValue = 1
                float minValue = 0
                float step = 0.01
                string userTag = ""
                string visibleIf = ""
                int widget = 1
            }
            string identifier = "tearing"
            int type = 0
            uint uid = 725741159
        }
    )

    def NodeGraph "ASM"
    {
        def Shader "TexCoordReader"
        {
            uniform token info:id = "UsdPrimvarReader_float2"
            string inputs:varname.connect = </CardBoard.inputs:uvChannelName>
            float2 outputs:result
        }

        def Shader "UvTransform"
        {
            uniform token info:id = "UsdTransform2d"
            float2 inputs:in.connect = </CardBoard/ASM/TexCoordReader.outputs:result>
            float inputs:rotation.connect = </CardBoard.inputs:uvrotation>
            float2 inputs:scale.connect = </CardBoard.inputs:uvscale>
            float2 inputs:translation.connect = </CardBoard.inputs:uvtranslation>
            float2 outputs:result
        }

        def Shader "filebaseColor"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:baseColorTexture>
            token inputs:sourceColorSpace = "sRGB"
            float2 inputs:st.connect = </CardBoard/ASM/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float3 outputs:rgb
        }

        def Shader "fileroughness"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:roughnessTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/ASM/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "filemetallic"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:metallicTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/ASM/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "filenormal"
        {
            uniform token info:id = "UsdUVTexture"
            float4 inputs:bias.connect = </CardBoard.inputs:normal_bias>
            asset inputs:file.connect = </CardBoard.inputs:normalTexture>
            float4 inputs:scale.connect = </CardBoard.inputs:normal_scale>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/ASM/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float3 outputs:rgb
        }

        def Shader "fileheight"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:heightTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/ASM/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "AdobeStandardMaterial"
        {
            uniform token info:id = "AdobeStandardMaterial_4_0"
            float3 inputs:baseColor.connect = </CardBoard/ASM/filebaseColor.outputs:rgb>
            float inputs:height.connect = </CardBoard/ASM/fileheight.outputs:r>
            float inputs:metallic.connect = </CardBoard/ASM/filemetallic.outputs:r>
            float3 inputs:normal.connect = </CardBoard/ASM/filenormal.outputs:rgb>
            float inputs:roughness.connect = </CardBoard/ASM/fileroughness.outputs:r>
            token outputs:surface
        }
    }

    def NodeGraph "UsdPreviewSurface"
    {
        def Shader "TexCoordReader"
        {
            uniform token info:id = "UsdPrimvarReader_float2"
            string inputs:varname.connect = </CardBoard.inputs:uvChannelName>
            float2 outputs:result
        }

        def Shader "UvTransform"
        {
            uniform token info:id = "UsdTransform2d"
            float2 inputs:in.connect = </CardBoard/UsdPreviewSurface/TexCoordReader.outputs:result>
            float inputs:rotation.connect = </CardBoard.inputs:uvrotation>
            float2 inputs:scale.connect = </CardBoard.inputs:uvscale>
            float2 inputs:translation.connect = </CardBoard.inputs:uvtranslation>
            float2 outputs:result
        }

        def Shader "filediffuseColor"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:baseColorTexture>
            token inputs:sourceColorSpace = "sRGB"
            float2 inputs:st.connect = </CardBoard/UsdPreviewSurface/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float3 outputs:rgb
        }

        def Shader "fileocclusion"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:ambientOcclusionTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/UsdPreviewSurface/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "fileroughness"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:roughnessTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/UsdPreviewSurface/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "filemetallic"
        {
            uniform token info:id = "UsdUVTexture"
            asset inputs:file.connect = </CardBoard.inputs:metallicTexture>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/UsdPreviewSurface/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float outputs:r
        }

        def Shader "filenormal"
        {
            uniform token info:id = "UsdUVTexture"
            float4 inputs:bias.connect = </CardBoard.inputs:normal_bias>
            asset inputs:file.connect = </CardBoard.inputs:normalTexture>
            float4 inputs:scale.connect = </CardBoard.inputs:normal_scale>
            token inputs:sourceColorSpace = "raw"
            float2 inputs:st.connect = </CardBoard/UsdPreviewSurface/UvTransform.outputs:result>
            token inputs:wrapS.connect = </CardBoard.inputs:uvWrapS>
            token inputs:wrapT.connect = </CardBoard.inputs:uvWrapT>
            float3 outputs:rgb
        }

        def Shader "ShaderUsdPreviewSurface"
        {
            uniform token info:id = "UsdPreviewSurface"
            color3f inputs:diffuseColor.connect = </CardBoard/UsdPreviewSurface/filediffuseColor.outputs:rgb>
            float inputs:metallic.connect = </CardBoard/UsdPreviewSurface/filemetallic.outputs:r>
            normal3f inputs:normal.connect = </CardBoard/UsdPreviewSurface/filenormal.outputs:rgb>
            float inputs:occlusion.connect = </CardBoard/UsdPreviewSurface/fileocclusion.outputs:r>
            float inputs:roughness.connect = </CardBoard/UsdPreviewSurface/fileroughness.outputs:r>
            token outputs:surface
        }
    }
}

Unfortunately, I couldn't upload the .usda file so I just copy pasted it here.

I rebuilt with sse2_blend as well.

Here are the textures:

    asset inputs:ambientOcclusionTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=ambientOcclusion#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:baseColorTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    float4 inputs:coatNormal_bias = (-1, 1, -1, 0) (
        hidden = true
    )
    float4 inputs:coatNormal_scale = (2, -2, 2, 1) (
        hidden = true
    )
    asset inputs:heightTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=height#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:metallicTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=metallic#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    float4 inputs:normal_bias = (-1, 1, -1, 0) (
        hidden = true
    )
    float4 inputs:normal_scale = (2, -2, 2, 1) (
        hidden = true
    )
    asset inputs:normalTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=normal#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )
    asset inputs:roughnessTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=roughness#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true

Where could I find these textures? In the same directory, here are all the files:

[sdromero01]

I compared the texture paths from dump.usda to the renderer:

ambientOcclusionTexture

Renderer:

Input name: ambientOcclusionTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=ambientOcclusion#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}.sbsarimage]" | path: /materials/Cardboard.inputs:ambientOcclusionTexture

.usda file:

asset inputs:ambientOcclusionTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=ambientOcclusion#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Same texture path!

baseColorTexture

Renderer:

Input name: baseColorTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}.sbsarimage]" | path: /materials/Cardboard.inputs:baseColorTexture

.usda file:

asset inputs:baseColorTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Same texture path!

heightTexture

Not found on renderer!
.usda file:

asset inputs:heightTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=height#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

metallicTexture

Renderer:

 Input name: metallicTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=metallic#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}.sbsarimage]" | path: /materials/Cardboard.inputs:metallicTexture

.usda file:

    asset inputs:metallicTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=metallic#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Same texture path!

normalTexture

Renderer:

Input name: normalTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=normal#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}.sbsarimage]" | path: /materials/Cardboard.inputs:normalTexture

.usda file:

asset inputs:normalTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=normal#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Same texture path!

roughnessTexture

Renderer:

Input name: roughnessTexture | type: String | value: "/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=roughness#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}.sbsarimage]" | path: /materials/Cardboard.inputs:roughnessTexture

.usda file:

asset inputs:roughnessTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=roughness#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]

Same texture path!

Aside from heightTexture, all the texture paths from the .usda file appear to be correctly loaded in the renderer. I am still not sure where to find these generated textures though, they are not in the same directory as USD-Fileformat-plugins/test/assets/sbsar/ where CardBoard.sbsar is, nor in the directory of the renderer.

[fhechtAdobe]

Hi @sdromero01. Thanks for the extra information. All of that stuff looks alright. It seems to generate the right USD data. So the thing we need to check is that the generated textures are correct.

asset inputs:baseColorTexture = @/mnt/share/USD-Fileformat-plugins/test/assets/sbsar/CardBoard.sbsar[graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={"$outputsize":\[9,9\],"$randomseed":0,"cardboard_color":\[0.58890700340271,0.46410298347473145,0.3237049877643585\],"tearing":0.25}]@ (
        hidden = true
    )

This path is considered a packaged path (a USD concept), where the path it points at is inside of the SBSAR file: /path/to/CardBoard.sbsar[...]. The inside path (the packaged path in USD terminology) is graphs/CardBoard/images?usage=baseColor#packageHash=b427747e86441362#params={...}. This is not a normal path to anything on disk (or even on the inside of the SBSAR file). This is a virtual path.

Part of the plugin in a package resolver that can identify the virtual paths and make them available in the USD runtime. They are never written to disk.

So in order to inspect them you need to get access to the textures from your C++ code. There is a class in USD that can open images with such virtual paths called HioImage:
https://openusd.org/release/api/class_hio_image.html
https://github.com/PixarAnimationStudios/OpenUSD/blob/5a64a000cfac4bdbb84387f91f8a3ab1b870fb8c/pxr/imaging/hio/image.h#L37

I would recommend writing some code in your system that opens such a path with this class. The HioImage class can also be used to write a PNG to a location on disk. Here is some example code on how to use it: https://github.com/PixarAnimationStudios/OpenUSD/blob/5a64a000cfac4bdbb84387f91f8a3ab1b870fb8c/pxr/imaging/hio/testenv/testHioImage.cpp#L169

That way you can built a debugging utility to get PNG images on disk for the virtual images from the SBSAR files. Then you can check that they contain the right content from the SBSAR file.

It's complicated, but that is the nature of this very powerful file format plugin.

[sdromero01]

@fhechtAdobe Thank you so much! 😁😁I worked on your advice and got it to somewhat work.

My brick wall and cardboard substance archives currently!

These are the textures generated from brick_wall.sbsar

Still have to figure out why the substance material is not applied uniformly on the object... but that's a new issue, this current one is resolved.

Thanks again! You have all been a great help 😁