Guidance on troubleshooting properly loading MoonrayShaderDiscovery.so, missing python module #205

cwpenhale · 2025-07-15T23:48:56Z

cwpenhale
Jul 15, 2025

Hey team,

I have the latest version of openmoonray working (moonray, moonray_gui, and hd_moonray) on my gentoo system. Houdini is loading the hydra delegate, and rendering. However, there's a problem loading the MoonrayShaderDiscovery and Parser plugins, as shown in the output below (houdini -foreground). I remember fighting something similar 6 months ago, but I didn't document what I did to fix it in 1.7.0.0. I'm going to fight this for a few days, but just in case someone's available to give me some pointers in tracking this down, please let me know! I'll post the answer here one way or another for posterity's sake.

houdini -foreground test.hiplc |tee houdini-repro.log
Will check plugin info paths:
    /opt/hfs20.5/houdini/dso/usd_plugins
Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/plugInfo.json
Globbing plugin info path /opt/hfs20.5/houdini/dso/usd_plugins/*/resources/
Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdNc/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdNc/resources/plugInfo.json
Registering shared library plugin 'usdNc' at '/opt/hfs20.5/houdini/dso/usd/USD_NC.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdKarma/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/HdHDebug/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdKarma/resources/plugInfo.json
Registering resource plugin 'usdKarma' at '/opt/hfs20.5/houdini/dso/usd_plugins/usdKarma'.

Unable to read library plugin 'usdKarma' at '/opt/hfs20.5/houdini/dso/usd_plugins/usdKarma'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHusk/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHusk/resources/plugInfo.json
Registering resource plugin 'usdHusk' at '/opt/hfs20.5/houdini/dso/usd_plugins/usdHusk'.

Unable to read library plugin 'usdHusk' at '/opt/hfs20.5/houdini/dso/usd_plugins/usdHusk'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHoudini/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/HdHDebug/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHoudini/resources/plugInfo.json
Registering shared library plugin 'usdHoudini' at ''.

Unable to read library plugin 'usdHoudini' at ''.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHGeo/resources/plugInfo.json
Registering shared library plugin 'HdHDebug' at '/opt/hfs20.5/houdini/dso/usd/HdHDebug.so'.

 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHGeo/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/arHFs/resources/plugInfo.json
Registering shared library plugin 'usdHGeo' at '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHDA/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/arHFs/resources/plugInfo.json
Registering shared library plugin 'arHFs' at '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/hdHoudini/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/usdHDA/resources/plugInfo.json
Registering shared library plugin 'usdHDA' at '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/sdrKarmaParser/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/hdHoudini/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/sdrKarmaParser/resources/plugInfo.json
Registering shared library plugin 'hdHoudini' at '/opt/hfs20.5/houdini/dso/usd/USD_HD.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/hdKarma/resources/plugInfo.json
Registering shared library plugin 'sdrKarmaParser' at '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaParser.so'.

Will read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/sdrKarmaDiscovery/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/hdKarma/resources/plugInfo.json
Registering shared library plugin 'hdKarma' at '/opt/hfs20.5/houdini/dso/usd/BRAY_HdKarma.so'.

 Did read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/sdrKarmaDiscovery/resources/plugInfo.json
Registering shared library plugin 'sdrKarmaDiscovery' at '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaDiscovery.so'.

 Did check plugin info paths in 0.001138 seconds
Plug will search for plug infos under '/opt/hfs20.5/dsolib/'
Will check plugin info paths:
    /opt/openmoonray/plugin/pxr
    /opt/hfs20.5/dsolib/usd_plugins
    /opt/hfs20.5/houdini/dso/usd_plugins
    /opt/hfs20.5/dsolib/usd_plugins
Will read plugin info /opt/openmoonray/plugin/pxr/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/plugInfo.json
Globbing plugin info path /opt/openmoonray/plugin/pxr/*/
Will read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderParser/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderParser/plugInfo.json
Registering shared library plugin 'moonrayShaderParser' at '/opt/openmoonray/plugin/moonrayShaderParser.so'.

Will read plugin info /opt/openmoonray/plugin/pxr/hdMoonrayAdapters/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/hd_moonray/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderDiscovery/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/hd_moonray_debug/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hdMoonrayAdapters/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hd_moonray/plugInfo.json
Registering shared library plugin 'hdMoonrayAdapters' at '/opt/openmoonray/plugin/hdMoonrayAdapters.so'.

Registering shared library plugin 'hd_moonray' at '/opt/openmoonray/plugin/hd_moonray.so'.

 Did read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderDiscovery/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hd_moonray_debug/plugInfo.json
Registering shared library plugin 'moonrayShaderDiscovery' at '/opt/openmoonray/plugin/moonrayShaderDiscovery.so'.

Registering shared library plugin 'hd_moonray_debug' at '/opt/openmoonray/plugin/hd_moonray_debug.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/plugInfo.json
Globbing plugin info path /opt/hfs20.5/dsolib/usd_plugins/*/resources/
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdVolImaging/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdVolImaging/resources/plugInfo.json
Registering shared library plugin 'usdVolImaging' at '/opt/hfs20.5/dsolib/libpxr_usdVolImaging.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdVol/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdVol/resources/plugInfo.json
Registering shared library plugin 'usdVol' at '/opt/hfs20.5/dsolib/libpxr_usdVol.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdUI/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdUI/resources/plugInfo.json
Registering shared library plugin 'usdUI' at '/opt/hfs20.5/dsolib/libpxr_usdUI.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdSkelImaging/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdSkelImaging/resources/plugInfo.json
Registering shared library plugin 'usdSkelImaging' at '/opt/hfs20.5/dsolib/libpxr_usdSkelImaging.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdSkel/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdSkel/resources/plugInfo.json
Registering shared library plugin 'usdSkel' at '/opt/hfs20.5/dsolib/libpxr_usdSkel.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdShaders/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdShaders/resources/plugInfo.json
Registering shared library plugin 'usdShaders' at '/opt/hfs20.5/dsolib/usd_plugins/usdShaders.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdShade/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdShade/resources/plugInfo.json
Registering shared library plugin 'usdShade' at '/opt/hfs20.5/dsolib/libpxr_usdShade.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRiPxrImaging/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRiPxrImaging/resources/plugInfo.json
Registering shared library plugin 'usdRiPxrImaging' at '/opt/hfs20.5/dsolib/libpxr_usdRiPxrImaging.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRi/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/ar/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRi/resources/plugInfo.json
Registering shared library plugin 'usdRi' at '/opt/hfs20.5/dsolib/libpxr_usdRi.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRender/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdRender/resources/plugInfo.json
Registering shared library plugin 'usdRender' at '/opt/hfs20.5/dsolib/libpxr_usdRender.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdProcImaging/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdProcImaging/resources/plugInfo.json
Registering shared library plugin 'usdProcImaging' at '/opt/hfs20.5/dsolib/libpxr_usdProcImaging.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdProc/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdProc/resources/plugInfo.json
Registering shared library plugin 'usdProc' at '/opt/hfs20.5/dsolib/libpxr_usdProc.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdPhysics/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/ar/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdPhysics/resources/plugInfo.json
Registering shared library plugin 'usdPhysics' at '/opt/hfs20.5/dsolib/libpxr_usdPhysics.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdMtlx/resources/plugInfo.json
Registering shared library plugin 'ar' at '/opt/hfs20.5/dsolib/libpxr_ar.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdMtlx/resources/plugInfo.json
Registering shared library plugin 'usdMtlx' at '/opt/hfs20.5/dsolib/libpxr_usdMtlx.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/glf/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdMedia/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/glf/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdMedia/resources/plugInfo.json
Registering shared library plugin 'glf' at '/opt/hfs20.5/dsolib/libpxr_glf.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hd/resources/plugInfo.json
Registering shared library plugin 'usdMedia' at '/opt/hfs20.5/dsolib/libpxr_usdMedia.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdLux/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hd/resources/plugInfo.json
Registering shared library plugin 'hd' at '/opt/hfs20.5/dsolib/libpxr_hd.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdGp/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdGp/resources/plugInfo.json
Registering shared library plugin 'hdGp' at '/opt/hfs20.5/dsolib/libpxr_hdGp.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdLux/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdSt/resources/plugInfo.json
Registering shared library plugin 'usdLux' at '/opt/hfs20.5/dsolib/libpxr_usdLux.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdImagingGL/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdImagingGL/resources/plugInfo.json
Registering shared library plugin 'usdImagingGL' at '/opt/hfs20.5/dsolib/libpxr_usdImagingGL.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdImaging/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdSt/resources/plugInfo.json
Registering shared library plugin 'hdSt' at '/opt/hfs20.5/dsolib/libpxr_hdSt.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdStorm/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdStorm/resources/plugInfo.json
Registering shared library plugin 'hdStorm' at '/opt/hfs20.5/dsolib/usd_plugins/hdStorm.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdImaging/resources/plugInfo.json
Registering shared library plugin 'usdImaging' at '/opt/hfs20.5/dsolib/libpxr_usdImaging.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdx/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdHydra/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hdx/resources/plugInfo.json
Registering shared library plugin 'hdx' at '/opt/hfs20.5/dsolib/libpxr_hdx.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hgiGL/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdHydra/resources/plugInfo.json
Registering shared library plugin 'usdHydra' at '/opt/hfs20.5/dsolib/libpxr_usdHydra.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdGeom/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hgiGL/resources/plugInfo.json
Registering shared library plugin 'hgiGL' at '/opt/hfs20.5/dsolib/libpxr_hgiGL.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hio/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hio/resources/plugInfo.json
Registering shared library plugin 'hio' at '/opt/hfs20.5/dsolib/libpxr_hio.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/hioOiio/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/hioOiio/resources/plugInfo.json
Registering shared library plugin 'hioOiio' at '/opt/hfs20.5/dsolib/usd_plugins/hioOiio.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/ndr/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdGeom/resources/plugInfo.json
Registering shared library plugin 'usdGeom' at '/opt/hfs20.5/dsolib/libpxr_usdGeom.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/ndr/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdAbc/resources/plugInfo.json
Registering shared library plugin 'ndr' at '/opt/hfs20.5/dsolib/libpxr_ndr.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdf/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usdAbc/resources/plugInfo.json
Registering shared library plugin 'usdAbc' at '/opt/hfs20.5/dsolib/usd_plugins/usdAbc.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/usd/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdf/resources/plugInfo.json
Registering shared library plugin 'sdf' at '/opt/hfs20.5/dsolib/libpxr_sdf.so'.

Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdrGlslfx/resources/plugInfo.json
 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/usd/resources/plugInfo.json
Registering shared library plugin 'usd' at '/opt/hfs20.5/dsolib/libpxr_usd.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdrGlslfx/resources/plugInfo.json
Will read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdrOsl/resources/plugInfo.json
Registering shared library plugin 'sdrGlslfx' at '/opt/hfs20.5/dsolib/usd_plugins/sdrGlslfx.so'.

 Did read plugin info /opt/hfs20.5/dsolib/usd_plugins/sdrOsl/resources/plugInfo.json
Registering shared library plugin 'sdrOsl' at '/opt/hfs20.5/dsolib/usd_plugins/sdrOsl.so'.

Ignore already read plugin info /opt/hfs20.5/houdini/dso/usd_plugins/plugInfo.json
Ignore already read plugin info /opt/hfs20.5/dsolib/usd_plugins/plugInfo.json
 Did check plugin info paths in 0.001994 seconds
--debug message from line 34 of plugin/houdini/python3.11libs/pythonrc.py--
Loading plugin 'sdf'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_sdf.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_sdf.so' (handle=0x7fd9ea26f550)
Loading plugin 'usd'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_usd.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_usd.so' (handle=0x7fd9ea270a90)
Loading plugin 'usdNc'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/USD_NC.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/USD_NC.so' (handle=0x7fd7e826d200)
Loading plugin 'hdHoudini'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/USD_HD.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/USD_HD.so' (handle=0x7fd748751600)
Loading plugin 'hdGp'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_hdGp.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_hdGp.so' (handle=0x7fd9e9cf7580)
Loading plugin 'hd_moonray'.
TfDlopen: [opening] '/opt/openmoonray/plugin/hd_moonray.so' (flag=2)...
TfDlopen: [opened] '/opt/openmoonray/plugin/hd_moonray.so' (handle=0x7fd7466c2900)
Loading plugin 'hgiGL'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_hgiGL.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_hgiGL.so' (handle=0x7fd748753900)
2025-07-15T17:47:04.990299 D client[28457]:140572941602816: [2ac0318b-4626-4805-b94b-060b2d1c3e93]: {trace:comp} launch 779714d7-d720-4392-ab84-51dfc1b8b8ae mcrt
{trace:mcrt} version mcrt_computation-(unknown) host rux
{trace:comp} ready 779714d7-d720-4392-ab84-51dfc1b8b8ae
2025-07-15T17:47:05.293250 D client[28457]:140572941602816: [2ac0318b-4626-4805-b94b-060b2d1c3e93]: {trace:session} clientConnect 2ac0318b-4626-4805-b94b-060b2d1c3e93 local arras4_client-???;arras4_core_impl-???;arras4_network-???
{trace:mcrt} stage ready start 779714d7-d720-4392-ab84-51dfc1b8b8ae
{trace:comp} start 779714d7-d720-4392-ab84-51dfc1b8b8ae
GlobalNodeInfo HostName {
  mClientHostName:rux
  mDispatchHostName:
  mMergeHostName: mMergeCpuTotal:0
  mcrt (totalMcrt:1 totalCpu:384) {
    mMachineId:0 mCpuTotal:384 mHostName:rux
  }
}
Starting Rendering (syncId:1)
{trace:mcrt} stage renderPrep start 779714d7-d720-4392-ab84-51dfc1b8b8ae bd3e76db-c318-4182-836f-a1a213eccc30
Render prep time = 00:00:00.005
{trace:mcrt} stage shading start 0.400059 779714d7-d720-4392-ab84-51dfc1b8b8ae bd3e76db-c318-4182-836f-a1a213eccc30
{trace:mcrt} stage shading complete 1 779714d7-d720-4392-ab84-51dfc1b8b8ae bd3e76db-c318-4182-836f-a1a213eccc30
stdout 00:00:00    1.9 GB | ---------- Time ------------------------------------------
stdout 00:00:00    1.9 GB | Render time                      = 00:00:00.156000
stdout 00:00:00    1.9 GB | Total time                       = 00:00:00.192000
Loading plugin 'arHFs'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so' (handle=0x7fd716648e00)
Loading plugin 'usdHGeo'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/USD_Plugins.so' (handle=0x7fd716648e00)
Loading plugin 'usdImaging'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_usdImaging.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_usdImaging.so' (handle=0x7fd9eb87f630)
Loaded plugin 'usdImaging' in a secondary thread.
Loading plugin 'sdrKarmaParser'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaParser.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaParser.so' (handle=0x7fd79e07a400)
Loaded plugin 'sdrKarmaParser' in a secondary thread.
Loading plugin 'moonrayShaderParser'.
TfDlopen: [opening] '/opt/openmoonray/plugin/moonrayShaderParser.so' (flag=2)...
TfDlopen: [opened] '/opt/openmoonray/plugin/moonrayShaderParser.so' (handle=0x7fd79e07aa00)
Traceback (most recent call last):
  File "/opt/hfs20.5.654/python/lib/python3.11/site-packages-forced/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'pxr.MoonrayShaderParser'
Loaded plugin 'moonrayShaderParser' in a secondary thread.
Loading plugin 'sdrGlslfx'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/usd_plugins/sdrGlslfx.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/usd_plugins/sdrGlslfx.so' (handle=0x7fd79e07b000)
Loaded plugin 'sdrGlslfx' in a secondary thread.
Loading plugin 'sdrOsl'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/usd_plugins/sdrOsl.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/usd_plugins/sdrOsl.so' (handle=0x7fd79e07b600)
Loaded plugin 'sdrOsl' in a secondary thread.
Loading plugin 'usdMtlx'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/libpxr_usdMtlx.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/libpxr_usdMtlx.so' (handle=0x7fd748754300)
Loaded plugin 'usdMtlx' in a secondary thread.
Loading plugin 'moonrayShaderDiscovery'.
TfDlopen: [opening] '/opt/openmoonray/plugin/moonrayShaderDiscovery.so' (flag=2)...
TfDlopen: [opened] '/opt/openmoonray/plugin/moonrayShaderDiscovery.so' (handle=0x7fd79e07c200)
Traceback (most recent call last):
  File "/opt/hfs20.5.654/python/lib/python3.11/site-packages-forced/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'pxr.MoonrayShaderDiscovery'
Loaded plugin 'moonrayShaderDiscovery' in a secondary thread.
Loading plugin 'usdShaders'.
TfDlopen: [opening] '/opt/hfs20.5/dsolib/usd_plugins/usdShaders.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/dsolib/usd_plugins/usdShaders.so' (handle=0x7fd79e07c800)
Loaded plugin 'usdShaders' in a secondary thread.
Loading plugin 'sdrKarmaDiscovery'.
TfDlopen: [opening] '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaDiscovery.so' (flag=2)...
TfDlopen: [opened] '/opt/hfs20.5/houdini/dso/usd/BRAY_SdrKarmaDiscovery.so' (handle=0x7fd79e07d400)
Loaded plugin 'sdrKarmaDiscovery' in a secondary thread.
Warning (lib.render): /sopimport1/curve_0.primvars:rot: VtArray<GfMatrix3d> not translated
Warning (lib.render): /sopimport1/curve_0.primvars:orient: VtArray<GfQuatf> not translated
Warning (lib.render): /sopimport1/curve_0.primvars:prevP: VtArray<GfVec3d> not translated
Chunked message 9caab852-883e-4093-803e-0184e5bcef09 is complete, recreating from 3 chunks
Starting Rendering (syncId:2)
{trace:mcrt} stage renderPrep start 779714d7-d720-4392-ab84-51dfc1b8b8ae f4d1a1b8-62dd-4ec9-87ef-6616dc5e89ab
stdout Render prep time = 00:00:06.793
{trace:mcrt} stage shading start 0.461918 779714d7-d720-4392-ab84-51dfc1b8b8ae f4d1a1b8-62dd-4ec9-87ef-6616dc5e89ab
{trace:mcrt} stage shading complete 1 779714d7-d720-4392-ab84-51dfc1b8b8ae f4d1a1b8-62dd-4ec9-87ef-6616dc5e89ab
stdout 00:00:07   14.0 GB | ---------- Time ------------------------------------------
stdout 00:00:07   14.0 GB | Render time                      = 00:00:00.247000
stdout 00:00:07   14.0 GB | Total time                       = 00:00:07.093000

The issue that manifests is that the material nodes are blank in the stage details panel, and when the material is assigned to the geometry, it doesn't render. If the default material is applied, everything renders without errors.

usdview does not complain about this. It's output looks something like this:

...
Will check plugin info paths:
    /opt/openmoonray/plugin/pxr
    /opt/hfs20.5/dsolib/usd_plugins
    /opt/hfs20.5/houdini/dso/usd_plugins
    /opt/hfs20.5/dsolib/usd_plugins
Will read plugin info /opt/openmoonray/plugin/pxr/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/plugInfo.json
Globbing plugin info path /opt/openmoonray/plugin/pxr/*/
Will read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderParser/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderParser/plugInfo.json
Registering shared library plugin 'moonrayShaderParser' at '/opt/openmoonray/plugin/moonrayShaderParser.so'.

Will read plugin info /opt/openmoonray/plugin/pxr/hd_moonray/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/hd_moonray_debug/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderDiscovery/plugInfo.json
Will read plugin info /opt/openmoonray/plugin/pxr/hdMoonrayAdapters/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hd_moonray_debug/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/moonrayShaderDiscovery/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hd_moonray/plugInfo.json
 Did read plugin info /opt/openmoonray/plugin/pxr/hdMoonrayAdapters/plugInfo.json
Registering shared library plugin 'hd_moonray_debug' at '/opt/openmoonray/plugin/hd_moonray_debug.so'.

Registering shared library plugin 'hd_moonray' at '/opt/openmoonray/plugin/hd_moonray.so'.

Registering shared library plugin 'moonrayShaderDiscovery' at '/opt/openmoonray/plugin/moonrayShaderDiscovery.so'.

Registering shared library plugin 'hdMoonrayAdapters' at '/opt/openmoonray/plugin/hdMoonrayAdapters.so'.
...

Thanks!

Answered by cwpenhale

Jul 18, 2025

Resolved! My shader_json folder (which I generated with sudo to get around permissions issues) did not generate the appropriate files.

rux@rux /opt/openmoonray $ ls -l shader_json |wc -l
175
rux@rux /opt/openmoonray $ ls -l shader_json.old/ |wc -l
13
rux@rux /opt/openmoonray $ ls -l shader_json.old/
total 120
-rw-r--r-- 1 root root   292 Jul 15 13:20 GeometrySet.json
-rw-r--r-- 1 root root   562 Jul 15 13:20 Joint.json
-rw-r--r-- 1 root root  5144 Jul 15 13:20 Layer.json
-rw-r--r-- 1 root root   411 Jul 15 13:20 LightFilterSet.json
-rw-r--r-- 1 root root   374 Jul 15 13:20 LightSet.json
-rw-r--r-- 1 root root   856 Jul 15 13:20 Metadata.json
-rw-r--r-- 1 root root 16939 Jul 15 13:20 Rende…

View full answer

cwpenhale · 2025-07-15T23:51:36Z

cwpenhale
Jul 15, 2025
Author

Contents of the plugins folder

/opt/openmoonray/plugin $ tree
.
├── hdMoonrayAdapters.so
├── hd_moonray.so
├── hd_moonray_debug.so
├── houdini
│   ├── UsdRenderers.json
│   ├── moonray_nodes.json
│   ├── otls
│   │   ├── Vop::DW_MOONRAY::AttributeMap::1.hda
│   │   ├── Vop::DW_MOONRAY::AxisAngleMap::1.hda
│   │   ├── Vop::DW_MOONRAY::BaseMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::BaseVolume::1.hda
│   │   ├── Vop::DW_MOONRAY::BlendDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::BlendMap::1.hda
│   │   ├── Vop::DW_MOONRAY::CheckerboardMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ClampDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ClampMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectContrastMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectGainOffsetMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectGammaMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectHsvMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectHueShiftMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectLegacyMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectNukeMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectSaturationMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ColorCorrectTMIMap::1.hda
│   │   ├── Vop::DW_MOONRAY::CombineDisplacement::1.hda
│   │   ├── Vop::DW_MOONRAY::CombineNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ConstantColorMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ConstantDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ConstantScalarMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ConvolutionDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::CurvatureMap::1.hda
│   │   ├── Vop::DW_MOONRAY::CutoutVolume::1.hda
│   │   ├── Vop::DW_MOONRAY::DebugMap::1.hda
│   │   ├── Vop::DW_MOONRAY::DeformationMap::1.hda
│   │   ├── Vop::DW_MOONRAY::DirectionalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::DiscretizeDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::DistortNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::DofDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaAdjustMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaBaseMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaColorCorrectMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaEmissiveMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaFabricMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaLayerMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaMetalMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaMixMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaRefractiveMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaSkinMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaSolidDielectricMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaSwitchMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaToonMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaTwoSidedMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::DwaVelvetMaterial::2.hda
│   │   ├── Vop::DW_MOONRAY::ExtraAovMap::1.hda
│   │   ├── Vop::DW_MOONRAY::FloatToRgbMap::1.hda
│   │   ├── Vop::DW_MOONRAY::GlitterFlakeMaterial::2.hda
│   │   ├── Vop::DW_MOONRAY::GradientMap::1.hda
│   │   ├── Vop::DW_MOONRAY::HairColorCorrectMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::HairColorPresetsMap::1.hda
│   │   ├── Vop::DW_MOONRAY::HairColumnMap::1.hda
│   │   ├── Vop::DW_MOONRAY::HairDiffuseMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::HairLayerMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::HairMap::1.hda
│   │   ├── Vop::DW_MOONRAY::HairMaterial::3.hda
│   │   ├── Vop::DW_MOONRAY::HairToonMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::HalftoneDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::HsvToRgbMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ImageDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ImageMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ImageNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::LODMap::1.hda
│   │   ├── Vop::DW_MOONRAY::LayerMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ListMap::1.hda
│   │   ├── Vop::DW_MOONRAY::MacroFlakeMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::MultiChannelToFloatMap::1.hda
│   │   ├── Vop::DW_MOONRAY::NoiseMap::1.hda
│   │   ├── Vop::DW_MOONRAY::NoiseMap::2.hda
│   │   ├── Vop::DW_MOONRAY::NoiseWorleyMap::1.hda
│   │   ├── Vop::DW_MOONRAY::NoiseWorleyMap::2.hda
│   │   ├── Vop::DW_MOONRAY::NormalDisplacement::1.hda
│   │   ├── Vop::DW_MOONRAY::NormalToRgbMap::1.hda
│   │   ├── Vop::DW_MOONRAY::OpDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::OpMap::1.hda
│   │   ├── Vop::DW_MOONRAY::OpenVdbMap::1.hda
│   │   ├── Vop::DW_MOONRAY::OpenVdbMap::2.hda
│   │   ├── Vop::DW_MOONRAY::OverDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectCameraMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectCameraMap::2.hda
│   │   ├── Vop::DW_MOONRAY::ProjectCameraNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectCylindricalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectPlanarMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectPlanarNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectSphericalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectTriplanarMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectTriplanarMap::2.hda
│   │   ├── Vop::DW_MOONRAY::ProjectTriplanarNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ProjectTriplanarNormalMap::2.hda
│   │   ├── Vop::DW_MOONRAY::ProjectTriplanarUdimMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RampDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::RampMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RandomMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RandomNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RaySwitchMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::RemapDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::RemapMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToFloatDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToFloatMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToHsvDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToHsvMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToLabMap::1.hda
│   │   ├── Vop::DW_MOONRAY::RgbToNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::ShadowDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::SwitchColorMap::1.hda
│   │   ├── Vop::DW_MOONRAY::SwitchDisplacement::1.hda
│   │   ├── Vop::DW_MOONRAY::SwitchFloatMap::1.hda
│   │   ├── Vop::DW_MOONRAY::SwitchMaterial::1.hda
│   │   ├── Vop::DW_MOONRAY::SwitchNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::TangentSpaceDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ToonDisplayFilter::1.hda
│   │   ├── Vop::DW_MOONRAY::ToonMap::1.hda
│   │   ├── Vop::DW_MOONRAY::TransformNormalMap::1.hda
│   │   ├── Vop::DW_MOONRAY::TransformSpaceMap::1.hda
│   │   ├── Vop::DW_MOONRAY::UVTransformMap::1.hda
│   │   ├── Vop::DW_MOONRAY::VectorDisplacement::1.hda
│   │   └── Vop::DW_MOONRAY::WireframeMap::1.hda
│   ├── python2.7libs
│   │   └── pythonrc.py
│   ├── python3.11libs -> python3.9libs
│   ├── python3.9libs
│   │   └── pythonrc.py
│   └── soho
│       └── parameters
│           ├── HdMoonrayRendererDebugPlugin_Viewport.ds
│           ├── HdMoonrayRendererPlugin_Viewport.ds
│           ├── moonray_AttributeMap.ds
│           ├── moonray_AxisAngleMap.ds
│           ├── moonray_BakeCamera.ds
│           ├── moonray_BarnDoorLightFilter.ds
│           ├── moonray_BaseMaterial.ds
│           ├── moonray_BaseVolume.ds
│           ├── moonray_BlendMap.ds
│           ├── moonray_BoxGeometry.ds
│           ├── moonray_CheckerboardMap.ds
│           ├── moonray_ClampMap.ds
│           ├── moonray_ColorCorrectContrastMap.ds
│           ├── moonray_ColorCorrectGainOffsetMap.ds
│           ├── moonray_ColorCorrectGammaMap.ds
│           ├── moonray_ColorCorrectHsvMap.ds
│           ├── moonray_ColorCorrectHueShiftMap.ds
│           ├── moonray_ColorCorrectLegacyMap.ds
│           ├── moonray_ColorCorrectMap.ds
│           ├── moonray_ColorCorrectNukeMap.ds
│           ├── moonray_ColorCorrectSaturationMap.ds
│           ├── moonray_ColorCorrectTMIMap.ds
│           ├── moonray_ColorRampLightFilter.ds
│           ├── moonray_CombineDisplacement.ds
│           ├── moonray_CombineLightFilter.ds
│           ├── moonray_CombineNormalMap.ds
│           ├── moonray_ConstantColorMap.ds
│           ├── moonray_ConstantScalarMap.ds
│           ├── moonray_CookieLightFilter.ds
│           ├── moonray_CookieLightFilter_v2.ds
│           ├── moonray_CurvatureMap.ds
│           ├── moonray_CutoutVolume.ds
│           ├── moonray_CylinderLight.ds
│           ├── moonray_DebugMap.ds
│           ├── moonray_DecayLightFilter.ds
│           ├── moonray_DeformationMap.ds
│           ├── moonray_DirectionalMap.ds
│           ├── moonray_DiskLight.ds
│           ├── moonray_DistantLight.ds
│           ├── moonray_DistortNormalMap.ds
│           ├── moonray_DomeMaster3DCamera.ds
│           ├── moonray_DwaAdjustMaterial.ds
│           ├── moonray_DwaBaseMaterial.ds
│           ├── moonray_DwaColorCorrectMaterial.ds
│           ├── moonray_DwaEmissiveMaterial.ds
│           ├── moonray_DwaFabricMaterial.ds
│           ├── moonray_DwaLayerMaterial.ds
│           ├── moonray_DwaMetalMaterial.ds
│           ├── moonray_DwaMixMaterial.ds
│           ├── moonray_DwaRefractiveMaterial.ds
│           ├── moonray_DwaSkinMaterial.ds
│           ├── moonray_DwaSolidDielectricMaterial.ds
│           ├── moonray_DwaSwitchMaterial.ds
│           ├── moonray_DwaToonMaterial.ds
│           ├── moonray_DwaTwoSidedMaterial.ds
│           ├── moonray_DwaVelvetMaterial_v2.ds
│           ├── moonray_EnvLight.ds
│           ├── moonray_ExtraAovMap.ds
│           ├── moonray_FloatToRgbMap.ds
│           ├── moonray_Geometry.ds
│           ├── moonray_GlitterFlakeMaterial_v2.ds
│           ├── moonray_Global.ds
│           ├── moonray_GradientMap.ds
│           ├── moonray_HairColorCorrectMaterial.ds
│           ├── moonray_HairColorPresetsMap.ds
│           ├── moonray_HairColumnMap.ds
│           ├── moonray_HairDiffuseMaterial.ds
│           ├── moonray_HairLayerMaterial.ds
│           ├── moonray_HairMap.ds
│           ├── moonray_HairMaterial_v3.ds
│           ├── moonray_HairToonMaterial.ds
│           ├── moonray_HsvToRgbMap.ds
│           ├── moonray_ImageMap.ds
│           ├── moonray_ImageNormalMap.ds
│           ├── moonray_IntensityLightFilter.ds
│           ├── moonray_LODMap.ds
│           ├── moonray_LayerMap.ds
│           ├── moonray_Light.ds
│           ├── moonray_ListMap.ds
│           ├── moonray_MacroFlakeMaterial.ds
│           ├── moonray_MeshLight.ds
│           ├── moonray_MultiChannelToFloatMap.ds
│           ├── moonray_NoiseMap.ds
│           ├── moonray_NoiseMap_v2.ds
│           ├── moonray_NoiseWorleyMap.ds
│           ├── moonray_NoiseWorleyMap_v2.ds
│           ├── moonray_NormalDisplacement.ds
│           ├── moonray_NormalToRgbMap.ds
│           ├── moonray_OpMap.ds
│           ├── moonray_OpenVdbMap.ds
│           ├── moonray_OpenVdbMap_v2.ds
│           ├── moonray_OrthographicCamera.ds
│           ├── moonray_Override.ds
│           ├── moonray_PerspectiveCamera.ds
│           ├── moonray_ProjectCameraMap.ds
│           ├── moonray_ProjectCameraMap_v2.ds
│           ├── moonray_ProjectCameraNormalMap.ds
│           ├── moonray_ProjectCylindricalMap.ds
│           ├── moonray_ProjectPlanarMap.ds
│           ├── moonray_ProjectPlanarNormalMap.ds
│           ├── moonray_ProjectSphericalMap.ds
│           ├── moonray_ProjectTriplanarMap.ds
│           ├── moonray_ProjectTriplanarMap_v2.ds
│           ├── moonray_ProjectTriplanarNormalMap.ds
│           ├── moonray_ProjectTriplanarNormalMap_v2.ds
│           ├── moonray_ProjectTriplanarUdimMap.ds
│           ├── moonray_RampMap.ds
│           ├── moonray_RandomMap.ds
│           ├── moonray_RandomNormalMap.ds
│           ├── moonray_RaySwitchMaterial.ds
│           ├── moonray_RdlCurveGeometry.ds
│           ├── moonray_RdlInstancerGeometry.ds
│           ├── moonray_RdlMeshGeometry.ds
│           ├── moonray_RdlPointGeometry.ds
│           ├── moonray_RectLight.ds
│           ├── moonray_RemapMap.ds
│           ├── moonray_RgbToFloatMap.ds
│           ├── moonray_RgbToHsvMap.ds
│           ├── moonray_RgbToLabMap.ds
│           ├── moonray_RgbToNormalMap.ds
│           ├── moonray_RodLightFilter.ds
│           ├── moonray_SphereGeometry.ds
│           ├── moonray_SphereLight.ds
│           ├── moonray_SphericalCamera.ds
│           ├── moonray_SpotLight.ds
│           ├── moonray_SwitchColorMap.ds
│           ├── moonray_SwitchDisplacement.ds
│           ├── moonray_SwitchFloatMap.ds
│           ├── moonray_SwitchMaterial.ds
│           ├── moonray_SwitchNormalMap.ds
│           ├── moonray_ToonMap.ds
│           ├── moonray_TransformNormalMap.ds
│           ├── moonray_TransformSpaceMap.ds
│           ├── moonray_UVTransformMap.ds
│           ├── moonray_UsdGeometry.ds
│           ├── moonray_UsdInstanceGeometry.ds
│           ├── moonray_VdbGeometry.ds
│           ├── moonray_VdbLightFilter.ds
│           ├── moonray_VectorDisplacement.ds
│           └── moonray_WireframeMap.ds
├── moonrayShaderDiscovery.so
├── moonrayShaderParser.so
└── pxr
    ├── hdMoonrayAdapters
    │   └── plugInfo.json
    ├── hd_moonray
    │   └── plugInfo.json
    ├── hd_moonray_debug
    │   └── plugInfo.json
    ├── moonrayShaderDiscovery
    │   └── plugInfo.json
    ├── moonrayShaderParser
    │   └── plugInfo.json
    └── plugInfo.json

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cwpenhale · 2025-07-15T23:52:28Z

cwpenhale
Jul 15, 2025
Author

my bash environment:

# MOONRAY #
export MOONRAY_ROOT=/opt/openmoonray
export PATH=$MOONRAY_ROOT/bin:/opt/hfs20.5/python/bin:/opt/hfs20.5/bin:$PATH
export PYTHONPATH=/opt/hfs20.5/python/lib/python3.11
export RDL2_DSO_PATH=$MOONRAY_ROOT/rdl2dso
export REZ_MOONRAY_ROOT=$MOONRAY_ROOT
export ARRAS_SESSION_PATH=$MOONRAY_ROOT/sessions
export MOONRAY_CLASS_PATH=$MOONRAY_ROOT/shader_json
export PXR_PLUGINPATH_NAME=$MOONRAY_ROOT/plugin/pxr:/opt/hfs20.5/dsolib/usd_plugins:/opt/hfs20.5/houdini/dso/usd_plugins
#export PXR_PLUGINPATH_NAME=$MOONRAY_ROOT/plugin/pxr/moonrayShaderDiscovery:$MOONRAY_ROOT/plugin/pxr/moonrayShaderParser:$PXR_PLUGINPATH_NAME
export PXR_PLUGIN_PATH=$PXR_PLUGINPATH_NAME
export HOUDINI_PATH=/opt/hfs20.5/houdini:$MOONRAY_ROOT/plugin:$MOONRAY_ROOT/plugin/houdini
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$MOONRAY_ROOT/lib64:/usr/lib64
export LD_PRELOAD="/opt/openmoonray/lib64/librendering_pbr.so:/opt/openmoonray/lib64/libcommon_mcrt_util.so"
export HDMOONRAY_ENABLE_DENOISE=1
export HDMOONRAY_DENOISE_ALBEDO_GUIDING=1
export HDMOONRAY_DENOISE_NORMAL_GUIDING=1
export HDMOONRAY_LOGLEVEL=3
export HDMOONRAY_DEBUG=1
export HDMOONRAY_RDLA_OUTPUT=/home/rux/scene
export TF_DEBUG="PLUG_* TF_DLOPEN PLUG_REGISTRATION PLUG_INFO_SEARCH"

0 replies

cwpenhale · 2025-07-18T04:52:11Z

cwpenhale
Jul 18, 2025
Author

I think I've got this figured out. RE: the materials not loading correctly in Houdini, I remember I used this advice before, and it worked this time as well. I replaced plugins/houdini with this https://github.com/dreamworksanimation/moonray_dcc_plugins/tree/v1.0.0.0

Now the materials are showing up in Houdini as I expect, and Moonray is rendering the mtlx standard material. However, when I plug in the Moonray BaseMaterial into the graph, my sphere stops rendering.

What should my troubleshooting next steps be?

RE the below:

Traceback (most recent call last):
  File "/opt/hfs20.5.654/python/lib/python3.11/site-packages-forced/shiboken2/files.dir/shibokensupport/feature.py", line 139, in _import
    return original_import(name, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'pxr.MoonrayShaderParser'

This has been addressed a few times here: #66 (comment)

0 replies

cwpenhale · 2025-07-18T19:59:02Z

cwpenhale
Jul 18, 2025
Author

Resolved! My shader_json folder (which I generated with sudo to get around permissions issues) did not generate the appropriate files.

rux@rux /opt/openmoonray $ ls -l shader_json |wc -l
175
rux@rux /opt/openmoonray $ ls -l shader_json.old/ |wc -l
13
rux@rux /opt/openmoonray $ ls -l shader_json.old/
total 120
-rw-r--r-- 1 root root   292 Jul 15 13:20 GeometrySet.json
-rw-r--r-- 1 root root   562 Jul 15 13:20 Joint.json
-rw-r--r-- 1 root root  5144 Jul 15 13:20 Layer.json
-rw-r--r-- 1 root root   411 Jul 15 13:20 LightFilterSet.json
-rw-r--r-- 1 root root   374 Jul 15 13:20 LightSet.json
-rw-r--r-- 1 root root   856 Jul 15 13:20 Metadata.json
-rw-r--r-- 1 root root 16939 Jul 15 13:20 RenderOutput.json
-rw-r--r-- 1 root root 52231 Jul 15 13:20 SceneVariables.json
-rw-r--r-- 1 root root   912 Jul 15 13:20 ShadowReceiverSet.json
-rw-r--r-- 1 root root   377 Jul 15 13:20 ShadowSet.json
-rw-r--r-- 1 root root   587 Jul 15 13:20 TraceSet.json
-rw-r--r-- 1 root root  6092 Jul 15 13:20 UserData.json

I changed the permissions on the folder so that I could run rdl2_json_exporter with the same environment variables I was running Houdini with (which were changed when I ran sudo rdl2_json_exporter. With the appropriate environment variables, all of the appropriate files were created and the hydra delegate works as expected.

Hope this helps someone in the future!

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