Houdini 21 (Hydra Scene Index mode): native Houdini primitive geometry does not render in hdMoonray

Abierto
#245 4 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
44/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Tranquilo
Stack tecnológico
cmake, cpp

Línea de trabajo

The report identifies Houdini 21 Hydra Scene Index handling of native primitives as the failure area, but gives no source file or test path. Start by locating the Scene Index primitive handling and reproducing with a Sphere LOP in Houdini 21; compare against the working USD asset and Houdini GL results. Done means native primitives render in Moonray in Scene Index mode.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

Under Houdini 21, Hydra runs in Scene Index mode, and hdMoonray doesn't render native Houdini primitives. A Sphere LOP renders blank with Moonray, but renders fine in Houdini GL, and a USD asset (crag) renders fine with Moonray. So the geometry is valid and the delegate works; only native primitives in Scene Index mode fail.

Env: macOS Apple Silicon, Houdini 21.0.631, Houdini USD 23.x (v0_25_5), Python 3.11, hdMoonray 6.41.0.0, scalar exec mode.

Repro:

  1. Sphere LOP in Solaris, render with Moonray → blank.
  2. Same sphere, Houdini GL → renders.
  3. crag.usd with Moonray (Debug) → renders.

Sphere + Moonray (blank):
Image

Sphere + Houdini GL (renders):
Image

crag.usd + Moonray Debug (renders):
Image

Rob Wilson confirmed on ASWF Slack this is a known Scene Index limitation he's working on:

if you are using Houdini 21, it is running Hydra in SceneIndex mode. There are few things that don't work in that mode, including primitive geometry. I'm currently working on fixes for these issues.

Slack thread: https://academysoftwarefdn.slack.com/archives/C0AHKA6E17Z/p1776195285395069

I have a working Houdini 21 / macOS build and am happy to help fix this — pointers on where Scene Index primitive handling lives would be welcome.

Lenguaje dominante
CMake
Estrellas
4.7k
Forks
321
Merge medio
13 min
PR fusionados (30 d)
3

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