Hip Driver Renderer

Given a hip file and path to a ROP node inside it - this node will render that ROP node for the frame range defined by frames attribute.

For each frame it will produce a child task if second input is connected at the time of the processing.

Parameters

Hip Path:

Path to the hip file to render

Mask As Different Hip:

It is possible to open one hip, but make it look for all expressions inside like it’s a different hip file.

This can be useful if actual hip file is relocated, but it’s contents expects it to be in a different place, for example when a hip file is copied when submitted to a farm manager.

mask hip path:

Hip file path to mask as. This path does not have to exist

Rop Node Path:

Path to the ROP(driver) node to render inside the hip file

ignore rop inputs:

If True - inputs plugged into the givern Rop Node will be ignored. This is usually the desirable behaviour

Set These Attribs As Context:

Task attributes that match this mask will be set as Context Attributes in houdini session

Render Whole Range (needed for alembics):

Instead of rendering frame by frame, the whole frame range will be rendered with a single .render() call. Alembics require this to be set.

Skip If Result Already Exists:

Skip rendering if expected output already exists

Generate Children For Skipped:

If set, children tasks will still be generated for skipped frames. This is usually the desired behaviour

Override Output Path:

If set - allows overriding output path for the rop node.

Use Specific Parameter Name For Output:

If set - allows overriding the name of the parameter on houdini node that contains output path.

Attributes To Copy To Children:

Task attributes that match this mask will be copied to children tasks

Detail Attributes To Extract:

Geometry detail attributes that match this mask will be copied back to the Lifeblood task

Detail Intrinsics To Extract:

Geometry detail intrinsic attributes that match this mask will be copied back to the Lifeblood task

Attributes Set

These attributes are set on children tasks

hipfile:

Is set to the hip file path that was processed

file:

Is set to Rop Node’s output path for the generated file

Devices

This node understands the following device types:

gpu:

Treated as GPU OpenCL device

tags used:

• opencl_dev - has format <device type>:<device vendor>:<device number>

  • <device type> - value identifying this device through houdini’s HOUDINI_OCL_DEVICETYPE variable

  • <device vendor> - value identifying this device through houdini’s HOUDINI_OCL_VENDOR variable

  • <device number> - value identifying this device through houdini’s HOUDINI_OCL_DEVICENUMBER variable

  Each value can be empty, in that case corresponding houdini’s environment variable is not set, it’s up to the user to configure this value correctly.

  Example values: "GPU::0", "GPU:Intel(R) Corporation", GPU:NVIDIA Corporation:0