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Save to Disk
Begins the render with the last render control settings.
Controls
Opens the Render Control window, which allows you to adjust the render parameters before rendering.
Render with Take
Uses the settings in a particular take while rendering. Choose Current to use the current take when rendering.
Render
Begins the render with the last render control settings.
Controls
Opens the render control dialog to allow adjustments of the render parameters before rendering.
Standard ¶
Camera
The camera to render the scene from.
Visible Objects
Space-separated list of objects which will be rendered. Use *
to render all objects (the default). You can use wildcards (for
example prop_*
) and bundle references
to specify objects.
Visible atmosphere
Space-separated list of atmosphere objects which will be
rendered. Use *
to render all atmosphere objects (the
default). You can use wildcards (for example fog_*
) and
bundle references to specify atmosphere
objects.
Active Lights
Space-separated list of lights which will illuminate the scene.
Use *
to use all lights. You can use wildcards (for example
key_*
) and bundle references to specify
lights.
Unload SOPs
Unload SOP geometry after used by the render.
Output Picture
The picture or device to be rendered.
Image Format
The file format (for example, Houdini pic) of the rendered image.
Valid Frame Range
Controls whether this render node outputs the current frame or the image sequence specified in the Start/End/Inc parameters.
Render Current Frame
Export only the current frame.
Render Frame Range
Export the frames in the Start/End/Inc frame range, but also allow exporting of frames referenced by in-range frames.
Render Frame Range Only (Strict)
Only export the frames in the Start/End/Inc frame range. Do not allow exporting of other frames, including frames referenced by in-range frames.
Start/End/Inc
Specifies the range of frames to render (start frame, end frame, and increment). All of the values can be floating point values. The range is inclusive.
The Start/End/Inc parameters determine the values of the below local variables for the output driver.
$NRENDER
The number of frames to be rendered by the output driver.
$N
The current frame being rendered (starting at 1 and going to
$NRENDER
).
For example, if the parameters are set to:
Start |
End |
Inc |
---|---|---|
10.5 |
12 |
0.5 |
… there will be 4 frames rendered (10.5, 11, 11.5, and 12), so $NRENDER
will have a value of 4.
$N
will have the following values at each frame:
Frame |
|
---|---|
10.5 |
1 |
11 |
2 |
11.5 |
3 |
12 |
4 |
Axis System
Determines the axis system convention.
Y Up (Right-handed)
Right-handed Y Up convention (default): Up = +Y, Front = +Z, Cross = +X. Use this for Houdini, Maya Y-Up, MotionBuilder, and OpenGL.
Y Up (Left-handed)
Left-handed Y Up convention: Up = +Y, Front = +Z, Cross = -X. Use this for LightWave and DirectX.
Z Up (Right-handed)
Right-handed Z Up convention: Up = +Z, Front = -Y, Cross = +X. Use this for Maya Z-Up and 3ds Max.
Current (Y Up or Z Up Right-handed)
Export using the current scene orientation preference.
Convert to Specified Axis System
When turned on, the FBX scene will be converted from the current Houdini scene orientation to the one specified in Axis System.
Compute Smoothing Groups
When turned on, computes smoothing group information from a mesh’s vertex-mapped normals, and saves to FBX on export.
These normals can be configured on your geometry using the Normal SOP. By setting the Normal SOP’s Add Normals to parameter to Vertices, weighted/split normals can be applied to different polygon groups to specify the soft/hard edge data used to compute smoothing group information. Applying the vertex normals to primitives or edges (set Group Type to Primitives or Edges) and configuring the Cusp Angle results in the expected smoothing data in your output FBX.
Initialize Sim. SOPs
Force all simulation SOPs to be reset.
Generate Script File
Outputs an .ifd file instead of piping the script to mantra.
Binary Script File
Toggles between ascii and binary file formats.
Script File
Filename of the .ifd file.
Render Command
The command used to invoke the renderer. Can be modified with the popup window.
Render in Background
Continue to use Houdini while rendering.
Super Sample
Controls quality of anti-aliasing.
Decouple Ray Sample
Specify an alternate sampling rate for ray tracing. Ray sampling will use this value as a maximum sampling rate, and will take fewer samples if there is low variance.
Note
Decoupled ray sampling is only meaningful for micropolygon rendering. It will be ignored when mantra is run in ray tracing mode.
Resolution
Override camera resolution with values specified.
Pixel Aspect
Override camera pixel aspect ratio.
Fields
Control for rendering video fields.
Motion Blur
Specifies whether motion blur is allowed. If set to set to disallow, motion blur is globally turned off regardless of individual object settings.
Motion Blur Type
The default motion blur type for rendering. This can be overridden by an individual object.
Depth of Field
Turn on rendering of depth of field effects.
Jitter
Limits the amount of jitter. A value of 0 will result in no jitter.
Dither
Controls the amount of dithering performed.
Gamma
Gamma correction factor used.
Scripts ¶
A script command can be specified for execution at various execution points. The expression language selected for the script parameter determines whether the command is in hscript or python.
Prior to execution, this node is automatically set as the global current node.
To run statements from a file, specify the path to the file with
either a .cmd
extension (when the language is set to Hscript) or a .py
extension (when the language is set to Python). Additional arguments to the
script can also be supplied. They will be parsed in a shell-like manner.
Pre-Render Script
Run this script before any rendering.
Pre-Frame Script
Run this script before each frame.
Post-Frame Script
Run this script after each frame.
Post-Render Script
Run this script after all rendering.
Extra parameters ¶
Create Intermediate Directories
When turned on, creates intermediate parent directories for output files as needed. Currently only applies to generated scripts, images, and shadow maps.
Skip Existing Frames
Skip rendering of existing frames. There are three values for this parameter.
Overwrite existing frames
This option will render every frame, regardless whether there’s a file on disk or not.
Skip frames that exist
If there’s a disk file that matches the vm_picture
parameter, no
render will be performed.
Skip frames that are valid images
If a disk file exists, the integrity of the image is checked before rendering is performed. This option incurs the cost of reading the image, but will re-render images that weren’t fully rendered.