Versions Compared

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

This page gives some basic information on IPR within Houdini as well as on how to incorporate the interactive renderer into your workflow.

 

Overview

...

Section
Column
width55%

V-Ray Interactive Production Rendering (IPR) is an interactive rendering engine that can utilize both CPU and GPU hardware acceleration to see updates to the rendered image in real time as objects, lights, and materials are edited within the scene.

For more information on the settings available for IPR, please see

...

the Export Tab

...

 page and

...

the IPR Tab

...

 page.

Column
width5%

 

Column
width40%

Image Added

 

IPR Workflow within the VFB

...

Before starting an IPR, make sure a camera is set. You can set several cameras and then switch between them.

 

1. Create ROP

Create a V-Ray Renderer node and a V-Ray Renderer IPR node. This can be done in several ways:

Fancy Bullets
typecircle
  • ||out Network||

...

  • V-Ray Renderer; ||out Network||

...

  • V-Ray Renderer IPR
  • Go

...

  • to Render menu

...

  • Create Render

...

  •  node > V-Ray

 

UI Text Box
typeinfo

With V-Ray 5 for Houdini, the V-Ray IPR node is automatically created when you create a V-Ray ROP node in the out Network.

For more information, see the Rendering page.

 

2. Configure ROP 

Configure the render settings within the Export Tab and the IPR Tab of the V-Ray Renderer node. To navigate to the specific tabs, do one of the following:

Fancy Bullets
typecircle
  • ||out Network||

...

  • V-Ray Renderer

...

  •  node > Export

...

  •  tab and ||out Network||

...

  • V-Ray Renderer

...

  •  node > Renderer tab > IPR tab
  • Go to Render menu > Edit Render Node

  • Go to V-Ray menu > Render Settings

...

Go to Render menu > Edit Render Node

...

  • In the V-Ray Shelf, click

...

UI Text Box
typeinfo
Note that the IRP ROP Parm is activated only after you have used the IPR once. By default, the V-Ray IPR node uses the settings from the V-Ray Renderer node
  • the ROP Parm button.

UI Text Box
typetip
You can have multiple V-Ray Renderer and V-Ray Renderer IPR nodes with different settings in a scene.
Section
Column
width20%

 

Column
width60%

Image RemovedImage Added

Column
width20%

 

 

3. Render

Start the IPR in one of the following ways:

Fancy Bullets
typecircle
  • In the V-Ray Shelf, click

...

  • the IPR (VFB)

...

  •  button. This initiates a render process in the VFB.
  • Go to V-Ray

...

  •  menu > Show VFB and select a V-Ray ROP. Then, in the VFB, click

...

  • the Start interactive rendering button.

  • In the V-Ray Shelf, click

...

  • the Show VFB

...

  •  button. Then in the VFB, click

...

  • the Start interactive rendering

...

  •  button.

...

UI Text Box
typetip

If vray/vray_ipr nodes are not aren't created in the out Network, pressing clicking the IPR (VFB) button on the V-Ray Shelf creates them both and an IPR starts a vray node and starts interactive rendering in the VFB. If necessary, configure the render settings as explained above.

Pressing Clicking the Render button or the Show VFB button, also automatically creates a vray /vray_ipr nodes node if none have has been previously created.

Section
Column
width20%

 

Column
width60%

Image RemovedImage Added

Column
width20%

 

...

Section
Column
width20%

 

Column
width60%

Image RemovedImage Added

Column
width20%

 

...

You can have multiple IPR settings in a scene. To select different settings, Shift+Left-click on any of the IPR (VFB) or IPR ROP Parm buttons in the V-Ray Shelf and select the settings you want.

...

Section
Column
width20%

 

Column
width60%

Image RemovedImage Added

Column
width20%

 

 

VFB Render Region

...

In addition, the IPR rendering refreshes whenever the Region Render area is redrawn.

 

Section
Column
width1%

 

Column
width49%

Image Added

Original Region Render

Column
width1%

 

Column
width49%

Image Added

 IPR refreshes as the Region Render area is altered.

 

IPR Workflow in the Viewport

...

V-Ray for Houdini supports interactive rendering in Houdini's Render View. To benefit from this feature, go to Render View > Render button.

UI Text Box
typewarning

Note that the Use V-Ray Frame Buffer option must be disabled.

You can also use the Render Region option, if you go to Scene View (viewport).

 

Section
Column
width50%49%

Image RemovedImage Added

Interactive Rendering in Houdini's Render View

Column
width1%

 

Column
width50%

Image RemovedImage Added

Interactive Rendering using Houdini's Render Region in the Scene View.

...