--- title: "Rendering with V-Ray for Houdini" canonical: "https://documentation.chaos.com/space/VRAYHOUDINI/113279747/Rendering%20with%20V-Ray%20for%20Houdini" format: markdown --- ## **Rendering with V-Ray** --- Both V-Ray and V-Ray GPU engines support **Production** and **IPR** Rendering modes. The Production Rendering mode utilizes all V-Ray's features and is intended to be used to create a clean production-ready render.  The IPR is a fast active renderer that can update the rendering as you make changes to the scene. The IPR Renderer allows for rendering in the Viewport. With Viewport rendering, the scene is rendered interactively and if changes are made, the rendered result is updated. The IPR renderer always runs in **Progressive** mode, a progressive image sampling mode that refines the details over time. The **Production **rendering mode allows you to switch on/off the Progressive Rendering mode. Switching off the Progressive image sampler automatically activates the **Bucket** image sampler, which takes a variable number of samples per pixel depending on the difference in the intensity of the pixel. In addition, rendering in [Chaos Cloud](https://docs-chaos.atlassian.net/wiki/spaces/VRAYHOUDINI/pages/113279405) is possible through interface integration in V-Ray for Houdini. > ✅ You can have multiple cameras in a scene with different render settings. You can also have multiple V-Ray Renderer and V-Ray Renderer IPR nodes that are configured differently. **Shift+Left-click** the **Render**/**IPR (VFB)** and **ROP Parm**/**IPR ROP Parm** shelf buttons allows you to select different ROP settings. Alternatively, press **Shift + Left-click** the **Show VFB** shelf button to open a context menu of available ROP configurations in the scene. > ✅ > ✅ To switch between different camera views, open the VFB and **hold click** on the **Render **button. > ⚠️ When rendering from the **Render to Disk** button in the V-Ray Renderer node, the camera specified in the **Camera** slot is used. When rendering from the **Render/IPR (VFB)** toolbar buttons or the VFB's **Render **button, you can override the specified camera. ## **Starting V-Ray Render** --- Make sure a camera is set. You can set several cameras in a scene and then switch between them. --- ### **Viewport Rendering** --- ## **Configuring V-Ray Render Settings** ---