> [!abstract] Summary > **Lookdev in Houdini / Solaris** — viewer renderer selection (Karma / Arnold / OpenGL), the SOP Create node for working in OBJ context then importing into LOPs, **Render Geometry Settings** for per-prim render attributes (visibility, ray overrides, subdivision), **Material Library** for shader creation, **Render Settings** for camera and resolution, and AOVs via **Render Var / Render Product / Render Settings**. --- # Viewer - **Perspective viewer** → pick the renderer for the view: **Karma**, **Arnold**, or **OpenGL**. --- # SOP Create - Lets you work in the **OBJ context** (SOP networks) inside a LOP graph, then import the result automatically. --- # Render Geometry Settings - **Node:** `RenderGeometrySettings`. - Attach **render attributes** to a specific geometry prim. - Examples: **Visible in refraction**, **Ray overrides**, **Subdivide**, etc. --- # Material Library - Where you **create shaders** (Arnold, Karma MaterialX, etc.). - Lets you **assign materials** to specific geometry. --- # Render Settings - **Node:** `RenderSettings`. - Connects the **camera**. - Sets **resolution**. - Carries renderer-specific **render settings** (e.g. an Arnold-specific RenderSettings LOB). --- # AOVs ### Render Var - Creates an **AOV**. - See the Arnold / Karma docs for the right channel definitions. ### Render Product - A **bundle of Render Vars** with a single output location. ### Render Settings - **Ordered Products** — link the Render Products in the order they should be written. ### Display in the Viewport ![[image-20230509.png]] --- # RDO (Studio Workflow) ## UI - When you want to render, display **Final render** in the Houdini GL viewport: - ![[2. M.O.R.P.H.E.U.S/Blue Pills/3D/LOOKDEV/Attachments/6.41 RDO HOUDINI LOOKDEV/image-20230220.png]] ## Scene View Since Solaris uses **Hydra**, the scene view goes through a **delegate** — Hydra's bridge between the renderer and the viewport. --- # 🔗 Related - [[SOLARIS MOC|SOLARIS MOC]]. - [[../KARMA/KARMA MOC|KARMA MOC]] — Karma renderer specifics. - [[../../LOOKDEV/LOOKDEV KNOWLEDGE MOC|LOOKDEV Knowledge MOC]] — cross-renderer theory. - [[NOTES/HOUDINI Solaris custom AOV from shading|Custom AOV from Shading]]. - [[../../../OUT OF PUBLISH/KNOWLEDGE OUT OF PUBLISH/STUDIO/RODEO/6.03 RDO LOOKDEV USD publish SbS|RDO Lookdev USD publish (legacy)]].