To get started, make sure to set your desktop to 'Solaris', so you can look at the scene graph tree and see what's going on with your object hierarchy. I've written these notes for people who are familiar with Houdini and have never touched USD, and only introduce the jargon as needed. Once you get familiar with Lops and USD it's not too scary. PRO: Houdini's great node editor and procedural workflowsĪn unfortunate extra con of USD is terminology, read the official docs and you're rapidly drowning in tech jargon.PRO: USD's ability to manipulate hierarchies and scenes.Lops/Solaris attempts to combine the positive aspects of both these things: CON: Needs high level python coding skills to use effectively.PRO: Great at editing hierarchies, scene manipulation.CON: Bad at editing hierarchies, scene manipulation.PRO: Great node editor, great procedural workflows.In broad strokes of Houdini vs USD vs hierarchies, you could say: Lops and USD are capable of lots of other things, will cover those when I get to them! From that perspective there'll likely be a lot of 'ahhhh, is that all there is to this?' moments, as this side of Lops is relatively straightforward. At the university where I taught we used Lops for doing layout, creating sets, all that stuff, so this quickstart is heavily focused on that. The simplest take on Lops is that it's a procedural hierarchy editor. Are you interested in my unsorted tips and tricks, opinions, hacks to make Lops do what I want it to do? Stay on this page then.Do you want a video intro? Ben Skinner and I made one, its 24 mins, and is a good overview of USD and LOPS:.Are you interested in USD, understand Vex fairly well, and want to get a more tech focused overview similar to the Joy of Vex Guide? Then head to the UsdGuide page.Are you just interested in the lighting and rendering side, want to get going quickly? Then head to the LopsLightingQuickstart page.As such, I present to you 4 weapons to start your Lops attack: 9.3 Which renderers have Hydra delegates.

9.1.3 A big sequence in a small studio without USD.9.1 Why is USD interesting if I'm not a big studio?.7.15 Python script lop to read, create, duplicate materials.7.12 Collection based camera frustum subdiv.7.9 Component builder match materials to prims by name.7.6 Primitive selector click vs control click.6.11.2 Modifying point positions with vex.6.10 Set colour and exposure on instanced lights.6.8 Randomise point instancer rotations 2.6.7 Randomise point instancer rotations.

6.6 Update texture paths for usdz assets.

6.1 Assign material Lop with shop_materialpath.

4.8 Use attributes to change render properties.

4.2 Layers and references and save paths.

3.3 Instancer for trees on a groundplane.

3.2.1 A cleaner way to prepare those variants.

2.11 Fancier combining with graft and reference.

2.10 Edit lots of things with a stage manager.

2.9 Lops are not sops part 1: transform lop.

2.5 Merge the sphere and make it a child of the set.

2.4 Merge the sphere and the set, Lops style.

Houdini solaris tutorial