Understand the processes and methods required to create transparent and semi-opaque surfaces using Arnold in Maya 2017. In this video, George discusses the special attributes that need to be set on object geometry in order to render transparency in Arnold for Maya. He shows where in the Attribute Editor these flags are located.
- [Voiceover] Now lets take a look at how to do opacity and transparency in Arnold. Now I separated this out because it is a different process than you would normally see in a renderer. Now only do you have to set it up in the material you also have to set it up in the geometry. So, there is a little bit more process to getting transparent objects in Arnold. So let's go ahead and make this object transparent. I'm going to select it, it's called nurbsSphere1. And we're going to go into Lighting/Shading, assign new material, I'm going to go over to the Arnold tab here and I want to just select an aiStandard material.
So now once I have that selected let's go into the Hypershade and actually author this material. So, I've got aiStandard3 which is this particular material. First thing I'm going to do is go ahead and just turn up the exposure here. Make sure I'm in Arnold. And now with this aiStandard material we can certainly give it a color. So I'm going to ahead and just give it a reasonably nice color here.
And we can go through add some specularity. Now if this is glassy it's going to be a little bit shiny. And then we also have reflection, which we certainly want to add just a little bit. I'm going to add about .1 for a reflection. Now, the key element here for transparency and opacity is the refraction roll out. So, what we need to do is we need to work with the opacity slider. So if I turn this down it will create opacity.
And as you can see it's starting to render that out. You can see that the object is slightly opaque. And we can also affect refractions. So, if we want we can give it an index of refraction. I'm going to give it say an index of say .95. And then we can also turn up the weight of that refraction if we want. So I'm going to turn that up to about .1 or .2. So now that I have this material you can see it's semi-transparent here.
And I have it in the scene. Now, you're not seeing the transparency in the scene, and that's one thing that Arnold's not showing up in the viewports. Now I'm going to go ahead and do a render of this scene. Now with the scene rendered you can see that we've got the color and the reflectivity and the specularity, but we don't have the transparency. And we specifically put it into our shader. Now, in order to actually get opacity into Arnold we need to set a switch on the geometry.
So I'm going to select my geometry. Go into my attribute editor. And under the shape node I should have an Arnold rollout. So it's usually the second tab in and it's the one that says Shape. And what you're looking for is the Opaque tab. Click that off. When you click that off it allows the object to be transparent. And now with opaque turned off let's go ahead and do another render.
And here's the final render. And as he you can see we've got transparency and we've also have a little bit of refraction, as well. So remember, when you work with opacity in Arnold you need to make sure that you go into the attribute editor and turn Opaque off.
It starts with the basics of selecting and manipulating objects and organizing scenes, as you learn the interface and explore Maya's features. Author George Maestri then takes you through polygonal modeling, creating and refining meshes, sculpting, and NURBS modeling. Once you understand modeling, George will show how to create and apply materials to surfaces—adding color, texture, and reflectivity. He'll then integrate cameras, lighting, and depth-of-field effects into the rendering process, using the built-in software renderer, mental ray, and the new Arnold for Maya renderer. Last but not least, he'll show how to add movement and life to your work with Maya's animation tools.
- Getting familiar with the Maya interface
- Configuring viewports and workspaces
- Selecting and manipulating objects
- Creating hierarchies and layers in scenes
- Creating polygonal objects
- Modeling and refining polygonal meshes
- Working with subdivision surfaces
- Sculpting a basic landscape
- NURBs modeling
- Projecting curves on surfaces
- Creating and applying materials and textures
- Adding lights and cameras to a scene
- Adding depth of field and motion blur
- Animating in Maya
Skill Level Beginner
Maya 2016 Extension 2 New Featureswith George Maestri1h 24m Intermediate
Rigging Mechanical Objects in Mayawith George Maestri1h 27m Intermediate
Modeling a Cartoon Character in Mayawith George Maestri3h 6m Intermediate
1. The Maya Interface
2. Select and Manipulate Objects
3. Organize Maya Scenes
4. Create Polygonal Models
5. Model Polygonal Meshes
6. Refine Polygonal Meshes
7. Sculpt Meshes
Sculpt a basic landscape4m 51s
8. NURBS Modeling Techniques
9. Refine NURBS Models
10. Create Materials
11. Apply Materials and Textures
12. Render in Maya
13. Animate in Maya
14. Render in Arnold
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