VRay for Rhino Manual

Open V-Ray for Rhino - - Render Options

The V-Ray for Rhino Options controls all rendering parameters. You can open this Render Options from tab above or click directly on the VRay Options.

Save and Load Option settings

There are many Options settings in V-Ray for Rhino. Users can save the current settings, or save different files according to different scenes, different render quality settings, or different render engines.

From File>Save to save Options setting. Use .visopt as the file format. It's about 2KB in file size. When the Rhino file is saved, all changes in V-Ray Options setting will also be saved.

Use File>Load to load saved .visopt Options files. It will replace the current settings .Use Restore Defaults to restore the original V-Ray settings.

Open file Cups-Original.3dm. There are 3 cups and a very large floor in the file. All objects are not assigned to any material and there is no light in the scene as well. Please click the blue render icon from above directly and you will get this gray tone image without changing any setting in the V-Ray Options.

Open V-Ray Options window and pull down the Global Switches, Environment and Indirect Illumination taps as illustrated below.

1. Global Switches Please uncheck Hidden Lights and Default Lights under the Lighting section. Hidden Lights means hiding the lights from the scene. It is used when the users don 't want to see any light while modeling in the scene. When uncheck the Hidden Lights box, those hidden lights will not affect the V-Ray render . To prevent these hidden lights affect the final render output , we recommend you uncheck the Hidden Lights first. Default Lights means V-Ray built-in lights. Users can not see nor edit these lights from the scene. If one uncheck the Default Lights and does not check the GI below, the render will turn out totally black. We also recommend you check the Low thread priority under the Render section so that it won't affect other programs while rendering with V-Ray. 2. Indirect Illumination Please check "On" under Indirect Illumination on, also called Global Illumination. We will explain those green dot items more later. 3. Environment Environment controls the contract, color, and HDR of the Global Illumination. Please check the boxes before GI and Background. Please adjust those three items then select the blue render icon on the top. You will get the image with Global Illumination. Compare to the image without Global Illumination, you can see the objects don't have dark shadow because the objects get light from all around.

The image is in blue tone is because the default environment color of V-Ray is set in light blue of R-204, G224, B225. Please check the box under GI to enter the color selections. Change the Sat from 51 to 5. The color is changed to light blue of R250, G252, B255, which is very close to white. Click OK to exit then click on the blue render icon to color the image. The image color becomes very close to white like the image below.

Because the cups and floor are not assigned to any materials, V-Ray gives the objects Rhino's default white layer as material. To know how to assign the materials to the objects and make adjustments, we need to open the Properties tab.

Two ways to assign materials in V-Ray

1. Press Ctrl+A to select all the objects in the scene then click the Object under the Properties window to select material. The objects are assigned materials by layers now. Please click Plug-in, there will show three tabs of Browse, Edit and Create below.

2. Click the Browse button, in the choose material window, select Default_VRay_Material, then click apply.

3. Now the objects are applied with materials, so the Edit button is selectable. You can click on the Edit button to open the Material Editor to apply the materials.