This page provides a step-by-step guide to V-Ray Lights and how to texture them.

 

Page Contents

 

Introduction


In this Quick Start tutorial we will be taking a look at V-Ray lights and how to apply textures to them, using a modified version of the headphone scene that mimics a photographic studio.

To follow this tutorial, you will need to have the V-Ray for Modo plugin installed. This tutorial is a companion to go along with the QuickStart video posted on our YouTube channel.

 


 

 

Tutorial Assets


To download the files used in this tutorial, please click on the button below.

Tutorial Steps


1) Scene Observations

For this tutorial we have a studio lighting variation to our headphone scene. Render the scene so we can get a concept of how it looks.

 

 

 

We can get a little more interest and variety into our lighting setup by applying some of V-Ray's textures to the area lights.

2) Create a second camera

Create a new camera and point it directly at one of the area lights so that you can see your changes directly. Then set this as your render camera in the main Modo render properties.

 

 

 

Next, select Area Light. In the Properties tab, enable both the Visible to Camera and Visible to Reflection Rays options so that the effect of the textures applied to the light will be visible during rendering.

 

 

Run V-Ray RT to confirm that everything is working.

 

 

2) Apply a softbox texture to the light

Scroll to the bottom of the Shader Tree and expand the Lights section. Select the area light that the camera is pointing at, and then from the Shader Tree Add Layer menu, scroll down to V-Ray Textures and from the sub-menu select Add V-Ray Softbox.

 

 

Initially no change will be visible, so you need to enable some of the options on the V-Ray Softbox. Enable the Spots On option, and then also enable the Radial Vignette On option. Click the Edit Radial Vignette Gradient button just below it to open the Gradient Editor. Middle click inside the gradient to add a color key at the 100% mark. Make sure the key is selected and the Color Picker set to black.

 

 

This will create a gradation from white in the center to black at the edges of the area light. With the key at 100% selected, change the color from black to a dark grey.

Next enable the Frame Vignette On option and once again click the Edit Radial Vignette Gradient button. Add a new color key at 100% set to black.

This will add a soft frame around the edges of the area light and provide more realistic and interesting reflections.

 

 

 

3) Apply a grid texture to the light

Next you will add a grid texture to the light. In the Shader Tree go to Add Layer > V-Ray Textures Bercon > V-Ray Bercon Tile.

You will need to increase the Scale to 0.5. Reduce the variation by setting the Pattern to 0,1,1 and match the Tile Height and Tile Width to 4.

 

 

In order to get this texture to mix with the softbox texture, we'll need to apply this texture with the Multiply blending mode so that it is mixed with the V-Ray Softbox below it.

 

 

The area light should look something like this:

 


3) Apply a grid texture to the light

Now that we have the light texture set up, we can copy the materials to our other light. 


4) Check and render the scene

In the render properties, reset the camera back to the original scene camera and do a test render with V-Ray RT.

 

 

 

Because of the additional texturing, the lighting will be visibly darker. Select the area light directly above the headphones and increase its Radiance from 4 to 8 to brighten the scene.

 

 

 

Do a production render and compare it with the original untextured result. You should see a substantial improvement with the textured lighting providing much greater depth and interest.