How Do I Use Light Gen in VRay SketchUp?

Have you ever wondered how to use the Light Gen feature in VRay SketchUp? Well, look no further! In this tutorial, we will guide you through the process step by step.

Step 1: Accessing the Light Gen feature

To start using Light Gen in VRay SketchUp, you need to first access this feature. Open your SketchUp project and navigate to the Extensions tab.

Click on VRay and select “Light Gen” from the dropdown menu. A new dialog box will appear.

Step 2: Setting up the Light Gen parameters

The Light Gen dialog box allows you to adjust various parameters to customize your lighting setup. Let’s go through each parameter:

  • Scene Scale: This parameter determines the scale of your scene. Adjust it according to your project’s requirements.
  • Camera Height: Set the height of your camera viewpoint from the ground plane.

    This affects how light is distributed in your scene.

  • Sun Intensity: Controls the intensity of sunlight in your scene. Increase or decrease this value to achieve the desired effect.
  • Sky Intensity: Similar to sun intensity, this parameter adjusts the brightness of the sky in your scene.
  • Sun Size: Adjusts the apparent size of the sun in your rendering. Larger values create softer shadows.

Step 3: Generating lights with Light Gen

Once you have set up all the parameters according to your preferences, it’s time to generate lights using Light Gen. Simply click on the “Generate” button in the dialog box, and VRay SketchUp will automatically create a set of lights based on the specified parameters.

Step 4: Fine-tuning the generated lights

After generating the lights, you can further refine your lighting setup by adjusting individual light properties. To do this, go to the VRay Asset Editor and navigate to the Lights tab. Here, you can modify various attributes like color, intensity, and shadow settings for each light source.


If you want to add additional lights or make manual adjustments, you can do so by creating new light sources or editing existing ones in the VRay Asset Editor.

Step 5: Rendering your scene

Once you are satisfied with your lighting setup, it’s time to render your scene. Click on the Render button in VRay SketchUp and wait for the magic to happen! The generated lights will illuminate your model and bring it to life.

Congratulations! You have successfully learned how to use Light Gen in VRay SketchUp. With this powerful feature at your disposal, you can create stunning visualizations with ease.

Remember to experiment with different parameter values and lighting setups to achieve the desired results. Happy rendering!