OctaneRender® for Houdini® has eight types of lights: 

  • Daylight
  • Planetary
  • Texture
  • Octane Light
  • Octane Universal Light
  • Octane Toon Light
  • Mesh Emitters including Blackbody & Texture Emission nodes
  • Spectron Light

You can access these lights from various locations in Houdini. OctaneRender requires at least one light source in order to produce a rendering that is not dark. When you add a Render Target to a scene, the Render Target contains parameters for Environment lighting. This is set to Preview by default (Figure 1).



Lighting Overview



Figure 1: Accessing the Daylight environment from the Render Target node


The Environment light can increase or decrease the overall lighting in a Houdini scene. For instance, if you want a scene without any Environment light contribution so that you can add specific lights to the scene, you would set the Intensity parameter to 0 (Figure 2).



Lighting Overview



Figure 2: The Environment Intensity parameter