This lesson gives a basic sample lesson plan for involving the V-Ray Global Illumination: Exterior Scenes module into a lecture.
- Show real life images of how light fills hard to reach areas and of color bleed and caustic effects
- It’s best to start talking about how GI is helpful to lighting, and connect how light bounces in the real world to how GI tries to calculate and simulate that light behavior.
- For this we have a GI: Overview presentation/lecture prepared as its own module.
- If you wish to not go through the GI Intro presentation, it’s advised to cover a few introductory points at the start of this lecture about GI in general:
- Indirect Lighting– how light bounces and fills areas that direct light does not reach
- Primary vs Secondary Bounces
- Different GI Engines
- Brute Force
- Irradiance Map
- Light Cache
- There are some points specific to GI in an exterior scenario
- Usually light doesn’t bounce too many times because of the open space
- The environment (VRaySky or other HDRi texture) has a great contribution to the overall illumination in the scene
- Using the Quick Settings allows us to affect the final quality of the renderer without having to manually adjust too many options
- Different combinations of Primary + Secondary bounce engines can be employed in different cases. There are some ideas in the PowerPoint presentation that comes with this lesson
- In this cycle you can demonstrate how to quickly try different GI setups, using the Quick Settings
- You can either use the scene and handout we provide or create and use your own materials
In this cycle, you are going to let your students experiment with the provided scene. You may want to give them the provided handout to use as a guideline.