3dsmax Tutorial #3 Caustics and Global Illumination

[nakulgupta 0]

In this tutorial we'll see how to create reflective caustics in 3dsmax using the mental ray® renderer.The mental ray® renderer from mental images® is a general-purpose renderer that can generate physically correct simulations of lighting effects, including ray-traced reflections and refractions, caustics, and global illumination. To render with caustics:1. Select each object you want to generate caustics, either by reflection or refraction. Right-click and choose Properties, then on the mental ray panel of the Object Properties dialog, turn on Generate Caustics. 2. Objects receive caustics by default. If you think this value might have changed for the objects you want to receive caustics, use those objects’ Object Properties dialog to make sure Receive Caustics is turned on. Also, to speed rendering time, you might want to turn off Receive Caustics for those objects that don’t need to show them. 3. In the Render Scene dialog, go to the Caustics And Global Illumination rollout and turn on Caustics. 4. Adjust the caustics parameters to get the effect you want. 5. Render the scene. To render with global illumination:1. Select each object you want to generate global illumination. Right-click and choose Properties, then on the mental ray panel of the Object Properties dialog, turn on Generate Global Illumination. 2. Objects receive global illumination by default. If you think this value might have changed for the objects you want to receive global illumination, use those objects’ Object Properties dialog to make sure Receive Global Illumination is turned on. Also, to speed rendering time, you might want to turn off Receive Global Illumination for those objects that don’t need it. 3. In the Render Scene dialog, go to the Indirect Illumination panel > Caustics And Global Illumination rollout and turn on Global Illumination. 4. Adjust the global illumination parameters to get the effect you want. 5. For the final rendering, turn on Final Gather as well as Global Illumination. See Final Gather Rollout (mental ray Renderer). 6. Render the scene. MENU REFERENCES:Rendering menu > Render > Render Scene dialog > Indirect Illumination panel > Caustics and Global Illumination rolloutMain toolbar > Render Scene > Render Scene dialog > Indirect Illumination panel > Caustics and Global Illumination rolloutHave Fun!