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The Bottom Line

Use shadow-casting lights. Lights can cast either depth map or raytrace shadows. Depth map shadows are created from an image projected from the shadow-casting light, which reads the depth information of the scene. Raytrace shadows are calculated by tracing rays from the light source to the rendering camera.

Master it Compare mental ray depth map shadows to raytrace shadows. Render the crystalGlobe.ma scene using soft raytrace shadows.

Render with global illumination. Global illumination simulates indirect lighting by emitting photons into a scene. Global illumination photons react with surfaces that have diffuse shaders. Caustics use photons that react to surfaces with reflective shaders. Global illumination works particularly well in indoor lighting situations.


  

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