Adding and fine-tuning shadows

…Shadows are an essential part of lighting.…But we have to make some judgment calls over what is acceptable in our shadows.…Casting and calculating real time shadows is enormously, computationally intensive.…And so we need to be very careful about what…lights cast shadows and what kind of shadows they are.…Right now, the only shadows I have are those from the sun coming…into the space, and actually shadowing off the roof and inside this building.…I'll look at my sun first and adjust the shadow quality.…And then I'll see if there's any other lights I can put shadows on.…

I'll select my sun.…Scrolling down in the hierarchy and picking the sun.…And right now it's set to soft shadows with the default quality settings.…I'll zoom in over by the balcony and take a look at how these lights are behaving.…Soft shadows are the ideal.…They spread out as natural light does and have the appearance…of the light diffusing and light bouncing into the shadow correctly.…They're computationally fairly expensive, and so we want to use them very carefully.…