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- bdupras@bert.eecs.uic.edu (Brian Dupras) writes:
- |> > shadow mapping....The map most often ends up with large blocky artifacts.
- |> > Increasing the Shadow Map Size
- |> > decreased the size of the "stair-steps", but we ran out of 32MB of RAM
-
- |> we turned off the "use cone angle" feature and
- |> manually positioned the shadow map box (from the light view) over the
- |> small area that the rig was in.
-
- With "Use Cone Angle" disabled, you can use spotlights to light vast areas
- and still produce high quality shadows for a small selected area without
- using gobs of memory. But if you plan on producing shadows over a very
- large area with lots of small detail, you have to either use very large
- shadow maps or resort to tracing. As Allen has pointed out in previous
- posts, 24MB were consumed just for shadow maps in the Pixar film, Luxo Jr.
- And that didn't even span a large area.
-
- |> Any LW-Pro editors out there that can offer more insight?
-
- In the next issue, I have an article dedicated to the use of shadows in LW
- and a good portion covers the effective use and pitfalls of shadow maps.
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