This section covers scene lighting and shadow mapping problems.
Shadows produced from shadow casting
Problem: Shadows produced from shadow casting have jagged shadow boundaries.
Problem: Shadows from light fog may appear incorrect for very thin objects, or Light fog shadows shift over an animation.
See Fog samples in Fog (available in software renderings)Render > Multi-lister.
Soft shadows produced by raytracing
Problem: Soft shadows produced by raytracing are noisy.
See Use Shadow Map in Render > Multi-lister.
See Shadow Samples in Render > Multi-lister.
Moire pattern on surface when raycasting
Problem: A dark moire pattern on a surface when raycasting, or Incorrect shadows on a surface when raycasting.
See Correct self shadows.
The renderer incorrectly believes that a surface is behind its shadow map.
See Min Depth in Render > Create Lights > Spot.
See Blend Offset in Render > Create Lights > Spot.
Moving objects with motion blur
Problem: Incorrect shadows for moving objects with motion blur.
Shadows are not motion blurred. The renderer calculates an object’s shadow map when the camera shutter is at midpoint. When the object moves, it may move behind its own shadow map.
See Shadows in Render > Editors > Render Stats.
See Correct self shadows.