Projected Planar Shadow Issues
- Shadow must be cast on infinite planes
- Stencil can limit shadow to finite planar region
- “Pile of polygons” creates Z-fighting artifacts
- Polygon offset fixes this, but disturbs Z values
- Stencil testing is better solution
- Difficult to blend shadow with ground texture
- Just blending creates “double blends”
- But stencil testing can eliminate “double blends”
- Specular highlights can show in shadow