Projector

A Projector allows you to project a Material onto all objects that intersect its frustum. The material must use a special type of shader for the projection effect to work correctly - see the projector prefabs in Unity’s standard assets for examples of how to use the supplied Projector/Light and Projector/Multiply shaders.

Properties

Details

With a projector you can:

1. Create shadows.
2. Make a real world projector on a tripod with another Camera that films some other part of the world using a Render Texture.
3. Create bullet marks.
4. Funky lighting effects.

If you want to create a simple shadow effect, simply drag the StandardAssets->Blob-Shadow->Blob shadow projector Prefab into your scene. You can modify the Material to use a different Blob shadow texture.

Note: When creating a projector, always be sure to set the wrap mode of the texture’s material of the projector to clamp. else the projector’s texture will be seen repeated and you will not achieve the desired effect of shadow over your character.

Hints

• Projector Blob shadows can create very impressive Splinter Cell-like lighting effects if used to shadow the environment properly.
• When no Falloff Texture is used in the projector’s Material, it can project both forward and backward, creating “double projection”. To fix this, use an alpha-only Falloff texture that has a black leftmost pixel column.