TYPE: SHOP
TITLE: Select SHOP

This SHOP selects which SHOP to use for rendering based on valid render types
and expressions.

When using multiple renderers, the Select SHOP will choose the first input which
has a valid RenderMask matching the target renderer. For example, if the first
input is a RenderMan(tm) shader and the second is a VEX shader, then the first
input will be used when generating RIB code and the second will be used for
Mantra.

As well, it is possible to animate which SHOP is applied, a very useful feature
when rendering with multiple passes. The expression can be written to switch
inputs based on the render pass being executed.

There are no local variables.

Parameters:
    Input 1        - Choose this input if the parameter is not 0.  /activate1
    Input 2        - Choose this input if the parameter is not 0.  /activate2
    Input 3        - Choose this input if the parameter is not 0.  /activate3
    Input 4        - Choose this input if the parameter is not 0.  /activate4

See also: Switch
