Camera Projection

a) set up camera projection as in mike breymann tut
>
> Mike Breymann explains how to set up camera projection
> in maya http://www.glyphfx.com/main_old.htm. the
> camproj shader can be found here
> http://www.highend3d.com/renderman/downloads/shaders/3442.html
>
>
>
> b) parent spot to projection camera – put ‘camproj’
> shader on spot .create light set for each light.
> create geometry attribute – tell that geometry to be
> lit by the relevant light set.
>
> c) attach the cameramapping_surface shader to the
> geometry
>
> surface cameramapping_surface( )
> {
> illuminance(P){
> Ci += Cl;
> }
> }
>

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