[Sidefx-houdini-list] Rman VOP displace shader

Louis Dunlevy ld at dneg.com
Mon Jun 18 13:35:07 EDT 2007

You'll notice the offset input is set to be a point rather than a 
vector. PRman transforms that as the camera moves.

Bad SESI >:o  .. naughty naughty....

just pass in the offset as 3 floats and combine them! 8-)

Sean Lewkiw wrote:
> Hi,
> I've built an RMAN VOP displacement shader using the VOP aanoise.  
> When I animate the camera, the noise moves.  So I added an 
> rsl_transform node, from "current" to "world". Still moves.  Tried an 
> in-line VOP with:
> transform("object",P);
> ... no joy.  Tried:   vtransform("current", "world", P);
> ... no joy.  Then I tried to pipe the first transform above into 
> another in-line VOP with
> noise(pp*10) * .2;
> ... and it works, the noise sticks.  Is the Houdini RMAN aanoise VOP 
> broken?  (I see lots of space change warnings in my .err files about 
> the voplib.h files.)
> Sean

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