So I've gotten to writing a UV manipulator node, and so far whipped
something up real quick based on a mix of LogGeo and UVProject.
Seems to be working, however there is something I don't really get
with regards to attribute storage.
Currently I have to manipulate copied UVs with Vector4 attributes,
like so
https://gist.github.com/3d6a6997a14110f92ed5
and once I copy the data from the vector into itself using set() I
have to feed in all the 4 values. What perplexes me
is why there is 4 of them? I can understand the UV are the two
dimensions, then there's W, but what is Z? And what is the ordering
of the values in the vector? The documentation is almost silent on that.
I can retreive the atribute as Vector2 but the manipulation creates a
really weird result visually, as if I am missing dimensions.
Would appreciate if someone could explain that. UVTile from Jonathan
is not really the best example since it works in shader space.
--
Julik Tarkhanov | HecticElectric | Keizersgracht 736 1017 EX
Amsterdam | The Netherlands | tel. +31 20 330 8250
cel. +31 61 145 06 36 | http://hecticelectric.nl
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