getattribute() in osl is not working

Question

I'm trying to get the UV coordinates of from UVMap using getattribute() as follows :

#include "stdosl.h"

shader node_uv_map(
    string name = "",
    output point UV = point(0.0, 0.0, 0.0),
)
{
    if (name == "")
        getattribute("geom:uv", UV);
    else
        getattribute(name, UV);
}

with the name empty or containing the UVmap name there is no output

how to perform that correctly
is there another way to get the uvmap coordinates in osl
what are othor attribute that can be retrieved using getattribute beside these

Blender 2.7b

stacker · Accepted Answer · 2015-02-10T17:54:37.060

5

enter image description here

The texture only appeared after I added another Image Texture node (which is not realated to anything). Muting this node if enough to make the texture disappear.

The topic is also discussed on an older BA-Thread

You could use Input/UV-Map node to get the UV-coordinates:

Wiring the UV makes them accessible for getattributes

enter image description here

edited Feb 10 '15 at 17:54

answered Feb 10 '15 at 17:11

stacker

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thanks that worked for me, this gives the active UVMap only so how can i choose another one through osl – Chebhou Feb 10 '15 at 17:23
@Chebhou you can have as many as you want by adding multiple UVMap -Nodes with different UV-Maps. (if I get you right) – stacker Feb 10 '15 at 17:35
i meant accessing them with their names getattribute("UVMap.001",UV) – Chebhou Feb 10 '15 at 17:39
@Chebhou added another example – stacker Feb 10 '15 at 17:54
I haven't used getattribute much, I'm thinking for this it would easier and cleaner to have multiple vector inputs and connect a uvmap node to the script node. – sambler Feb 11 '15 at 11:35
@sambler the problem with getattribute() extends to all other attributes not only UVmap for instance Getting a Light vector in OSL – Chebhou Feb 11 '15 at 13:33

getattribute() in osl is not working

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