OSL goodness in Vray

[vlado]

I looked in the release notes in the nightlies and I do not see this mentioned there. Where could I get a list of the changes to OSL that have been implemented?

It is in the changelog for the 3.20 releases:

(*) VRayOSLMtl/VRayOSLTex: Support for drop-down controls;

The nightly builds release notes are pulled automatically from Mantis, but this is not very reliable.

Best regards,
Vlado

[sharktacos]

It is in the changelog for the 3.20 releases:

(*) VRayOSLMtl/VRayOSLTex: Support for drop-down controls;

The nightly builds release notes are pulled automatically from Mantis, but this is not very reliable.

Best regards,
Vlado

Are you possibly referring to Max? I do see a 3.20 release for Max (which we don't use), but I only see 3.0 for Maya in the downloads section. Thanks

[mayanic]

sorry for that dumb question, but how to wire up the nodes in order to get the osl shader to work?

[sharktacos]

sorry for that dumb question, but how to wire up the nodes in order to get the osl shader to work?

[ATTACH=CONFIG]25163[/ATTACH]

Depends on the OSL shader. Which one are you using? Most are meant to go in the reflection with Fresnel off on the material.

[mayanic]

I'm trying to get the complex_ior to run ...

when i plug the shader nothing changes and i wonder where the interface is?

[sharktacos]

Can you post an image of the OSLTex in the attribute editor? Do you get an error message when you load the OSL?

[mayanic]

i already posted a pics of my node editor / ae ...

i just connected the osl-texture to my reflection color and plugged a osl-file in there
but nothing happened

[doark]

i already posted a pics of my node editor / ae ...

i just connected the osl-texture to my reflection color and plugged a osl-file in there
but nothing happened

You need to turn off the Use Fresnel button and change in VRayTexOSL in Color Output of result for Col_Out. The same as this:


I hope this helps.

[sharktacos]

You need to turn off the Use Fresnel button and change in VRayTexOSL in Color Output of result for Col_Out. The same as this:
[ATTACH=CONFIG]25185[/ATTACH]

I hope this helps.

Right. It would probably be good to update the shader from this:


output color Col_Out = color(0.5))
{
float thetaCos = abs(dot(-I,N));
float red=fresnel(n[0], k[0], thetaCos);
float green=fresnel(n[1], k[1], thetaCos);
float blue=fresnel(n[2], k[2], thetaCos);
Col_Out=color(red, green, blue);
}

to this:

output color result = color(0.5))
{
float thetaCos = abs(dot(-I,N));
float red=fresnel(n[0], k[0], thetaCos);
float green=fresnel(n[1], k[1], thetaCos);
float blue=fresnel(n[2], k[2], thetaCos);
result=color(red, green, blue);

}

that way it will work by default in Maya.

[hsz]

what about if you want to use the fabric one where will you connect it?
thx

[sharktacos]

what about if you want to use the fabric one where will you connect it?
thx

just follow the instructions here:
http://docs.chaosgroup.com/display/O.../Fabric+shader

[hsz]

Im getting this error, where do I set up the path?

// Error: OSL shader error: OSL include path not set

[R2J2]

I tweaked it so it would work in Maya

hmm I did test it in maya 2014 and an older version of VRay, nightly pre 3.2.
do you know what it was that was causing problems in maya?
I'll test again later when we are all up to date here.

[sharktacos]

hmm I did test it in maya 2014 and an older version of VRay, nightly pre 3.2.
do you know what it was that was causing problems in maya?
I'll test again later when we are all up to date here.

"Col_Out" needs to be called "result"

[t.petrov]

@mayanic:
Your problem is that you're using the wrong node type - VRayPluginNodeTex:TexOSL instead of VRayTexOSL.
If you create the correct node it will work as expected. After you change the output as mentioned by others.