Making a diffuse texture with partial transparency

nonesuch00

Hey,

I have old models and I converted the surfaces to Ueber iRay. Now I want to make those surfaces, I'm not sure, about 50% transparent and also convert them to glass iRay shaders but have there old diffuse textures on them as 50% transparent. Is that possible?

Thanks.

mjc1016

Not quite that way...

Transparency is primarily controlled by the refraction parameter.  So what you should try is to just use the base Iray preset and up the Refraction weight to about 50% or so and see if that's giving you the effect you want.  You'll need to set an IOR for the item, so if it is based on a real world item, see if you can find it. 

 

nonesuch00

mjc1016 said:

Not quite that way...

Transparency is primarily controlled by the refraction parameter.  So what you should try is to just use the base Iray preset and up the Refraction weight to about 50% or so and see if that's giving you the effect you want.  You'll need to set an IOR for the item, so if it is based on a real world item, see if you can find it. 

 

Thanks. It has no real IOR (well not one that would make it mostly transparent) but I'm trying to create a spirit effect so I'll try what you said & make adjustments.

mjc1016

Well...upping the refraction weight to about 75% will turn most things pretty darn translucent.  The translucency settings are for mostly 'thin' things.

nonesuch00

I can't find in the iRay Surfaces settings (converted with UeberIRay) called an index of refraction (IOR) but only a refraction index and a transluncency weight.

And another question - would it be possible to have an only transmit white light but retain it's base diffuse color? My emmisive light objects look like glowing white lights but there base diffuse color is pure red.

mjc1016

Refraction Index and Index of Refraction are the same thing...most 3DL shaders use IOR and as you've found, the Iray Uber Base uses Refraction Index,

 

nonesuch00

mjc1016 said:

Refraction Index and Index of Refraction are the same thing...most 3DL shaders use IOR and as you've found, the Iray Uber Base uses Refraction Index,

 

Thanks, that's what I thought and then it's probably a case of the iRay rendering process not being far enough along to draw the IOR effects or a case of the Emissive Lights on the same objects overwhelming the IOR effects, probably the latter. Oh well, it was worth a try but I am using the more as lanterns then anything else.