the new opacity map channel in Vray material

[Robert]

I just did a quick test:

standart Max Material with opacity map: 51 sec.
Vray Material with opacity map: 67 sec.
Vray Material with the same map in refraction map slot (ref. index 1): 56 sec.

I did this test on some speedtree scenes too and was a little shocked. A scene with 2 hour rendertime was at 4.5 hours.

Ok, it's a first step. Unfortunatly it's not worth a cent at the moment as it's slower then before. Hope this will get improved.

One hint for using TGA files: Vray interpret the Targa different, so you can't just instance the material from diffuse slot. you have to turn alpha as grey on.

robert

[ene.xis]

this opacity slowdown is really a pain in the +++...anyway i m using norwadays a blend material with a vray mat with the difuse map and the opacity map in the mask slot...it seems a workaround...

[DanielBrew]

Robert,

Try setting the filtering to 'none' for the opacity map texture. There was a post about this a while ago where Vlado did some examples.

Dan

[vlado]

Robert, it would be nice if you can send this quick test to me at vlado@chaossw.com; my own tests indicate that VRay opacity is faster that the std material in all cases I've made so I would like to take a look at your scene.

Best regards,
Vlado