thanks guys I just watched the video and chose default.visopt with a little changes that was recommended in the video and contrast is good now [image: CSPN_1.jpg]

It helps, thanks a lot.

Thanks

no, that's exactly what i'm not asking (although i have been trying to resolve the issue in another thread, about this time last year.) what i would want is this: i press the render button and if i hit Esc (which should stop the rendering process) or the render finishes, it saves the render (or whatever is in the framebuffer at the moment of cancellation) to a previously specified folder with a name for example autosave0000.png. then when i hit render again (to see how my material changed), the file saved would be autosave0001.png. or it could use a timestamp or i don't know what. hm, but i guess this is a work for a separate script, rather than a matter of settings in vray...

The very first version has all sorts of oddities. The newer versions automatically syncs all materials. There is no link or unlink. There was never any unlink though.

@valerostudio said: But we all agree that fresnel is the best solution for realistic reflections? Yes

All the manuals that exist for VR4SU live here http://spot3d.com/

I think this article has the basic answers to this question. http://galaxycityradio.com/2012/01/04/biased-vs-unbiased/

Thank's a lot, it's clearer now.

We have recently reinstalled Vray so quite possible it was from the old version... thanks! At least it shouldn't be a problem with future projects. Thanks for your help!

Hi Fred, When SketchUp crashes, do you see a dialog where you can submit a crash report? If so, can you submit a crash with your e-mail (you can private message me with it) or with some unique comment that I can search on and find? I'll look up the crash and see if gives us any clues. Regards, Tricia Google

You can use the jpegs as your material maps, but you will not be able to the material files. These files are for V-Ray for 3D Studio and the SketchUp plugin has its own format .vismat This site has some free vismats http://luzindirecta.org/ and there a ton on the Chaos site (for registered users).

importing an image only works for flat logos - the drinking glass one would have to be mapped. Also, make sure the "use alpha for transparency" is checked in the vray material. Yes it worked fine and i found the use alphafor transparency, this one must only in the diffuse layer with the imported logo. By the way nice bottles you made, i will try these also to make

Sounds like you are trying to render a heavy model file. I agree that saving and restarting SU will probably help. I have found that with these issues, VRay clears reflections and some alpha map settings when you get this error. You should go through your materials list and verify that this has not happened, the re-render.

Not necessarily darker as the projection light source is independent of the exterior sunlight. When in doubt, I will google for an example and if that produces nothing I will do a small quick-and-dirty mockup to study the effect I am trying to reproduce. Of course, you can also build the projection effect right into your model and not have to do anything in post. However if you understand what the result will be it can be quicker to fake it.

@rspierenburg said: Once again though, the modelling seems nice and clean and pretty intricate. thanks. ...although i know there'sbeen a lotta triangulation of simple rectangle faces..making model untidy..vray ignores those bad lines that come

i will recommend pixplant.

have you seen this tutorial http://www.nomeradona.blogspot.com/2011/09/tutorial-how-to-create-pool-water-in.html

I would imagine you can get most things in one layer. There are many map slots available for the different aspects of reflections. I know some of the metal materials use two layers because there are two different IOR values used. Is there a particular example you are working on?