Cheers for this... attached is how its looking so far [image: puf2_SCENE2.jpg]

@jiminy-billy-bob said: @coreymurray said: (double sided tick box in option in mat editor) This tick box only means that the material will be applied to both sides of the polygons. A Vray2sided Mtl is a really special material. It allows you to have different materials between the front and back sides of your polygons, and blend these two materials together (and the light they receive) depending on a grey value (or map). This allows you to mimic translucency for very thin objects (one face only): Paper, leaves, curtains, etc. https://www.google.fr/webhp?#q=vray%202sided Thanks for the explanation Jiminy - that's a really powerful technique.

1.6 was a beta and that is over now. We are now on 2.0 and this was a bug that was fixed.

What are your specs? I downloaded your model and it rendered in 2 minutes after I changed the settings back to default. I noticed your Dynamic memory limit was set to 10,000. Don't do that. Im thinking that might have been the problem. Leave it as a default setting, or set it to 1024, 2048, or 3072. This is how you allocate your ram for a rendering to prevent crashes. The lower the number the slower the render (on larger jobs), but it also makes the rendering process more stable.

Hi marekorv, Could you please email support@chaosgroup.com with this issue and send a packed scene and model so that we can test it? To pack a scene go to Plugins>V-Ray>Pack Scene, this ensures we recieve all the associated assets. In the meantime you can try some things to see if it will fix your scene: Force Sync all materials: Go to Plugins> V-Ray> Debugging> Force sync all materials Try Copying all of your geometry into a new clean empty Sketchup scene. Be sure all associated materials/textures are in a location on a local drive that V-Ray can access. Let me know if any of those solutions helped and when you contact support, let them know you spoke to Ted in the US office initially via the Sketchucation Forums. You may also want to look in the Forums on the http://www.chaosgroup.com website for other solutions to this issue.

Glad I could help!

Please contact support@chaosgroup.com. We can help you with your issue more efficiently if you contact us directly.

Do you use its render feature? How does it integrate your workflow? Do you see how it could be improved for rendering? (I'm the author, I would love to hear your feedback on this. And what CG USA in general think of it)

I believe the 4 light restriction is due to you using the Demo version of the software. If you upgrade to the full version that should go away. Rob

And in my opinion, the elevation you want won't benefit from rendering that much. The benefits of a rendering vs a sketchup elevation has to do with material and light, right now your reflective material looks flat because there is nothing to reflect, just a grey background, try adding a billboard or something to reflect behind the camera. Secondly, the lights have very little material to lighten, the glass has a bit of reflection of the light but nothing more. Maybe add a floor plane to show the effect of the lights. Rob

This may also have to do with image resolution. If your image is noticeably tiled, than your grass displacement will look tiled as well.

Explain how its crashing, is it a Bugsplat, or just an RT crash? I just downloaded the Demo to test this. The output is limited to 600x400 maximum resolution. If you change your resolution settings while RT is running it will crash. This is not a supported workflow.

Thanks alot guys!

like this? http://www.4dvirtualbuilder.com/

If you see it stall out like that, it's likely that the XMLDRSpawner is frozen or has crashed. This needs to be running in the background, in order for RT to work properly. You can check that by looking in the task manager on Windows, or the activity monitor on OSX. I would suggest killing that process and then running it again, just to make sure that it's not frozen.

... that looks like an email from v-ray.com? Am I correct? That isn't the company that makes V-Ray for SketchUp, they're a reseller.

There been some suspects that if both vray for SU and Thea for SU are installed there is change for a crash (maybe observers do not play well). Anyhow... about the crash, you really should post a detailed bug report at Thea forums (if you not already have done so); used software version (su, thea & vray..., os, hardware specks, gpu drivers and so) so that Tomasz can take a look on this. http://www.thearender.com/forum/viewforum.php?f=82

I'm not saying there's no workaround - it's just that this effects regular groups in a model, not just when you make a proxy. I think best practice when modeling is to not add material properties to top-level groups, only low level groups or faces only.

the reflection map just follows your UV mapping. If you don't have a texture mapped in SU, then you won't have control over how vray determines your mapping. You'd need to add a dummy diffuse layer to control mapping. In your case - I'd put the reflection map in your SU texture, then in vray material editor do the following: add a second diffuse layer under your first material add transparency to your first diffuse layer by specifying a "TexAlpha" material set to white. This will allow vray to apply the UV mapping you've set in SU, while ignoring the pattern in the render. There's more information about this on the ChaosGroup forum if you need: http://forums.chaosgroup.com/showthread.php?62274-Texture-placement-workaround-for-SketchUp

be aware that using displacement means that you are asking vray to subdivide your faces for you if they are something other than quads (more than 4 vertices per face.) You will see such triangulation artifacts if you are not careful to draw interior lines so you end up with more "square" planes on your face.