Did you have a red material in your model? I would say that you can never really trust an override render to give you a true idea of your lighting in your final because light will be bounced off of materials and change the tones in your image. For example, a red floor would give off a bunch of redish light (unless you override it in the materials GI).

@brknbrkn said:

I have read something about enabling colourtexture for transparency

yes, this is the quick way. maybe is a problem of older versions. update it.

@cveti said:

Hi all,

I see that the topic is old, but I think that I can help somebody else, who just starts with VRay for SU.
I'm a brand new newbie and I'm still busy with the manual of Vray for SU.
I also just stuck with the translucent materials - I made tousands changes in order to get the proper look of the material, but the result was - just solid opaque material.
Than I started to search the web and I found this helpful tut:

Link Preview Image Page not found - Richard Rosenman Advertising & Design

favicon

Richard Rosenman Advertising & Design (www.richardrosenman.com)

The MOST important here is that we don't needed to check the translucent checkbox! Strange, but it perfectly works! Then the result is great and what is needed!!! ☀

thanks a lot ... 😍

Hi.
Im facing an issue with my Vray renderer.

It keeps showing me this message that i have attached as a scheenshot.

Opened Ruby Console in the Windows menu and it showed me the following message :
C:/Program Files/Chaos Group/V-Ray/V-Ray for SketchUp/extension/ruby/live_scene/live_scene:267:in launch_render' C:/Program Files/Chaos Group/V-Ray/V-Ray for SketchUp/extension/ruby/gui/commands:52:in block in module:GUI'
C:/Program Files/Chaos Group/V-Ray/V-Ray for SketchUp/extension/ruby/gui/commands:13:in call' C:/Program Files/Chaos Group/V-Ray/V-Ray for SketchUp/extension/ruby/gui/commands:13:in block in generate_command'
SketchUp:1:in `call'

However, I'm unable to understand what is wrong.

Kindly advice 😄

Try clicking the "m" button (Mapping) next to the Reflection color and adding a fresnel effect. You are making the face a perfect mirror, and as such, you are getting the whole plane reflecting the color of the sky/background, and NOT a reflection on top of your diffuse color.

Dave

that second image looks helpful. have you tried checking whether your geolocation and timezone are consistent? for example i remember having problems with sunlight and shading when i placed a model somewhere in Central Europe, but my timezone was set to UTC -7.

Thank you sir for these tips. I managed to do the curtain with displacement, not quite succesfully in vray for SU but Vray for max. Using the same map, Max does it
quite fast too. Your chain curtain looks much more complicated. Mine is just ball chain. Thanks anyway.

exhibit_1.jpg

Also, if you have 1.49.01 you can move the reflection layer above your emmissive layer and you will get a light bulb effect. 1.05.30 cannot do this but I dont know why the heck anyone would still be using that version.

simply use a png map with a transparent background in the in the diffuse slot.
make sure to tick the "use texture transparency" checkbox.
you can use the same diffuse png map to get bump/displacement/reflection/whatever map just with a little photoshop..

hope this can help..

@maeglin1 said:

Vray 1.6

You really should be using vray 2.0. Vray 1.6 is beta build that has expired. There have been a lot of improvements anyway since 1.6

@unknownuser said:

and it works as it should.
I have even located the Vrimg Converter which is very handy.... a plugin I would never have discovered if I did not have this problem.

Glad to hear you've fixed your installation and were able to follow the tutorial 👍

@neeharikavijayrao said:

doing the exteriors feels daunting!!!

I'm not so sure about that. Just start with the default vray settings and you are most of the way there. You can remove texSky from the GI color, increase the GI multiplier until you have enough light in the shadows, and turn on default lights in your global settings (to keep the sun on) You might need to increase your camera shutter speed or f-stop to get the correct exposure as you increase the GI. Hope that helps.

Andy

Hi guys, I tried exploding the walls (since I have grouped them into components earlier) and it works out well!
Although there are still faint splotches on the 2nd & 3rd blocks from the left.

I am guessing that it might have been a SU bug?

I have another question:
how do i make the yellow roof (supposedly perforated metal roof) more porous? cause it seems to me now that they are still somewhat opaque from far. (not much light passing through)
I have included the bump map for rendering but whenever I have changed the porosity sizes (on SU paint material setting) I would have to alter the corresponding bump map on photoshop before loading it on vray material editor. Is there a faster way of doing this?

Many thanks! -)

Compare.jpg

Hello,

if you render with HDR on GI and BG, take a look at this VIDEO. It will help you for your shadows parameters... 😉

looks like "z-fighting" to me. (when more than one face is co-planar) Here's one thing you can try:

"unglue" your image from the plane that you have it attached to. move the image forward away from the background plane by .5 mm (and move those floating boxes in front of the plane, yet another .5 mm -- sometimes the glass renders incorrectly too if you have it coplanar.)

Andy

Make sure you are using Fresnel reflections and turn up the IOR to something like 1.85 - then make your reflection glossiness something like .75 as suggested above and turn up your subdiv to 22 or higher or you will get a lot of noise.

@valerostudio said:

That makes sense! Thanks Thom!

As you found out, setting an aspect ratio in SketchUp and matching the VfSU view usually works. (Though I've had issues at some ratios...) But I find it generally best to set an aspect ratio in SU as the scene can then be rendered on any machine and still be matching. Without the different size of the monitor will mess things up. I also found that rendering Photo Matched scenes doesn't work well. But I recreated the scene as a normal scene with the Ruby API and then it would render.
It will be in the update of VfSU Tools 2.0 which I am working on.

@thomthom said:

That limit the size of your render to the size of the viewport. If you need highres images, but in the same aspect ratio of the viewport use the "Get view aspect" button and then lock the aspect ratio. Then you can increase the output size and still be relative to SU. So if you save out a 3000px wide image in SU and then render out a 3000px wide image in VfSU they match, no problem.

as it indeed, I was wondering if there is a vertical correction for the camera as in 3d max vertical correction at a vray camera or Guess vert, I've tried 2 point perspective but it changes the camera position and if I move it back the perspective changes 😕 . so my question is: is it posible to correct verticals (easy way) without moving my view?

😆

No..not loading any GI maps...but vray 2.0 worked for me....i guess older version ddnt support the materials well......anyways tnx evrybody for the responses...

i hope layer change will be supported in the so waited new version.. 😒