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Andrew West

Example Images

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Hi Andrew,

I have never learned to do the Material ID trick and I just sat here trying things to get that to work. Forgive me for a silly question, what are the steps? How to save the image? Etc.

Also, I have been looking to the Ronen Bekerman website for inspiration because I don't know how they accomplish all of those incredible renders. I am trying to level up by looking at their case studies on that site. I wish I could see your lodge/aspen home model done up like that! You start being able to tell that those really nice renders are lots of extra work. Of course, I'm now in the mechanical world as opposed to the architectural one. I have to make mundane building materials look dramatic.

https://www.ronenbekerman.com/

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So I'm trying to follow along with these forum posts as I'd love to know all these great tricks to get our formZ renderings to the next level. But with my current workload I'm slammed and it's hard to find time to keep up with all this. Should we start a YouTube page and share some quick tutorials on how we achieve some of these things?? I know, it takes time to create video's and edit them ,etc. But a picture (video) is worth a thousand words trying to explain all these things. I really wish formZ would release some video tutorials that go into more detail about using Vray and what all the settings do but that's just wishful thinking.

Also, I'd love to be able to create some simple animations using Vray, is this even possible yet? Last time I tried to use Vray in Imager earlier this year I couldn't even get that to work. 

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I have been doing VRay animations using Imager. I contacted support when it crashed the first time, and I was told how to toss the Imager 8.5 autodessys folder before I start. Since then, I throw away the folder and start fresh each time I want to use the Imager, and Imager has worked without any flaw for thousands of frames of animation. I have let it run all weekend doing a large number of clips and they are all done when I come back. I am on Windows 10.

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2 hours ago, johnalexander1571 said:

Hi Andrew,

I have never learned to do the Material ID trick and I just sat here trying things to get that to work. Forgive me for a silly question, what are the steps? How to save the image? Etc.

Also, I have been looking to the Ronen Bekerman website for inspiration because I don't know how they accomplish all of those incredible renders. I am trying to level up by looking at their case studies on that site. I wish I could see your lodge/aspen home model done up like that! You start being able to tell that those really nice renders are lots of extra work. Of course, I'm now in the mechanical world as opposed to the architectural one. I have to make mundane building materials look dramatic.

https://www.ronenbekerman.com/

John

I can help you and everyone else out on the material ID feature.  This is a very important feature of Vray that everyone should use.  I can't tell you how many times in my work I get asked to tweak a material color after the image has finished rendering.  Or perhaps  you want to work on a particular piece to dodge, burn, blur, or fix a map  without affecting the areas around it. Rather than re render the image a material ID channel allow you to do all your color management Post Process by isolating that material in your image. 

Its really quite simple:  Double click on your material to pull up the material parameters.  Go to the Vray tab of that material.  Below IOR is a Material Options button.  Open that and you will see a new palette with the Material ID button already highlighted.  Type in a number from 1 to whatever.  That number corresponds to a base color that will be assigned to that material in  a separate channel during the final render.  Now in your Vray settings palette scroll down through your Render Elements and select Material ID.  I also select Reflection, Depth of Field, Denoiser and a few others.  When you render your final image you will get each of these in a separate channel to be loaded in PS.  To save those separate channels just choose that option at the top of the render window rather than just saving the current channel.  There is also the option to save out as an EXR which should have the channels all loaded into one file but that has never worked for me. 

Tech, if you are listening I have suggested before that it would be very convenient for us if the program just automatically assigned a Material ID number/color for every new material created.  Easier said than done I suppose.

Hope this helps improve your workflow

AW

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Thanks Andrew, I didn't know there was a drop down menu at the top of the render window with a plethora of channels to save out. I was missing that part, all is well now. Thanks for your great reply and the other suggestions on how to use this feature.

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John - Thanks, I'll have to give that a try for the animations next time! I'm on a Mac so might be a different story for me.

Andrew - I never knew about the material ID thing and being able to adjust things post process!!! I've always just hit render and if something needed adjusted I'd stop the rendering and adjust that material or whatever, then would re-render. I have always just saved the renderings as a png once they got to a good amount of passes, usually at least 50 or 60+. But you're saying you can save all the channels separately? Do you know if there's a way to adjust the lighting post process like this? That's something I loved about Maxwell the very little time I had toying with it.

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The short answer is yes and no.  Maxwell has that wonderful feature called Multilight that allows you to turn lights on and off and adjust intensity post process.  Amazing stuff.  However, in Vray there are a few channels that you can output called Global illumination, Self Illumination, and lighting.  Along with the reflection channel you can really adjust the way light is handled post process.  Still nothing like Maxwell but a huge improvement over RenderZone. 

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Andrew - Thanks again! This is all definitely something I need to dive into then. I'm actually going to do a quick rendering now just to test out some of the material ID stuff with saving out the separate channels to make sure I understand it all while we're on the subject. Again, it would be nice if there would have been some sort of series of videos released about all this stuff instead of having to basically learn on your own thru trial & error, or via forums, etc. If I only had all the wasted hours of my life back haha...

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Wow.  Some great information sharing here on how to get these awesome example images.  Nice!

For those looking for a bit more documentation and videos on VRAY, I'd suggest looking at the VRay for SketchUp docs and videos.  Our VRay interface is similar, and the VRay Frame Buffer (VFB) rendering window is the same.  The VFB has many advanced tools that you may find useful.  I don't use post processing much for my work, but occasionally I find it really handy to use the Clipboard (Copy) feature of the VFB, which allows me to then Paste the selected channel in Photoshop.  You can also save out the separate channels as separate files, or a single EXR file with all of the channels on seperate layers.  This may be handy if you do a lot of post processing.

https://docs.chaosgroup.com/display/VRAYSKETCHUP/V-Ray+Frame+Buffer+|+VFB

 

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For me the reflection channel seems to handle gloss more than reflections.  Add that channel into your photoshop image over the base png file and set blending to Screen mode.  It will tend to lighten an image and add more realism.  The reflections in Vray are a bit difficult to control compared to Maxwell.  Some people are adding spheres around their models with hdri images inside and some are using dome lights.  I wish I had a set way of doing things but it really depends on the materials, models, environment lights, etc.  One of my bigger disappointments with Vray has been the reflection issue which really should be easier to control and more intuitive.  Going back to the Material ID channel in PS still seems to me to be the easiest way to get total control of this.  Hope this helps.

AW

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