Join Dave Schultze for an in-depth discussion in this video Using the V-Ray presets and options to simplify and streamline, part of Rhino and V-Ray: Rendering.
In this video, we'll spend some time using the V-Ray presets into a lesser extent V-Ray options. Now, the presets are a brand new feature in Rhino2, and are a huge time saver. This can save you untold tweaking, and make your renders, render much faster. We're going to find both of these on the Option editor. So, let's go to the V-Ray toolbar. Click on O for options. So, this is the area we'll be focusing on right here at the top. Now, one key difference in using the VR options is that they are destructive.
This means that it wipes clean every setting in this entire panel below. So as you know, there are a lot of settings there. And actually many times this can be a good thing. For example, let's say you have renderings that just are turning out weird. All dark, or way too bright. So you can click on this button here. This is load defaults and that will repopulate everything. That usually will fix most problems. But then again, it can change things that you wanted to keep the same. So, let's go ahead and look at an example of that. So low defaults.
Now what it's done, it's just turned off my distributed rendering. So I've got to turn this back on. I go to my hosts, so this is not part of this lecture, but I do want to have extra speed from all these other computers. The other thing that I usually want to change back is the output size, because it defaults to 800 by 600. So let's make that a little bit bigger. So I go with 900, we get the view aspect, and I kind of lock that down. Let's go ahead and just make a comparison render right now, and see what we're working with, and we'll compare it to some of the changes coming up later. Go to toolbar and hit R for render. Okay, the render's complete. And what we're looking at here, is a group of all the default settings, except for the last two that we just tweaked. So, this actually is a great starting point for most projects.
The defaults are kind of medium quality. So, you can always make them a bit lower quality, to speed up, or higher quality for you final presentation. Let's talk about some of these other options in here. So if we want to load another group or save it, we use these two buttons here. So, what I'm going to to do, assuming I just made some changes. We're going to save those right now. They go into this folder, which should be selected by default. This will be on your C drive > Program Data > ASGVis > Options. This Rhino default is what we just loaded by clicking on this yellow ball with the arrow.
I'll just call it the Dave settings. And save it. So, it's now available there and if I come back later, even when the computer's off and back on, this is saved on the hard drive. And it's going to be under my load. There's the Dave settings. Pretty nice. Yeah, this is where it gets a little confusing, these two guys here, one is import, the other is export. Those will just save groups of changes. It's not like the VR Ops I just said to watch out for that clear the whole panel. However, this can get a little bit confusing, it's not exactly clear which things it's changing and which it's not.
So I just tend to load the defaults, and we're going to move on to presets, which I actually find much easier to use. The big difference? With the presets from the VR Ops, is these are very selective and targeted. Meaning they're non destructive, they only change certain things, and it's a lot more clear what's happening. These are organized into a couple of categories. For example, we have a camera category. And if we select that, we'll have different camera settings which only affect that one little section. The other areas are exterior, interior.
And those change some of the lighting and quality settings, for scenes that are outdoors, and have extremely bright sun we're not going to do that. Instead we're going to focus on general. This would probably be better labelled as quality. Because if we go over here, these are all the quality settings that could be modified. So, we discussed the defaults from VIS-OPPS, this is the equivalent over here right about in the medium preset. Again, it's highly targeted, it wouldn't erase those couple of things we saw earlier. Before we make any changes though, let's look at some of the examples of quality settings and then we'll do a before and after.
So, from the defaults we picked earlier, these are two areas that control quality. Not all fo them but just two of the main areas. So this is the area controlling anti-aliasing, which gives you nice, smooth edges. And without worrying about what all these words mean, we can just kind of look at the settings. This is one and four. The filter is on and this is another key setting here, noise threshold. So that's what we had already completed. Let's make a change and switch to preview. We do have to hit this green check mark use the preset.
Everything gets populated only in specific areas. If you open up those two again notice the filter got turned off, and the two numbers that were one and four are now one and one. And the noise threshold is a lot higher number. So smaller numbers get higher quality. Lets just take a look and notice the difference. Here the rendering is complete. It looks like, just off the top of my head, 3, 4, 5 times faster. But there is a huge trade-off. You can see a lot of noise on the ground here. Artifacts, also the edges if I zoom in a bit, no anti aliasing and this is what you get without aliasing. Its very jaggy and not very nice looking but this is actually very useful, if you had a large project or a big scene, you wouldn't want to wait so long every time, just to get kind of a quick feedback, so you would switch it to lower quality which we just did.
Its called preview. And do quick renders that will actually help you make a lot of decisions as you move along. Now, let's try the high quality and just compare that. So, we're up in the general again. We're going to select high quality. Click on the little green check mark, and take a peek at what happened. So this went from 11 to 25. I think the way a lot of these work are they're square values. So these are actually creating a lot more work for the computer even though we just went up one or two. Now the filters turn back on, and our noise threshold is way higher, it's pretty much cranked up to the max. Let's go ahead and render this and you'll see a big difference. Okay the rendering's done and hopefully you can tell that's a big improvement. If we go back to the same area I'm going to zoom in here with my mouse wheel, and notice this is much smoothing edge, looks way more realistic and it's looking very close to a photograph.
You might have noticed we have one further improvement. We could actually go to very high. That's going to probably double it again as far as rendering time. So the judgement call on your part as far as how much time you want to invest and wait for the results. With my work, I find I'm using the new presets way more often than the VR Ops. Not only are they selective in their changes, but I love the way I can easily change the quality and speed all in one spot. For beginners this is a great way to go.
- Why use V-Ray?
- Installing DR Spawner
- Understanding 3D terminology
- Activating V-Ray
- Adjusting quality settings
- Get quick previews with the material override
- Understanding lighting types
- Exploring materials in the Material Editor
- Creating your own materials
- Texture mapping materials with bitmaps and procedurals
- Saving time with V-Ray presets
- Getting the right size for your render with output settings
- Working with environment lighting
- Strategies for working with cameras and camera settings
- Ensuring accurate color for your scene with color correction
- Rendering tips and tricks