Iray Surfaces And What They MeanI've updated and corrected this article based on DAZ's documentation. You should read that if you want more information. This will continue to be more of a "plain talk" breakdown.More Like This
Let us begin with the different types of shaders from the "Base Mixing" dropdown at the top. Choosing one of these will hide or gray out some options and reveal others.
The Iray shader behaves as though it has three layers: The "base" layer, the "metallic flakes" layer on top of that, and the "top coat layer" on top of that. It is possible to turn off the top two layers and not use their settings, but the ability to use them is a property this shader has that 3Delight did not. This makes using shaders made for Iray very important when rendering to get the best look in Iray!
[Tutorial] Creating Dust And Atmosphere in IrayA video version is here.More Like This
I learned this method from jag11 on the DAZ3D forums, who is thanked for permission to use it in this tutorial!
In 3Delight there's no way to create atmosphere or godrays (the rays that are visible when light passes through dust or particles). There are products to facilitate (one of them mine), but most are either not the easiest to use or ultimately just a faking of a feature the engine lacks. Many artists use postwork instead.
DAZ Studio 4.8 Beta's new Iray engine also lacks a native mechanism for creating atmospheric volumes - but it can be easily convinced to produce them! They will come from your lights and react to objects in your scene. I did a test image of Jack Tomalin's Chapter House Iray scene (free to Plat Club members
Iray in DAZ Studio: Plain Talk About HardwareAs my deviantart and YouTube traffic explode with new Iray users, I'm still seeing a lot of confusion about this. Before we go on, please have a look at my time benchmarks for the scene I made for that purpose, try rendering it at 400x520 on your system, and compare.More Like This
We've also got a thread about it on the DAZ forum, where you can see a lot of people's hardware and how they did.
Hopefully this will help remove some confusion:
1. In general, the main thing that affects how fast you can render with Iray is how many CUDA cores and how much VRAM your Nvidia graphics cards have.
If you bought a card one or more years ago and it was a midrange/decent card then, it is of very little use to you with Iray. ATI Radeon cards don't work at all. There seem to be some issues with Macintoshs and older cards' drivers, but I don't completely understand how t