IRay settings for decent definition in ~10 min?

Comments

• will2power Posts: 270

  July 2015

  You've got a pretty respectable video card there. Have you considered adding a second? I know it sounds like an expensive proposition, but it may be worth the investment if you're talking about workflow. The Iray render engine, like Octane Render can utilize more than one video card. From what you've posted, I can see that you've got quality components. When I was working more with 3delight, I was really dissatisfied with the render time. Changing from using the built in lighting from DAZ helped a lot, but the wait time was agonizing. Finally, I just broke down and build a beefier system. It was a huge expense, but after seing that time go down to ten/fifteen minutes, I was happy. Now that we have Iray, I'm forced to look at making the move again to getting components that can really cook with the new render engine. 

  I'm looking at getting two or the gtx 980 Ti's or a couple of GTX Titan Xs. Yes, it's a hell of an expenditure, but my it's my dime. 

  The only other thing I might suggest is look for lights and lighting that's specifically engineered for Iray. But really when it boils down to it, you're going to get the best improvement by improving your hardware in this instance. Adding a second GTX 780 will defininitely cut down the wait.
• mtl1 Posts: 1,508

  July 2015

  The easiest way to render faster scenes in iRay is to use less lights. The first thing I'd try to do is figure out why you have four spot lights, 1 point light, and a (assumed emitting) skydome. Have you tried using a meshlight of some sort?

  Another way is to decrease the path length, though it may affect your lighting setup negatively. If you're on interactive renders, you can also change the maximum number of bounces too.
• Lindsey Posts: 2,008

  July 2015

  Are you aware of the OptiX Prime Acceleration option on the NVIDIA Iray Render Settings?  It's on the Advanced tab, Hardware sub-tab.  Enabling it does result in faster render times for me.
• Testing6790 Posts: 1,091

  July 2015 edited July 2015

  Lindsey said:

  Are you aware of the OptiX Prime Acceleration option on the NVIDIA Iray Render Settings?  It's on the Advanced tab, Hardware sub-tab.  Enabling it does result in faster render times for me.

  Yeah, I have a 780 GTX, which is roughly in line with your 980.

  mtl1 said:

  The easiest way to render faster scenes in iRay is to use less lights. The first thing I'd try to do is figure out why you have four spot lights, 1 point light, and a (assumed emitting) skydome. Have you tried using a meshlight of some sort?

  Another way is to decrease the path length, though it may affect your lighting setup negatively. If you're on interactive renders, you can also change the maximum number of bounces too.

  I'll try that. I've never actually used a mesh light. The spotlights are a holdover from my 3Dlight days. For lamps I've always done a point light and a spotlight combo. The scene is supposed to be a house interior, so the lights are for house lighting, even though I only have 3 walls at a time, to give me visibility and the ambient light from the dome.

  Post edited by Testing6790 on July 2015