Is it Possible to Set iRay Preview Faster When Moving Props?

plan111

Hi.

I just started playing around with rendering props over HDRI backgrounds with iRay. When moving the prop around, the background disappears and the movement is very slow, making positioning the prop a tedious trial and error process.  Is there a setting in DAZ where w can reduce the resolution in the viewport as we move the prop around. When doing so, iRay shouldn't be trying to draw everything perfectly right away, it should wait until we have repositioned the prop to start trying to redraw at full resolution. Or maybe I have no idea what I'm talking about, which is probably the case, like I said, I just started playing around with HDRI BGs.Any settings I can change or any workarounds?

Thanks.

Windows 10
GTX 1070
Intel 6 core
32 G RAM

kenshaw011267

change the viewport to texture shaded. Do not use Iray preview all the time.

plan111

I know, but then I don't see my HDRI background. Is there a way to see it in Texture shaded? I want to align my prop with something on the background. I noticed that DAZ doesn't use a lot of power on my GPU. Never goes over 25% on the GPU. If I uncheck CPU in the Render-Advanced Tab, then the CPU maxes out and DAZ doesn't use the GPU at all. And that's when moving the camera around. When rendering, it doesn't use the GPU at all.

 

MelanieL

There's this product which creates a preview in the textured view: https://www.daz3d.com/ibl-master-for-daz-studio - (maybe look out for it on sale sometime?)

Fishtales

You can also set the AUX Viewport to be more responsive.

Go to the menu Windows/Panes(Tabs)/Draw Settings. Make sure the Draw Style is Nvidia Iray in the Editor Tab.

Got to Drawing and set....

Draw Mode.............Photoreal

Inactive Viewport Delay..........On

Response Threshold (msec).......10

Manipulation Resolution......1/4

Draw Node Avatars...........Off

These are my settings but they can be changed for settings that work for you.

You might still have to wait a bit on it redrawing depending on the scene though.

plan111

Thanks for the replies.

@Fishtales: Setting the manipulation resolution higher helped a bit. I thought about loading a 1k HDRI for the prop positioning then replacing it with an 8k for rendering, but the bg still disappears when moving the camera. Although something weird happened in one of my projects. It started out behaving as described here, then all of a sudden, after 10 minutes of working on it or so, the bg started showing up when moving the camera and everything went very smooth. This happens only with that project. And like I said, it only started to happen suddenly. If I start a new project and apply the same prop over the same bg, it starts stuttering again. Don't know if this has something to do with the project loading in memory or something. 

@MelanieL: I don't mind paying full price if it works for what I need. Guess I'll try it out. I spent a lot of time looking for a way to get some shadows from 3DLight renderings, this seems to do that too. So, might kill two birds with one stone. 

Have a nice day everybody.

kenshaw011267

plan111 said:

I know, but then I don't see my HDRI background. Is there a way to see it in Texture shaded? I want to align my prop with something on the background. I noticed that DAZ doesn't use a lot of power on my GPU. Never goes over 25% on the GPU. If I uncheck CPU in the Render-Advanced Tab, then the CPU maxes out and DAZ doesn't use the GPU at all. And that's when moving the camera around. When rendering, it doesn't use the GPU at all.

 

Those are rendering settings. You should probably not ever use the CPU if you don't have to. If DS doesn't use your GPU there are several possible culprits. 

1) your scene is too big to fit on the card.

2) you have old drivers not supported by the version of Iray you're using.

3) The Nividia control panel has somehow gotten set to not allow DS to use the card.

I'd check them 3, 2,1. If none of those are true then you have a serious issue and will need a lot more than a task manager screenie.

plan111

1- it's only an 8k HDRI as bg and a vehicle, not too many polygons. My card has 8 Gig of memory, so I don't think that's the problem.

2-  I have the latest version of Daz (4.11), and the latest Nvidia drivers (431.70. The Studio driver, not the Game Ready Driver. Don't know if it has anything to do)

3- The Nvidia CP does allow Daz to use the card. Like I said, when moving the camera around, the GPU sometimes goes up to 25%

The GPU works on other apps. It works with iRay on iClone while rendering. It works on Premiere Pro for rendering the FX. That's why I think it's a DAZ issue. I installed the latest drivers 2 days ago, maybe DAZ doesn't use them correctly. I'll need to keep checking.

Thanks

plan111

I just saw this on the Task Manager. The 'Cuda' section on top is maxed, but the GPU is at 2%. When rendering that is. Does that mean anything?

 

 

kenshaw011267

It means the GPU is rendering the scene. You should uncheck CPU, it almost certainly slows down your rendering.

plan111

I did. I also did a few tests, and rendering just one car with GPU only took 43 secs, with CPU only it took more than 6 minutes. It's a bit confusing though, when you look only at the main tab in the Task Manager and you see that your GPU is almost doing nothing.

Thanks.

kenshaw011267

plan111 said:

I did. I also did a few tests, and rendering just one car with GPU only took 43 secs, with CPU only it took more than 6 minutes. It's a bit confusing though, when you look only at the main tab in the Task Manager and you see that your GPU is almost doing nothing.

Thanks.

CUDA is a relatively small part of the GPU so an application only using CUDA will appear to be using less than all of its capacity, assuming the card has enough capacity I would imagine a 1050 or the like would look very different from a 1070.