Daz 3D is part of 
Connect
DAZ Productions, Inc.
7533 S Center View Ct #4664
West Jordan, UT 84084
Licensing Agreement | Terms of Service | Privacy Policy | EULA
© 2025 Daz Productions Inc. All Rights Reserved.
Comments
If I let it render once, the menu goes away and I can't seem to re-click it.If you stop the render the controls should come back.
Another Problem; this time I need some advise for the Render Settings of NVIDIA Iray.
When I render DAZ Big Cat 2 with NVIDIA Iray the complete Mouth (Teeth, Tongue and so on) render completly blank. In 3Delight they render fine.
Okay, I'm able to push the boundaries a little further. I pulled up a Dynamic Clothing test I did when I was trying to get my mind around how it worked. The dress is frozen, so it's not technically dynamic any more, but it was a good test for time.
4.7 : It took the first render 2:38 minutes to finish, but it also required a pre-processing of 72 images. Subsequent renders only took 1:18 minutes.
4.8 : It took 3:16 minutes to render from the main viewport. It didn't to any pre-processing because the Aux Viewport did it prior to doing the render. What's odd is that it only pre-processed 50 images, not 72.
So, the Iray took 2 minutes longer. Now, my nVidia is only a 650m and only has 512mb of ram. Also, the Aux Viewport was able to render the scene much faster, but it was also like 1/8th the size.
There are also anomalies with the render. I have a plane with a cube under it. Since the plane won't interact with the Dynamic Gown, I place a cube 0.001" under it. 4.7 had no issues with this, but the plane stops rendering once it reaches the cube.
Points and spots should not be used in a PBR; they are very unphysical and result in extremely hard shadows. When using PBRs, you should always use area/mesh lights for the most realistic results (when not using image based lighting or a sun/sky model). I've not messed with the iRay beta, but from what others have said, there is a shader included to turn a surface into an emitter (e.g., an area light). That is what you should use to light everything in a PBR. Either apply it to surfaces already in the scene (e.g., many Sci-Fi prop sets have surfaces in them intended to be emissive) or create a plane primitive and apply the emission shader to the plane. Then size and place the plane like you would a softbox in real life photography.
Does IRay support surfaces with both a base material and emission at the same time? This is needed to prevent lightsources in the camera frame from being transparent. (Sometimes transparent is good, like for a lightsaber, other times not so much.)Not entirely true. We did include Photometric Point lights and Spot lights with this beta, specifically for use in Iray.
Light sources in the camera frame being transparent? Aside from the Photometric lights, not in Iray.
There are no lights used in this Scene.
This Scene has only the Big Cat 2 inside.
Is the Ground plane for Iray turned off? Render Settings > Environment >Ground > off..
See if that helps.....
Kat
That's what I thought. Thanks.
I have try to install 4.8 and I get an error, because some directories (that I never had before in my current 4.7 installation) like "Applications" are missing. Now the installtion always failed and I can't do anything. Unfortunetely I can reconize the errors, because the nstallation fails now, but don't show the error page again. Any ideas.
There are no lights used in this Scene.
This Scene has only the Big Cat 2 inside.There are two light sources in that scene.
You have sun/sky providing light. You also have the Headlamp (Think of it as a Camera mount flash). If you had no light, your render would be black. :)
There are no lights used in this Scene.
This Scene has only the Big Cat 2 inside.
If there are no lights, the headlamp can be very bright. Especially on a close up. You may need to play with the mouth if it used any type of shader settings other than default......
Kat
No disrespect Spooky, but you speak as if this is a minor consideration - speed is of the essence to many 3D artists, particularly if multiple projects are on the go. Therefore any significant increase in speed to provide the same result is in itself, significant.
So what you're saying is that bundle of 20 skydomes I bought from new releases, because I was certain they were offered because of Iray, was a bad idea lol
Gotcha. I will be working today with the photometric spots and PLs in ds. Quick question;
Under Nvidia Iray I can choose cpu and or my nvidia card. Should I check 1 or both?
There are no lights used in this Scene.
This Scene has only the Big Cat 2 inside.There are two light sources in that scene.
You have sun/sky providing light. You also have the Headlamp (Think of it as a Camera mount flash). If you had no light, your render would be black. :)
OK....
I did not find it... as you can see in the Screenshot the Scene Tab does not provide a Camera and the Parameter Tab also did not provide a Camera.
I thought the mouths (at least) of the Big Cats used a custom shader, so that would not translate (well) to Iray?
No disrespect Spooky, but you speak as if this is a minor consideration - speed is of the essence to many 3D artists, particularly if multiple projects are on the go. Therefore any significant increase in speed to provide the same result is in itself, significant.
Speed is definitely a huge perk. But we have several people concerned that they can not use the features at all if they do not have a supped up Nvidia card. This is to reassure them that the only thing they miss is added speed. The settings and render results are exactly the same. :)
Kat
Depends on your card. If you have a single beefy GPU, or multi-gpu (non-sli) then uncheck the CPU, as Sickle pointed out in another thread, enabling the CPU when your GPU is capable it can slow things down. Why I have no idea, I'm not that technical with PBR.
I'm running a single EVGA GTX 770 4GB FTW Edition and I've unchecked CPU and I've been fine, but then I've only been doing single figures and the lighting. I haven't set up a full scene yet.
I thought the mouths (at least) of the Big Cats used a custom shader, so that would not translate (well) to Iray?
They use Texture Maps; I don`t know if they use Shader, too.
Sorry if this has been asked before... I have a Geforce GTX 660, which should be able to support CUDA. I'm running the 4.8 64 bit version on a Win7 system.
IRay works fine when I run it via CPU, but when I use the graphic card, it gives me a "black screen" output render.
Any idea what the problem might be?
I thought the mouths (at least) of the Big Cats used a custom shader, so that would not translate (well) to Iray?
They use Texture Maps; I don`t know if they use Shader, too.
My recollection is that MB2 uses a custom shader on the moth - it was a problem in one of the other alternative renderers too as I recall. It may be that the parameters simply aren't named in a way that allows them to eb picked up and converted, in which case you may need to make a note of them and then apply them to a standard shader for use in Iray. if that is it, please make a report as the base would need to be updated somehow to work with Iray.
No disrespect Spooky, but you speak as if this is a minor consideration - speed is of the essence to many 3D artists, particularly if multiple projects are on the go. Therefore any significant increase in speed to provide the same result is in itself, significant.
And if you need more speed, you can throw hardware at it. If you really want speed you can throw an NVIDIA VCA at it.
If you don't throw hardware at it, for most scenes, providing you properly light your scene in 3Delight, the render times are, on average, the same. You have lost nothing in terms of speed, but gained the ability to increase your speed by throwing money/hardware at it.
Comparison. Same computer. Lit by a single HDRI, in the 3Delight render the HDRI was placed on an Uber Environment 2. Same hardware, same HDRI map. The Iray render took 18 minutes, 23 seconds. Iray (CPU only), the 3Delight image took 72 minutes 12 seconds. (Note this is a straight load and render, no changes were made to the surfaces.)
Is it worth the extra wait time?
Depends on your card. If you have a single beefy GPU, or even 2 beefcakes in SLI then uncheck the CPU, as Sickle pointed out in another thread, enabling the CPU when your GPU is capable it can slow things down. Why I have no idea, I'm not that technical with PBR.
I'm running a single EVGA GTX 770 4GB FTW Edition and I've unchecked CPU and I've been fine, but then I've only been doing single figures and the lighting. I haven't set up a full scene yet.
SLI is not required. In fact NVIDIA recommends disabling SLI and ECC (High end Quadro and Tesla Cards).
They use Texture Maps; I don`t know if they use Shader, too.
My recollection is that MB2 uses a custom shader on the moth - it was a problem in one of the other alternative renderers too as I recall. It may be that the parameters simply aren't named in a way that allows them to eb picked up and converted, in which case you may need to make a note of them and then apply them to a standard shader for use in Iray. if that is it, please make a report as the base would need to be updated somehow to work with Iray.
Maybe that`s the Problem.
I send a note to the Support.
Render I did testing light bounces and lighting. Should have let it cook a bit longer:(
They use Texture Maps; I don`t know if they use Shader, too.
My recollection is that MB2 uses a custom shader on the moth - it was a problem in one of the other alternative renderers too as I recall. It may be that the parameters simply aren't named in a way that allows them to eb picked up and converted, in which case you may need to make a note of them and then apply them to a standard shader for use in Iray. if that is it, please make a report as the base would need to be updated somehow to work with Iray.Thanks Richard. It is indeed a custom shader.
So what you're saying is that bundle of 20 skydomes I bought from new releases, because I was certain they were offered because of Iray, was a bad idea lol
Gotcha. I will be working today with the photometric spots and PLs in ds. Quick question;
Under Nvidia Iray I can choose cpu and or my nvidia card. Should I check 1 or both? Sky domes work, if you light them up. :) It isn't difficult to do, but it is something you will have to do to use them.
Note in most cases, check both for rendering, unless you know the scene does not fit on the video card. :)
Is there a way to shrink skydomes or enviroment maps? Sometimes when using an hdri image it is way to zoomed in, and I cannot fit the entire sky in the viewport.
First decent one I've seen, everything else looks a bit dull and flat.
CHEERS!