Loading...
> >

iRadiance Iray Mesh Lights Don't Work Properly

Richard John SRichard John S Posts: 391
in Daz Studio Discussion

Is there a certain way to setup these lights, or a certain environment they have to be in? I tried the presets but no matter what happenes, I always have grain and the render progress is at 0% all the time even with 500 iterations. With other lights such as HDRI I definetly get a much better image with hardly any grain.

Below is an image I rendered for about 4 minutes with 500 iterations.

Product:
http://www.daz3d.com/iradiance-hdr-mesh-lights-for-iray

Comments

  • evilded777evilded777 Posts: 2,465

    Richard... were you using one of the Presets? What exactly did you load?

     

    Some of the presets are particulary slow to render as they add multiple "lights".

     

    They most certainly DO work, but... in some cases you may need to wait for them.

  • Richard John SRichard John S Posts: 391
    edited July 2015

    I loaded one of the presets near the end of the icons. It gives light, but its all grainy even after 500 iterations. When I use a dome HDRI a much better image comes out ar only even 100 iterations. I did another test and after 15 minutes the image wasn't too much better at all. I could have had that image fully rendered with the dome HDRI in about 6-8 mins. Are mesh lights suppose to be much slower than the dome lights?

    Post edited by Richard John S on
  • fastbike1fastbike1 Posts: 4,078

    I have the same issue. I let a render go for 4 hours. At that tiem it was still grainy and showed 0) progress. The same image rendered cleanly to 96% in 55 minutes with photometric lights.

  • will2powerwill2power Posts: 270

    May I ask what kind of video card you're using? Hardware can certainly play a part in this --it would be helpful to know what kind of equipment you're working with. 

  • evilded777evilded777 Posts: 2,465

    These lights are nifty, but they are indeed very, very slow (at least the presets are...used solo, or one at a time, they are much quicker).

  • DushkaDushka Posts: 17

    It seems that these lights do not access the GPU, only the CPU. If you load TechPowerUp GPU-Z, you will see that the GPU Load doesn't go above 3%. I hate to be negative, but I think I have wasted my money on this set. I would love for someone to tell me I'm doing something stupid. I can't find any documentation.

  • Richard HaseltineRichard Haseltine Posts: 102,344

    Whether the CPU or GPU is used will depend on the whole scene, not just which lights you use.

Sign In or Register to comment.