Lights no longer working? Iray Preview hanging up
Jethal
Posts: 35
First time I've had to sit down and make a scene since the 4.20 update..
My lights don't seem to be working anymore, and when I try to preview a scene with more than 1 figure (gen8.1) it just keeps "Preparing Scene..." over and over.
I'm not sure what the deal is. I'm tried resetting to defaults. I tried re-installing Daz. I've tried re-loading preset render options that I've been using for years.
Nothing's working.. help?
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Through more experimentation, it's not that the lights arent working.. they're incredibly dim. I had to crank up a candle to a billion lumens to be seen
see attached screenshot.. every lamp on the posts have a light.. but i had to really crank up the one of the right in order to the seen
That looks like a variant on a ghost light - a sphere instead of a plane with a very low opacity. nVidia considerd the behaviour a bug (real objects don't behave that way) and has set the luminosity to be multipled by the opacity, hence the sudden dimming. You can try dividing the luminosity by the opacity (just copy the opacity value, then edit the lunimosity byt typing / after the current value and pasting in the copied opacity).
You're right! Opacity was set at 0.00000001 causing the lights to dim. Changing the ghost lights to 0.5 brought them back.. but also made the "ghostlight" visible.. which means that they're useless now. I'll have to find another way of lighting the scenes..
This is dissapointing, I suppose I need to learn other methods to improve lighting allowing better renders now.
The latest update is proving problematic, especially for inexperienced users such as myself.
There is a script to fix ghost lights https://www.daz3d.com/forums/discussion/548061/iray-ghost-light-fix-dse-for-daz-studio-4-20-o-later
Alternatively, the new behavior is that luminosity is multiplied by opacity before rendering. So another solution is just to increase luminosity wrt the opacity of the ghost light (for instance if opacity is 0.0001=1/10000, just multiply luminosity by 10000).
If you want details, there are at least 10 recent threads on this topic in the forums.
I will give it a shot thank you for this information. From what I have been reading though, ghost lighting leaves more fireflies now sadly. Fixing the NVIDIA issue is nice but it will take some adjusting to.
With the mentioned fix everything seems to be working fine, no fireflies as of yet, though I will admit my scene is very evenly lit.
-sighs-
yeah, all the native lights (spotlights, distance lights, etc.) are no longer working at all for me.. seriously wth
Sounds like you've got something going on with your install, or configuration, maybe even GPU drivers.
Posting a test render showing your problem along with the log of that render would help alot to diagnose what is actually happening.
I just re-installed Daz3d and tried again.. here are screenshots of my viewport, rendered scene, and my log
Yes, as my log will show, I have 2, RTX 2060's
i just found the issue
by messing around with the spotlight settings, it never occured to me to change the "Light Geometry". Point is not working anymore.. but every other setting does. And of course, as we already established, I have to crank up the lumens.. but, it works
i just found the issue
by messing around with the spotlight settings, it never occured to me to change the "Light Geometry". Point is not working anymore.. but every other setting does. And of course, as we already established, I have to crank up the lumens.. but, it works
There are some issues with those old drivers
https://www.daz3d.com/forums/discussion/comment/7277496/#Comment_7277496
You have driver 472.39 installed and your 2060's can run the current Studio driver 511.65.
Unless you need that ancient driver for some other software, I would update it.
updated that last night.. didn't make a difference.
This is a fresh install of daz and drivers
perhaps my settings are just messed up
Maybe, I know I spend a lot of time with lights and lighting.
Just finished this one this morning.
It's lit with just the HDRI.
The rest of it is tone mapping and other settings.
note: The png version wouldn't upload, so this is the jpg version.The colors are a bit off.
ok.. it was definately my settings
I found an old scene subset that I saved the tonemapper and enviroment options with (i normally dont save those with the scene) and the results were great.
Just saved a blank scene with my custom settings and loaded a more complicated scene and it works great
see below for my optimized scene file
yes, much better.
Good to see you have it sorted out :)