Iray Question... Easy way to turn of emissive lights in scenes?
Serene Night
Posts: 17,704
in The Commons
I would like to turn of unneeded emissive surface lights to speed up render times. Is there way to easily find these and turn them off?
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Comments
V3D Iray Light Manager Pro
This is one of the most useful scripts I've bought so far. Works not only on lights but also emissive surfaces...all in one place. Turn them on, off or adjust them at will.
Laurie
Thanks! To turn the light off, is all I need to do is turn emissive two-sided off, or do I need to make everything zeros to turn it off.
No, the Two-Sided switch isn't between two-sided and off, it's between two-sided and one-sided. What you need to turn the light off is to reset the Emission Color parameter to all black (0, 0, 0).
Yep, make sure it's black because if it's any color of gray above black it will still emit a little bit. Easy way is to just click the little settings icon and reset. It's black by default. The only reason I suggested the Iray Light Manager is because if you've converted a bunch of 3DL shaders to Iray, it's a really quick way to see if anything is emitting if it's a large set ;).
Laurie
V3D Iray Light Manager Pro, that Laurie recommended, is a great product. I use it a lot.
Expand all in scene tab (right click:Expand all), select all (ctrl-a in windows), go to surfaces tab, select all (ctrl-a), make emission colour black.
That light tool looks useful though - wishlisted
Thanks! I appreciate these tips. I was really struggling with iray taking forever to render a scene, until I realized everything had emissive shaders including the trees and grass and Iray was punishing me by rendering it all dog solow.
By the way, 2-sided emissive is a huge resource hog. You should always check to see if it's absolutely necessary, and if not, change it to 1-sided. For example, a plane lighting a room, really only needs to be 1-sided.
Heh, yes, I learned that the hard way the first time I tried setting up Iray lighting for Jack Tomalin's Classic Deco scene, with those big light fittings. The little light (the one between my ears) went on eventually...
Hi, i just have the opposite Problem.
What can I do, if there is no 'Emission' parameter in the surface tab of a given object. I want to make a surface emitting light, but there is no such parameter in it.
Does anyone know how can i create that?
Sample: i want to use this existing lamp object from a west park package and make the tubes in it emitting light, but the parameter is missing.... possibly because it is a cylinder?
Apply the emissive shader to it. There's a default one that comes with DS.
@ ChangelingChick
> Apply the emissive shader to it <
thank you...but i'm still a bloody beginner, so this sounds to me like 'easy, just wrench the supersonic button and add some moon unicorns'
should read: can you please give me some hints how to do it?
Wolfprivat,
Scroll down to near the bottom of the material and find Emission Color. It's set to black by default. Click on the color to change it. As soon as you set it to white (or light yellow, or what ever color you want your light to be), 5 new channels will appear. The main one you'll be concerned with is the Luminance channel. That controls the strength of the light.
The Emissive shader or the Iray Uber shader will work to give the perameters you need. Going by the screen shot the light is still DAZ Studio 3Delight mode.
Select the surface you want to be emissive, go to your content library under Shader Presets --> Iray --> DAZ Uber and double click on the Emissive shader.
@ ChangelingChick
thank you! Feel yourself hugged a thousend times...
WORKS!
At the risk of covering more than you need, this resource includes the information you're looking for:
http://thinkdrawart.com/daz-studio-iray-tutorial-for-beginners
One aspect it doesn't appear to mention is that you won't be able to find the default Iray materials if you didn't download and install the Default Resources for DAZ Studio package, which includes these files. If you're doing a manual install of files, you'll find it in the Daz Studio Pro 4.x (4.8 or 4.9) product that you "purchased." Or, it should appear in the automatic installers
These are all very helpful tips and explanations! Thanks everyone for your replies here.
@ Tobor and all others who answered to my question, thank you all!
bad converting and we pay for it. Not good IMHO, I have found this alot these days and a high number of products.
Please write a help request for the ones you find. I've submitted several on this issue myself. It is a pain to have to write a help request to fix something like emission being used where it shouldn't be, and I agree that we shouldn't be getting this in purchased products! If we only grumble to each other here in the forum, Daz does not become aware of the extent of the issue. Maybe a deluge of help requests will get Daz QA to check for this before releasing a product. (Grumbling here does help make other users aware of the issue, so they can watch for and try to fix it in their scene.)
Yeah ok will do... I stopped monaing at DAZ a while back due to not replying in a timly manner.