Daz 4.20 issue

[668 Neighbor of the Beast]

I've never had a prob with updates before so I charged in blindly and updated to 4.20. Now, while I can still select items via the scene tab, I can't select anything at all through the main viewing port.

Is it a Daz issue or am I missing something? Any advice would be appreciated.

EDIT: Sorry, now it's working again however ghost lights aren't.

 

[Deleted member 1121028]

"Fix" for ghost light :

You must be registered to see the links

Not 100% fixed as matte shadow still show in reflexion. Old ghost light won't work well as Iray changed (light is multiplied by density).

Since it's about 4.20, there is also a new shader for (OpenVDB) volumetric effect:

You must be registered to see the links

 

[668 Neighbor of the Beast]

"Fix" for ghost light :

You must be registered to see the links

Not 100% fixed as matte shadow still show in reflexion. Old ghost light won't work well as Iray changed (light is multiplied by density).

Since it's about 4.20, there is also a new shader for (OpenVDB) volumetric effect:

You must be registered to see the links

View attachment 1661927

You're a legend, thank you so much

 

[668 Neighbor of the Beast]

Nah, not having any luck with the fix. It's more than likely me, I'm kinda new to all this but I've followed everything on the post (I think) but not happening for me. Thinking I might be best off just going back to 4.16

 

[Deleted member 1121028]

Nah, not having any luck with the fix. It's more than likely me, I'm kinda new to all this but I've followed everything on the post (I think) but not happening for me. Thinking I might be best off just going back to 4.16

That's how it works basically :

Open a new scene and load any char.
Then in menu, Create>New Primitive :



Place your plane as it was your light :



Select your plane, and go in the surface tab to make it emit light :



Run the script on your plane (apply fix):



Restart the Iray preview to see the change :



You should have those options on the parameter tab with you plane selected :

 

[668 Neighbor of the Beast]

Brilliant. I was using an Iray Ghost Light Kit which it didn't work on. As soon as I set up the primitive it was all good. Thanks heaps for taking the time to help me out here and walking me through it, good karma to you buddy

 

[Deleted member 1121028]

Brilliant. I was using an Iray Ghost Light Kit which it didn't work on. As soon as I set up the primitive it was all good. Thanks heaps for taking the time to help me out here and walking me through it, good karma to you buddy

Np. If you have old scenes using "old" ghostlights, reset to 1 the cutout opacity (set generally to ~0.0000001), before/after running the "fix" script.

 

[function2020]

That's how it works basically :

Open a new scene and load any char.
Then in menu, Create>New Primitive :

View attachment 1662066

Place your plane as it was your light :

View attachment 1662067

Select your plane, and go in the surface tab to make it emit light :

View attachment 1662073

Run the script on your plane (apply fix):

View attachment 1662078

Restart the Iray preview to see the change :

View attachment 1662080

You should have those options on the parameter tab with you plane selected :

View attachment 1662082

sorry, I don't understand what happened, why should apply that 'fix', what's the problem for any emission plane or ghost light before apply it?

 

[Deleted member 1121028]

sorry, I don't understand what happened, why should apply that 'fix', what's the problem for any emission plane or ghost light before apply it?

"GhostLights" used to work like that, it's a primitive that emit light with very very low opacity that make it invisible.
New Iray change from Nvidia, to be more physically correct, make it that light is now multiplied by opacity value.

So lets say your old GhostLight is 100000 lumens value with an opacity of 0,00001, your effective lumens value is now equal to 1 (you can hardcore crank your lumens value but you will more likely create noise & artefacts). In order to prevent that, the "fix" add 2 Iray propreties to the primitive; one making it a

You must be registered to see the links

, the other making it invisible to primary rays. Result is the primitive is still nearly invisible with an opacity of 1.

 

[668 Neighbor of the Beast]

Np. If you have old scenes using "old" ghostlights, reset to 1 the cutout opacity (set generally to ~0.0000001), before/after running the "fix" script.

View attachment 1662296

OK, so the Ghost Light cutout opacity set at 1 was too opaque to let ambient light through from an HDRI background. After messing around with it a bit I've reduced the opacity down (to 0.4 atm) which lets the HDRI light through but I've had to bump the GL luminance up to compensate (800000.0). It seems to me that the fix hasn't really worked even though I've checked both the new additional settings and they both look to be correct. Now my render times are through the roof. I'd been working on a series prior to updating DS and trying now to match the lighting I'd been using previously. Perhaps I'm missing something here.

This was the original lighting, HDRI through the window on the left and GL inside the window for a bit of fill also from the left. Previously I could pump out a render of sufficient quality in around 40 mins, now, after more than an hour, the render progress hasn't even moved.


Any input would be greatly appreciated, cheers.

 

[function2020]

OK, so the Ghost Light cutout opacity set at 1 was too opaque to let ambient light through from an HDRI background. After messing around with it a bit I've reduced the opacity down (to 0.4 atm) which lets the HDRI light through but I've had to bump the GL luminance up to compensate (800000.0). It seems to me that the fix hasn't really worked even though I've checked both the new additional settings and they both look to be correct. Now my render times are through the roof. I'd been working on a series prior to updating DS and trying now to match the lighting I'd been using previously. Perhaps I'm missing something here.

This was the original lighting, HDRI through the window on the left and GL inside the window for a bit of fill also from the left. Previously I could pump out a render of sufficient quality in around 40 mins, now, after more than an hour, the render progress hasn't even moved.
View attachment 1663884

Any input would be greatly appreciated, cheers.

did you try to go back to your origin settings, and just multiply the lumina for 1000 times? This is the Ghost Light 2 author's plan to modify his product.

 

[668 Neighbor of the Beast]

did you try to go back to your origin settings, and just multiply the lumina for 1000 times? This is the Ghost Light 2 author's plan to modify his product.

TY, I'll give it a go shortly

 

[Deleted member 1121028]

Seems like the script was updated. That said can't really help much as I'm in rendering queue, and don't really use ghost lights. Imho the problem with cranking luminance to such high numbers is how prone it gonna be to fireflies, could be wrong but I'm skeptical. Maybe refraction index/weight set to 1 could help to remove some generated shadows by the not so invisible GL.

 

[668 Neighbor of the Beast]

Seems like the script was updated. That said can't really help much as I'm in rendering queue, and don't really use ghost lights. Imho the problem with cranking luminance to such high numbers is how prone it gonna be to fireflies, could be wrong but I'm skeptical. Maybe refraction index/weight set to 1 could help to remove some generated shadows by the not so invisible GL.

Thanks, I'll try that too. Perhaps I've just become too reliant on GLs and a shake up will do me good