I’ve got a problem working with light sources. I already contacted OTOY and they confirmed an issue on their side but I really need a workaround and I also want to know if there’s someone else with the problem.
I am working on a night scene where I placed lights along the path. I created faces next to lights who do the “hard light work”. I created a diffuse material with a black body emission and set the material’s opacity to 0 to hide the light source. I use the same procedure for my interior scenes with lightning planes in front of the windows and for creating light inside buildings for night scenes. It used to work fine in V2, now it creates a bunch of errors and I don’t find a good workaround.
I’ll show you in pictures:
Pic 001: Here you can see the light sources as the material’s opacity is set to 1.
Pic 002: On this pic the light sources are hidden by material’s opacity set to 0. Now you can see the light intensity decreases considerably and the spot on the ground directly under the surfaces is dark as if the surfaces would cast a shadow.
How can I solve this?
Also I attached 3 more pictures with another example:
Pic 003: Lights are working good here. Material opacity is set to 1 so you can see the light sources. Power of the light is 40.
Pic 004: Also power 40 but material opacity set to 0 to hide the light sources --> You can see that the light intensity is now so low that you don’t even see the light.
Pic 005: Opacity is still set to 0. I increased the light power to 1000 to see if the lights still work. They do but now they create a lot of hot pixels.
I noticed that it works without problems on a small surface. But if the light surface increases, the error starts to occur.
OTOY’s support suggested to hide the light sources via Object Layer ID but that creates the same error for me plus if I choose “hide from camera” the surfaces appear in pure black… Also that won’t work for my upper example because the light sources are attached to the lamps (otherwise I would have to place them separately above every lamp).
Is there anyone else with the problem? How are you working around that?
I have 3 customer scenes at the moment with need of light sources and I am a bit desperate right now…
A. Operating System, Windows 10, 64bit
B. 2x Titan X + 1x GTX 780
C. RAM Capacity: 32GB
D. Nvidia driver version: 378.66
E. OctaneRender Standalone version: 3.06
F. OctaneRender plugin version: 3.06-4.33
G. Host application version: 3ds max 2017, Built 19