I really need to create light beam effects, something that I have failed at until now.
This is what effect i need to achieve:
I have tried alpha masked png's but Enscape does not like emitter billboards, I cannot seem to achieve a satisfactory result, has anyone succeeded in something similar?
Do you consider post-prod or you need it internally?
Do you consider post-prod or you need it internally?
I need animation, so no post prod, plus when 2 emitter based png's cross on another things go crazy.
what about to make cilinders /objects/ with some alfa mask to mimic that volumetric effect of spot light ....
what about to make cilinders /objects/ with some alfa mask to mimic that volumetric effect of spot light ....
I have tried that, problem there is when you make it an emitter it becomes a glowing cone
I think PNG will help
Looks like you will need to get creative and create a 2nd pass for post. Just break it down into what you need for that pass and create the model and materials to make just that. Not ideal but will get you there for now.
Try to model a cone with a constant emissive value. Than use a gradient opacity texture to make him 30% opaque at the top and down to 0% at the ground. Should look like what you intend.
Thomas,
Thanks for the tip.
I hope you guys are setting it up differently than me because I would love for this to work. Using 2.5, I just tried what I think you are saying (using opacity texture with emissive material) but it is not working well. See attached. This is similar to the results I had in previous versions which led me to give up on this approach.
As you can see the emissive amount does not vary with the amount of opacity as determined by the transparency texture. There is a cut off where areas of 50% or greater opacity are uniformly emissive, and areas 50% or less opacity are not emissive at all.
When I apply a texture that goes from 30% to 0% I see zero emissiveness throughout.
Are your results different than this? If so, please share your method of setting up your material.
Thanks!
Okay, here is a gradient, it goes from white to alpha, Enscape does not like gradients (you cannot see material as it's white on white here)
This is it in photo editor
This is the set up in SU:
This is the result in Enscape:
These god rays are hard to do on advanced non-realtime rendering. Actually the new RTX version of Enscape kind of has them, but not as dramatic.
Analyzing this picture, it seems like there is dust or smoke in the air. You COULD try to model an actually volume of smoke or dust and apply the true lumen values and IES files into the lights fixtures. I doubt it would work well, but could be worth trying.
Enscape does have built in godrays, but for real godrays to appear, light has to hit something physical: water droplets, dust, etc.
We will check the mentioned opacity-map + emissive bug. Thanks for trying that out.
Transparencies have always been on/off and I've never work managed to get them to work with emissive materials: I've only ever managed to get a smooth blend by using a b&w mesh. You can try this...
(I havn't tried using a PNG for transparency yet; might give a smoother result)
any new solution to this topic?
i also need to create beam lights that look consistent.
tia
If you want realistic beamlights, just use the IES files and lumen values from real theatre/entertainment beamlight manufacturers:
Otherwise, go vote on the Volumetric Light Ideas in the Feedback area:
https://portal.productboard.co…l/tabs/17-feedback-wanted
