Hey all,
whats your best suggestion to render a big format LED screen, where you can still see the dots and the black space between?
I tried a light emitting plane behind a surface with thousand of holes, but thought the render time could be reduced with for example a RGB screen texture channeled on the light emitting plane. I havent found any Corona references though how that would work.
Thanks in advance!!
Sounds like the texture would be the way to go, as for any TV screen - create a plane, paint it with the Corona Light Material, and drop the texture in as input to that. You can then choose whether it emits light or not. https://youtu.be/y8L4Lfem1uA is an old two-part tutorial but still applies today too, for the most part.
Lots of alternatives - you could just add that grid effect in Photoshop, and then that’s what gets used as the texture in the Light Material.
I think mosaic filter would give you more life-like result than simple grid overlay, because individual pixel must be uniform in colour, but otherwise i fully agree with Tom, as with almost everything in CG there is more than one way to skin a cat.
Might be useful, might be not, but a Corona/C4D user made something similar for a CRT screen. He talks a bit about it here. The end result was rather good.
Amazing thanks everyone! ill give it a try 
The easiest thing will be to use the texture as is, then map a Gradient/Gradient Ramp with radial gradient, optionally with triplanar or real world scale to set the size for LEDs.
