Fade emissive material
I have a completely dark world, and am lighting it up with emissive materials. Essentially, I want to be able to draw a gradient on the ground, but this has proven quite a challenge. I have tried making the color nearly black, and also adjusting the color's alpha. Neither work.
What is the best strategy to get this to work? I thought I may be able to light the world but just make nothing react to light unless I wanted it to, but it looks like this isn't possible.
Thanks in advance!
asked Apr 24 '15 at 03:54 AM in Rendering
If you provide some more details about how this would work I can suggest some approaches. Currently I am not sure what type of gradient you are looking for so I am not sure what to suggest.
Emissive materials should be able to cast light into your scene using lightmass just fine, but I am not sure what you mean by wanting to draw a gradient. Do you mean to define the shape of the emissive part of the material? Are you wanting to animate this somehow? It might be a challenge to 'reveal' the lit world along with the emissive but if you mean the world is completely black until then, it makes it easier.
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