Hi everyone!
I'm currently working on a fairly "illuminated" scene, where I use loads of dim instanced point lights. Normal lights provide the option of setting an attenuation radius, which usually speeds up rendertime a lot, but the "light template" does not provide that option.
As shaders I use the asadlight and rayshadow. Asadlight has something similar, which is an attenuation ramp that gets multiplied with the attenuation, so you can set it to black after a certain distance. I know this should visually have the same effect, but is it as efficient as the radius option in the normal point light?
Is there any other way to "clip" light?
The reason I'm asking about this is because I set the attenuation radius to black after a certain distance. I set up a render and it takes ages, despite the fact, that its only in range of about 4 lights. Once I deactivate the other lights, the render goes super fast.
Any advice, experience, wisdom or other info is much appreciated!
Thanks a lot
Sustaxata