Forgive me if this has been covered, but my search fu is exceedingly weak.

I've owned P8 since launch, but don't use it much (I prefer Studio), but I am trying to play with it and learn its new features, etc.

Today I learned about the new light attenuation controls for spotlights and pointlights.

Problem is... it never seems to change.  I start with a completely new scene, create a single spotlight... go to the Attenuation option and select either Inverse Linear or Inverse Square and the display never changes from Constant.

What the hell am I missing? Shouldn't this be as simple as point and click?

Even went so far to change my units to PNU, thinking that I might NEED to since the lights work with PNU.  No joy.

Manual is no help.

I'm not sure why that's happening for you. It does change for me. You're postive your light is a spotlight and not an infinite light? And you have the latest service release? (SR3)

Laurie

I can't reproduce this, even fiddling with a variety of settings (inches, feet as measurement units, raytracing on/off etc).  Contact SM support, I think you've probably found a bug.

I have tripled check the light type, even switched it around.

Pretty sure I am on SR3, but since the Help> About display does not SAY SR3, and I just reinstalled everything I am not 100% sure.  version displays as 8.03xxxx.  I THINK that means SR3.

Yeah I'd say you've found a bug.  Contact SM.

Quote - Problem is... it never seems to change.  I start with a completely new scene, create a single spotlight... go to the Attenuation option and select either Inverse Linear or Inverse Square and the display never changes from Constant.

What do you mean by "the display". 

Do you mean the value displayed/shown in the attenuation control GUi element doesn't change? (It should)

Do you mean the preview of your scene looks the same? (It will  - no change - preview doesn't do falloff)

Do you mean there is no change in the render? (It should)

I got the impression he meant the setting on the control in the Parameter Dials window but those are good questions to ask.

Quote - Do you mean the preview of your scene looks the same? (It will  - no change - preview doesn't do falloff)

I have noticed that preview display does change to certain degree if spotlight is farther away.  It appears not to change if light is close to an object in question.

One thing I do notice is that when change the spotlight to say, inverse linear, all the infinite lights will then say that also.  There is no effect on them (because no degree of infinite, I suppose) except the label.

value displayed/shown in the attenuation control GUi element doesn't change.

I believe that the light does respond... purely based on how SemiDieu's light guide functions.  I have not tested enough to see if that light is actually changing.

It threw me when the GUI element remained "Constant", no matter what I did.

Quote - value displayed/shown in the attenuation control GUi element doesn't change.

That's a bug for sure then.