Using Source Lights with Luxology

We are currently using Microstation V8i (Select series 1) and are attempting to do a number of renders of some apartment interiors. We are getting fairly good results from luxology however we are still having problems with source lighting.
We go through and set-up a series of area light or spots in the Microstation file.
With a quick smooth render we can see that the lights are illuminating the elements of the model as expected.
Rear wall and Ceiling are illuminated

 


However once we run the same scene in Luxology global illumination seems to take over and the source lighting is ignored. We can see the light sources reflected in the green glass wall but there is no light on the ceiling.

We have played with ambient, solar and flash blub with the same results.
Have looked through all the settings with out much luck.
Could some point me in the right direction to get Luxology to use source lighting along side global settings?

  • Hello,

    Have you already tried to lower the intensity of the sun?

    Wim

  • Hi,

    Are you using lights from environment ? Or just have Solar and Ambient ?

    You will have to bump up the lumens for the source lights so that they are brighter than the solar.

    -Nilesh



  • I have been caught in this trap several times: Make sure 'default lighting' is off in the view attributes of the rendered view!!
    HTH  André
  • Hi

    We actually have Solar, Ambient and Flash blub all turned completely off.

    Also the Default Lighting setting is off as well.

    Tried something a bit off the wall last night and put the model inside a "box"

    Started to see the individual light sources after that, however if one is stronger than the others it seem to wash the others out completely.

    Have not been using any environments as yet

  • Hmm, you did not say what type of source lights you are using. I had one case a while back where a user had area lights pointing up instead of down. Is your model full scale? Light falls off based on inverse square law, so the size of the model matters? How bright are these lights in lumen? How many are there in the scene? Are they in fixture that could be blocking the light ( common mistake) try turning shadow casting off on your source lights and see what happens.

    Finally it would be much simpler for me to help you if could post the scene or send it to me jerry.flynn@bentley.com I'll be more than happy to take a look  at your file.

    When you make one light much brighter than the others it will diminish the effect from the other lights. Imagine that you have two lights in the scene and you use 1000 lumen for one of the lights and 10,000 lumen for the other light. When you render the scene the 10,000 lumen light being ten times more powerful will tend to overpower the lesser light.

    The same thing happens in the real world. Imagine headlights on a car on a bright sunny day, you can see that the lights are on but I bet that you will barely see any effect from the lights on road in front of the car.

    Cheers,

    JF