View Full Version : Backdrop / Image Based Lighting - only reflect on object

09-30-2013, 10:20 AM
Hi guys,
I would like to know how to properly implement a image based lighted render.
the only trouble I'm having is my floor will receive the data from the image based lighting where I only want it to recieve the shadow from the object, And then have my background completely white too.

I've gone into the compositing section and put my background to white my only issue is the floors reflection! I'd like it just to listen to the normal lighting and not the HDR.

Thank you!

09-30-2013, 01:25 PM
Not sure which version you are using so thngs may have changed.

But there is an option in the Object Properties panel under Lights to "Exclude Radioisity"

With that off and "Unseen by Radiosity" left unchecked in the Render Tab of the same panel, objects will see the radiosity from it (occlusion and light bounce) but it will not get the light from the IBL.

10-01-2013, 01:05 AM
Create a pure white image with photoshop
In layout, select the surface of your floor in the surface editor --> Environment tab
Set the Reflections options to "Raytracing + Spherical map" and select your white image for reflection map.
That should do the trick

10-01-2013, 01:12 AM
Have you tried assigning shadowdensity material to your ground plane?
Lw11 has a new way to do this via nodes. Sample content with the ferrari on the beach.