Using version 4.8.2
I have run into a bit of an issue in my game project where I have stationary lights through out my level since the lights can be turned on/off and change colour, flicker etc, but do not need to move.
The issue that occurs is that when the lights go off, the lower the metallic value is on a material, the brighter that material is when the lights go off, so if a material has yellow in it that has a metallic value of 0 and a roughness value of 0.4, it will still be perfectly visible in complete darkness.
A good example is the M_Orange_Shiny material that is used on the lever in the blueprint examples. Or the yellow colour on the M_Door material that comes in the StarterContent.
As you can see here, both the floor (which has no metallic value M_DemoFloor_Inst from content examples), the pillars (using M_Door material) and the blast door (contains M_Orange_Shiny) all are perfectly visible in pitch black darkness. But when I give them a metallic value of 1, they are no longer visible.
I should also note that they do not have any emissive values.
I’m wondering if this is some kind of bug, or is there something I am missing here?
If it’s not a bug, could someone point me in the right direction to where I can understand how to circumvent this when I create my own PBM’s.
Thank you in advance, your help is greatly appreciated