How to rebuild lighting in ue4 update#
How to rebuild lighting in ue4 Offline#

In UDK, emissive plane in the doorway would act like something similar, but in Unreal 4 that's gone, for now (4.6 has only direct emissive, which in this case is pointless). So to solve something like this, the only thing I can think of is using something like Mental Ray's 'skylight portal', which takes environment light and 'forces' is into interior.

How to rebuild lighting in ue4 Offline#

I did the test rendering with Corona renderer in max, and logically the results were fairly close (of course, offline renderer is more accurate). Thing is that in this very extreme case, the second room is completely occluded, so even Environment Light cannot get in there (just tried it pure white with 100(!) intensity and got complete blowout in the lit areas, still pitch black in the far room).

If I understand correctly, Environment Light is basically a skylight with no direction.

As for Environment intensity, I did try that but it has no effect. Eye adaptation is not a factor here, it is fixed at 1. You can completely remove this effect through an unbound global post process volume and setting the Min and Max values of Auto Exposure to 1 and 1 (equal values remove the effect, lower values brighten the entire scene and higher values darken) Remember after each setting change you will need to rebuild lighting.Д®DIT: Also remember that by default the engine uses Eye Adaptation in levels, which causes the darkening of shadows when in brighter, more direct lighting and lightens shadows when in dimmer and less direct lighting. Rendering GDC 2017) Force a rebuild of all shaders by adding a space.

How to rebuild lighting in ue4 update#

You should see the sun moving through the sky, the lighting on your objects should update correctly, and the sky should go through the dawn/day/dusk/night phases. We also cannot apply the base color later because the lighting components cannot. After the rebuild, jump into play or simulate mode. If it is still too dark I would slowly increase the Environment Intensity until the shadows lighten to your needs. Before testing it out, make sure to rebuild the lighting. Usually this setting alone if you are using sky lights and reflection capture actors will be enough to brighten the darker nooks and crannies in a level. If your Environment Color is black change that first to a lighter color (usually a tone of your predominant sky / level color). Open the World Settings and roll out your Lighmass>Lightmass Settings and take a look at your Environment Color and Environment Intensity. You can however tweak some of the lightmass world settings and get a better quality bounce and remove some of the stark blackness I am seeing in your picture. So, a very direct answer to your question is that you cannot directly increase how far the bounce goes.

There are actually a number of things that could help here, but the one thing to keep in mind is that the bounce lighting is based off the actual physics of lighting and the materials you are using in the surface.