4.19 Physical Lights

[rosegoldslugs]

@DP Studio

Bugs I’ve encountered while using the physical units, most are a result of the share amount of lux used and the needed support of the old unitless system:
Broken planar reflections due to required lux levels.
Broken local lights due to required exposure levels.
Some gismos and visualisers are not visible due to required exposure levels.
Legacy emissive materials not visible due to required exposure levels.
Although shelved, LPV is blown as well due to required exposure and/or lux levels.
Exponential Hightfog barely rendering, if not at all…

I’m still new to all of this bull-shittery so take wut I say with a grain of salt

I don’t quite follow your reasoning behind using unitless, since as long as Inverse Square Falloff is enabled, the output is identical, it’s just expressed as a different unit… or lack there of for unitless.

Planar Reflections don’t look like they use Pre-Exposure. They work correctly for me in extremely bright scenes with physical units without Pre-Exposure, but get blown out once it’s enabled.

Broken local lights/legacy emissives due to exposure levels - I’m assuming this is saying you can’t see a light because the exposure/relative luminance is too high? Well then that’s to be expected. Take a flashlight outside in the direct sun and tell me if you see it If you want to see emissives at all times, regardless of auto-exposure, then divide your final emissive output by the EyeAdaptation node and it will maintain a consistent luminance.

The Exponential Height Fog issue is identical to the above one. By default, the luminance of the fog is super low, so you need to change the color value to something much higher.