RectAreaLight cost for deffered rendering

[drcmda]

you do not need rect area lights, just use an environment map. you can have have 20 million lights in there if you so desire.

and this is the kind of difference it makes:

Live envmaps and getting realistic studio lighting almost for free

Demo: https://lwo219.csb.app Sandbox + code: Building live envmaps - CodeSandbox Basically this allows the env map to be declarative, so that we can compose its contents. Anything in the eco system goes, things can animate in there and so on. I’ve also abstracted pseudo light formers like ring lights or softboxes. All in all this makes it incredibly easy to create good looking scenes with little to no performance overhead or effort.