Simple demo how to use High Dynamic Range (HDR) in a 2D game, via the WorldEnvironment node.
Just slide the cave image left and right to observe the HDR effect at work.
Language: GDScript
Renderer: GLES 3 (HDR is not available in GLES 2)
Check out this demo on the asset library: https://godotengine.org/asset-library/asset/110