how does envmap work?

i looked at all the tutorials, like this:
and iv even looked at examples, is there a video tutorial?

bump: plz help

bump: plz help

blender game engine doesent use envmap! this is only on render!
game engine has Sec Map , NormalMap, and there is others…but not envmap!


u can fake the environment mapping with a HDRI and set it to ref in map input activate CSP
col .5 this would work but hell WE NEED real Sphere Mapping support for the game engine :))) bring this on the todo list…

used it on my scene