HDR - extra light in dark areas
The correct usage of env_tonemap_controler is described in exactly those tutorials you just wrote about. Try a bit harder there, it works and is beautiful.
A recommendation: only use -hdr for testing maps (otherwise you compile light two times which should be only done for releases as ldr should be supported).
I'm not sure if we talk about the same thing. When I compile I press F9, then go to Expert (advanced), then in Configurations I have a different set of compilation options. That's where I choose the Full compile -both -final (slow!) option.
The other thing I'm wondering about is if the env_tonemap_controller which I've put manually into the map is in conflict with the env_tonemap_controller found in the global_ents instance which I have in my map. Perhaps I need to adress the env_tonemap_controller inside the global_ents instance and not put in any other env_tonemap_controller entity in the map at all. Just a thought. And if so, how do I adress it with I/O's?
Yes! It works, thanks! I think I know the name of the env_tonemap_controller inside the global_ents instance: tonemapper. I'm not good at I/O's for instances but I tried to adress it through @tonemapper but without succes.
And by the way, the trigger seems broken (red) when I adress env_tonemap_controller. But it works. Is this normal?
It should work, yes.
To find out the name of that tonemap controller, just open this global instance VMF and take a look on it.
I also advice to get an idea of how instances work. They are a beautiful invention. You can use them for every little shit and they make map-creating a lot easier in any way.