How make an UI / game layout something like this?

[Manatee]

@Axtel Sturnclaw;386019

For what you want to achieve, you are going to need to dive into the engine source. To read the source, just open a filesystem browser to your UE4 install directory and open the [YourVersionHere]/Source/ folder. If you want to modify the engine, you will need to compile it yourself. If you go to UE’s github page, it has instructions for how to compile the engine from source.

As far as usage goes, I would say 99.99% of games in Unreal’s primary market (AAA games, etc…) will be rendering to the entire window, so it may have been seen as a waste(or not even considered at all) to create a system to allow the user to pick-and-choose what part of the window they want to render to. Such efforts might be better spent on UMG, for example. And the games you are showing are using custom engines(I think) anyway. So that’s my rationale for why the engine doesn’t support rendering to a specific portion of the game window out-of-the-box.

Yes. I understand what you are saying. Yet, at the same time it would still be simple task as well to have the option.
At the moment, you can adjust the aspect ratio of the camera, and setting it to lower values will stop the rendering from the area outside camera view.
Set the aspect ratio from 1.777 to 2.35 and you will see framerate increase. Having the same setting to reduce horizontal length would also give a framerate increase.
You can currently also can put UI layouts on the black areas outside viewport rendering, doing exactly what I want without expensive cost.
Having an offset to the abovedone settings to set the position to whatever area on the screen would not be complicated… except for me, as it requires source coding :P.

Edit: as for the 99.99% part you said, I very strongly disagree. Thats an attitude that only makes 99.99% of all games 99.99% similar generic mass! And by giving UE4 first for 20$ and then for free, shows that Epic is not only interested in AAA markets, but wants their excellent engine to be used for all sorts of creations and creators.