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    [FEATURE REQUEST] divided multi-process engine host

    Idea
    Implement multi-process rendering like a Chromium/Chrome do this for render web pages.
    1 process = 1 UE4 render engine

    How will be work this scheme?


    How its can be integrated into UE4?
    Its will be simple:
    1) update to new version of UE4 core with this features
    2) add special flag one of 2 flags on compilation (1) SUBHOST_APPLICATION - when you want to run your game only as sub-process (not a main, but this NOT affect on Editor or Debug Run) or (2) SUBHOST_OPTIONAL - like 1, but can be running as normal application
    3) compile
    4) profit

    How to integrate in level?
    You need place a control and bind input events (like mouse/keyboard/gamepad) its will be work same as Coherent UI, control surface will be show render from subhost process.

    Why this need to add in core?
    Typical use cases:
    1) load delay free multi level - its mean, you can INSTANT change level when player go to level end - you can load next level in sub-process host and just switch render view from current to next from subhost
    2) split view - well knowed as hot seat for playing 2 ppl on one PC
    3) browser mode - its mean multi-tabbed game interface (for example - spectate 2 or more games)
    4) ...your suggestion here...

    FAQ!
    Q: how todo will be work subprocesses?
    A: you need start subprocess manually

    Q: how to interate with subprocess?
    A: you can use allowed method, but usually its RPC (Remote Procedure Call)

    Q: what if subprocess crash?
    A: that only broke surface associated with this subprocess, main game executable will be continue working

    Thx for read.
    Alex "axiieflex" Volkov.
    Last edited by Alex "axiieflex" Volkov; 08-04-2015, 02:33 PM.
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