# \[BUG\] Splitscreen with 3 players doesn't work **URL:** \ **Category:** Rendering\ **Tags:** unreal-engine, local-multiplayer, splitscreen, bug-report, Rendering, question\ **Created:** [April 24, 2015, 8:03pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303 "2015-04-24T20:03:31Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![nafonso](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@nafonso](https://forums.unrealengine.com/u/nafonso)\ **Post date:** [April 24, 2015, 8:03pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/1 "2015-04-24T20:03:31Z")
**Version:** 4.7.6 **Platform:** Win & Mac **Description:** When you launch a game with 3 players in split screen, it will show a black screen. 1, 2, or 4 works fine. **Repro Steps:** - Open this repro project - It should open Start map, but if not open it - Hit play, notice how it loads a game with 4 players - Stop it, and open the Start level blueprint - Change the numPlayers variable to 3, compile - Hit play, notice how it loads a black screen - Stop, and change the number of players to 2 or 4 and it will work normally, only 3 is broken. You can’t really notice there, but when launching the game in 3 player split screen only the UMG widgets will show up, the game is running in the background, just nothing is being shown. Regards, Nuno Afonso ---
**Author:** ![Reisn7CC](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Reisn7CC](https://forums.unrealengine.com/u/Reisn7CC)\ **Post date:** [April 27, 2015, 3:50pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/2 "2015-04-27T15:50:20Z")
I have the same problem. Kinda strange that nobody else is reporting this because there even is a “Three Player Splitscreen Layout” option in the project preferences. ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [April 27, 2015, 4:31pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/3 "2015-04-27T16:31:33Z")
Hi Nafonso, This has already been reported and a ticket has been submitted for this with UE-9825. I’ve added your post here to the ticket. Once there is an update we will post any updates. Thank you! Tim ---
**Author:** ![Reisn7CC](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Reisn7CC](https://forums.unrealengine.com/u/Reisn7CC)\ **Post date:** [April 27, 2015, 5:23pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/4 "2015-04-27T17:23:46Z")
Apparently I was wrong. ---
**Author:** ![Greg\_Granato](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Greg\_Granato](https://forums.unrealengine.com/u/Greg_Granato)\ **Post date:** [August 18, 2015, 5:42pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/5 "2015-08-18T17:42:39Z")
Is there an update on this issue? I noticed that when this black screen happened I could, running in standalone, re-size the window and for some sizes the window would render properly. More specifically, I tested re-sizing the screen width and height independently and found that re-sizing the width would effect the rendering while re-sizing the height did not. I thought maybe this information would help isolate the problem. ---
**Author:** ![Tim\_Hobson](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Tim\_Hobson](https://forums.unrealengine.com/u/Tim_Hobson)\ **Post date:** [August 18, 2015, 8:37pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/6 "2015-08-18T20:37:48Z")
That issue is still backlogged. Unfortunately, there is no time frame for when this will be addressed. I have added your interest in seeing this resolved to the ticket. Thank you! Tim ---
**Author:** ![anonymous\_user\_4235cc8e](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_4235cc8e](https://forums.unrealengine.com/u/anonymous_user_4235cc8e)\ **Post date:** [November 16, 2015, 5:43pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/7 "2015-11-16T17:43:58Z")
I found a work-around in GameViewportClient.cpp that avoids the blackscreen problem. This is not a proper fix of course, but I think it should help Epic in identifying and fixing the real problem. It appears that when the screen goes black, the calculated value for TotalArea is never equal to (MaxX-MinX)_(MaxY-MinY). When the screen does render properly then TotalArea is always equal to (MaxX-MinX)_(MaxY-MinY). This is around line 1191 in the 4.10 engine source. When I took out the condition from the “if” statement below, then the window would always render properly (no more black screen) regardless of the resolution used. I’m guessing there is a problem with rounding or truncation during the calculation of TotalArea which only shows for some resolutions. Here is my change (around line 1191 of GameViewportClient.cpp): ``` // If the views don't cover the entire bounding rectangle, clear the entire buffer. //if ( ViewFamily.Views.Num() == 0 || TotalArea != (MaxX-MinX)*(MaxY-MinY) || bDisableWorldRendering ) if (ViewFamily.Views.Num() == 0 || bDisableWorldRendering) { SceneCanvas->DrawTile(0,0,InViewport->GetSizeXY().X,InViewport->GetSizeXY().Y,0.0f,0.0f,1.0f,1.f,FLinearColor::Black,NULL,false); } ``` I hope this information proves useful. ---
**Author:** ![anonymous\_user\_416b781b](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_416b781b](https://forums.unrealengine.com/u/anonymous_user_416b781b)\ **Post date:** [November 18, 2015, 9:01pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/8 "2015-11-18T21:01:26Z")
Your awesome wjhcc! You should make a pull request. ---
**Author:** ![paradoc](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@paradoc](https://forums.unrealengine.com/u/paradoc)\ **Post date:** [March 9, 2016, 2:21am UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/9 "2016-03-09T02:21:38Z")
ran across this bug in 4.10.4, however works ok when game is played in new window. when a 3 player local game is played in selected viewport, the bug described above persists. i didn’t try recompiling the source, as my engine download is from the launcher, so not sure if that code change fixes things. ---
**Author:** ![PeterLantz](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@PeterLantz](https://forums.unrealengine.com/u/PeterLantz)\ **Post date:** [May 30, 2016, 4:48pm UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/10 "2016-05-30T16:48:40Z")
Hopefully this helps anyone, 3 player splitscreen is black in PIE, but works fine when the game is built in my version. ---
**Author:** ![shadowkami](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@shadowkami](https://forums.unrealengine.com/u/shadowkami)\ **Post date:** [September 7, 2017, 3:10am UTC](https://forums.unrealengine.com/t/bug-splitscreen-with-3-players-doesnt-work/316303/11 "2017-09-07T03:10:31Z")
I can’t run with 3 player,but I delected the ReflectPlane,it’s ok.Any bug with local multiplayer and ReflectPlane?