In 4.11 I’ve noticed this problem coming up only when using PIE mode. Standalone game seems to not have this problem. The problem is a bit hard to describe, and it does show up on the default post process settings, but what I noticed is that changing the screen percentage actually makes it worse. For example:
Screen percentage 100 (default/untouched):
Screen percentage 150:
Screen percentage 200:
Hello Daniel.Wenograd,
All of your screenshots are of different areas within your project, so it is hard to determine how aggressive the issue is when you scale up the screen percentage.
However, this issue is directly related to the ‘Bloom’ setting within your post processing settings, as well as the ‘Auto-Exposure’ setting. Take a look at our documentation on both of these post processing effects to get an understanding of how they work and how to dial them back so they aren’t overbearing.
Let me know if you have further questions.
Cheers,
So I went in and completely disabled auto exposure and bloom 100% and took some new screenshots. Here are the results:
Screen percentage 100: (Note on the far left and top of the screen the artifacting is still there)
150%
200%
After shooting the gun. You can see the permanent ghosting of the animation or any object on the entire screen moving if I move my mouse left behind. In any other game engine, it’s reminiscent of noclipping outside the bounds of the map and seeing the kind of artifacting that happens when there’s absolutely nothing out in the void to render.
There is a known issue with Screen Percentage causing some visual artifacts when you upsample the scene (UE-19394).
I did some testing and definitely found a performance hit when you increase the Screen Percentage, but this is expected since you are super sampling your entire scene (slower, but higher quality).
Thank you,
Maybe I wasn’t communicating my problem properly. This is a problem that occurs even when screen percentage is disabled, and only gets exaggerate when it’s increased. Even at the default, untouched settings, the artifacting still occurs on the left and top of the screen and this problem only occurs in the Play In Editor mode. The standalone game and builds have no issue with this, it’s just a problem with the in-editor game.
Could you provide me with your ‘dxdiag’ so I can take a look at your system specs?
I get the same problem where i get artifacts along the top and left edge of the screen, i haven’t been using screen percentage at all, in my case this only seems to occur if a widget blueprint has been added to the screen, does this occur for you as well?
EDIT: Just tried increasing screen percentage and yeah very similar results to yours
Could either of you provide me with some simple steps to reproduce this issue on my end?
Thanks,
For me it is as simple as
open the engine content
Template_Default level
add a widget blueprint with
something in it to the screen (a
text block is enough) via the level
blueprint
hit PIE and go fullscreen, use the
mouse to look around a bit pausing
now and then and you will notice
bloomy artifacts along the top and
left edge of the screen.
*note - Adding a post process volume
with any increase in screen
percentage causes the same effect on
the right and lower side of the
screen to the area of percentage increased
Andrew, this issue occurs for me in 4.11. With any UMG widget on the viewport walk past a bright light or spot light while moving the camera quickly. The last few frames end up frozen along the left and top borders. Calling RemoveAllWidgetsFromViewport in my blueprint immediately clears the artifacting. However it will reappear shortly after adding another widget. I’ve also tested this with AA and motion blur disabled and still produced the same result. I’m not up sampling the scene unless that is a default setting in 4.11.
Nvidia GTX960 Intel core i5 8gb Ram
Here is the forum thread as well.
Hey all,
I appreciate you providing some steps so I can reproduce this issue on my end. I was able to get the artifacts to appear and went ahead and entered a bug for the issue (UE-29144). Once the issue has been fixed, it will be integrated into an upcoming hotfix or full engine release.
Since this issue seems to be affecting a good bit of users, either myself or another team mate will return with the update once it has been fixed and integrated. If you have any further questions or need additional assistance, please do not hesitate to ask!
Cheers,
Actually, it just occurred to me. Isn’t PIE always using screen percentage since we have to scale the game window to the editor viewport, even in full screen mode? So that actually could be the issue.
+1 that I also get this issue. For me it was immediately adopted with version 11. I never had the issue in prior versions.
Thanks
