Screen Flicker

R

Rc51dude

Well-known member
Hello guys,

I grabbed Evo from Steam because it was on sale for me around the holidays,
I have an issue that I never noticed before, when I am in the aircraft editor the area highlighted in red flickers like crazy? I thought it was just Evo so I went back into RF 9.5s and its happening there too? Any ideas what is causing this? it makes the editor almost unusable.
During flying everything runs just fine, and it makes no difference if I'm running windowed mode or full screen. Screenshot (2).png
 
Ok I've just noticed something else, it only flickers on nitro planes when I select the engine tab?
This may be why I never really noticed it before as I mostly deal with electric planes, open the motor dropdown on an electric model and the screen stays flicker free? What is going on here?

EDIT: I retract some of that previous observation.
As soon as you input throttle and make the prop spin the flicker begins again, and it is only on the motor or engine dropdown screen that this happens on, all other screens are fine?
 
Last edited:
if one of the read-only properties (power, thrust, rpm) changes the whole window get "redrawn" causing it to disappear and reappear, if it continuously updates it "flickers".
 
legoman said:
if one of the read-only properties (power, thrust, rpm) changes the whole window get "redrawn" causing it to disappear and reappear, if it continuously updates it "flickers".
Click to expand...
Legoman, is there a way to make it not flicker? Is there maybe something I can change in my NVIDIA settings?
 
Hmmm - mine used to flicker, I think back in my RF 8 days on my old pc, also. Just tested with Evo, and no apparent flicker....but wait! There is some! Faint, really, really fast! Looks to be tied to the FPS rate, as Legoman noted. I'm running with a NVidia 4070ti...so upgrading to a top end video card would make it not be apparent.

The real cure by Real Flight, if the work to change "how it graphically works" in designer mode is overwhelming - enable the "K" key to kill the engine when in the Aircraft Designer, just like the flight controls currently work to move wireframe surfaces.....
 
I have a RTX 4080 card and the flickering is evident, (parameters Text screen section for engine) noticeable at idle and all mid engine speeds, flickering stops when full throttle is selected.
Same flickering issue with electric motors, in all mid ranges of prop spinning, but does not happen with zero throttle (electric motor stopped) or full throttle.
As @Flapper mentioned, it would be nice if the "K" kill engine feature worked in the vehicle editor.
 
As a retired software engineer here's a thought on this issue. Normally when you want to stop flicker on the screen your screen update routine waits for the vsync to happen (the screen is blanked during vsync) then updates the screen while it's blanked. But being a real-time simulator, they probably chose not to do that to make things happen quicker so not to interfere with something else that may need to be done. I wouldn't have done it that way because they're in the editor at the time and things shouldn't be time critical then. But none-the-less that might be why it's happening.
 
As noted above, that flickering happens when values are updated. It is most prominent for internal combustion engines because their RPM does not remain steady. It also tends to come up on panes showing current transmitter output values if they are bouncing around a bit.

That flicker is an unfortunate aspect of the MFC dialog controls we are using. It is possible we could reduce or eliminate that by overriding some of that functionality and/or using custom draw behavior, but that's not something we particularly want to get into.

The 'K' key doesn't function in the editor, but you can do what I do and set the fuel level to empty. Toggle fuel level via the Options menu or by pressing the 'F' key if the preview pane has focus. You can use this to evaluate CG shift and weight with a full vs. empty tank. And without fuel, the RPM quickly goes to--and remains at--0. ;)
 
You must log in or register to reply here.
Back
Top