Messages

1

Graphics / Re: Fullscreen artifacts

« on: April 16, 2020, 11:08:09 am »

  I think I became a bit smarter now. Thank you so much!

2

Graphics / Re: Fullscreen artifacts

« on: April 16, 2020, 10:07:45 am »

I did, I really did About GPU and Monitor refresh rate being out of sync.
Different approaches to fix that etc.

What I meant behind the "reason" - why I am seeing this in fullscreen only.

3

Graphics / Re: Fullscreen artifacts

« on: April 16, 2020, 08:32:10 am »

Thank you for the answer. Does that mean, I should stop trying to find the reason and rely totally on VSync?

4

Graphics / [SOLVED] Fullscreen artifacts

« on: April 15, 2020, 11:03:02 pm »

Hello everyone.

Sorry if failed to find a solution in the topics, I did try the search.
For the past 3 days I've been trying to find a reason for an issue I've been facing when running project in fullscreen mode.

I've tried to make a video and a screenshot, but for whatever reason that does not capture the artifacts, so I will try to explain that + add a screenshot with a small drawing.

Using .net SFML

I reduced everything in the project to have a sprite and a view for movement.
View is getting updated every frame and under certain conditions I move the view to have the effect of scrolling the world.

Whenever I set the fullscreen style:

_window = new RenderWindow(VideoMode.DesktopMode, "", Styles.Fullscreen);

I get strange behavior as if I see the previos frame buffer (kinda tried to draw that on screenshot)
What bothers me is that happens ONLY in fullscreen and I can not understand the reason behind that.

So I try to limit the framerate like this - update and render ~60 times a second:

private float _timePerFrame = 1.0f / 60.0f;
 
......................

 while(_window.IsOpen)
      {
        _timeSinceLastUpdate += clock.Restart().AsSeconds();
        if (_timeSinceLastUpdate > _timePerFrame)
        {
          _timeSinceLastUpdate -= _timePerFrame;
          _window.DispatchEvents();
          Update(_timePerFrame);
          Render();
        }
      }


Now setting VSync makes the problem dissapear, but I would still like to understand why this happens.
My monitors refresh rate is 60 (well 59 by looking into display settings).

Any ideas are very appreciated.