Question Why the bouncing ball in motion is looks like blur, multiple image, ghost effect,motion blur, jiter

Help me to fix the issue,
Normally when ball moves with a speed then it creates multiple shaking images, like jittering or ghost effect.
Is it possible only one image at a time with high or medium velocity of the ball?
I am sharing video link :

 

I don't see anything in your video and it's hard to be completely sure what you are observing since you mentioned a bunch of words each of which in the context of game graphics has very specific but different meaning.

Does the result differ if you take a photo using a phone compared to making screenshot. If you don't see the problem in screenshot then the issue isn't in software but your monitor there almost is nothing Unity can do about it. The effect will be less obvious if ball moves slower or has less contrast compared to background.

You can sometimes slightly tweak this in your monitor configuration but there is only so much you can do with that. There are reasons why some monitors are 10x more expensive than others. But just because something is more expensive doesn't mean it's better for your specific usecase. Monitors optimized for gaming have completely different priorities than those optimized for content creation or consumption.

 

Yes, I have checked with different monitor with different Refresh Rate upto 144Hz, Physics Interpolation is ON, The ball has a physics material whose bounciness is 1.18 and friction is 0
Gravity 1, Linear drag 0, Angular Drag 0, Collision Detection Continuous, Fixed Time Step is 0.02(Also Tried to increase it but not fixed the issue), Note that When ball spawns a initial force is applied to right direction through AdForce Method.

//This below method is in another script executes when Spawn Ball button is pressed.
public void SpawnBall(Side inSpawnSide = Side.Center)
{
// _defaultForce = Random.Range(10, 25);
if (_ball != null)
{
Destroy(_ball.gameObject);
_ball = null;
}
Transform finalPosition = _ground.GetBallSpawnPoint(inSpawnSide);
if (finalPosition != null)
{
GameObject ballGO = Instantiate(ballPrefab, _ground.transform);
if (ballGO != null)
{
_ball = ballGO.GetComponent<Ball>();
}
if (_ball == null)
{
Debug.LogError("Something went very wrong. Cannot spawn ball");
return;
}
_ball.gameObject.SetActive(false);
_ball.SetBallAtSpawn(finalPosition);
_ball.gameObject.SetActive(true);
Rigidbody2D _ballRB = _ball.GetComponent<Rigidbody2D>();
_ballRB.AddForce(Vector2.right * gameConfigData.ballInitialForce, ForceMode2D.Impulse);
//_ballRB.velocity = (Vector2.right * gameConfigData.ballInitialForce);
}
else
{
Debug.LogError("Something went very wrong. Cannot spawn ball");
}
}



using Assets.Scripts.Menu.UIScreen;
using GameEvents;
using System;
using UnityEngine;
public class Ball : MonoBehaviour
{
private Rigidbody2D _ballRB;
private PhysicsMaterial2D _physicsMaterial;
private Vector2 _lastVelocity;
private bool _isMovingUpAndDown = false;
private float _upDownTimeThreshold = 3f;
private float _currentUpDownTime = 0f;
private float _captureVelocity;
private float _captureTime;
private float angle;
private void OnEnable()
{
EventMessenger.Instance.AddListener<LeverData>(OnLeverDataChanged);
}
private void OnDisable()
{
EventMessenger.Instance.RemoveListener<LeverData>(OnLeverDataChanged);
}
private void Start()
{
_ballRB = GetComponent<Rigidbody2D>();
ApplyProperties();
}
private void FixedUpdate()
{
ControllBallSpeed();
_lastVelocity = _ballRB.velocity;
EventMessenger.Instance.Raise(new VelocityChanged(_ballRB.velocity.magnitude));
_currentUpDownTime += Time.fixedDeltaTime;
}
private void ControllBallSpeed()
{
if (_ballRB.velocity.magnitude > GameRunner.instance.gameConfigData.ballMaxVelocity)
{
_ballRB.velocity = _ballRB.velocity.normalized * GameRunner.instance.gameConfigData.ballMaxVelocity;
}
}
private void ApplyProperties()
{
if (_ballRB != null)
{
_ballRB.drag = GameRunner.instance.gameConfigData.ballLinearDrag;
_physicsMaterial = new PhysicsMaterial2D();
_physicsMaterial.friction = GameRunner.instance.gameConfigData.ballFriction;
_physicsMaterial.bounciness = GameRunner.instance.gameConfigData.ballBounciness;
_ballRB.sharedMaterial = _physicsMaterial;
}
}
public void SetBallAtSpawn(Transform inTransform)
{
this.transform.position = inTransform.position;
}
private void OnCollisionEnter2D(Collision2D collision)
{
Vector2 surfaceNormal = collision.contacts[0].normal;
Vector2 incomingDirection = _lastVelocity.normalized;
Vector2 reflectedDirection = Vector2.Reflect(incomingDirection, surfaceNormal);
angle = Vector2.SignedAngle(incomingDirection, reflectedDirection);
Debug.Log("Angle: " + angle);
_lastVelocity = _ballRB.velocity;
if (angle < -150f && collision.gameObject.TryGetComponent<Boundaries>(out Boundaries wall) && wall.position == GameEnums.Side.Bottom)
{
_isMovingUpAndDown = true;
CaptureBallVelocityAndTime();
// Destroy(gameObject);

}
}
private void CaptureBallVelocityAndTime()
{
_captureVelocity = _ballRB.velocity.magnitude;
_captureTime = _currentUpDownTime;
int totalSeconds = Mathf.FloorToInt(_captureTime);
int hours = totalSeconds / 3600;
int minutes = (totalSeconds % 3600) / 60;
int seconds = totalSeconds % 60;
EventMessenger.Instance.Raise(new ResultData(hours, minutes, seconds, _captureVelocity));
//UIControllerManager.Instance.PushController(nameof(ResultScreen));
}
private void OnLeverDataChanged(LeverData lData)
{
ApplyProperties();
}
}

 

Yes, I have tried with simple Rigidbody2D and collider and let it bounce up/down without all this script but when ball's speed increase after a time due to multiple bounciness then ball body is become blurry and jittering

 

There's not a single frame in that video with blur or ghosting. I guess you're just seeing the effects of how LCD panels work.

 

Code (CSharp):

1. using System.Collections;
2. using UnityEngine;
3.  
4. namespace Assets.Script
5. {
6.     public class CustomBouncyBall : MonoBehaviour
7.     {
8.         [SerializeField, Range(0f, 50f)] private float bounciness = 0.8f;
9.         [SerializeField, Range(0f, 50f)] private float initialForce = 15f;
10.         private Vector2 initialVelocity;
11.  
12.         private Rigidbody2D rb;
13.         private void Start()
14.         {
15.             rb = GetComponent<Rigidbody2D>();
16.             rb.AddForce(Vector2.right * initialForce, ForceMode2D.Impulse);
17.  
18.          
19.         }
20.     }
21. }

 

I have multiple Devices with High Graphics with 144Hz but still same issue

 

Yes Interpolation is On, But still same issue

 

Maybe you're not expressing what you're seeing correctly, but Unity is not adding any blue or doubling the ball in any frame of your video. See this:
UFO Test: Ghosting (testufo.com)

 

Then why this is happening in My project also, I am still confused.

 

I have tested with multiple ways but when ball moves ball become blurry, creates motion blur. Is there any way to remove motion blur ?

 

Do you see any blur in the link I posted before? There's zero blur in your video, so without knowing anything about your experience I can only assume you're seeing normal LCD blur (which exists even in 144hz monitors).

 

Is your monitory, by any chance, a Samsung?

 

If you see the blur on Youtube , you can pause and go(slowly) frame by frame using this 2 keys :
<, or .>
If you do that you will see without any doubt that there is no blur on let's say "the generated image".
You can do the same on Unity Editor on play mode, there is a next frame button you can click over and over and as long as you are not clicking insanely crazy fast , the monitor will have enough time to "refresh the image" correctly and you will not see any blur.
Sadly its the way current monitors work , maybe some people have better monitors and the blur its a lot less noticeable or maybe some people are used to it after years of using this monitors and just cant see it , but in any case, its the monitor.

 

No, Dell

 

press print screen on a frame with blur and go in paint and zoom it, then post your result

if you cant find the blur in a print screen then its a monitor problem