Question by serenefox · May 17, 2014 at 04:50 PM · material uv offset scrolling jitter

Getting rid of Scrolling Uv Jitters

Hello,

I have a plane in the background of my game and I have a script for material offset attached to it. It works great but the jitter gives me a headache and I am sure that's not good for people playing it as well. Its just a slight jitter but it is noticeable enough. I was wondering if anyone had any answers as to why this is happening. I tried using deltaTime instead of Time.time but the background just jumps then doesn't move. I also tried setting a consistent frame rate but none of this changed it.

Here is the code I have:

 using UnityEngine;
 using System.Collections;
 
 public class BackGroundScroll : MonoBehaviour {
     
     public static float BGscrollSpeed = -0.5f;
     
     void Update () 
     {
         renderer.material.mainTextureOffset = new Vector2 (0, (Time.time * BGscrollSpeed % 1));
     }
 }

Thanks for the help in advance!

Add comment · Show 5

serenefox · May 18, 2014 at 09:36 PM 0

But i need it to endlessly scroll, and that keeps the UVs in the 0-1 range.

Eric5h5 · May 19, 2014 at 04:22 AM 0

Don't remove the modulo. There's nothing in that script that would cause any jitters.

serenefox · May 19, 2014 at 06:30 AM 0

Thanks Eric and I was afraid of that haha, ok I will have to look into another area then. It's just when the background moves up the screen its almost like it is flashing slightly around some of the clouds I have on the plane(BG) and i don't want anyone to have a seizure or something.

AlucardJay · May 19, 2014 at 09:45 AM 0

removed comment. Couldn't see anything that would cause jitter so suggested that. Jitter is probably caused because of fast scrolling speed.

serenefox · May 19, 2014 at 07:11 PM 0

Thats what I started thinking but it does need to move at that speed because any slower it just doesn't look right. Thanks for your responses. I might just have to submit the game as is to apple and see if it gets rejected for that. I haven't had anyone complain about it but i haven't had many testers either. I might just be over thinking it.

Getting rid of Scrolling Uv Jitters

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