Re: Problem gettting a smooth continous background scroll (SDL2)

It's going to be hard to make it completely smooth without vSync. Sometimes
you will see the same image for 2 screen refresh, and sometimes you will
call to render two times on the same screen refresh. Since there is no
synchronization that is the best you can reach without it. Also sometimes
you will see part of the render moved in horizontal because the game is
rendering in the middle of the screen refresh. The odds of not using
vSync....

Good luck with it.

2016-08-21 20:39 GMT+02:00 exerion <[email protected]>:

> Yes, chaging the value from 33 to 16 smoothens the transition a lot, but I
> still see the problem.
> And in the moment I change the speed (faster), is more evident. It's too
> noticeable.
>
> I know not using V-sync imposes some visual limitations, aka, it's quite
> hard to achieve a smooth scroll in the same way v-sync is enabled. Is it so
> hard to have a smooth scroll without v-sync? looks so.
>
> Basicaly the image looks like shaking or jumping, not sure how to explain.
> The effect is more evident when I replaced the original images with a
> chess-pattern as I read in a forum, that helps to detect problems with
> moving images.
>
> I'll continue working on it.
>
> Btw I appreciate a lot all of your suggestions [image: Very Happy].
>
>
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