Ball "jittering out of sight" when moving upwards

[Kirschi94]

Whenever the ball moves too fast upwards, it becomes close to untracable with the human eye. It seems to have something to do with the FPS and building each frame from top to bottom, but I'm not 100% sure.

[k4zmu2a]

That is a known quirk of v1.x.
V2.x does not have this problem.

I don’t know for sure, but I think it is caused be mismatch between screen refresh rate and game FPS (>120).
I did some debugging; this issue does not show up on internal buffers, it is introduced by GDI.
This issue is present in the original, made more apparent by scaled up display.

I am not sure if there is a fix for this.

[Kirschi94]

If it's gone by the next version anyway I think there's no need for a fix. Otherwise being able to turn on an FPS limiter in the options would be an option I guess?

[k4zmu2a]

Unfortunately it is not as simple as limiting FPS.

This game uses a retained render model, each frame only stuff that changed is updated.
This makes it impossible to skip even a single frame.

There is a workaround – discard partial render and update whole screen at desired FPS.
This is what v2 does, as there is no other way with SDL.

I am hesitating to use this workaround because of my wish to keep v1 code authentic to the original.
I will see if it could be added subtly as an option.

[k4zmu2a]

I decided to add the option anyway.
Try it in this pre-release build:
v1.1.2 RC.zip

[Kirschi94]

I feel you with staying true to the original.
Thanks for adding it anyway! I compared it directly with alternative rendering on and off and besides some micro-stutters when it's on it works perfectly! Thank you for your continued efforts!

[k4zmu2a]

Issue resolved with a workaround.