Text and some pictures are one pixelish off

[pbullion]

The bigger the font and full size pics are coming out like in this video where the top half is a pixel or two off and is kind of split.

This happen to anyone else? Or happens to know the root problem and or a fix?

Thanks!

https://user-images.githubusercontent.com/20978249/210891739-78c907c2-28a2-4bd5-9a0b-27f09fd3b471.MOV

[hzeller]

This looks a little bit like tearing. How do you output the text ? Are you using the text-scroller utility or wrote it yourself ? If the latter, are you using the frame-canvas and SwapOnVSync() ?

[pbullion]

Its using python bindings and yes the createframecanvas and the swaponvsync

[hzeller]

Do you see the same thing when the text is not scrolling ? Are you using bdf fonts with the DrawText() function or try to render it from some ttf with some other font renderer (which usually works badly for low resolution).

[pbullion]

im using the bdf fonts and drawtext(). not sure if this helps take a look

[anandrajgupta]

FRC length might be causing this delay in top half and bottom half

[hzeller]

Something unrelated to the font issue: make sure to not create frame canvases in the loop. The offscreen_canvas = CreateFrameCanvas() line should be before the while True:. Otherwise you run out of memory soon.

[hzeller]

Also, the whole font-loading is probably also not something you want to do in every loop, but move it to the front,

[pbullion]

So i went back and just ran the straight runtext.py in the samples folder. still getting the same thing

https://user-images.githubusercontent.com/20978249/211073605-59b15d73-e0ac-4aa5-9b9b-86f7ca1bde95.MOV

https://user-images.githubusercontent.com/20978249/211074227-90a61b46-839a-49fd-b7a4-c0786ecbac13.mov

[pbullion]

@hzeller any idea on this? just running the runtext.py example straight from you is still showing the pixels off in the middle