Screen tearing

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Exemplary tearing effects in one picture

Screen tearing (short- tearing , of Engl . To tear , rip '), to German about frame-tearing is an undesirable effect (called an " artifact ") when viewing moving images on a screen . The effect can occur both when playing videos and when playing computer games .

This effect can occur if the structure and display of the individual images are not synchronized with the monitor display. The viewer then possibly sees several parts of successive individual images at the same time, which makes them appear torn. This can be remedied, for example, by writing the individual images alternately into two memory areas, of which only one is visible at a time. These memory areas are then switched synchronously with the refresh rate of the monitor (usually 60 Hz) during vertical synchronization , which makes the image change "invisible". This principle works in the same way with 30 or 15 Hz, with the monitor displaying each image for a correspondingly longer period. Depending on the structure of the monitor panel, vertical or horizontal tearing or both can occur at the same time.

solutions

One possible solution is the V-Sync (vertical synchronization) option in the graphics card settings . Here the individual images to be drawn are throttled so that they are synchronized with the number of image repetitions on the monitor.

A newer solution is a variable display rate of the monitor, which is continuously adapted to the duration of the image creation. This allows the image to be viewed immediately when it is ready. At AMD this technology is called "FreeSync", at Nvidia " G-Sync ".

See also

Individual evidence

  1. ↑ Niklas Kolorz: Quick and Easy: Screen Tearing and V-Sync. In: giga.de. May 5, 2015, accessed March 18, 2018 .
  2. ↑ VirtualDub.org: How to fight tearing ( Memento from May 30, 2015 in the Internet Archive ), October 31, 2005.
  3. ↑ Alex Wawro: Geek 101: What Is V-Sync? In: pcworld.com. June 14, 2011, accessed March 18, 2018 .
  4. ^ What is Screen Tearing, and What Do You Do About It? In: pcunleashed.com. March 6, 2016, accessed March 18, 2018 .