When tearing issues arise, the only things that can be done are a step by step breakdown and analysis of the system to see what is causing the tearing. Enough emphasis cannot be put on preventative measures to avoiding tearing. On the other hand, sometimes even setups with identical displays can tear. Sometimes, setups with a handful of different resolutions and refresh rates will work perfectly and won't tear. This brings up a very important issue with tearing: there are no hard and fast rules. Network remote access applications like VNC and LogMeIn have also been the culprits of tearing. The best practice is to use displays that are not only identical in specifications, but are also the exact same model of displays. If there is an installation with two 1080p projectors, and two SXGA+ projectors, there is a chance there will be tearing. If there is an installation with 3 outputs that have a refresh rate of 60hz, and one output with a refresh rate of 59hz, there is a chance there will be tearing. The second is to always ensure that the displays are identical. Most companies will not guarantee tear-free playback on anything but their professional cards. The first is to use a professional graphics card, such as something from the nVidia Quadro series.

Tearing is a complex issue to solve, but there are a few preventative measures that can be taken to avoid it. On slow moving content, this can sometimes be hard to notice, but once there is any sort of motion in the content, tearing becomes incredibly distracting. The result is part of the image being from the previous frame, and part of it being from the next frame. Tearing occurs when a display refreshes its image out of sync with when the graphics card renders its image. Notice the two horizontal cuts across the frame: Is it an example of what a frame with tearing will look like. The image below is an example of a frame that has tearing.Įxamine the image below. Any difference in the signal flow, can cause what is called 'tearing'. The most important rule is to always try to have all display hardware be exactly the same. There has not been much hardware discussion throughout this book, but it is important to keep a few things in mind when working with multiple displays. Outputting Content for Deployment and Performance

Nvidia quadro mosaic edge blending