3 ms·
Pardon my ignorance (I'm not a game developer). I was surprised to find vertical blanking interval mentioned in the article as CRTs haven't been a common sight
by h3mb3 5y ago
Pardon my ignorance (I'm not a game developer).
I was surprised to find vertical blanking interval mentioned in the article as CRTs haven't been a common sight for years. Is it still a relevant concept when writing code for modern GPUs?
- tuyiown 5y agoI suspect it's just the name that stuck for the double/triple buffer for signal synch'ing and avoid tearing.
- pjc50 5y agoHDMI still has both vertical and horizontal "blanking", although efforts are under way to reduce it: https://blogs.synopsys.com/vip-central/2021/06/24/reduced-blanking-the-way-to-low-power-high-resolution-displays/ https://blogs.synopsys.com/vip-central/2021/06/24/reduced-bl... In any case, you want to know when the frame has been scanned out so you can swap the buffer to the next frame.
- theandrewbailey 5y agoTo the video hardware, LCDs are raster displays, and receive information in line scans and frames over time just like CRTs, even if it's a digital signal. You can have V-sync on or off (complete with screen tearing) just the same.