https://github.com/10maurycy10/vsync

A simple vsync test (rust sdl2)
https://github.com/10maurycy10/vsync

Last synced: 11 days ago
JSON representation

A simple vsync test (rust sdl2)

• Host: GitHub
• URL: https://github.com/10maurycy10/vsync
• Owner: 10maurycy10
• License: unlicense
• Created: 2021-09-27T21:19:24.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-09-28T00:27:19.000Z (over 3 years ago)
• Last Synced: 2024-11-20T21:58:48.101Z (2 months ago)
• Language: Rust
• Size: 7.81 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# vsync

A simple vsync tester.

## how it works

this program alternates frames several colors that should combine into gray. 

see https://en.wikipedia.org/wiki/Persistence_of_vision and https://en.wikipedia.org/wiki/Additive_color

## cycle size

the cycle size can be specifyed with the ``-f`` option:

```

    cargo run -- -f 3

```

2 frame : alternates #FF0000 and #00FFFF this should result in a gray window. (more relable, default)

3 frame: alternates #FF0000, #00FF00 ,and #00FFFF this should result in a gray window. (double frame drops)

## reqest vsync

by default the program will reqest vsync with ``present_vsync()``.

this can be disabled with `` -n ``

## results

colorfull stripes:                  your system is horibly misconfigured (have you passed ``-n``)

solid gray:                         pass, you have vsync

solid gray, with color flashes:     fail or you have, you have frame drops