# ScreenTest

**Repository Path**: joon-lee/screen-test

## Basic Information

- **Project Name**: ScreenTest
- **Description**: 用于屏幕颜色和灰阶的测试。
- **Primary Language**: Unknown
- **License**: GPL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-05-20
- **Last Updated**: 2026-05-22

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Screen test

Test screen color and grayscale functions in Linux system.

### Build
#### 1.meson build
`meson setup build-meson`  
`ninja -C build-meson`  

#### 2.cmake build
`mkdir build && cd build`  
`cmake ../`  
`make`  

#### 3.deb build
`sudo apt build-dep .`  安装编译依赖。  
`dpkg-buildpackage -us -uc` 编译并生成deb包。  

### Command

- display-test-drm        #drm display
- display-test-x11        #x11 display
- display-test-wayland    #wayland display

```
Options:
  -w, --window WxH      Display in a centered resizable window
                         The image scales with the window and keeps aspect ratio
                         Black borders are shown when needed
  -c, --colorbar [DIR]  Display color bars, DIR is horizontal or vertical
                         Default direction is vertical
  -l, --graybar [bar] [DIR]
                         Display grayscale test pattern
                         Default is smooth grayscale gradient
                         Optional 'bar' switches to grayscale bars
                         Default direction is vertical
  -r, --red             Select red
  -g, --green           Select green
  -b, --blue            Select blue
  -p, --pm5544          Display Philips-style test card
  -o, --colorwheel      Display gradient color wheel
  -s, --radial-gradient [circle]
                         Display white-center radial color gradient
                         Optional 'circle' limits the gradient to a circle
  -t, --time SEC        Set switch interval in seconds (default: 1)
                         Only used when two or three colors are selected
  -v, --version         Show version and build time information
  -h, --help            Show this help message and exit

Behavior:
  -c displays a static color bar test pattern.
  -l displays a static grayscale test pattern.
  -l bar displays grayscale bars.
  -p displays a static Philips-style test card.
  -o displays a static gradient color wheel.
  -s displays a white-center radial color gradient.
  One of -r/-g/-b displays a solid color.
  Two or three of -r/-g/-b cycle through the selected colors in argument order.
  -c, -l, -p, -o and -s cannot be combined with -r, -g, or -b.
  -c, -l, -p, -o and -s cannot be combined with each other.
  Without -w the test is shown fullscreen.
```