# HDR-10bpp-Display-Test

> A test to verify HDR 4K display on Linux with 10-bit color depth.

- HTML page: https://antoineboucher.info/CV/blog/projects/hdr-10bpp-display-test/
- Language: en
- Translation (fr): https://antoineboucher.info/CV/blog/fr/projects/hdr-10bpp-display-test/index.md
- Published: 2024-01-01
- Updated: 2024-01-01
- Author: Antoine Boucher (https://antoineboucher.info/CV/index-en.html)## HDR-10bpp-Display-Test

HDR-10bpp-Display-Test checks HDR 4K display on Linux, including 10 bits per channel. Useful for validating the graphics stack, drivers, and monitor.

### Getting Started

[HDR-10bpp-Display-Test](https://github.com/antoinebou12/hdr-10bpp-display-test): A test project for HDR 4K display on Linux.

#### Prerequisites

Before running the test, ensure your system has the following software installed:

- X server
- Python 3
- GTK 3
- ImageJ (for 10-bit color depth image display)
- ImageIO (for reading image files)

On Ubuntu or Debian-based systems, install these packages using the command:

```bash
sudo apt-get install xserver-xorg python3 python3-gi python3-gi-cairo gir1.2-gtk-3.0 imagej
```

#### Installing

ImageIO is a necessary component and can be installed via pip:

```bash
pip3 install imageio
```

#### Running the Test

To conduct the test, follow these steps:

1. Clone the repository:
   ```bash
   git clone https://github.com/yourusername/HDR-10bpp-Display-Test.git
   ```

2. Navigate to the project directory:
   ```bash
   cd HDR-10bpp-Display-Test
   ```

3. Stop the display manager and X server:
   ```bash
   sudo systemctl stop lightdm || sudo systemctl stop gdm
   sudo pkill Xorg
   ```

4. Start the X server with a color depth of 30:
   ```bash
   startx -- -depth 30
   ```

5. Verify the X server's color depth:
   ```bash
   xwininfo -root | grep Depth
   ```

6. Launch the viewer application:
   ```bash
   python3 Viewer.py
   python3 Viewer3.py # for video support
   ```

7. To display an image, use:
   ```bash
   imagej --no-splash /path/to/image
   ```

   Check if the image is displayed correctly with accurate colors.

### Troubleshooting

If the X server fails to start with a color depth of 30, attempt to start it with a depth of 24 instead:

```bash
startx -- -depth 24
```

### License

This project is licensed under the MIT License - see the LICENSE.md file for details.