Yi-Ling Chen yiling-chen

## canvascapture.md

      
        
          
            
              
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                iandanforth
                / canvascapture.md
            
            
              Last active
              October 5, 2022 10:57
            
              
                Capture WebGL frames to disk
              
          
        
      
        
  
      
    How to capture WebGL/Canvas by piping data over a websocket.

This Gist builds on https://gist.github.com/unconed/4370822 from @unconed.
Instead of the original method which writes to the browsers sandboxed filesystem
here we use a websocket connection provided by websocketd to pipe image data
to a short python script that writes out the .png files to disk.
Install websocketd