This is a live-coding tool, where you can write a 2D fragment/pixel shader while it is running in the background.

The tool was originally conceived and implemented after the Revision 2014 demoscene party's live coding competition where two contestants improv-code an effect in 25 minutes head-to-head: https://www.youtube.com/watch?v=-5P9rRUXaR0

• F2: toggle texture preview
• F5 or Ctrl-R: recompile shader
• F11: hide shader overlay
• Alt-F4: exbobolate your planet

Create a config.json with e.g. the following contents: (all fields are optional)

{
  "font":{
    "file":"Input-Regular_(InputMono-Medium).ttf",
    "size":16,
  },
  "rendering":{
    "fftSmoothFactor": 0.9, // 0.0 means there's no smoothing at all, 1.0 means the FFT is completely smoothed flat
  },
  "textures":{ /* the keys below will become the shader variable names */
    "texChecker":"textures/checker.png",
    "texNoise":"textures/noise.png",
    "texTex1":"textures/tex1.jpg",
  },
  "gui":{
    "outputHeight": 200,
    "opacity": 192, // 255 means the editor occludes the effect completely, 0 means the editor is fully transparent
    "texturePreviewWidth": 64,
    "spacesForTabs": false,
    "tabSize": 8,
    "visibleWhitespace": true,
  },
  "midi":{ /* the keys below will become the shader variable names, the values are the CC numbers */
    "fMidiKnob": 16, /* e.g. this would be CC#16, i.e. by default the leftmost knob on a nanoKONTROL 2 */
  },
  /* this section is if you want to enable NDI streaming; otherwise just ignore it */
  "ndi":{
    "enabled": true,
    "connectionString": "<ndi_product something=\"123\"/>", /* metadata sent to the receiver; completely optional */
    "identifier": "hello!", /* additional string to the device name; helps source discovery/identification in the receiver if there are multiple sources on the network */
    "frameRate": 60.0, /* frames per second */
    "progressive": true, /* progressive or interleaved? */
  }
}

As you can see you're gonna need CMAKE for this, but don't worry, a lot of it is automated at this point.

• On Windows, use at least Visual C++ 2010, or 2013 if your 2010 install doesn't have MFC. For the DX9/DX11 builds, obviously you'll be needing a DirectX SDK, though a lot of it is already in the Windows 8.1 SDK as well.
• On Linux, you'll need xorg-dev; after that cmake should take care of the rest.
• On OSX, cmake should take care of everything.

• "ScintillaGL" project by Mykhailo Parfeniuk (https://github.com/sopyer/ScintillaGL)
• Riverwash LiveCoding Tool by Michał Staniszewski and Michal Szymczyk (http://www.plastic-demo.org/)

• Scintilla editing component by the Scintilla Dev Team (http://www.scintilla.org/)
• OpenGL Extension Wrangler Library by Nigel Stewart (http://glew.sourceforge.net/)
• BASS.DLL by Ian Luck (http://www.un4seen.com/)
• STB Image and Truetype libraries by Sean Barrett (http://nothings.org/)
• GLFW by whoever made GLFW (http://www.glfw.org/faq.html)
• JSON++ by Hong Jiang (https://github.com/hjiang/jsonxx)
• NDI(tm) SDK by NewTek(tm) (http://www.newtek.com/ndi.html)

These software are available under their respective licenses.

The remainder of this project code was (mostly, I guess) written by Gargaj / Conspiracy and is public domain.

If you have anything to say, do it at http://www.pouet.net/topic.php?which=9881 or