OpenGL Shader Node Editor

This is an OpenGL shader node editor based on Dear ImGui and ImNodes, which deals with GLSL shaders, including dynamic creation, linking, uniforms setting, and buffers binding in runtime via GUI operations. Basically it covers most of the C++ OpenGL client coding throughout the rendering pipeline.

• Programs

  
  A program can link multiple shaders for a rendering pipeline.

• Framebuffers

  

• Textures

  
  Visualization of OpenGL texture objects.

• Nodes

  • Event Nodes

    

    • On Init
      Will be executed once whenever the "start" or "restart" command is sent.
    • On Frame
      Will be executed every frame during "running" state.

  • Program Node

    • Attributes
      
      • Dispatch Type: glDrawArray() or glDispatchCompute()
      • Framebuffer: screen or user created framebuffer
      • Draw Mode: 1st param of glDrawArray()
      • Size: 3rd param of glDrawArray() (The 2nd param will always be 0)
      • Work Group Size X/Y/Z: params of glDispatchCompute()

    

    • Node Inputs
      • Flow In
      • Uniforms
      • Uniform Blocks
      • Shader Storage Buffers
    • Node Outputs
      • Flow Out
      • Image Uniforms
      • Shader Storage Buffers
      • Framebuffer Attachments

  • Block Node

    
    Can be either a Uniform Block or a Shader Storage Buffer Block.
    
    Only block pins with same sizes can be linked.

  • Texture Node

    

  • Image Node

    

    • Node Inputs
      • Texture Object
    • Node Outputs
      • Image Object
      • Texture Object

  • Ping-pong Node

    
    Can process Image Objects or Shader Storage Buffers

  • Time Node

    

  • Mouse Position Node

    

Integration with any OpenGL Project

• You can find a simple example OpenGL application in main.cpp.

Other libraries used:

• GLEW: https://github.com/nigels-com/glew
• GLFW: https://github.com/glfw/glfw
• OpenGL Mathematics: https://github.com/g-truc/glm
• tiny file dialogs: https://sourceforge.net/projects/tinyfiledialogs/
• stb: https://github.com/nothings/stb
• Source Sans: https://github.com/adobe-fonts/source-sans
• Fork Awesome: https://github.com/ForkAwesome/Fork-Awesome