scoobadood / shady

A simple implementation of a visual shader graph tool.

Shady

What?

A simple implementation of a visual shader graph tool. Shady:

• Allows visual editing of shader graphs
• Allows interactive experimentation with shader settings in real time.
• Is extensible, adding new shaders/effects will be straight forward.
• Allows save and load of shader graphs.

Why?

Not because the world needs one so much as that I need to build one. It's a playground for testing shader ideas, experimenting and learning.

Current Features

Shady! is very much a work in progress. Right now it has a minimal set of transforms, basically beyond save and load it suports only Brightness and RGBA channel splitting.

The focus at the moment is to get the core capabiities of load/edit/save working correctly before expanding the number and types of supported transforms.

Planned Features

The current TODO list is really just implementing core editing functionality:

• Implement the Save menu
• Allow editing of Config in nodes
• Allow editing names
• Enable force re-evaluation of graph/nodes

After that there will be more xforms

• Contrast/Blur/Sharpen/Curves, LUTs
• Custom shaders (BYO GLSL)

Supported Platforms

Currently Shdy! is supported on my M1 MacBook Pro :)

The libraries I'm using are more or less platfrom independent and so cross-platfrom support should be straightforward but it's not my primary focus right now. A sufficiently motivated engineer should be able to port it to Linux or Windows flavours.

Dependencies

* OpenGL 4.1   : Because.
* GLFW         : To handle windowing and context
* ImGui        : For UX widgets.
* STB          : Single file for load and save of images
* NlohmanJson  : `JSON` parsing for loading saved graphs.