- ops by cables user pandur (https://cables.gl/user/pandur)
- cables by undefined development (http://undev.studio)
- glmatrix by toji (https://github.com/toji/gl-matrix)
- Photoshop math GLSL shaders by Romain Dura (https://mouaif.wordpress.com/2009/01/05/photoshop-math-with-glsl-shaders/)