Yeah, looks like there's a couple of differences. If you look at the top left there are a few examples that are shadertoy examples. Example 5 (Smiley face) show

Yeah, looks like there's a couple of differences. If you look at the top left there are a few examples that are shadertoy examples. Example 5 (Smiley face) shows some differences: * the void main() declaration difference * the inclusion of iTime vs time * gl_FragColor vs fragcolor Also, the demo adds: uniform float time; varying vec2 vUv; varying vec3 vNormal; I think those are the biggest differences.