I had to post about this amazing tool I found, now when I am writing my 3D games, I basically pray every time I play with a shader in case I brake it.

I know the basics but using either xCode or Android Studio (now has a tool), there is no syntax highlighting or easy way to see errors!

SHDR allows you to paste in your fragment and vertex shader and tells indicates any issues, and renders the results if it can!

BRILLIANT!