I needed to add a shader to allow a mask to be used for video with an alpha channel, like this: http://jakearchibald.com/scratch/alphavid/
It's definitely helpful seeing everything laid out tutorial-style. As simple and well-written as glfx.js is, there are still some quirks of WebGL and shaders that are not at all obvious to the uninitiated JS hacker.
I needed to add a shader to allow a mask to be used for video with an alpha channel, like this: http://jakearchibald.com/scratch/alphavid/
It's definitely helpful seeing everything laid out tutorial-style. As simple and well-written as glfx.js is, there are still some quirks of WebGL and shaders that are not at all obvious to the uninitiated JS hacker.