I love it. I have been going through the same thing, as I'm new to 3D. Learning the pipeline, and trying to figure out all the options we have out there for Web

I love it. I have been going through the same thing, as I'm new to 3D. Learning the pipeline, and trying to figure out all the options we have out there for WebGL. I ended up going with option #3, but due to the massive amount of data in my array i ran into performance issues when generating the initial array. I was able to split the original arrays ArrayBuffer into smaller ones, and send them to web workers (transferable objects :D) then concatenate the buffers at the end. I'll try to write an article as well, its amazing how much performance you can squeeze out of WebGL by doing your animation inside of your shader. Please do a write up on the RTT/Render to texture approach you mentioned ;)