For http://aframe.io/, how can I render text without having to create an image?
EDIT: A text component has landed in A-Frame master branch. This will roll out in 0.5.0. The component will have support for fonts, alignments, anchors, baselines, shaders, etc.
https://aframe.io/docs/master/components/text.html
You can use some of the community components:
I recommend the Bitmap Font Text Component which is performant and looks visually good: