What is the fastest engine for drawing large numbers of semitransparent trianges?

I enjoy computer graphics.

I was wondering what the fastest engine was with the following functionality:

Draws triangles with 4 color channels rgba and allows for the drawing of point and directional lights.

Texturing would be a cool additional feature, but again I am looking for the fastest engine, not the most functional. Camera animation and object animation will be imperative.

Finally there are really 2 answers for this question, 1 for general development and one for web, but if you can only speak to one or the other your contributions will be appreciated!