OpenGL ES 3 guide
This is currently in alpha testing, expect slow speeds, graphical glitches, and a myriad of problems with it. If you're expecting reasonable speeds out of this, you are sorely mistaken. This will run slow on every single Android device, no matter if it is the most powerful one in the world.
http://wiibrew.org/ has a bunch of free homebrew applications to try out.
Warning! Development versions are released every time a developer makes a change to Dolphin. Using development versions enables you to use the latest and greatest improvements to the project, at the cost of decreased stability.