Is this nVidia's driver? Or some random code that can draw a solid color triangle on a tegra? Where's the shader compiler backend and the rest of libGLESv2?
The current shader "backend" (that is, a microcode assembler) is at https://github.com/grate-driver/grate/tree/master/src/libcgc. Shader compilation would be done by mesa. The rest of libGLESv2 seems unimplemented for now.
No, it is not.
Looks like this is a reverse engineered user space shim that runs between nvidia kernel driver and a modified version of MESA for OpenGL.
The headline is completely wrong in implying that this is a pre-existing Nvidia driver.