I have translated the headers for the openvg library by A.J. Starks for Freepascal.
You can download a release candidate with build instructions and demo's from http://thaddy.com/shapesfpc.zip
Docs are in shapes.pp (use) and in readme.fpc (build).
Note that you MUST follow the build instructions because you need a fpc2.7.1 compiler for this to work.