I've attached here one of the tests consistently failing on my Windows 7 x64 machine with NVIDIA GeForce 8500 GT. It is self-contained, just compile and run it with -Dsun.java2d.opengl=True, and it will paint literally nothing.

Without the opengl flag, it is as colorful as Royal Navy.

Either I have an unlucky machine or something is really broken. We have this behavior reproduced with various builds for some time already, most recent is jdk8 b54.