Of course it follows the spec, but it doesn't mean it does so in a way that makes sense and is able to perform well given current GPU hardware. See http://bugreports.qt.nokia.com/browse/QTBUG-7255 for example.
or: Qts Xrender implementation follows the spec and Intel and Nvidia are broken.
Of course it follows the spec, but it doesn't mean it does so in a way that makes sense and is able to perform well given current GPU hardware. See http://bugreports.qt.nokia.com/browse/QTBUG-7255 for example.
VBO = OpenGL 1.5
FBO = OpenGL 3.0
So assuming VBO's are really all that's needed, I'd assume classic Mesa drivers with KMS are sufficient Right Now (tm) since they advertise GL_ARB_vertex_buffer_object.