Currently there's no easy way to *only* disable the Decora-D3D backend. The only option right now is to disable the entire D3D-based Java2D pipeline via -Dsun.java2d.d3d=false.
Therefore, we should add a system property to turn off just the Decora-D3D backend.
Therefore, we should add a system property to turn off just the Decora-D3D backend.