Hi, Unfourtunatly the situation is worse than I expected, currently xrender doesn't seem to support anything better than billiniar interpolation. Because alias-names where used by the pipeline it didn't turn up sooner (as they are guaranteed to be available, whereas the concrete filter-implementation-name may change from platform to platform).
Seems at least for now we have to fallback for bicubic, I'll prepare a patch. Thanks for bringing up this issue! - Clemens 2012/9/3 Vadim Pakhnushev <vadim.pakhnus...@oracle.com>: > Hi Clemens, > > We've found a bug in Xrender pipeline when setting interpolation rendering > hint to bicubic by calling > g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, > RenderingHints.VALUE_INTERPOLATION_BILINEAR) doesn't work as expected. In > fact bicubic interpolation seems to fall back to bilinear, which can be > clearly seen in the attached screenshot. > I've attached the test, there are 3 images rendered with up scaling with > various interpolation settings, upper 3 are rendered to the screen, lower 3 > to the BufferedImage which works as the reference. With > -Dsun.java2d.Xrender=True the bicubic interpolated image is in fact > interpolated using bilinear filter. > > Could you please take a look? > > Thanks, > Vadim
