[GraphicsLayerTextureMapper] Support rounded rect clipping for backdrop-filter
r269772 (215445) added rounded rect clipping for backdrop-filter for TextureMapper and CoordinatedGraphics.
Let's add the feature to GraphicsLayerTextureMapper.
There are tests:
Created attachment 414177 [details]
(In reply to Fujii Hironori from comment #0)
> r269772 (215445) added rounded rect clipping for backdrop-filter for
Oops. It's not linked.
Bug 215445 – [GTK][WPE] CSS backdrop overlay corners are not rounded on results.webkit.org
This change also fixed the following bug for WinCairo port.
Bug 218785 – [TextureMapper] blur backdrop-filter makes its box-shadow blurry
Committed r269838: <https://trac.webkit.org/changeset/269838>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 414177 [details].