Currently, there's no way to enable custom filters in Wk1 mode. Also, it looks like WebGL fails to instantiate when running in that mode.
They are enabled by default when WebGL is enabled. They do however fail or cause crashes because BitmapTextureImageBuffer::applyFilter tries to build the FilterEffectRenderer without a Document pointer.
(In reply to comment #1) > They are enabled by default when WebGL is enabled. They do however fail or cause crashes because BitmapTextureImageBuffer::applyFilter tries to build the FilterEffectRenderer without a Document pointer. That is bug #106796, but only applies when non-GL TextureMapper is used. There is also a problem even with the GL TextureMapper.
Created attachment 182598 [details] Patch
Comment on attachment 182598 [details] Patch Clearing flags on attachment: 182598 Committed r139731: <http://trac.webkit.org/changeset/139731>
All reviewed patches have been landed. Closing bug.