what's the differences between ClipStack in Graphite and ClipStack in Ganesh?

[nil]

what's the differences between ClipStack in Graphite and ClipStack in Ganesh?

[Michael Ludwig]

One is for managing the clip stack concept from the SkCanvas for how Ganesh handles GPU rendering, and one applies it to Graphite's capabilities.  Importantly, Graphite's clip stack is able to control the depth values that clip shapes are rendered with to let the depth test automatically clip affected draws.

[nil]

Graphite use depth-test in clipStack to do clip? so how to do anti-alising? use MSAA? how about the existed AA methods in skia such as QuadEdgeAA?