I've been working on a redesign of the compositor, in order to make rust-layers more functional as a standalone library and also to simplify ownership of the layer tree. In the current design, there are two parallel trees, one of rust-layer ContainerLayers/TextureLayers and one of servo CompositorLayers.
The main aspects of the rework: * ContainerLayers (and thus rust-layers) will know about tiling and BufferRequests. * ComposiorLayer will disappear, instead tacked on via generics to ContainerLayer with its methods replaced by ContainerLayer helper methods in servo. * The layer tree will be a simple tree owned by Scene, hopefully eliminating mutable roots. Old design: https://docs.google.com/drawings/d/1xcsfjxAsfhpAFIv0C9bMnC1VgiEPsmY5cawdBdiKCT4/edit?usp=sharing New design: https://docs.google.com/drawings/d/1oohFBhHM-AlhKbehTt8gbPPYWtrX_eZE7W7LXPSSxj0/edit I have a patch for the first two parts, which I hope to post soon. It's big and complicated, because of the inherent messiness of reworking the tree structure. My hope is that it can land soon and I can begin to move onto the last phase of the redesign. After the first patch lands and before the work is done, performance may regress, because I've had to create more mutable roots (std::cell::RefCell) to access the data that used to be in ContainerLayer. These should disappear in the future. My hope is that functionality does not regress, though the change is large and invasive, so there may be new unexpected failures. I will try to stay on top of everything. --Martin _______________________________________________ dev-servo mailing list dev-servo@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-servo
