Everything implementing `AsGlowRenderer` implements `Renderer` and various
other traits, and by making `AsGlowRenderer` depend on these trait,
things requiring `AsGlowRenderer` can avoid listing those traits as
well.
Looks like implied trait bounds still won't work for the
`Self::TexutureId` and `Self::Error` requirements? So those are not
included here.
Everything implementing `AsGlowRenderer` implements `Renderer` and various
other traits, and by making `AsGlowRenderer` depend on these trait,
things requiring `AsGlowRenderer` can avoid listing those traits as
well.
Looks like implied trait bounds still won't work for the
`Self::TexutureId` and `Self::Error` requirements? So those are not
included here.
The important change here is that we now apply the additional damage
first, instead of using `.extend()` to add it after other elements. This
is important since `OutputDamageTracker` will ignore our damage elements
if there are behind an element with an opaque region.
This also makes things a bit simpler, especially `take_screencopy_frames()`,
which no longer needs a mutable references to extend then truncate.
The implementation of `OutputDamageTracker` isn't entirely clear, but as
far as I can tell this is intended to work, and it seems to work in some
testing.
This was mapping `UnderlyingStorage::Memory` to `None`. I don't see any
reason for this. Though this also shouldn't change behavior since
`TextureRenderElement` doesn't provide `underlying_storage` currently.
It would make sense to have a bound like
`for<'frame> R::Frame<'frame>: AsGlowFrame<'frame>`. But that appears to
not behave properly due to current limitations of the borrow checker:
https://blog.rust-lang.org/2022/10/28/gats-stabilization.html#implied-static-requirement-from-higher-ranked-trait-bounds
Instead, this makes `glow_frame` and `glow_frame_mut` associated
functions of the `AsGlowRenderer` trait. Then it is pretty
straightforward to make the `RenderElement` implementations generic
using that and `FromGlesError`.
It would make sense to make `Self::Error: FromGlessError` a requirement
of the `AsGlowRenderer` trait, but due to the lack of implied bounds
support, that produces a bunch of errors about missing bounds. If Rustc
improves that eventually, some bounds could be cleaned up a bit:
https://github.com/rust-lang/rust/issues/44491
The default implementation always returned `Kind::Unspecified`. Instead,
we should pass this method through to the wrapped element.
This fixes the use of cursor planes. Now trace logs show Smithay
assigning an element to the cursor plane, and tools like `drm_info` show
the cursor plane with an `FB_ID` attached.
