report.go RawHistoryFolder

1package drm
2
3import (
4	"maps"
5
6	"github.com/bnema/neferwl/internal/adapters/outputkit/surfaces"
7	"github.com/bnema/neferwl/internal/ports"
8)
9
10// Reports to wayland: what the output shows and has read.
11
12// report queues what the output shows and has read, so replaced client
13// buffers can be released (see presented.Queue for merging).
14func (o *Output) report(flip *ports.FlipInfo, seen map[ports.WindowID]uint64) {
15	o.capped = false
16	var reads map[ports.WindowID]uint64
17	if o.capHidden != nil {
18		seen, reads, o.capped = o.capHidden(seen)
19	}
20	if o.reports.Push(ports.OutputPresented{Output: o.conn.name, Flip: flip, Shown: o.shown, Queued: o.queued, Seen: seen, ChildReads: reads}) {
21		o.log.Warn().Str("connector", o.conn.name).Msg("wayland is not reading output reports; flips merged")
22	}
23}
24
25// shownBy returns an immutable snapshot of the content Seq of drawn windows.
26// The scratch map is private to the output; a snapshot may still be read by
27// wayland after a subsequent flip, so never refill a previously sent map.
28func (o *Output) shownBy(s ports.Scene, seen map[ports.WindowID]uint64) map[ports.WindowID]uint64 {
29	if o.showsScratch == nil {
30		o.showsScratch = make(map[ports.WindowID]uint64)
31	}
32	// A closed window drawn from its kept content is not shown to its
33	// client: the empty content has no frame to present.
34	surfaces.FillShown(o.showsScratch, seen, s, o.kept)
35	if !maps.Equal(o.showsSnapshot, o.showsScratch) {
36		o.showsSnapshot = maps.Clone(o.showsScratch)
37	}
38	return o.showsSnapshot
39}
40
41func (o *Output) directShownBy(id ports.WindowID, seq uint64) map[ports.WindowID]uint64 {
42	if len(o.directShowsSnapshot) != 1 || o.directShowsSnapshot[id] != seq {
43		o.directShowsSnapshot = map[ports.WindowID]uint64{id: seq}
44	}
45	return o.directShowsSnapshot
46}