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app: make CPU timings more useful

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Record the time for generating a frame and submitting it as well
as the time for issuing the frame to the GPU and swapping buffers.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2019-11-08 13:29:35 +01:00
parent f6cdc62120
commit 1678f922e7
2 changed files with 11 additions and 18 deletions
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app/window.go
+8 -17
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@@ -26,10 +26,8 @@ type Option func(opts *window.Options)
// Window represents an operating system window.
type Window struct {
driver window.Driver
lastFrame time.Time
drawStart time.Time
gpu *gpu.GPU
driver window.Driver
gpu *gpu.GPU
out chan event.Event
in chan event.Event
@@ -123,27 +121,20 @@ func (w *Window) update(frame *op.Ops) {
<-w.frameAck
}
func (w *Window) draw(size image.Point, frame *op.Ops) {
var drawDur time.Duration
if !w.drawStart.IsZero() {
drawDur = time.Since(w.drawStart)
w.drawStart = time.Time{}
}
func (w *Window) draw(frameStart time.Time, size image.Point, frame *op.Ops) {
w.gpu.Draw(w.queue.q.Profiling(), size, frame)
w.queue.q.Frame(frame)
now := time.Now()
switch w.queue.q.TextInputState() {
case input.TextInputOpen:
w.driver.ShowTextInput(true)
case input.TextInputClose:
w.driver.ShowTextInput(false)
}
frameDur := now.Sub(w.lastFrame)
frameDur = frameDur.Truncate(100 * time.Microsecond)
w.lastFrame = now
if w.queue.q.Profiling() {
frameDur := time.Since(frameStart)
frameDur = frameDur.Truncate(100 * time.Microsecond)
q := 100 * time.Microsecond
timings := fmt.Sprintf("tot:%7s cpu:%7s %s", frameDur.Round(q), drawDur.Round(q), w.gpu.Timings())
timings := fmt.Sprintf("tot:%7s %s", frameDur.Round(q), w.gpu.Timings())
w.queue.q.AddProfile(profile.Event{Timings: timings})
}
if t, ok := w.queue.q.WakeupTime(); ok {
@@ -260,7 +251,7 @@ func (w *Window) run(opts *window.Options) {
// No drawing if not visible.
break
}
w.drawStart = time.Now()
frameStart := time.Now()
w.hasNextFrame = false
e2.Frame = w.update
w.out <- e2.FrameEvent
@@ -297,8 +288,8 @@ func (w *Window) run(opts *window.Options) {
w.destroy(err)
return
}
w.draw(frameStart, e2.Size, frame)
if gotFrame {
w.draw(e2.Size, frame)
// We're done with frame, let the client continue.
w.frameAck <- struct{}{}
}