1627117 - Browser flashes black when starting profiling with screenshots and DirectComposition on

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P1)

Description

[Jeff Muizelaar [:jrmuizel]]

Presumably because of turning off the compositor.

Comment 1

[Jeff Muizelaar [:jrmuizel]]

Sotaro, can you reproduce this?

Comment 2

[Jeff Muizelaar [:jrmuizel]]

I can reproduce this on both of my Windows machines.

Comment 3

[Sotaro Ikeda [:sotaro]]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #1)

Sotaro, can you reproduce this?

Yes, I could reproduce the problem. When I implemented, it did not happen such often:( There are some workaround to suppress it. Then it is a regression of Bug 1602643.

Crash of Bug 1624817 could also happen. If the crash happen, it also could cause similar effect.

Comment 4

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #3)

(In reply to Jeff Muizelaar [:jrmuizel] from comment #1)

Sotaro, can you reproduce this?

Yes, I could reproduce the problem. When I implemented, it did not happen such often:(

It seems that a change after Bug 1602643 seems to made the symptom very often.

Comment 5

[Sotaro Ikeda [:sotaro]]

Somehow, first rendering after disabling WR native compositor did not shown :(

Comment 6

[Sotaro Ikeda [:sotaro]]

When I forced to do WR rendering twice during disabling WR native compositor. The problem was reduced for me. I wonder if it could be a short term fix.

Comment 7

[Sotaro Ikeda [:sotaro]]

(In reply to Sotaro Ikeda [:sotaro] from comment #5)

Somehow, first rendering after disabling WR native compositor did not shown :(

It seems that first rendering to SwapChain was not used by IDCompositionVisual2.

Comment 8

[Sotaro Ikeda [:sotaro]]

Attachment: Bug 1627117 - Trigger WR rendering twice during disabling native compositor

Comment 9

[Sotaro Ikeda [:sotaro]]

Bug 1627415 is created for long term fix.

Comment 10

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/7256d96b4de6
Trigger WR rendering twice during disabling native compositor r=jrmuizel

Comment 11

[Bogdan Tara[:bogdan_tara | bogdant]]

https://hg.mozilla.org/mozilla-central/rev/7256d96b4de6