[ARRISEOS-41099] Repaint page after receiving wpe_compositor_refresh_…

[jaroslaw-bojko-red]

…event

The entire page should be repainted after receiving wpe_compositor_refresh_event. This will make webbrowser repond to visibility change from awc_cli.

[jacek-skiba-red]

Currently all our apps which use canvas (lightning or teletext) have this bug: even if apps are not repainting, they are pushing new frames to weston (eg. rdkcentral/Lightning#380)

Please create dummy apps based on 1) webgl 2) canvas API and check if visibility change also works there.

Additionally, please extend commit description with added flow (in general copy flow analyze from ARRISEOS-41099).

[jacek-skiba-red]

We should also know why this fix is rather not upstremable, because it seems that everything is working on RPI build:

• open thunder interface on port 9998
• launch WebkitBrowser
• launch BBC iPlayer URL
• go to RDK Shell tab
• switch visibility to On/Off

One of the differences it that our stack is using Weston compositor, and RDK stack is using Westeros.
Without that knowledge we cannot upstream this issue (FYI @rychem )

[jacek-skiba-red]

Please create stability test to toggle visiblity to true/false on html5 and canvas app which is all the time generating amimations.
Let's check if forceUpdate is not causing any regression.

Test for each app should run for at least 1h.

[jaroslaw-bojko-red]

Currently all our apps which use canvas (lightning or teletext) have this bug: even if apps are not repainting, they are pushing new frames to weston (eg. rdkcentral/Lightning#380)

Please create dummy apps based on 1) webgl 2) canvas API and check if visibility change also works there.

Additionally, please extend commit description with added flow (in general copy flow analyze from ARRISEOS-41099).

Canvas moving objects: canvas_bgra.html.txt
Canvas still: canvas_still.html.txt
Webgl moving objects: webgl_exmaple.html.txt
Webgl still: webgl_still.html.txt

Visibility changes successfully in all cases, webgl and canvas. For still tests, frames are rendered only when avc_cli hides/shows applications.

Event flow added to commit description.

[jaroslaw-bojko-red]

Please create stability test to toggle visiblity to true/false on html5 and canvas app which is all the time generating amimations. Let's check if forceUpdate is not causing any regression.

Test for each app should run for at least 1h.

Please create stability test to toggle visiblity to true/false on html5 and canvas app which is all the time generating amimations. Let's check if forceUpdate is not causing any regression.

Test for each app should run for at least 1h.

Script: script.sh.txt

I wrote a script and ran two applications:
1 hour of canvas_bgra.html.txt
1 hour of https://interactive-examples.mdn.mozilla.net/pages/css/animation.html

Result: Visibility was changed every 1s for 1h for every app. After 2h the box behaves normally, no crashes or glitches. I run the euronews and site normally plays the video.

Memory footprint after 2 hours of tests:

Oct 27 14:53:19 E0B7B1-APLSTB-300000824809 WPEWebProcess[3236]: 221027-12:53:19.870917 [mod=MemoryPressure, lvl=INFO] [tid=16] Current memory footprint: 145 MB, peak: 179 MB
Oct 27 14:53:19 E0B7B1-APLSTB-300000824809 WPEWebProcess[3236]: 221027-12:53:19.872471 [mod=MemoryPressure, lvl=INFO] [tid=16] GFX memory usage 165MB/48%, peak memory 233MB/68%
Oct 27 14:53:19 E0B7B1-APLSTB-300000824809 WPEWebProcess[3236]: 221027-12:53:19.873818 [mod=MemoryPressure, lvl=INFO] [tid=16] CRR memory usage 42MB/44%, peak memory 44MB/46%

Footprint taken during video playback by euronews after 2h of testing (no restart after test)