Sluggish CSS animations

[tdusmoha]

What were you doing?

Loading a full page image slider

What did you expect to happen?

The images would slide smoothly

What happened instead?

Instead it was sluggish

Was there an error message displayed? What did it say?

No error, but the same page works fine on other distro.

Version of FullPageOS? 0.8.1

[Can be found in /etc/fullpageos_version ALWAYS INCLUDE.]

Screenshot(s) showing the problem:

[If applicable. Always include if unsure or reporting UI issues.]

[guysoft]

The GPU acceleration is enabled by default in FullPageOS. Its the main difference from other distros. You can try disabling it and see if it improves the situation.

[remi-grumeau]

Is the transition done using CSS transform? Did you hide the backface-visibility? Goofing with opacity? If done by some crappy Swiss Knife JQuery plugin, remember a Pi as a 4x slower CPU & half RAM a mid-level smartphone has... you have do be smart regardless performance within your app. Remi

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Le 27 oct. 2017 à 23:52, Guy Sheffer ***@***.***> a écrit : The GPU acceleration is enabled by default in FullPageOS. Its the main difference from other distros. You can try disabling it and see if it improves the situation. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or mute the thread.

[tdusmoha]

@guysoft tried to tweak the settings on chrome://flags, but no success.
@remi-grumeau yes i'm using CSS transform.

For lack of a better solution, I am starting chromium over Jessie (desktop) in kiosk mode. My css animations work flawlessly.

If you would like to give it a go, here's the page i'm trying to load: redline dot mycloud dot mu

[ppejovic]

@guysoft how do you go about disabling the gpu acceleration? Thanks.

[tdusmoha]

Type the following in your address bar chrome://gpu

[ppejovic]

@tdusmoha no, this is a distro setting.

@guysoft Is this the correct setting GUI_INCLUDE_ACCELERATION=no? That I assume would require me to build the distribution?

[guysoft]

@ppejovic Indeed, this is the default setting when building the distro.
It sounds like people want also a non-accelerated version. Because I also saw a similar problem in #232.
I could build a nightly with this setting disabled.

[ppejovic]

Thanks @guysoft. I did a non-accelerated build and I saw a noticeable improvement in the css animations on my Pi 2 Model B. There is still some jitter, so will have to keep looking at what I can tweak next! A nightly build would be useful.

Amazing project btw. Thought it was cool building a distro on the os itself. Thank-you!

[ppejovic]

So on the non-accelerated distro I enabled the "OpenGL desktop driver with full KMS" and now the css animations are buttery smooth! I haven't tested this setting on the accelerated version. HTH.

[guysoft]

Hey, I created a variant of FullPageOS that has graphical acceleration disabled, so you can test that:

http://unofficialpi.org/Distros/FullPageOS/no-acceleration/nightly/2018-07-22_2018-06-27-fullpageos-no-acceleration-stretch-lite-0.10.0.zip

md5: 2197ebd78f65c17e4155e5bf93e7af55

[tdusmoha]

Great! Thanks for sharing. Will test & post results

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On 23 Jul 2018, 02:37 +0400, Guy Sheffer ***@***.***>, wrote: Hey, I created a variant of FullPageOS that has graphical acceleration disabled, so you can test that: http://unofficialpi.org/Distros/FullPageOS/no-acceleration/nightly/2018-07-22_2018-06-27-fullpageos-no-acceleration-stretch-lite-0.10.0.zip md5: 2197ebd78f65c17e4155e5bf93e7af55 — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[guysoft]

@ppejovic

So on the non-accelerated distro I enabled the "OpenGL desktop driver with full KMS" and now the css animations are buttery smooth! I haven't tested this setting on the accelerated version. HTH.

This sounds like Raspbian changed how the acceleration works and that this script should change to match the new method "OpenGL desktop driver with full KMS" works

[samijandali]

@guysoft thanks for referring me here!
Well for me now the page is crashing and I'm getting the "Aw, snap" from chromium (used the above image and enabled OpenGL with full KMS

[samijandali]

@ppejovic I have my videos in an HTML video element and they run off using javascript. I am using Pi 3 B (not the latest one)

[tvandergeer]

@ppejovic Can you elaborate on what I should do to enable the "OpenGL desktop driver with full KMS" option?

[ppejovic]

@tvandergeer http://www.raspberryconnect.com/gamessoftware/item/314-trying_out_opengl_on_raspberry_pi_3

Though subsequent to my post above I’ve found this makes chrome crash during video playback.