Bug 119571 - [GTK] Accelerated compositing results in incorrect rendering of the media controllers
Summary: [GTK] Accelerated compositing results in incorrect rendering of the media con...
Status: RESOLVED WORKSFORME
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebKitGTK (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2013-08-08 05:23 PDT by Andres Gomez Garcia
Modified: 2020-04-22 08:05 PDT (History)
6 users (show)

See Also:

Attachments
Minibrowser showing the rendering problems in the media controllers with accelerated compositing. (8.90 KB, image/png)
2013-08-08 05:25 PDT, Andres Gomez Garcia 		no flags Details
Gtklauncher showing the rendering problems in the media controllers with accelerated compositing. (8.54 KB, image/png)
2013-08-08 05:26 PDT, Andres Gomez Garcia 		no flags Details
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Description Andres Gomez Garcia 2013-08-08 05:23:57 PDT 
When playing some multimedia content in WebKitGtk+ 1 or 2 with accelerated compositing enabled we can see problems on the rendered media controllers.

Incorrect rendering:
$ WebKitBuild/Release/Programs/MiniBrowser ./Tools/iExploder/iexploder-1.7.2/src/media/blank.ogg
$ WebKitBuild/Release/Programs/GtkLauncher --enable-accelerated-compositing=TRUE ./Tools/iExploder/iexploder-1.7.2/src/media/blank.ogg

Correct rendering:
$ WebKitBuild/Release/Programs/GtkLauncher ./Tools/iExploder/iexploder-1.7.2/src/media/blank.ogg

The problems are even more obvious with short media clips.
$ WebKitBuild/Release/Programs/MiniBrowser ./Source/WebKit/gtk/tests/resources/test.ogg
Comment 1 Andres Gomez Garcia 2013-08-08 05:25:54 PDT 
Created attachment 208328 [details]
Minibrowser showing the rendering problems in the media controllers with accelerated compositing.
Comment 2 Andres Gomez Garcia 2013-08-08 05:26:15 PDT 
Created attachment 208329 [details]
Gtklauncher showing the rendering problems in the media controllers with accelerated compositing.
Comment 3 Sergio Villar Senin 2013-08-08 06:58:55 PDT 
I don't get exactly where the problem is. The right part of the control inside the slider?
Comment 4 Xabier Rodríguez Calvar 2013-08-08 07:28:55 PDT 
(In reply to comment #3)
> I don't get exactly where the problem is. The right part of the control inside the slider?

The right part of the time slider thumb. It's truncated.
Comment 5 Zan Dobersek 2013-09-11 06:17:15 PDT 
FWIW, the slider thumb is painted just fine when the video is shown in an HTML document, through <video>.
Comment 6 Enrique Ocaña 2020-04-22 08:05:03 PDT 
I double-checked that accelerated compositing was being used and found that this bug isn't reproducible anymore nowadays.