Bug 276845

Summary:

[GTK] Janky repainting while resizing browser window, and GPU artifacts on open source AMD graphics

Product:

WebKit

Reporter:

Jeff Fortin <nekohayo>

Component:

WebKitGTK

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Normal

CC:

bugs-noreply

Priority:

Version:

WebKit Nightly Build

Hardware:

OS:

Linux

Bug Depends on:

Bug Blocks:

245783, 268972

Attachments:

Description	Flags
Video demonstration	none

Jeff Fortin

Reported 2024-07-19 21:01:24 PDT

Created attachment 471917 [details] Video demonstration Testing Epiphany 47 TP / nightly (WebKitGTK 2.45.5 / GStreamer 1.24.5 / GTK 4.15.4), and any previous version, if you resize the window, the resizing is very janky even on Wayland: contents visibly repaint slowly compared to the mouse movement, etc. Generally, I've observed this both on Intel and AMD open source graphics. While the jank is not necessarily accompanied by artifacts while testing on my laptop with Intel Kabylake graphics, it is full of artifacts when testing on open source AMD graphics on Wayland; WebKitGTK browsers' web views are affected in this way, but pure GTK4 applications (such as Nautilus) have completely smooth resizing with no artifacts. Attached is a video showing this with AMD graphics. This GPU is an AMD Radeon R9 270 with Mesa 23.3.6 on Fedora 39.

Attachments
Video demonstration (3.21 MB, video/webm) 2024-07-19 21:01 PDT, Jeff Fortin	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Note You need to log in before you can comment on or make changes to this bug.