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Flickering issue with webkitgtk3 under wayland using gles

james-cc
Associate II

‎2025-01-22 09:09 AM

I'd like to move from mickledore to the current ST offering on scarthgap.  We are using the STM32MP157D.

We require a web browser, and WebKit worked well for us on mickledore using QT5.

Since QT has been spun out to a plug-in and it is unclear how well-supported it is (ST's documentation seems lagging), I decided to go with Weston/Wayland and use a simple GTK/GDK app.

Westion is working - the GPU `/usr/local/demo/bin/weston-st-egl-cube-tex` runs nicely.  Simple apps using GDK are also working.

Sadly, though, the app embedding a WebKit view has a hard-to-describe random flickering issue.  It renders the page but then randomly overlays a white screen that occasionally flashes on and off.

 

Anyone able to offer some experience:

- Has anyone got a lightweight browser working on the STM32MP1 using the GPU and the recent ST scarthgap releases?

- Or got QT6 working on STM32MP1.  Did you use the ST's "QT plug-in"?

- Any advice for configuring webkitgtk3 (found in meta-oe)?  I see it is untouched by the ST layers.

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2 REPLIES 2
james-cc
Associate II

‎2025-01-23 03:28 AM

@james-cc wrote:

Sadly, though, the app embedding a WebKit view has a hard-to-describe random flickering issue.  It renders the page but then randomly overlays a white screen that occasionally flashes on and off.

This is rendering the text correctly, but none of the images.  I end up with large white boxarea being flashed at the top left.

Software compositing works (slowly).

Running the code with `GDK_GL=gles EGL_LOG_LEVEL=debug` tells me there is an invalid surface:

libEGL debug: EGL user error 0x300d (EGL_BAD_SURFACE) in eglSwapInterval

libEGL debug: EGL user error 0x300d (EGL_BAD_SURFACE) in eglSwapInterval

libEGL debug: EGL user error 0x300d (EGL_BAD_SURFACE) in eglSwapInterval

libEGL debug: EGL user error 0x300d (EGL_BAD_SURFACE) in eglSwapInterval

...

 Any advice is welcome.

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james-cc
Associate II

‎2025-01-24 04:31 AM

So I chose to go with wpewebkit from meta-webkit layer found at https://github.com/Igalia/meta-webkit.git (scrathgap branch - ff17c29c - 2jan2025).

I added the "wpewebkit libwpe wpebackend-fdo cog" packages.  `cog` renders the few simple pages I threw at it successfully.

So using wayland (via wpebackend-fdo), no QT nor webkitgtk3.

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