[wpe-webkit] EGL compatibility with imx-gpu-viv

[Peter Rashleigh]

Hello all,

I'm experiencing some issues attempting to run Cog on an i.MX8MP platform, using the Vivante GPU driver. Specifically, I get the following error messages:

EGL: Warning: No default display support on wayland
Cannot get default EGL display: EGL_SUCCESS
Cog-Message: 00:09:54.742: Acquired D-Bus well-known name com.igalia.Cog
[     1] Failed to open device: No such file or directory, Try again...
[     2] Failed to open device: No such file or directory, Try again...
[     3] Failed to open device: No such file or directory, Try again...
[     4] Failed to open device: No such file or directory, Try again...
[     5] _OpenDevice(1031): FATAL: Failed to open device, errno=No such file or directory.
....

My suspicion is that WPE-Webkit is calling eglGetDisplay(EGL_DEFAULT_DISPLAY) to determine what display is in use, but the imx-gpu-viv driver does not support default displays. Has anyone got a working configuration on this platform and would be willing to share the details? Is there a way to avoid using the default display?

I do have XDG_RUNTIME_DIR and WAYLAND_DISPLAY environment variables set, and other applications are able to use the display without issues.

I'm working on a custom Buildroot system. Some relevant version info is below:
wpewebkit 2.44.4
wpebackend-fdo 1.14.3
cog 0.18.4
linux-imx lf-6.6.36-2.1.0
weston-imx lf-6.6.36-2.1.0
imx-gpu-viv 6.4.11.p2.6
imx-gpu-g2d 6.4.11.p2.8


Thanks in advance,
Peter

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