xwayland: glamor support broken on iMX8

[embdur]

Xwayland glamor support appears to be broken on iMX8:

Disabling glamor and dri3 support, XWAYLAND_NO_GLAMOR is set
Failed to initialize glamor, falling back to sw

I found this string in libEGL(imx-gpu-viv):

# fgrep XWAYLAND_NO_GLAMOR /usr/lib/aarch64-linux-gnu/libEGL.so.1.5.0
grep: /usr/lib/aarch64-linux-gnu/libEGL.so.1.5.0: binary file matches

If we change this string to something else e.g. by using sed, Xwayland starts fine with glamor support.

This only happens when weston automatically launches Xwayland via socket. If Xwayland is run manually, after starting weston, the falling back to sw message does not appear. If we add -verbose 3 to Xwayland command line it says:

(II) glamor: Using GBM backend

There is no reference to Glamor on https://www.nxp.com/docs/en/user-guide/IMX_GRAPHICS_USERS_GUIDE.pdf or https://github.com/nxp-imx/imx-manifest/blob/imx-linux-kirkstone/GraphicsChangeLogv6. Does NXP even support glamor?

[thochstein]

Sorry for the trouble. I'm told that glamor was removed due to a conflict with Weston that caused an xterm hang.

We will continue to look at the issue to see if we can restore glamor in a future release.

[otavio]

As NXP binaries do not support this, there isn't much we can do. Therefore, I will be closing this issue.