pixman-renderer: track Pixman formats in pixel format table

Instead of using a hardcoded switch to convert wl_shm formats to Pixman formats, add the Pixman format codes to the pixel format table. This makes it easier to add support for more shm formats when using the Pixman renderer. (Supporting 10-bit shm buffer formats is also a small step towards letting the pixman renderer generate 10-bit deep output.)

I tested this with a variant of the weston-simple-shm client that supports multiple shm buffer formats; see the branch at https://gitlab.freedesktop.org/mstoeckl/weston/-/commits/simple-shm-10 .

added Core compositor Pixman renderer labels

Looks good to me apart from two minor comments, thanks!

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• 873553f6 - pixman-renderer: track Pixman formats in pixel format table

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resolved all threads

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• 5ff00e96 - pixman-renderer: track Pixman formats in pixel format table

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• 8ab05c76 - pixman-renderer: track Pixman formats in pixel format table

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Yeah, looks good. Let's leave this for a couple of days and see if there are any more comments.

LGTM as well

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• 8ab05c76...448f05e8 - 52 commits from branch wayland:main
• 8a7f1e2b - pixman-renderer: track Pixman formats in pixel format table

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enabled an automatic merge when the pipeline for 8a7f1e2b succeeds

Everyone seems to be happy about this, rebased and did two small function indents. Merging when CI finishes with it.

merged