fix-mali-probe : lp:mir : Git : Code : Mir

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Name:: fix-mali-probe

Repository:: lp:mir

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8b06167... by Chris Halse Rogers on 2021-12-03

gbm-kms: Attempt rendering probe with a DRM master fd.

It seems the Mali EGL implementation requries DRM master. In order for
probe() to succeed, try giving it one.

But, since *most* platforms don't need a master fd to bring EGL up,
fall back to plain `::open()`, as before.

3711376... by "bors[bot]" <26634292+bors[bot]@users.noreply.github.com> on 2021-12-02

Merge #2237

2237: Cleanup r=wmww a=AlanGriffiths

A bit of tidying up inspired by trying the new CLion's code inspection

Co-authored-by: Alan Griffiths <email address hidden>

700c4c5... by "bors[bot]" <26634292+bors[bot]@users.noreply.github.com> on 2021-12-02

Merge #2232

2232: gbm-kms: Try harder to pick a working GBM framebuffer format r=AlanGriffiths a=RAOF

Some drivers (*cough* Mali) don't support rendering to `RGBX` GBM buffers. We don't care about the difference between `RGBX` and `RGBA` for framebuffers, so check whether `RGBX` will work and try to fall back to `RGBA` if it doesn't.

There are some obvious points of further work here - checking what formats the *display* hardware supports and using that to populate the `MirDisplayConfiguration`, respecting the pixel format specified in the `MirDisplayConfiguration`, and so on - but that should be deferred until we make the switch to Atomic KMS.

Closes: #2226

Co-authored-by: Christopher James Halse Rogers <email address hidden>

3338d05... by Chris Halse Rogers on 2021-12-02