Yiwei Zhang
551f61bdb3
This unblocks Xwayland with zink-on-venus + sommelier wayland proxy.
- For glamor, zink uses linear modifier.
- For Virgl clients, classic 3d resource is used and sommelier fixes
the modifier and stride infos no matter wl-drm or dma-buf protocol.
- For Venus clients:
- via the legacy wl-drm protocol, invalid modifier is passed via
sommelier, and host recovers the tiling in the way dealing with
modifier unaware clients (e.g. I915_GEM_GET_TILING). For hosts
unable to recover, they assume linear and venus forces linear on
legacy path.
- via the new zwp_linux_dmabuf_feedback_v1 (version 3/4) protocol,
explicit modifier is used, and zink handles that without issues.
This doesn't deserve a driconfig as zink-on-venus to support xserver
itself already requires special enough integration beyond a config.
Reported-by: Igor Torrente <igor.torrente@collabora.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/10066
Fixes: 1c3db3e39a ("zink: blow up broken xservers more reliably")
Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Ryan Neph <ryanneph@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26082>
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