xwayland: implement pixmap_from_buffers for the eglstream backend

Graphics / X.Org / X.Org Server - Erik Kurzinger [nvidia.com] - 9 April 2021 14:00 UTC

Provides an implementation for the pixmap_from_buffers DRI3 function for xwayland's eglstream backend. This will be used by the NVIDIA GLX driver to pass buffers from client applications to the server. These can then be presented using the PRESENT extension.

To hopefully make this less error-prone, we also introduce a "type" field for this struct to distinguish between xwl_pixmaps for the new DRI3-created pixmaps and those for the existing glamor-created pixmaps.

Additionally, the patch enables wnmd present mode with the eglstream backend. This involves creating a wl_buffer for the provided dma-buf before importing it into EGL and passing this to the compositor so it can be scanned out directly if possible.

Since both backends now support this present mode, the HAS_PRESENT_FLIP flag is no longer needed, so it can be removed.

38e875904 xwayland: implement pixmap_from_buffers for the eglstream backend
hw/xwayland/xwayland-glamor-eglstream.c | 202 +++++++++++++++++++++++++++++++-
hw/xwayland/xwayland-glamor-gbm.c | 3 +-
hw/xwayland/xwayland-glamor.c | 12 --
hw/xwayland/xwayland-glamor.h | 6 +-
hw/xwayland/xwayland-present.c | 5 +-
5 files changed, 204 insertions(+), 24 deletions(-)

Upstream: cgit.freedesktop.org

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