[PATCH weston v2 0/8] Generic Wayland dmabuf protocol

Pekka Paalanen ppaalanen at gmail.com
Wed Jul 1 07:56:12 PDT 2015

From: Pekka Paalanen <pekka.paalanen at collabora.co.uk>

Hi all,

here is the v2 iteration of the Wayland protocol extension for generic sharing
of dmabufs between clients and the compositor.

The RFCv1 can be found at

The related tracking bug is

The major changes compared to RFCv1 are:
- use drm_fourcc.h to define format codes
- support FB modifiers and y-flip
- simplified protocol
- improved documentation
- flags for interlaced buffer content

As you can see, we have dropped the "RFC" status from this series now. We think
this is in a good enough shape to be merged into Weston as an experimental
protocol and implementation. Obviously we are still lacking on:
- agreed ways to flush caches (what can we cache? EGLImages? DRM FBs?)
- enumerating supported formats
- supported FB modifiers?
- do all imports in compositor before-hand, not as-needed
  (the import as DRM FB)
- EGL doesn't support dmabuf import with modifiers yet
- a test application not specific to (Intel) hardware (vivid?)
- compositor-drm.c's import of dmabuf needs a rewrite to bypass GBM
  (to be done after atomic lands)
- compositor-drm.c support for multi-planar buffers

This patch series is also available at:

Cc: Daniel Stone <daniel at fooishbar.org>
Cc: Louis-Francis Ratté-Boulianne <lfrb at collabora.com>
Cc: Benjamin Gaignard <benjamin.gaignard at linaro.org>
Cc: Axel Davy <axel.davy at ens.fr>
Cc: linaro-mm-sig at lists.linaro.org
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Thomas Hellstrom <thellstrom at vmware.com>
Cc: Rob Clark <robdclark at gmail.com>
Cc: George Kiagiadakis <george.kiagiadakis at collabora.com>

George Kiagiadakis (1):
  clients: add simple-dmabuf client

Louis-Francis Ratté-Boulianne (1):
  gl-renderer: introduce struct egl_image

Pekka Paalanen (6):
  protocol: add linux_dmabuf extension (v2)
  dmabuf: implement linux_dmabuf extension
  gl-renderer: add dmabuf import
  compositor-x11: init linux_dmabuf support
  compositor-drm: init linux_dmabuf support
  compositor-drm: dmabuf GBM import

 .gitignore                |   1 +
 Makefile.am               |  25 +-
 clients/simple-dmabuf.c   | 591 ++++++++++++++++++++++++++++++++++++++++++++++
 configure.ac              |  10 +
 protocol/linux-dmabuf.xml | 279 ++++++++++++++++++++++
 src/compositor-drm.c      |  49 +++-
 src/compositor-x11.c      |   7 +
 src/compositor.c          |  28 +++
 src/compositor.h          |   9 +
 src/gl-renderer.c         | 303 +++++++++++++++++++++++-
 src/linux-dmabuf.c        | 497 ++++++++++++++++++++++++++++++++++++++
 src/linux-dmabuf.h        |  84 +++++++
 src/weston-egl-ext.h      |  16 ++
 13 files changed, 1885 insertions(+), 14 deletions(-)
 create mode 100644 clients/simple-dmabuf.c
 create mode 100644 protocol/linux-dmabuf.xml
 create mode 100644 src/linux-dmabuf.c
 create mode 100644 src/linux-dmabuf.h



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