[PATCH RFC 0/4] Add pixman renderer to support pure software rendering

[Vasily Khoruzhick]

These patches add support for software rendering to weston by
introducing new renderer and adding MIT-SHM support to x11 backend.
1st and 2nd patches aren't related to pixman renderer,
but without them screenshoter will not work properly when pixman
renderer is active.

 configure.ac          |   2 +-
 src/Makefile.am       |   1 +
 src/compositor-x11.c  | 308 ++++++++++++++++++++++++++++++++++++++--
 src/pixman-renderer.c | 378 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/pixman-renderer.h |  39 ++++++
 src/screenshooter.c   |   4 +-
 6 files changed, 720 insertions(+), 12 deletions(-