[Mesa-dev] [PATCH 00/17] Add support for GL_EXT_semaphore

[Andres Rodriguez]

This series adds radeonsi support for GL_EXT_semaphore.

GL_EXT_semaphore is used by steam's vrclient to synchronize access to shared
surfaces (vulkan <-> gl interop). It allows our gl vrclients to enqueue their
framebuffer surface without waiting for a glFinish().

If anyone has any suggestions on improvements for the implicit flush added in
patch 9 please let me know. Either a way to remove it, or a way to move it to
a codepath that is a bit more specific to radeonsi.

Test results for this series (pretty alpha quality auto testing):
https://lostgoat.me/gpuci/jenkins/blue/organizations/jenkins/amdgpu-reviews/detail/amdgpu-reviews/184/pipeline

Test results for each individual patch can also be found here (see 'Related
Changes' section):
https://gerrit.lostgoat.me/#/c/454/

And here is a baseline for test results for comparison:
https://lostgoat.me/gpuci/jenkins/blue/organizations/jenkins/amdgpu-master/detail/amdgpu-master/1269/tests

Tests include Vulkan CTS and piglit on Kaveri and Polaris 10.

I just kicked off the tests, so they might still show in a queued/in progress
state for a few hours. Hopefully my ryzen server and my test slaves survive the
unsupervised effort (*fingers crossed it doesn't catch fire while I sleep*).

Patches 1-12 add support for semaphore wait/signal/import
Patch 13 implements buffer/texture barriers
Patches 14-16 implement layout transitions
Patch 17 exposes the extension

Andres Rodriguez (17):
  gallium: introduce PIPE_CAP_SEMAPHORE
  mesa/st: expose EXT_semaphore and EXT_semaphore_fd
  mesa: add support for semaphore object creation/import/delete
  mesa: add semaphore parameter stub
  gallium: introduce semaphore object
  u_threaded_context: add support for semaphore wait/signal
  mesa/st: add support for semaphore object create/import/delete
  mesa: add support for semaphore object signal/wait
  mesa/st: add support for waiting for semaphore objects
  mesa: minor tidy up for memory object error strings
  winsys/amdgpu: add support for syncobj signaling
  radeonsi: implement semaphore operations
  mesa: implement buffer/texture barriers for semaphore wait/signal
  gallium: add transition_resource call
  mesa/st: hook up resource transitions for semaphore calls
  radeonsi: implement pipe transition_resource callback
  radeonsi: advertise support for GL_EXT_semaphore

 src/gallium/auxiliary/util/u_threaded_context.c    |  52 ++++
 .../auxiliary/util/u_threaded_context_calls.h      |   1 +
 src/gallium/docs/source/screen.rst                 |   1 +
 src/gallium/drivers/ddebug/dd_context.c            |  23 ++
 src/gallium/drivers/ddebug/dd_screen.c             |  25 ++
 src/gallium/drivers/etnaviv/etnaviv_screen.c       |   1 +
 src/gallium/drivers/freedreno/freedreno_screen.c   |   1 +
 src/gallium/drivers/i915/i915_screen.c             |   1 +
 src/gallium/drivers/llvmpipe/lp_screen.c           |   1 +
 src/gallium/drivers/nouveau/nv30/nv30_screen.c     |   1 +
 src/gallium/drivers/nouveau/nv50/nv50_screen.c     |   1 +
 src/gallium/drivers/nouveau/nvc0/nvc0_screen.c     |   1 +
 src/gallium/drivers/r300/r300_screen.c             |   1 +
 src/gallium/drivers/r600/r600_pipe.c               |   1 +
 src/gallium/drivers/radeon/r600_pipe_common.c      |  52 ++++
 src/gallium/drivers/radeon/r600_pipe_common.h      |   5 +
 src/gallium/drivers/radeon/radeon_winsys.h         |  12 +
 src/gallium/drivers/radeonsi/si_blit.c             |  11 +
 src/gallium/drivers/radeonsi/si_pipe.c             |   3 +
 src/gallium/drivers/softpipe/sp_screen.c           |   1 +
 src/gallium/drivers/svga/svga_screen.c             |   1 +
 src/gallium/drivers/swr/swr_screen.cpp             |   1 +
 src/gallium/drivers/trace/tr_context.c             |  36 +++
 src/gallium/drivers/trace/tr_screen.c              |  39 +++
 src/gallium/drivers/vc4/vc4_screen.c               |   1 +
 src/gallium/drivers/virgl/virgl_screen.c           |   1 +
 src/gallium/include/pipe/p_context.h               |  36 +++
 src/gallium/include/pipe/p_defines.h               |  12 +
 src/gallium/include/pipe/p_screen.h                |  22 ++
 src/gallium/include/pipe/p_state.h                 |   8 +
 src/gallium/winsys/amdgpu/drm/amdgpu_cs.c          |  81 +++++-
 src/gallium/winsys/amdgpu/drm/amdgpu_cs.h          |   4 +
 src/mesa/Makefile.sources                          |   2 +
 src/mesa/drivers/common/driverfuncs.c              |   3 +
 src/mesa/main/dd.h                                 |  58 +++++
 src/mesa/main/extensions_table.h                   |   2 +
 src/mesa/main/externalobjects.c                    | 274 +++++++++++++++++++--
 src/mesa/main/externalobjects.h                    |  34 ++-
 src/mesa/main/mtypes.h                             |   9 +
 src/mesa/main/shared.c                             |  17 ++
 src/mesa/meson.build                               |   2 +
 src/mesa/state_tracker/st_cb_semaphoreobjects.c    | 164 ++++++++++++
 src/mesa/state_tracker/st_cb_semaphoreobjects.h    |  25 ++
 src/mesa/state_tracker/st_context.c                |   2 +
 src/mesa/state_tracker/st_extensions.c             |   2 +
 45 files changed, 1012 insertions(+), 19 deletions(-)
 create mode 100644 src/mesa/state_tracker/st_cb_semaphoreobjects.c
 create mode 100644 src/mesa/state_tracker/st_cb_semaphoreobjects.h

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2.9.3