[Mesa-dev] [PATCH 0/3] st/mesa, radeonsi: some MemoryBarrier fixes

[Nicolai Hähnle]

Hi,
  
these patches apply on top of my ARB_shader_image_load_store series. Together,
they fix a few remaining fails with piglit's arb_shader_image_load_store-host-mem-barrier.
You can see them in context at https://cgit.freedesktop.org/~nh/mesa/log/?h=ssbo

The basic assumption for how barrier bits are translated is that each Gallium
object / binding point has its own PIPE_BARRIER_* bit, but the driver will
automatically do the necessary invalidations/flushes for transfers and
blit-type operations, as well as when the framebuffer state is changed.

This is still very tricky stuff to get right, but at least I think it's
shaping up nicely for radeonsi, as evidenced by the fact that the
host-mem-barrier test passes (and the control subtests also show that
what we're doing here isn't just a no-op). Please review!

Thanks,
Nicolai
---
 src/gallium/drivers/radeonsi/si_state.c      |  7 +++--
 src/gallium/include/pipe/p_defines.h         |  1 +
 .../state_tracker/st_cb_texturebarrier.c     | 25 +++++++++++++++++-
 3 files changed, 30 insertions(+), 3 deletions(-)