iris_bufmgr allocates addresses across the entire screen, since buffers
may be shared between multiple contexts. There used to be a single
special address, IRIS_BINDER_ADDRESS, that was per-context - and all
contexts used the same address. When I moved to the multi-binder
system, I made a separate memory zone for them. I wanted there to be
2-3 binders per context, so we could cycle them to avoid the stalls
inherent in pinning two buffers to the same address in back-to-back
batches. But I figured I'd allow 100 binders just to be wildly
excessive/cautious.
What I didn't realize was that we need 2-3 binders per *context*,
and what I did was allocate 100 binders per *screen*. Web browsers,
for example, might have 1-2 contexts per tab, leading to hundreds of
contexts, and thus binders.
To fix this, we stop allocating VMA for binders in bufmgr, and let
the binder handle it itself. Binders are per-context, and they can
assign context-local addresses for the buffers by simply doing a
ringbuffer style approach. We only hold on to one binder BO at a
time, so we won't ever have a conflicting address.
This fixes dEQP-EGL.functional.multicontext.non_shared_clear.
Huge thanks to Tapani Pälli for debugging this whole mess and
figuring out what was going wrong.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
We use > for IRIS_MEMZONE_DYNAMIC because IRIS_BORDER_COLOR_POOL_ADDRESS
lives at the very start of that zone. However, IRIS_MEMZONE_SURFACE and
IRIS_MEMZONE_BINDER are normal zones. They used to be a single zone
(surface) with a single binder BO at the beginning, similar to the
border color pool. But when I moved us to multiple binders, I made them
have a real zone (if a small one). So both zones should use >=.
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
INTEL_DEBUG=reemit was breaking streamout tests, by re-emitting
3DSTATE_SO_BUFFER commands that tell the HW to zero the SO write
offsets. We would need to alter them to use 0xFFFFFFFF for the offset.
Also, have each upload function only flag bits relevant to its own
pipeline.
I think this was an attempt to work around various sample mask bugs I
had early on. It's not correct. A sample mask of 0 is legal and means
to disable all samples.
Fixes dEQP-GLES31.functional.texture.multisample.*.*sample_mask*
I had a hack in place earlier to pass the query type as q->index
for the regular statistics query, but we ended up adjusting the
interface and adding a new query type. Use that instead, fixing
pipeline statistics queries since the rebase.
We were dividing by 4 in calculate_result_on_gpu(), and also in
iris_get_query_result(). We should stop doing the latter, and instead
divide by 4 in calculate_result_on_cpu() as well.
Otherwise, if snapshots were available, and you hit the
calculate_result_on_cpu() path, but requested it be written to a QBO,
you'd fail to get a divide.
This is an awkward corner case. We create batches in order, each of
which creates and pins a BO. The other batches may not be set up yet,
so it may not be safe to ask whether they reference a BO.
Just avoid this for now. We could avoid it for other context-local BOs
too, but we currently don't have a flag for that (and I'm not certain
whether it's worth it).
Various places in the transfer code need to know whether they must
read the existing resource's values. Rather than checking both flags
everywhere, just make PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE also flag
PIPE_TRANSFER_DISCARD_RANGE - if we can discard everything, we can
discard a subrange, too.
Obviously, we can do better for PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE,
but eventually u_threaded_context should handle swapping out buffers
for new idle buffers, anyway. In the meantime, this is at least better.
BLORP uses the render engine to write to buffers, and we need to flush
that data out to the actual surface (finishing the write). Then, the
rest of this function invalidates any caches that might have stale data
which needs to be refetched.
I don't know if this is required - surprisingly, I haven't seen it
matter - but I'd like to use it for multi-slice transfer maps. We may
as well do the right thing.
There are a variety of ways to fix this, many of which are simple, but
I could use some advice on which ones other people prefer, and so we'll
punt until after the holidays.
We were relying on CSE/GVN/etc to coalesce all intrinsics that load the
same value, but that's a bad idea. We might have a couple intrinsics
that reload the same value. If so, we only want to set up the uniform
on the first one we see.
System values are built-in uniforms. We set them up as UBO values, and
might pull or push them. UBO push analysis will take care of that. We
only want to enable push constants if there's an actual range being
pushed. Otherwise, we might get into a scenario where 3DSTATE_PS
enables push constants but 3DSTATE_CONSTANT_PS isn't pushing anything.
This fixes GPU hangs in Broadwell image load store tests which have
unused image param system values but no other uniforms. (We shouldn't
be making those anyway, but that's a separate fix...)
cso_fb->layers is only valid for no-attachment framebuffers. Use the
helper function to get the real value, then stash it so we don't have
to call the helper function on the old value for comparison, or at draw
time for Force Zero RTA Index setting.
This fixes Force Zero RTA Index being set even when attempting layered
rendering.
Both 'z' and 'depth' are counted in slices, according to the Gallium
docs (context.rst). In our temporary memory, we allocate `box.depth`
slices, so we need to rebase the starting slice (box.z) down to 0,
and back again when writing on unmap.
There's nothing strange about cubes here.
Gen9-10 have fewer than 4 subslices per slice, so they need this to be
rounded up. Gen11 isn't documented as needing this hack, and it can
also have more than 4 subslices, so the hack actually can break things.
Fixes tests/spec/arb_enhanced_layouts/execution/component-layout/
sso-vs-gs-fs-array-interleave
Kenneth Graunke
Dave Airlie
Rhys Kidd