This avoids lowering of CS system values by GLSL (configured by state
tracker). In i965 we don't use that lowering, and we also shouldn't
need that in Iris.
Using it cause some unnecessary round trip between values, e.g.:
shader uses gl_LocalInvocationIndex, GLSL rewrites it in terms of
gl_LocalInvocationID, then driver rewrites those in terms of
gl_LocalInvocationIndex again. Copy propagation can make some of
those go away, but not all as seen below.
Intel SKL shader-db results:
total instructions in shared programs: 15595189 -> 15594556 (<.01%)
instructions in affected programs: 74880 -> 74247 (-0.85%)
helped: 81
HURT: 4
helped stats (abs) min: 2 max: 172 x̄: 7.88 x̃: 4
helped stats (rel) min: 0.19% max: 5.66% x̄: 1.71% x̃: 1.23%
HURT stats (abs) min: 1 max: 2 x̄: 1.25 x̃: 1
HURT stats (rel) min: 0.45% max: 1.65% x̄: 0.76% x̃: 0.46%
95% mean confidence interval for instructions value: -11.56 -3.34
95% mean confidence interval for instructions %-change: -1.91% -1.28%
Instructions are helped.
total loops in shared programs: 4831 -> 4831 (0.00%)
loops in affected programs: 0 -> 0
helped: 0
HURT: 0
total cycles in shared programs: 372136618 -> 372145628 (<.01%)
cycles in affected programs: 9218230 -> 9227240 (0.10%)
helped: 131
HURT: 86
helped stats (abs) min: 1 max: 798 x̄: 39.79 x̃: 12
helped stats (rel) min: <.01% max: 6.75% x̄: 0.42% x̃: 0.13%
HURT stats (abs) min: 2 max: 2442 x̄: 165.38 x̃: 6
HURT stats (rel) min: <.01% max: 20.83% x̄: 0.74% x̃: 0.12%
95% mean confidence interval for cycles value: -2.07 85.11
95% mean confidence interval for cycles %-change: -0.22% 0.30%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 11956 -> 11950 (-0.05%)
spills in affected programs: 77 -> 71 (-7.79%)
helped: 3
HURT: 0
total fills in shared programs: 25619 -> 25549 (-0.27%)
fills in affected programs: 593 -> 523 (-11.80%)
helped: 4
HURT: 0
LOST: 0
GAINED: 0
Total CPU time (seconds): 1695.69 -> 1706.03 (0.61%)
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Tells whether or not the driver can handle gl_LocalInvocationIndex and
gl_GlobalInvocationID. If not supported (the default), state tracker
will lower those on behalf of the driver.
v2: Add case to u_screen.c. (Anholt)
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Modern DXVK requires event support [1], but looks like it only
uses vkCmdSetEvent() + vkGetEventStatus(). So we can just
borrow the relevant code from gen8, leaving CmdWaitEvents still
unimplemented.
[1] 8c3900c533
v2: Also move CmdWaitEvents into genX_cmd_buffer.c (Jason)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
The other sources of the bcsel behave like the sources of an and or
other logical operation. However, source zero behaves differently.
It is evaluated as a Boolean, so it needs to be resolved.
No shader-db changes, but the tests mentioned in the bug get a couple
instructions added back.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110857
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Flip the FD_MESA_DEBUG flag to a disable rather than enable, drop the
obsolete comment (and bonus, drop unused softpin debug flag)
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This is slightly annoying because it *mostly* works.. but we have some
issues to sort out about how to blit z24s8/x24s8/z24x8 with UBWC before
we can enable UBWC by default. For now it is a step forward to at least
enable it for non-z/s while we figure out how to blit z24s8+UBWC.
(The basic issue is that pretending z24s8 is an equivalently sized rgba
format for the purpose of blitting falls apart when UBWC is in the
picture.)
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
No functional change, the registers have the same layout as MRT flags
pitch reg.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
An older blob claims to support UBWC w/ r32ui an r32i, but not r32f.
Results from deqp indicate that it doesn't work with r32ui and r32i.
This *could* also just mean that use as "IBO" (image) is more limited
than as texture, although blob also doesn't seem to bother to try to use
UBWC with images at all, so hard to know for sure.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
We'll need this for a few edge cases, like image/sampler view that uses
a format that UBWC does not support with a resource originally created
in a format that UBWC does support.
NOTE we *could* in some cases do an in-place uncompress. But that has
a couple potential sharp edges:
1) the uncompressed buffer could have different layout, ie. a5xx
with meta and pixel data of layers/levels interleaved.
2) if it comes mid-batch, it would force flush, or somehow fixing
up cmdstream for draws already emitted. But with the resource
shadowing approach we can rely on batch re-ordering to avoid
splitting things.. older draws see the older compressed version,
newer draws see the new uncompressed version of the rsc.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
When uncompressing a UBWC buffer, we don't want to discard anything.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
It doesn't come up yet, as so far we only hit this path with linear
buffers. But it will when we start re-using the shadow path for
uncompressing UBWC buffers.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
To uncompress UBWC, I want to re-use the shadow path, but we'll need a
way to request that the new buffer is not compressed.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
A newly created resource can be regarded as idle. We don't care if
the RESOURCE_CREATE command has been retired, unless it is used for
fencing.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
The round trip to the kernel is expensive. Add a local cache to
avoid it when possible.
There is a race condition when two contexts access the same resource
at the same time (e.g., ctx1 submits a cmdbuf that accesses a
resource while ctx2 maps the resource). But that is probably an app
bug in the first place.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
Helpers to work with resource list. virgl_drm_release_all_res is
removed.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
We should not reuse a resource for other purposes when it can still
be accessed by another process or device.
Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Reviewed-by: Alexandros Frantzis <alexandros.frantzis@collabora.com>
This seems to be a performance win, but more rigorous testing is
necessary to figure out the exact circumstances when this is good/bad.
Incidentally, this fixes non-aligned ZS.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
For constant LODs/biases, we can use an immediate embedded in the
texture (already decoded); for non-constant, we have to use a register
squeezed into the usual immediate field, which is decoded here.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
It's not at all clear why this work for texelFetch but not texture.
Maybe the top bits are dual-purpose on other texturing ops...?
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This is clear for texelFetch, hence the confusion with Bifrost's filter
field, but it's much more general in reality.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
With an extra flag, we're able to do a perspective division "for free"
while loading a varying.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This patch identifies the two modes of offsets in a texture instruction
(immediate and register, disambiguated by the bit-once-known-as
"has_offset") and implements disassembly for both.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This eliminates some unknowns, clarifies 3D textures, and will maybe
help with array/shadow textures?
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Marek Olšák
Caio Marcelo de Oliveira Filho
Ville Syrjälä
Ian Romanick
Rob Clark
Chia-I Wu
Alyssa Rosenzweig
Juan A. Suarez Romero