This isn't something that ANV or RADV have cared about in a long time
but, as people bring up new Vulkan drivers, shipping Vulkan 1.0 is still
a thing that happens in Mesa. The common code should also implement the
1.0 rules.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14150>
Before meson 0.48 the cpu_family() would return 'ppc64le' on little
endian power8. In newer versions it returns 'ppc64' and endianness
should be checked with endian()
We now require meson >= 0.53 so we can drop the compatability with
older versions.
The old behavior was added in e430a034b9
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14240>
While our LIFO scheduling mode attempts to optimize for register
pressure, it's often hard for a scheduling algorithm to do better than
the instruction order provided by the shader author. Shader authors
often do perfectly reasonable things like using texture results
immediately after fetching them or constructing texture coordinates
immediately before the texture op. When we throw all the instruction
ordering information away, we loose any help the author may have given
us. By attempting NONE before we fall back to the worst case LIFO mode.
And, yes, I tried this with NONE both before and after LIFO and doing
NONE before LIFO is substantially better, according to shader-db.
total instructions in shared programs: 19673152 -> 19665202 (-0.04%)
instructions in affected programs: 33669 -> 25719 (-23.61%)
helped: 20
HURT: 0
helped stats (abs) min: 15 max: 4609 x̄: 397.50 x̃: 107
helped stats (rel) min: 2.33% max: 67.50% x̄: 14.60% x̃: 9.12%
95% mean confidence interval for instructions value: -867.61 72.61
95% mean confidence interval for instructions %-change: -21.74% -7.46%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 935562500 -> 935020920 (-0.06%)
cycles in affected programs: 18620349 -> 18078769 (-2.91%)
helped: 104
HURT: 48
helped stats (abs) min: 88 max: 60986 x̄: 8031.48 x̃: 3680
helped stats (rel) min: 0.61% max: 51.44% x̄: 14.95% x̃: 8.87%
HURT stats (abs) min: 10 max: 54724 x̄: 6118.62 x̃: 1530
HURT stats (rel) min: 0.13% max: 46.45% x̄: 10.28% x̃: 6.46%
95% mean confidence interval for cycles value: -5724.34 -1401.71
95% mean confidence interval for cycles %-change: -9.86% -4.10%
Cycles are helped.
total spills in shared programs: 12158 -> 10327 (-15.06%)
spills in affected programs: 1831 -> 0
helped: 20
HURT: 0
total fills in shared programs: 14749 -> 12635 (-14.33%)
fills in affected programs: 2114 -> 0
helped: 20
HURT: 0
LOST: 8
GAINED: 649
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
The way the current scheduler loop is implemented, each scheduling pass
starts with what the previous pass had. This means that, if PRE screwed
everything up majorly, PRE_NON_LIFO would have to try to fix it. It
also meant that tiny changes to one pass would affect every later pass.
Instead, reset the order of the instructions before each scheduling
pass. This makes the passes entirely independent of each other.
Shader-db results on Ice Lake:
total instructions in shared programs: 19670486 -> 19670648 (<.01%)
instructions in affected programs: 25317 -> 25479 (0.64%)
helped: 2
HURT: 7
helped stats (abs) min: 4 max: 4 x̄: 4.00 x̃: 4
helped stats (rel) min: 0.07% max: 0.07% x̄: 0.07% x̃: 0.07%
HURT stats (abs) min: 8 max: 70 x̄: 24.29 x̃: 12
HURT stats (rel) min: 0.41% max: 4.95% x̄: 1.47% x̃: 0.87%
95% mean confidence interval for instructions value: -1.28 37.28
95% mean confidence interval for instructions %-change: -0.04% 2.30%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 935535948 -> 935490243 (<.01%)
cycles in affected programs: 421994824 -> 421949119 (-0.01%)
helped: 1269
HURT: 879
helped stats (abs) min: 1 max: 12008 x̄: 259.38 x̃: 52
helped stats (rel) min: <.01% max: 28.02% x̄: 1.12% x̃: 0.14%
HURT stats (abs) min: 1 max: 29931 x̄: 322.46 x̃: 20
HURT stats (rel) min: <.01% max: 32.17% x̄: 1.74% x̃: 0.22%
95% mean confidence interval for cycles value: -71.37 28.81
95% mean confidence interval for cycles %-change: -0.11% 0.21%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 12403 -> 12430 (0.22%)
spills in affected programs: 1355 -> 1382 (1.99%)
helped: 2
HURT: 7
total fills in shared programs: 15128 -> 15182 (0.36%)
fills in affected programs: 3294 -> 3348 (1.64%)
helped: 2
HURT: 7
LOST: 21
GAINED: 28
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
This reverts commit ba2fa1ceaf. Doing
optimizations after scheduling but before RA means doing them in the
middle of the scheduling loop which introduces additional dependencies
between one scheduling iteration and the next. That won't work if we
want to make the scheduling modes independent, at least not unless we
have some way of fully cloning the IR.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
brw_find_next_block_end() scans through the instructions to find the end
of the block. We were calling it for every instruction in the program
which is, if you have a single basic block, makes the whole mess a nice
clean O(n^2) when it really doesn't need to be. Instead, only call
brw_find_next_block_end() as-needed. This brings it back to O(n) like
it should have been.
This cuts the runtime of the following Vulkan CTS on my SKL box by 5%
from 1:51 to 1:45: dEQP-VK.ssbo.phys.layout.random.16bit.scalar.13
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
Now that we're being conservative in the pass, it's easy to tell when it
makes progress and we can put it in the OPT() macro. This way, we get
nice INTEL_DEBUG=optimizer dumps for it. While we're here, fix the
header comment which is massively out-of-date.
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
Instead of modifying every single instruction, keep track of which VGRFs
are actually split in a bit-set, and only modify the instructions that
actually touch split regs.
This cuts the runtime of the following Vulkan CTS on my SKL box by 45%
from 3:21 to 1:51: dEQP-VK.ssbo.phys.layout.random.16bit.scalar.13
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13734>
SPV_EXT_demote_to_helper_invocation added OpDemoteToHelperInvocation
operation to turn an invocation into a helper invocation, but the
value of HelperInvocation (a builtin from Input storage class)
couldn't be modified dynamically without breaking compatibility.
For the extension the operation OpIsHelperInvocation was added to get
the dynamic value.
For SPIR-V 1.6, the demote operation was promoted, but now to get the
dynamic value the shader must issue a load to HelperInvocation with
Volatile memory access semantics.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14209>
These can't be encoded on GFX6/7, and combining these additions causes
CTS failures on GFX10.3.
I think the low 2 MSBs are ignored before the addition, not after, so
load(a + 3, 0) becomes load(a, 3), which is the same as load(a, 0).
No fossil-db changes.
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13755>
Two 64-bit shifts and an addition are usually faster than the several
multiplications nir_lower_int64 creates.
No fossil-db changes.
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14227>
Make sure to clamp the global scissor to the render area.
This fixes dEQP-VK.draw.dynamic_rendering.*oversized.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14170>
Putting it in the pipeline is a bit of a lie. We no longer need it for
nir_lower_wpos_center. The only other user is pipeline_has_coarse_pixel
and that is used to build the shader key which we construct before we've
processed any NIR so we don't have accurate information at that time
anyway. Instead, look at ms_info->sampleShadingEnable directly in
pipeline_has_coarse_pixel and trust the back-end to deal with disabling
coarse when we need per-sample dispatch.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14198>
This rolls compute_sample_position into emit_samplepos_setup, its only
caller, by using a loop instead of calling it twice. We also
early-return for the !persample_dispatch case instead of doing it as
part of the sample calculation. This means that we don't call
fetch_payload_reg() to get sample_pos_reg unless we're actually going to
use it so the function is safe to call even if we haven't set up
sample_pos_reg. This will be important for the next commit.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14198>
This function is called on load/store_input/output. It makes no sense
for it to get a SYSTEM_VALUE enum. This only doesn't explode because
SYSTEM_VALUE_PRIMITIVE_ID happens to be below VARYING_SLOT_VAR0 so it
doesn't interact with any actual varyings. The next commit is going to
add another system value which will push SYSTEM_VALUE_PRIMITIVE_ID up by
one so it will equal VARYING_SLOT_VAR0 and then the first FS input will
always get smashed to flat which isn't what we want.
Fixes: b59bb9c07a ("radeonsi: force flat for PrimID early in si_nir_scan_shader")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14198>
Jason Ekstrand
Jesse Natalie
Simon Ser
Dave Airlie
Kostiantyn Lazukin
Thomas H.P. Andersen
Caio Oliveira
Eric Engestrom
Rhys Perry
Bas Nieuwenhuizen
Emma Anholt
Samuel Pitoiset
Pierre-Eric Pelloux-Prayer