Because 0 is no longer a recognizable value (it's NEVER, which isn't a
good default), we add an emit_alpha_test bool to tell the back-end when
to bother alpha testing. This lets us only touch crocus with the
change.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14157>
The current packed dispatch assumptions for fragment shaders seem to
be the reason that the fs-readFirstInvocation-uint-loop Piglit
test-case for the ARB_shader_ballot extension fails on DG2 in
combination with the patches in this series that enable pixel pipe
hashing (thanks Jordan for reporting the regression). I've confirmed
that the brw_fs_test_dispatch_packing() test fails on DG2 hardware for
fragment shaders, while it succeeds for other shader stages,
indicating that the PSD hardware no longer guarantees packed dispatch.
Disable it.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13569>
Adreno GPUs has native instruction for unsigned and mixed dot_4x8 but
not signed dot product.
Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13986>
When we lower SPIR-V to NIR for textures in vtn_handle_texture, we only
bump the number of coordinate components when the op is not a lod query.
Update the assert to take this into account.
This fixes:
- dEQP-VK.robustness.robustness2.bind.template.r32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.r32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.r32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.r32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.r32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.r32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rg32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.bind.template.rgba32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.r32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rg32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32f.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32f.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32i.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32i.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32ui.dontunroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
- dEQP-VK.robustness.robustness2.push.notemplate.rgba32ui.unroll.nonvolatile.sampled_image.no_fmt_qual.null_descriptor.samples_1.cube_array.frag
Fixes: 231337a1 ("intel/fs/xehp: Assert that the compiler is sending all 3 coords for cubemaps.")
Signed-off-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13925>
Without this change, test_fs_scoreboard.cpp does not compile on GCC 7
due to the use of C99 initializers in a C++ source file.
Fixes: c847bfaaf5 ("intel/fs/gen12: Add tests for scoreboard pass")
Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14349>
These are lowered by crocus in the frontend, the key
entries are still used.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14202>
Crocus lowers this in the frontend, they key member is still used
but reset prior to backend.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14202>
There's nothing in bspec that would suggest this is still needed.
It only affected gfx 9 and 10.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14280>
This adds a missing CFG edge that represents a possible physical
control flow path the EU might take under some conditions which isn't
part of the logical CFG of the program. This possibility shouldn't
have led to problems on platforms prior to Gfx12, since the missing
control flow edge cannot possibly influence liveness intervals.
However on Gfx12+ it becomes the compiler's responsibility to resolve
data dependencies across instructions, and the missing physical
control flow paths may lead to a WaR data hazard currently not visible
to the software scoreboard pass, which could lead to data corruption.
Worse, the possibility for this path to be taken by the EU increases
on Gfx12+ due to a hardware bug affecting EU fusion -- However the
same physical path can be potentially taken on earlier platforms as
well, so this patch extends the CFG on all platforms for consistency,
even though the lack of this edge shouldn't lead to any functional
issues on platforms earlier than Gfx12. There are no shader-db
changes on earlier platforms, so there seems to be no disadvantage
from using the same CFG representation as on later platforms.
This issue has ben reported on TGL with the following conformance
test, thanks to Ian for bringing the FULSIM dependency check warning
to my attention:
dEQP-VK.graphicsfuzz.spv-stable-pillars-volatile-nontemporal-store
Fixes: 4d1959e693 ("intel/cfg: Represent divergent control flow paths caused by non-uniform loop execution.")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/4940
Reported-by: Tapani Pälli <tapani.palli@intel.com>
Reported-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14248>
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>
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 is by far the more common style in Mesa. It also gives a cue that
e.g. num_dependency_ids is a fixed definition rather than some kind of
local variable maintaining a count.
While hre, we also rename the enums to have full prefixes to prepare for
a future where we use them in multiple files for future backend work.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14182>
This replaces a bunch of uses of the GLSL IR ir_texture_opcode enum with
the backend opcode, in preparation for removing it altogether.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14191>
Having an integer destination type instead of a float destination type
confuses the SWSB code. This causes problems on some Intel GPUs. Fix
this by using the correct type in the destination of the F32TOF16
opcode.
Gfx7 doesn't have the HF type, so continue to emit W on that platform.
The assertions in brw_F32TO16 (brw_eu_emit.c) are updated to reflect
this. In scalar mode, UD is never emitted as a destination type for
this opcode, so remove it from the allowed types in the assertion.
I also condidered doing something like de55fd358f ("intel/fs/xehp:
Teach SWSB pass about the exec pipeline of
FS_OPCODE_PACK_HALF_2x16_SPLIT."), but Curro recommended that just using
the correct types is a better fix. I agree.
v2: Add missing changes to fs_generator::generate_pack_half_2x16_split.
I'm not sure how I (and the Intel CI) missed that the first time. :(
v3: Fix copy-and-paste issue in the v2 fix. Noticed by Tapani.
Reviewed-by: Francisco Jerez <currojerez@riseup.net> [v1]
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14181>
Based on Rafael's:
* "nir/lower_tex: Add option to lower offset for tg4 too."
* "intel/compiler: Lower offsets for tg4 on gen9+."
* "WIP: Do not lower basic offsets."
* "WIP: intel/compiler: Enable lowering offsets restriction."
But, with these changes:
* Fixed range checking to be signed 4 bits
* Converted to filter
* Apply only to gfx12.5+
* Use nir_src_is_const / nir_src_comp_as_int (s-b Jason)
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14142>
Previously a predicated BREAK that appeared immediately before the WHILE
would get merged into the WHILE. This doesn't work if other flow
control (e.g., a CONT) can transfer directly to the WHILE.
On Intel platforms, this fixes the CTS test
dEQP-VK.graphicsfuzz.stable-binarysearch-tree-nested-if-and-conditional.
No shader-db changes on any Intel platform.
When this commit was first created (over a month before it is going to
land), there were some regressions that were prevented by other commits
in MR !13095. That does not appear to be the case now, so I don't know
what changed. Basically, the treatment of discard as a combination of
demote and terminate causes additional continues in some loops, and
those continues trigger this bug. The other commits from that MR
prevent those continues from being generated in the first place.
All Intel platforms had simlar fossil-db results. (Ice Lake shown)
Instructions in all programs: 144419989 -> 144419995 (+0.0%)
SENDs in all programs: 6947332 -> 6947332 (+0.0%)
Loops in all programs: 38277 -> 38277 (+0.0%)
Spills in all programs: 204075 -> 204075 (+0.0%)
Fills in all programs: 319480 -> 319480 (+0.0%)
A few shaders in Doom 2016 were hurt by one instruction each. It seems
likely that these shaders would have experienced at least some
mis-rendering.
Closes: #4213
Fixes: d13bcdb3a9 ("i965/fs: Extend predicated break pass to predicate WHILE.")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14128>
This virtual instruction is translated into multiple half float
physical instructions, even though its destination is typically of
integer type, which prevents the software scoreboard pass from
inferring the correct execution pipeline for the virtual instruction
on XeHP+ platforms. Teach the SWSB lowering pass about this
inconsistency between the IR and physical instruction types.
Fixes among other tests:
dEQP-GLES31.functional.shaders.builtin_functions.pack_unpack.packhalf2x16_compute
Fixes: d4537770bb ("intel/fs: Add helper functions inferring sync and exec pipeline of an instruction.")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5685
Reported-by: Tapani Pälli <tapani.palli@intel.com>
Tested-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14002>
include it explicitly in the correct places
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14104>
This adds a bunch of other headers in, and adds mtypes.h to iris
for perf query object.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14104>
Use the same URB access helpers that were added for Task Output. The
Arrayed I/O (per-primitive and per-vertex) is handled by applying the
pitch from the MUE layout into the NIR intrinsics and including the
non-arrayed offset on top of it. After that, the index src can be
used directly for lowering.
Because we keep around the non-arrayed offset AND the pitch is
aligned, we can identify cases where the access is indirect but
guaranteed to be aligned, and dispatch a single message. Added a TODO
to explore that later.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13661>
Implement the output written by the task *workgroup* and available to
all the mesh *workgroups* dispatched from that task. We currently
ignore any layout annotations (since they are not really testable) and
produce a (packed) layout ourselves.
The URB messages are only SIMD8, so for larger SIMDs, the functions
will produce multiple messages. Making this lowering here instead of
the generic lower_simd_width() since it is not just a matter of
zip/unzip, e.g. the offset must be adjusted.
Indirect writes/reads are implemented by handling one component at a
time and using the PER_SLOT variant of the messages.
Note that VK_NV_mesh_shader allows reading outputs, so add support for
that as well.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13661>
