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22 commits

Author SHA1 Message Date
Timur Kristóf
212f183c1f ac/nir: Remove now-superfluous ac_nir_lower_tess_to_const. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13155>
 2022-05-10 17:16:03 +00:00
Timur Kristóf
719678f891 ac/nir: Add ac_nir_load_arg helper for shader arguments. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13155>
 2022-05-10 17:16:03 +00:00
Marek Olšák
11c28d9798 ac: add ac_nir_optimize_outputs, a NIR version of ac_optimize_vs_outputs 
ac_optimize_vs_outputs is an LLVM IR pass, and it will be replaced by this.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14414>
 2022-04-22 22:21:11 +00:00
Rhys Perry
61ac5acca3 radv,ac/nir: lower global access to _amd global access intrinsics 
fossil-db (Sienna Cichlid):
Totals from 400 (0.30% of 134621) affected shaders:
VGPRs: 18696 -> 18688 (-0.04%)
CodeSize: 2031348 -> 1946640 (-4.17%)
Instrs: 374703 -> 360226 (-3.86%)
Latency: 4200727 -> 4108628 (-2.19%); split: -2.20%, +0.01%
InvThroughput: 1059935 -> 1029441 (-2.88%); split: -2.88%, +0.00%
VClause: 5777 -> 5771 (-0.10%)
SClause: 11890 -> 10891 (-8.40%); split: -8.57%, +0.17%
Copies: 34035 -> 33259 (-2.28%); split: -2.98%, +0.70%
Branches: 11108 -> 11100 (-0.07%); split: -0.08%, +0.01%
PreSGPRs: 15999 -> 15942 (-0.36%); split: -0.44%, +0.08%
PreVGPRs: 16994 -> 16970 (-0.14%)

fossil-db (Polaris10):
Totals from 400 (0.29% of 135668) affected shaders:
SGPRs: 23799 -> 22919 (-3.70%); split: -4.30%, +0.61%
VGPRs: 18480 -> 18472 (-0.04%)
CodeSize: 2090316 -> 2041592 (-2.33%)
Instrs: 395461 -> 385747 (-2.46%); split: -2.46%, +0.00%
Latency: 5045768 -> 5020196 (-0.51%); split: -0.53%, +0.02%
InvThroughput: 2694320 -> 2689886 (-0.16%); split: -0.23%, +0.07%
VClause: 5982 -> 5968 (-0.23%)
SClause: 12064 -> 10823 (-10.29%); split: -10.33%, +0.04%
Copies: 48233 -> 48322 (+0.18%); split: -0.47%, +0.65%
PreSGPRs: 16409 -> 16358 (-0.31%); split: -0.39%, +0.08%

fossil-db (Pitcairn):
Totals from 400 (0.29% of 135668) affected shaders:
SGPRs: 22431 -> 22215 (-0.96%); split: -2.60%, +1.64%
VGPRs: 18776 -> 18560 (-1.15%); split: -1.21%, +0.06%
CodeSize: 2104440 -> 2017708 (-4.12%)
MaxWaves: 2363 -> 2367 (+0.17%)
Instrs: 413099 -> 397446 (-3.79%)
Latency: 5507707 -> 5450251 (-1.04%); split: -1.12%, +0.07%
InvThroughput: 2838867 -> 2786903 (-1.83%); split: -1.83%, +0.00%
VClause: 10334 -> 10097 (-2.29%)
SClause: 12346 -> 11005 (-10.86%); split: -10.89%, +0.02%
Copies: 54034 -> 52065 (-3.64%); split: -3.99%, +0.35%
PreSGPRs: 17916 -> 17857 (-0.33%); split: -0.40%, +0.07%
PreVGPRs: 16917 -> 16893 (-0.14%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14124>
 2022-04-13 16:23:35 +00:00
Marek Olšák
116a05c721 ac: move ac_exp_param.h to ac_nir.h 
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14266>
 2022-01-05 12:46:31 +00:00
Timur Kristóf
7aa42e023a ac/nir/ngg: Lower NV mesh shaders to NGG semantics. 
Lower mesh shader outputs to shared memory.

At the end of the shader, read the outputs from shared memory
and export their values as NGG expects.

We allocate separate shared memory (LDS) areas for per-vertex,
per-primitive outputs, primitive indices, primitive count.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13580>
 2021-12-31 13:05:09 +00:00
Samuel Pitoiset
b52aaea630 radv: remove unnecessary ac_nir_ngg_config output struct 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13134>
 2021-10-04 08:55:19 +00:00
Samuel Pitoiset
52e91f7640 radv: move ngg passthrough determination earlier 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13134>
 2021-10-04 08:55:19 +00:00
Samuel Pitoiset
2ce78a30ff move: move ngg lds bytes determination earlier 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13134>
 2021-10-04 08:55:19 +00:00
Samuel Pitoiset
90858dd718 radv: move ngg early prim export determination earlier 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13134>
 2021-10-04 08:55:19 +00:00
Rhys Perry
24501b5452 radv: move ngg culling determination earlier 
Co-Authored-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13134>
 2021-10-04 08:55:19 +00:00
Timur Kristóf
a7f2faea46 ac/nir: Emit edge flag instructions conditionally. 
They are not needed by RADV but will be needed by RadeonSI.

Fossil DB results on Sienna Cichlid (with NGGC on):
Totals from 56917 (44.24% of 128647) affected shaders:
VGPRs: 1982664 -> 1975936 (-0.34%); split: -0.43%, +0.09%
CodeSize: 152790880 -> 149510316 (-2.15%); split: -2.15%, +0.00%
MaxWaves: 1617984 -> 1621900 (+0.24%)
Instrs: 29272825 -> 28907038 (-1.25%); split: -1.26%, +0.01%
Latency: 128744182 -> 127565678 (-0.92%); split: -1.14%, +0.22%
InvThroughput: 20125915 -> 19805168 (-1.59%); split: -1.63%, +0.03%
VClause: 521312 -> 519804 (-0.29%); split: -0.77%, +0.48%
SClause: 688861 -> 688897 (+0.01%); split: -0.04%, +0.05%
Copies: 3205421 -> 3177799 (-0.86%); split: -1.68%, +0.82%
Branches: 1181457 -> 1183147 (+0.14%); split: -0.03%, +0.17%
PreVGPRs: 1626681 -> 1595406 (-1.92%)

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12998>
 2021-09-23 16:57:56 +02:00
Timur Kristóf
f4a65e5628 ac/nir/nggc: Only repack arguments that are needed. 
Don't repack everything, only what is actually used.
The goal of this commit is primarily to remove unnecessary
LDS stores and loads. In addition to that, it also gets rid of
a few VALU instructions and reduces VGPR use.

Fossil DB stats on Sienna Cichlid with NGGC on:

Totals from 6951 (5.40% of 128647) affected shaders:
VGPRs: 206056 -> 205360 (-0.34%); split: -0.79%, +0.45%
CodeSize: 12344568 -> 12269312 (-0.61%); split: -0.62%, +0.01%
MaxWaves: 211206 -> 212196 (+0.47%)
Instrs: 2319459 -> 2308483 (-0.47%); split: -0.50%, +0.03%
Latency: 7220829 -> 7164721 (-0.78%); split: -1.21%, +0.43%
InvThroughput: 1051450 -> 1049191 (-0.21%); split: -0.36%, +0.15%
VClause: 25794 -> 25445 (-1.35%); split: -1.97%, +0.61%
SClause: 39192 -> 39277 (+0.22%); split: -0.21%, +0.43%
Copies: 315756 -> 313404 (-0.74%); split: -1.17%, +0.42%
Branches: 127878 -> 127879 (+0.00%); split: -0.00%, +0.00%
PreVGPRs: 168029 -> 160162 (-4.68%)

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12246>
 2021-09-01 14:45:14 +00:00
Timur Kristóf
8341af5109 radv, aco, ac/nir: Tweak position export scheduling for NGG culling. 
The result is about +5-ish fps in Doom Eternal.

It turns out that the location of position exports matters more
than we thought, and it's actually better to keep them at the bottom
for culling shaders rather than schedule it up to the top.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>
 2021-07-13 23:56:33 +00:00
Timur Kristóf
fc1fabbabf ac/nir: Analyze culling shaders to remember which inputs are used when. 
These will be useful for some optimizations.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>
 2021-07-13 23:56:33 +00:00
Timur Kristóf
e97f0463a8 ac/nir: Implement NGG deferred attribute culling in NIR. 
Culling is traditionally done by the rasterizer, but that
can be a bottleneck when an app creates a large number
of primitives. Eg. a lot of tiny triangles reduce the
rasterziation efficiency.

NGG makes it possible for the shader to check primitives
and delete those that it can prove are not needed.

After this is done, we have to repack the surviving invocations
so they remain compact. This also saves bandwidth, because
some memory loads are only executed by those vertices that
survived the culling.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>
 2021-07-13 23:56:33 +00:00
Timur Kristóf
651a3da1b5 ac/nir: Add a NIR port of ac_llvm_cull. 
The algorithms were originally implemented by Marek Olšák,
hence the copyright to AMD.

This commit just ports the LLVM based implementation to NIR,
using the new intrinsics added earlier.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10525>
 2021-07-13 23:56:33 +00:00
Timur Kristóf
60ac5dda82 ac: Add NIR lowering for NGG GS. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10740>
 2021-05-12 13:47:04 +00:00
Timur Kristóf
3d589b8b46 ac: Add new NIR pass to lower NGG VS/TES. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10740>
 2021-05-12 13:47:04 +00:00
Samuel Pitoiset
1c702a8239 ac: move ac_lower_indirect_derefs() outside of the LLVM dir 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10403>
 2021-04-23 11:52:01 +02:00
Timur Kristóf
3185cb7dbf ac: Add NIR passes to lower ES->GS I/O to memory accesses. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9201>
 2021-03-17 12:42:23 +00:00
Timur Kristóf
bf966d1c1d ac: Add NIR passes to lower VS->TCS->TES I/O to memory accesses. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9201>
 2021-03-17 12:42:23 +00:00