The two backends (ir3, dxil) using the lowering have
info->fs.uses_sample_shading matching set when sample shading is used -- the VK
drivers pass the rasterization state flag into the compiler, while
freedreno and d3d12 have caps->force_persample_interp so the frontend
creates a shader variant with info->fs.uses_sample_shading set.
This means that we can drop the sample-id SHL/AND in the pixel-rate
shading case, which in turn means that drivers don't need to have a
load_sample_id() that doesn't trigger sample-rate shading (which Adreno
doesn't have).
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36429>
When building for C23 the compiler warns about returning a boolean when
a different type is expected instead.
Change the code to return NULL instead of false, fixing the following
error:
-----------------------------------------------------------------------
../src/compiler/nir/nir_lower_io_indirect_loads.c: In function ‘get_load_once_variable’:
../src/compiler/nir/nir_lower_io_indirect_loads.c:87:17: error: incompatible types when returning type ‘_Bool’ but ‘nir_variable **’ {aka ‘struct nir_variable **’} was expected
87 | return false;
| ^~~~~
-----------------------------------------------------------------------
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36323>
For samplers the type_size() callback can return 0, which triggers
a NIR validation error.
In this case set range to ~0 which means the range is unknown.
Acked-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36263>
Set to true everywhere except:
- spirv_to_nir used by Vulkan
- bindless handles in GLSL
- some internal shaders and driver-specific code
Acked-by: Job Noorman <job@noorman.info>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36099>
so we can gather_info later.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36265>
Correctly/optimally using nir_opt_varyings directly is pretty tricky. For GL, we
have all the right logic in the GLSL linker. for VK, we don't want to duplicate
this dance in every driver. Wrap it all up in a nir_opt_varyings_bulk helper
that operates on an entire pipeline of nir_shader's, following the GLSL linker's
logic. This is suitable for Vulkan drivers.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Marek Olšák <maraeo@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36265>
block->imm_dom is NULL for unreachable phis, so the dominance checks would crash.
These blocks should be removed by nir_opt_dead_cf, so don't bother optimizing
them here.
Fixes: 60776f87c3 ("nir/opt_remove_phis: rematerialize constants")
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35935>
Tracking if we changed the shader is somewhat complicated, so assume
we always do.
Reviewed-by: Emma Anholt <emma@anholt.net>
Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36291>
See the comment at the top file :-)
The ideas in this pass are based on LLVM. The implementation itself is from
scratch because have you /tried/ to read that thing?
Because LLVM and therefore prop drivers do these optimizations, this should help
narrow Mesa's performance gap with the blobs.
This probably needs some tuning for best results on other ISAs, but the stats
for AGX speak for themselves, see next commits.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36147>
this is a little annoying.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36147>
For example, divergence analysis can call nir_print_instr with an
instruction that doesn't have a block set. When that happens,
print_state::shader will be NULL.
I stumbled on this while testing !36147.
v2: Use nir_instr::has_debug_info instead. Suggested by Konstantin.
Reviewed-by: Konstantin Seurer <konstantin.seurer@gmail.com>
Fixes: ce0f30b230 ("nir: Add variable debug info to instructions")
Fixes: 3aeab4ce40 ("nir/print: Do not print debug information when gathering it")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36267>
