Remove the preceeding nir as that is generally reserved for helpers
used across files.
Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36366>
Since we no longer share this with the old glsl ir linker just move
it to where it is called from.
Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36366>
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>
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>
e.g. load X; load W; ==> load XYZW. Verified with a shader test.
This will be used by AMD drivers. See the code comments.
Reviewed-by: Simon Perretta <simon.perretta@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36098>
The only last users of nir_link_opt_varyings are Vulkan drivers.
One linker error thrown by the optimizations is reimplemented
at the call site.
No interesting shader-db changes (other than random noise).
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36091>
A TF2 shader propagates 0 to the consumer, which eliminates 1 input
if we run algebraic opts and DCE before compaction.
This is a prerequisite for removing all IO var optimizations from the GLSL
linker that are redundant with nir_opt_varyings.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36091>
This reduces GLSL compile times with the gallium noop driver by 0.6%.
This might decrease register usage and do less code reordering because
nir_lower_io_vars_to_temporaries is no longer called for inputs, which
moved most input loads to the top.
radeonsi+ACO shader-db results are noise.
More uniforms are identified as inlinable.
TOTALS FROM ALL SHADERS (58138):
VGPRs: 2152680 -> 2158032 (0.25 %)
Code Size: 71008908 -> 71064812 (0.08 %) bytes
Max Waves: 916943 -> 916924 (-0.00 %)
Inline Uniforms: 6395 -> 6414 (0.30 %)
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36018>
It doesn't do anything since IO variables are lowered to intrinsics,
which simplifies and eliminates a lot of variable-specific stuff
like declared but dead builtin varyings and unused components
of builtin varying arrays.
This reduces GLSL compile times by 2.4% with the gallium noop driver.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Timothy Arceri <tarceri@itqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36023>
nir_opt_varyings reduces the number of varyings. Check against limits after
that, so that old and limited GPUs don't fail linking when nir_opt_varyings
is able to reduce varyings to or below the limit.
The previous code only checked FS inputs, which is glaringly obvious
from the removed var_counts_against_varying_limit function.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Timothy Arceri <tarceri@itqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36023>
Similar to nir_lower_alu_width(), the callback can return the
desired number of components for a phi, or 0 for no lowering.
The previous behavior of nir_lower_phis_to_scalar() with lower_all=true
can be elicited via nir_lower_all_phis_to_scalar() while the previous
behavior with lower_all=false now corresponds to nir_lower_phis_to_scalar()
with NULL callback.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Mel Henning <mhenning@darkrefraction.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35783>
It's done later in nir_lower_io_passes only for shader stages not
supporting indirect access.
Unfortunately we have add a hack into nir_lower_io_passes to get rid of
output loads. A later commit will remove it.
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35945>
If the last block is empty, nir_block_last_instr returns NULL, which
sets the cursor to NULL, which crashes.
I think this can't crash currently because if xfb is present, there is
always at least 1 output store in the last block due to
lower_io_vars_to_temporaries, but that won't be true after we stop
calling it in a later commit.
Fixes: fa9cee4247 - glsl: implement lower_xfb_varying() as a NIR pass
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35945>
e4m3fn: 8bit floating point format with 4bit exponent, 3bit mantissa
and no infinities (finite only)
e5m2: 8bit floating point format with 5bit exponent, 2bit mantissa
and with infinities.
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35434>
We will use it to skip lowering mediump IO to 16 bits if the previous
shader has XFB and mediump XFB doesn't work.
Drivers can decide not to lower mediump IO to 16 bits if nir->xfb_info
!= NULL for the pre-rast stage and if nir->info.prev_stage_has_xfb is
true for the FS stage. That way, drivers can lower mediump to 16 bits
for all cases except XFB.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35315>
Hopefully this doesn't break it (we may even lack tests), but we need to
know in prelink_lowering whether XFB is enabled or not.
The next commit that adds shader_info::prev_stage_uses_xfb depends on this.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35315>
Use the param type, not the referenced variable. The referenced variable
can be a structure, which wouldn't be recognized as a sampler or image.
Fixes: 733bee57eb - glsl: lower samplers with highp coordinates correctly
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Tested-by: Dieter Nützel Dieter@nuetzel-hh.de on gfx8 (Polaris 20)
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34959>
Require that the function returns false before we get to the end if there
is any linker error.
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34307>
This fixes some upcoming CTS tests that attempt bias usage when
it is not valid per spec.
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34285>
