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mesa/src/compiler/nir/nir_intrinsics.py

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#
# Copyright (C) 2018 Red Hat
# Copyright (C) 2014 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
# This file defines all the available intrinsics in one place.
#
# The Intrinsic class corresponds one-to-one with nir_intrinsic_info
# structure.
src0 = ('src', 0)
src1 = ('src', 1)
src2 = ('src', 2)
src3 = ('src', 3)
src4 = ('src', 4)
class Index(object):
def __init__(self, c_data_type, name):
self.c_data_type = c_data_type
self.name = name
class Intrinsic(object):
"""Class that represents all the information about an intrinsic opcode.
NOTE: this must be kept in sync with nir_intrinsic_info.
"""
def __init__(self, name, src_components, dest_components,
indices, flags, sysval, bit_sizes):
"""Parameters:
- name: the intrinsic name
- src_components: list of the number of components per src, 0 means
vectorized instruction with number of components given in the
num_components field in nir_intrinsic_instr.
- dest_components: number of destination components, -1 means no
dest, 0 means number of components given in num_components field
in nir_intrinsic_instr.
- indices: list of constant indicies
- flags: list of semantic flags
- sysval: is this a system-value intrinsic
- bit_sizes: allowed dest bit_sizes or the source it must match
"""
assert isinstance(name, str)
assert isinstance(src_components, list)
if src_components:
assert isinstance(src_components[0], int)
assert isinstance(dest_components, int)
assert isinstance(indices, list)
if indices:
assert isinstance(indices[0], Index)
assert isinstance(flags, list)
if flags:
assert isinstance(flags[0], str)
assert isinstance(sysval, bool)
if isinstance(bit_sizes, list):
assert not bit_sizes or isinstance(bit_sizes[0], int)
else:
assert isinstance(bit_sizes, tuple)
assert bit_sizes[0] == 'src'
assert isinstance(bit_sizes[1], int)
self.name = name
self.num_srcs = len(src_components)
self.src_components = src_components
self.has_dest = (dest_components >= 0)
self.dest_components = dest_components
self.num_indices = len(indices)
self.indices = indices
self.flags = flags
self.sysval = sysval
self.bit_sizes = bit_sizes if isinstance(bit_sizes, list) else []
self.bit_size_src = bit_sizes[1] if isinstance(bit_sizes, tuple) else -1
#
# Possible flags:
#
CAN_ELIMINATE = "NIR_INTRINSIC_CAN_ELIMINATE"
CAN_REORDER = "NIR_INTRINSIC_CAN_REORDER"
INTR_INDICES = []
INTR_OPCODES = {}
def index(c_data_type, name):
idx = Index(c_data_type, name)
INTR_INDICES.append(idx)
globals()[name.upper()] = idx
# Defines a new NIR intrinsic. By default, the intrinsic will have no sources
# and no destination.
#
# You can set dest_comp=n to enable a destination for the intrinsic, in which
# case it will have that many components, or =0 for "as many components as the
# NIR destination value."
#
# Set src_comp=n to enable sources for the intruction. It can be an array of
# component counts, or (for convenience) a scalar component count if there's
# only one source. If a component count is 0, it will be as many components as
# the intrinsic has based on the dest_comp.
def intrinsic(name, src_comp=[], dest_comp=-1, indices=[],
flags=[], sysval=False, bit_sizes=[]):
assert name not in INTR_OPCODES
INTR_OPCODES[name] = Intrinsic(name, src_comp, dest_comp,
indices, flags, sysval, bit_sizes)
#
# Possible indices:
#
# Generally instructions that take a offset src argument, can encode
# a constant 'base' value which is added to the offset.
index("int", "base")
# For store instructions, a writemask for the store.
index("unsigned", "write_mask")
# The stream-id for GS emit_vertex/end_primitive intrinsics.
index("unsigned", "stream_id")
# The clip-plane id for load_user_clip_plane intrinsic.
index("unsigned", "ucp_id")
# The offset to the start of the NIR_INTRINSIC_RANGE. This is an alternative
# to NIR_INTRINSIC_BASE for describing the valid range in intrinsics that don't
# have the implicit addition of a base to the offset.
#
# If the [range_base, range] is [0, ~0], then we don't know the possible
# range of the access.
index("unsigned", "range_base")
# The amount of data, starting from BASE or RANGE_BASE, that this
# instruction may access. This is used to provide bounds if the offset is
# not constant.
index("unsigned", "range")
# The Vulkan descriptor set for vulkan_resource_index intrinsic.
index("unsigned", "desc_set")
# The Vulkan descriptor set binding for vulkan_resource_index intrinsic.
index("unsigned", "binding")
# Component offset
index("unsigned", "component")
# Column index for matrix system values
index("unsigned", "column")
# Interpolation mode (only meaningful for FS inputs)
index("unsigned", "interp_mode")
# A binary nir_op to use when performing a reduction or scan operation
index("unsigned", "reduction_op")
# Cluster size for reduction operations
index("unsigned", "cluster_size")
# Parameter index for a load_param intrinsic
index("unsigned", "param_idx")
# Image dimensionality for image intrinsics
index("enum glsl_sampler_dim", "image_dim")
# Non-zero if we are accessing an array image
index("bool", "image_array")
# Image format for image intrinsics
# Vertex buffer format for load_typed_buffer_amd
index("enum pipe_format", "format")
# Access qualifiers for image and memory access intrinsics. ACCESS_RESTRICT is
# not set at the intrinsic if the NIR was created from SPIR-V.
index("enum gl_access_qualifier", "access")
# call index for split raytracing shaders
index("unsigned", "call_idx")
# The stack size increment/decrement for split raytracing shaders
index("unsigned", "stack_size")
# Alignment for offsets and addresses
#
# These two parameters, specify an alignment in terms of a multiplier and
# an offset. The multiplier is always a power of two. The offset or
# address parameter X of the intrinsic is guaranteed to satisfy the
# following:
#
# (X - align_offset) % align_mul == 0
#
# For constant offset values, align_mul will be NIR_ALIGN_MUL_MAX and the
# align_offset will be modulo that.
index("unsigned", "align_mul")
index("unsigned", "align_offset")
# The Vulkan descriptor type for a vulkan_resource_[re]index intrinsic.
index("unsigned", "desc_type")
# The nir_alu_type of input data to a store or conversion
index("nir_alu_type", "src_type")
# The nir_alu_type of the data output from a load or conversion
index("nir_alu_type", "dest_type")
# The swizzle mask for quad_swizzle_amd & masked_swizzle_amd
index("unsigned", "swizzle_mask")
# Allow FI=1 for quad_swizzle_amd & masked_swizzle_amd
index("bool", "fetch_inactive")
# Offsets for load_shared2_amd/store_shared2_amd
index("uint8_t", "offset0")
index("uint8_t", "offset1")
# If true, both offsets have an additional stride of 64 dwords (ie. they are multiplied by 256 bytes
# in hardware, instead of 4).
index("bool", "st64")
# When set, range analysis will use it for nir_unsigned_upper_bound
index("unsigned", "arg_upper_bound_u32_amd")
# Separate source/dest access flags for copies
index("enum gl_access_qualifier", "dst_access")
index("enum gl_access_qualifier", "src_access")
# Driver location of attribute
index("unsigned", "driver_location")
# Ordering and visibility of a memory operation
index("nir_memory_semantics", "memory_semantics")
# Modes affected by a memory operation
index("nir_variable_mode", "memory_modes")
# Scope of a memory operation
index("mesa_scope", "memory_scope")
# Scope of a control barrier
index("mesa_scope", "execution_scope")
# Semantics of an IO instruction
index("struct nir_io_semantics", "io_semantics")
# Transform feedback info
index("struct nir_io_xfb", "io_xfb")
index("struct nir_io_xfb", "io_xfb2")
# Ray query values accessible from the RayQueryKHR object
index("nir_ray_query_value", "ray_query_value")
# Select between committed and candidate ray queriy intersections
index("bool", "committed")
# Rounding mode for conversions
index("nir_rounding_mode", "rounding_mode")
# Whether or not to saturate in conversions
index("unsigned", "saturate")
# Whether or not trace_ray_intel is synchronous
index("bool", "synchronous")
# Value ID to identify SSA value loaded/stored on the stack
index("unsigned", "value_id")
# Whether to sign-extend offsets in address arithmatic (else zero extend)
index("bool", "sign_extend")
# Instruction specific flags
index("unsigned", "flags")
# Logical operation of an atomic intrinsic
index("nir_atomic_op", "atomic_op")
# Block identifier to push promotion
index("unsigned", "resource_block_intel")
# Various flags describing the resource access
index("nir_resource_data_intel", "resource_access_intel")
# Register metadata
# number of vector components
index("unsigned", "num_components")
# size of array (0 for no array)
index("unsigned", "num_array_elems")
# The bit-size of each channel; must be one of 1, 8, 16, 32, or 64
index("unsigned", "bit_size")
# True if this register may have different values in different SIMD invocations
# of the shader.
index("bool", "divergent")
# On a register load, floating-point absolute value/negate loaded value.
index("bool", "legacy_fabs")
index("bool", "legacy_fneg")
# On a register store, floating-point saturate the stored value.
index("bool", "legacy_fsat")
# For Cooperative Matrix intrinsics.
index("struct glsl_cmat_description", "cmat_desc")
index("enum glsl_matrix_layout", "matrix_layout")
index("nir_cmat_signed", "cmat_signed_mask")
index("nir_op", "alu_op")
# For Intel DPAS instrinsic.
index("unsigned", "systolic_depth")
index("unsigned", "repeat_count")
intrinsic("nop", flags=[CAN_ELIMINATE])
intrinsic("convert_alu_types", dest_comp=0, src_comp=[0],
indices=[SRC_TYPE, DEST_TYPE, ROUNDING_MODE, SATURATE],
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("load_param", dest_comp=0, indices=[PARAM_IDX], flags=[CAN_ELIMINATE])
intrinsic("load_deref", dest_comp=0, src_comp=[-1],
indices=[ACCESS], flags=[CAN_ELIMINATE])
intrinsic("store_deref", src_comp=[-1, 0], indices=[WRITE_MASK, ACCESS])
intrinsic("copy_deref", src_comp=[-1, -1], indices=[DST_ACCESS, SRC_ACCESS])
intrinsic("memcpy_deref", src_comp=[-1, -1, 1], indices=[DST_ACCESS, SRC_ACCESS])
# Returns an opaque handle representing a register indexed by BASE. The
# logically def-use list of a register is given by the use list of this handle.
# The shape of the underlying register is given by the indices, the handle
# itself is always a 32-bit scalar.
intrinsic("decl_reg", dest_comp=1,
indices=[NUM_COMPONENTS, NUM_ARRAY_ELEMS, BIT_SIZE, DIVERGENT],
flags=[CAN_ELIMINATE])
# Load a register given as the source directly with base offset BASE.
intrinsic("load_reg", dest_comp=0, src_comp=[1],
indices=[BASE, LEGACY_FABS, LEGACY_FNEG], flags=[CAN_ELIMINATE])
# Load a register given as first source indirectly with base offset BASE and
# indirect offset as second source.
intrinsic("load_reg_indirect", dest_comp=0, src_comp=[1, 1],
indices=[BASE, LEGACY_FABS, LEGACY_FNEG], flags=[CAN_ELIMINATE])
# Store the value in the first source to a register given as the second source
# directly with base offset BASE.
intrinsic("store_reg", src_comp=[0, 1],
indices=[BASE, WRITE_MASK, LEGACY_FSAT])
# Store the value in the first source to a register given as the second
# source indirectly with base offset BASE and indirect offset as third source.
intrinsic("store_reg_indirect", src_comp=[0, 1, 1],
indices=[BASE, WRITE_MASK, LEGACY_FSAT])
# Interpolation of input. The interp_deref_at* intrinsics are similar to the
# load_var intrinsic acting on a shader input except that they interpolate the
# input differently. The at_sample, at_offset and at_vertex intrinsics take an
# additional source that is an integer sample id, a vec2 position offset, or a
# vertex ID respectively.
intrinsic("interp_deref_at_centroid", dest_comp=0, src_comp=[1],
flags=[ CAN_ELIMINATE, CAN_REORDER])
intrinsic("interp_deref_at_sample", src_comp=[1, 1], dest_comp=0,
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("interp_deref_at_offset", src_comp=[1, 2], dest_comp=0,
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("interp_deref_at_vertex", src_comp=[1, 1], dest_comp=0,
flags=[CAN_ELIMINATE, CAN_REORDER])
# Gets the length of an unsized array at the end of a buffer
intrinsic("deref_buffer_array_length", src_comp=[-1], dest_comp=1,
indices=[ACCESS], flags=[CAN_ELIMINATE, CAN_REORDER])
# Ask the driver for the size of a given SSBO. It takes the buffer index
# as source.
intrinsic("get_ssbo_size", src_comp=[-1], dest_comp=1, bit_sizes=[32],
indices=[ACCESS], flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("get_ubo_size", src_comp=[-1], dest_comp=1,
flags=[CAN_ELIMINATE, CAN_REORDER])
# Intrinsics which provide a run-time mode-check. Unlike the compile-time
# mode checks, a pointer can only have exactly one mode at runtime.
intrinsic("deref_mode_is", src_comp=[-1], dest_comp=1,
indices=[MEMORY_MODES], flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("addr_mode_is", src_comp=[-1], dest_comp=1,
indices=[MEMORY_MODES], flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("is_sparse_texels_resident", dest_comp=1, src_comp=[1], bit_sizes=[1,32],
flags=[CAN_ELIMINATE, CAN_REORDER])
# result code is resident only if both inputs are resident
intrinsic("sparse_residency_code_and", dest_comp=1, src_comp=[1, 1], bit_sizes=[32],
flags=[CAN_ELIMINATE, CAN_REORDER])
# Unlike is_sparse_texels_resident, this intrinsic is required to consume
# the destination of the nir_tex_instr or sparse_load intrinsic directly.
# As such it is allowed to ignore the .e component where we usually store
# sparse information.
intrinsic("is_sparse_resident_zink", dest_comp=1, src_comp=[0], bit_sizes=[1],
flags=[CAN_ELIMINATE, CAN_REORDER])
# a barrier is an intrinsic with no inputs/outputs but which can't be moved
# around/optimized in general
def barrier(name):
intrinsic(name)
barrier("discard")
# Demote fragment shader invocation to a helper invocation. Any stores to
# memory after this instruction are suppressed and the fragment does not write
# outputs to the framebuffer. Unlike discard, demote needs to ensure that
# derivatives will still work for invocations that were not demoted.
#
# As specified by SPV_EXT_demote_to_helper_invocation.
barrier("demote")
intrinsic("is_helper_invocation", dest_comp=1, flags=[CAN_ELIMINATE])
# SpvOpTerminateInvocation from SPIR-V. Essentially a discard "for real".
barrier("terminate")
# Control/Memory barrier with explicit scope. Follows the semantics of SPIR-V
# OpMemoryBarrier and OpControlBarrier, used to implement Vulkan Memory Model.
# Storage that the barrier applies is represented using NIR variable modes.
# For an OpMemoryBarrier, set EXECUTION_SCOPE to SCOPE_NONE.
intrinsic("barrier",
indices=[EXECUTION_SCOPE, MEMORY_SCOPE, MEMORY_SEMANTICS, MEMORY_MODES])
# Shader clock intrinsic with semantics analogous to the clock2x32ARB()
# GLSL intrinsic.
# The latter can be used as code motion barrier, which is currently not
# feasible with NIR.
intrinsic("shader_clock", dest_comp=2, bit_sizes=[32], flags=[CAN_ELIMINATE],
indices=[MEMORY_SCOPE])
# Shader ballot intrinsics with semantics analogous to the
#
# ballotARB()
# readInvocationARB()
# readFirstInvocationARB()
#
# GLSL functions from ARB_shader_ballot.
intrinsic("ballot", src_comp=[1], dest_comp=0, flags=[CAN_ELIMINATE])
intrinsic("read_invocation", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("read_first_invocation", src_comp=[0], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
# Same as ballot, but inactive invocations contribute undefined bits.
intrinsic("ballot_relaxed", src_comp=[1], dest_comp=0, flags=[CAN_ELIMINATE])
# Allows the backend compiler to move this value to an uniform register.
# Result is undefined if src is not uniform.
# Unlike read_first_invocation, it may be replaced by a divergent move or CSE'd.
intrinsic("as_uniform", src_comp=[0], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
# Returns the value of the first source for the lane where the second source is
# true. The second source must be true for exactly one lane.
intrinsic("read_invocation_cond_ir3", src_comp=[0, 1], dest_comp=0, flags=[CAN_ELIMINATE])
# Additional SPIR-V ballot intrinsics
#
# These correspond to the SPIR-V opcodes
#
# OpGroupNonUniformElect
# OpSubgroupFirstInvocationKHR
# OpGroupNonUniformInverseBallot
intrinsic("elect", dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("first_invocation", dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE])
intrinsic("last_invocation", dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE])
intrinsic("inverse_ballot", src_comp=[0], dest_comp=1, flags=[CAN_ELIMINATE])
barrier("begin_invocation_interlock")
barrier("end_invocation_interlock")
# A conditional discard/demote/terminate, with a single boolean source.
intrinsic("discard_if", src_comp=[1])
intrinsic("demote_if", src_comp=[1])
intrinsic("terminate_if", src_comp=[1])
# ARB_shader_group_vote intrinsics
intrinsic("vote_any", src_comp=[1], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("vote_all", src_comp=[1], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("vote_feq", src_comp=[0], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("vote_ieq", src_comp=[0], dest_comp=1, flags=[CAN_ELIMINATE])
# Ballot ALU operations from SPIR-V.
#
# These operations work like their ALU counterparts except that the operate
# on a uvec4 which is treated as a 128bit integer. Also, they are, in
# general, free to ignore any bits which are above the subgroup size.
intrinsic("ballot_bitfield_extract", src_comp=[4, 1], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("ballot_bit_count_reduce", src_comp=[4], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("ballot_bit_count_inclusive", src_comp=[4], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("ballot_bit_count_exclusive", src_comp=[4], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("ballot_find_lsb", src_comp=[4], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("ballot_find_msb", src_comp=[4], dest_comp=1, flags=[CAN_ELIMINATE])
# Shuffle operations from SPIR-V.
intrinsic("shuffle", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("shuffle_xor", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("shuffle_up", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("shuffle_down", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
# Quad operations from SPIR-V.
intrinsic("quad_broadcast", src_comp=[0, 1], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("quad_swap_horizontal", src_comp=[0], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("quad_swap_vertical", src_comp=[0], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
intrinsic("quad_swap_diagonal", src_comp=[0], dest_comp=0, bit_sizes=src0, flags=[CAN_ELIMINATE])
# Similar to vote_any and vote_all, but per-quad instead of per-wavefront.
# Equivalent to subgroupOr(val, 4) and subgroupAnd(val, 4) assuming val is
# boolean.
intrinsic("quad_vote_any", src_comp=[1], dest_comp=1, flags=[CAN_ELIMINATE])
intrinsic("quad_vote_all", src_comp=[1], dest_comp=1, flags=[CAN_ELIMINATE])
# Rotate operation from SPIR-V: SpvOpGroupNonUniformRotateKHR.
intrinsic("rotate", src_comp=[0, 1], dest_comp=0, bit_sizes=src0,
indices=[CLUSTER_SIZE], flags=[CAN_ELIMINATE]);
intrinsic("reduce", src_comp=[0], dest_comp=0, bit_sizes=src0,
indices=[REDUCTION_OP, CLUSTER_SIZE], flags=[CAN_ELIMINATE])
intrinsic("inclusive_scan", src_comp=[0], dest_comp=0, bit_sizes=src0,
indices=[REDUCTION_OP], flags=[CAN_ELIMINATE])
intrinsic("exclusive_scan", src_comp=[0], dest_comp=0, bit_sizes=src0,
indices=[REDUCTION_OP], flags=[CAN_ELIMINATE])
# AMD shader ballot operations
intrinsic("quad_swizzle_amd", src_comp=[0], dest_comp=0, bit_sizes=src0,
indices=[SWIZZLE_MASK, FETCH_INACTIVE], flags=[CAN_ELIMINATE])
intrinsic("masked_swizzle_amd", src_comp=[0], dest_comp=0, bit_sizes=src0,
indices=[SWIZZLE_MASK, FETCH_INACTIVE], flags=[CAN_ELIMINATE])
intrinsic("write_invocation_amd", src_comp=[0, 0, 1], dest_comp=0, bit_sizes=src0,
flags=[CAN_ELIMINATE])
# src = [ mask, addition ]
intrinsic("mbcnt_amd", src_comp=[1, 1], dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE])
# Compiled to v_permlane16_b32. src = [ value, lanesel_lo, lanesel_hi ]
intrinsic("lane_permute_16_amd", src_comp=[1, 1, 1], dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE])
# Basic Geometry Shader intrinsics.
#
# emit_vertex implements GLSL's EmitStreamVertex() built-in. It takes a single
# index, which is the stream ID to write to.
#
# end_primitive implements GLSL's EndPrimitive() built-in.
intrinsic("emit_vertex", indices=[STREAM_ID])
intrinsic("end_primitive", indices=[STREAM_ID])
# Geometry Shader intrinsics with a vertex count.
#
# Alternatively, drivers may implement these intrinsics, and use
# nir_lower_gs_intrinsics() to convert from the basic intrinsics.
#
# These contain four additional unsigned integer sources:
# 1. The total number of vertices emitted so far.
# 2. The number of vertices emitted for the current primitive
# so far if we're counting, otherwise undef.
# 3. The total number of primitives emitted so far.
# 4. The total number of decomposed primitives emitted so far. This counts like
# the PRIMITIVES_GENERATED query: a triangle strip with 5 vertices is counted
# as 3 primitives (not 1).
intrinsic("emit_vertex_with_counter", src_comp=[1, 1, 1, 1], indices=[STREAM_ID])
intrinsic("end_primitive_with_counter", src_comp=[1, 1, 1, 1], indices=[STREAM_ID])
# Contains the final total vertex, primitive, and decomposed primitives counts
# in the current GS thread.
intrinsic("set_vertex_and_primitive_count", src_comp=[1, 1, 1], indices=[STREAM_ID])
# Launches mesh shader workgroups from a task shader, with explicit task_payload.
# Rules:
# - This is a terminating instruction.
# - May only occur in workgroup-uniform control flow.
# - Dispatch sizes may be divergent (in which case the values
# from the first invocation are used).
# Meaning of indices:
# - BASE: address of the task_payload variable used.
# - RANGE: size of the task_payload variable used.
#
# src[] = {vec(x, y, z)}
intrinsic("launch_mesh_workgroups", src_comp=[3], indices=[BASE, RANGE])
# Launches mesh shader workgroups from a task shader, with task_payload variable deref.
# Same rules as launch_mesh_workgroups apply here as well.
# src[] = {vec(x, y, z), payload pointer}
intrinsic("launch_mesh_workgroups_with_payload_deref", src_comp=[3, -1], indices=[])
# Trace a ray through an acceleration structure
#
# This instruction has a lot of parameters:
# 0. Acceleration Structure
# 1. Ray Flags
# 2. Cull Mask
# 3. SBT Offset
# 4. SBT Stride
# 5. Miss shader index
# 6. Ray Origin
# 7. Ray Tmin
# 8. Ray Direction
# 9. Ray Tmax
# 10. Payload
intrinsic("trace_ray", src_comp=[-1, 1, 1, 1, 1, 1, 3, 1, 3, 1, -1])
# src[] = { hit_t, hit_kind }
intrinsic("report_ray_intersection", src_comp=[1, 1], dest_comp=1)
intrinsic("ignore_ray_intersection")
intrinsic("accept_ray_intersection") # Not in SPIR-V; useful for lowering
intrinsic("terminate_ray")
# src[] = { sbt_index, payload }
intrinsic("execute_callable", src_comp=[1, -1])
# Initialize a ray query
#
# 0. Ray Query
# 1. Acceleration Structure
# 2. Ray Flags
# 3. Cull Mask
# 4. Ray Origin
# 5. Ray Tmin
# 6. Ray Direction
# 7. Ray Tmax
intrinsic("rq_initialize", src_comp=[-1, -1, 1, 1, 3, 1, 3, 1])
# src[] = { query }
intrinsic("rq_terminate", src_comp=[-1])
# src[] = { query }
intrinsic("rq_proceed", src_comp=[-1], dest_comp=1)
# src[] = { query, hit }
intrinsic("rq_generate_intersection", src_comp=[-1, 1])
# src[] = { query }
intrinsic("rq_confirm_intersection", src_comp=[-1])
# src[] = { query }
intrinsic("rq_load", src_comp=[-1], dest_comp=0, indices=[RAY_QUERY_VALUE,COMMITTED,COLUMN])
# Driver independent raytracing helpers
# rt_resume is a helper that that be the first instruction accesing the
# stack/scratch in a resume shader for a raytracing pipeline. It includes the
# resume index (for nir_lower_shader_calls_internal reasons) and the stack size
# of the variables spilled during the call. The stack size can be use to e.g.
# adjust a stack pointer.
intrinsic("rt_resume", indices=[CALL_IDX, STACK_SIZE])
# Lowered version of execute_callabe that includes the index of the resume
# shader, and the amount of scratch space needed for this call (.ie. how much
# to increase a stack pointer by).
# src[] = { sbt_index, payload }
intrinsic("rt_execute_callable", src_comp=[1, -1], indices=[CALL_IDX,STACK_SIZE])
# Lowered version of trace_ray in a similar vein to rt_execute_callable.
# src same as trace_ray
intrinsic("rt_trace_ray", src_comp=[-1, 1, 1, 1, 1, 1, 3, 1, 3, 1, -1],
indices=[CALL_IDX, STACK_SIZE])
# Atomic counters
#
# The *_deref variants take an atomic_uint nir_variable, while the other,
# lowered, variants take a buffer index and register offset. The buffer index
# is always constant, as there's no way to declare an array of atomic counter
# buffers.
#
# The register offset may be non-constant but must by dynamically uniform
# ("Atomic counters aggregated into arrays within a shader can only be indexed
# with dynamically uniform integral expressions, otherwise results are
# undefined.")
def atomic(name, flags=[]):
intrinsic(name + "_deref", src_comp=[-1], dest_comp=1, flags=flags)
intrinsic(name, src_comp=[1], dest_comp=1, indices=[BASE, RANGE_BASE], flags=flags)
def atomic2(name):
intrinsic(name + "_deref", src_comp=[-1, 1], dest_comp=1)
intrinsic(name, src_comp=[1, 1], dest_comp=1, indices=[BASE, RANGE_BASE])
def atomic3(name):
intrinsic(name + "_deref", src_comp=[-1, 1, 1], dest_comp=1)
intrinsic(name, src_comp=[1, 1, 1], dest_comp=1, indices=[BASE, RANGE_BASE])
atomic("atomic_counter_inc")
atomic("atomic_counter_pre_dec")
atomic("atomic_counter_post_dec")
atomic("atomic_counter_read", flags=[CAN_ELIMINATE])
atomic2("atomic_counter_add")
atomic2("atomic_counter_min")
atomic2("atomic_counter_max")
atomic2("atomic_counter_and")
atomic2("atomic_counter_or")
atomic2("atomic_counter_xor")
atomic2("atomic_counter_exchange")
atomic3("atomic_counter_comp_swap")
# Image load, store and atomic intrinsics.
#
# All image intrinsics come in three versions. One which take an image target
# passed as a deref chain as the first source, one which takes an index as the
# first source, and one which takes a bindless handle as the first source.
# In the first version, the image variable contains the memory and layout
# qualifiers that influence the semantics of the intrinsic. In the second and
# third, the image format and access qualifiers are provided as constant
# indices. Up through GLSL ES 3.10, the image index source may only be a
# constant array access. GLSL ES 3.20 and GLSL 4.00 allow dynamically uniform
# indexing.
#
# All image intrinsics take a four-coordinate vector and a sample index as
# 2nd and 3rd sources, determining the location within the image that will be
# accessed by the intrinsic. Components not applicable to the image target
# in use are undefined. Image store takes an additional four-component
# argument with the value to be written, and image atomic operations take
# either one or two additional scalar arguments with the same meaning as in
# the ARB_shader_image_load_store specification.
#
# The last source of many image intrinsics is the LOD. This source is zero
# unless e.g. SPV_AMD_shader_image_load_store_lod is supported.
def image(name, src_comp=[], extra_indices=[], **kwargs):
intrinsic("image_deref_" + name, src_comp=[-1] + src_comp,
indices=[IMAGE_DIM, IMAGE_ARRAY, FORMAT, ACCESS] + extra_indices, **kwargs)
intrinsic("image_" + name, src_comp=[1] + src_comp,
indices=[IMAGE_DIM, IMAGE_ARRAY, FORMAT, ACCESS, RANGE_BASE] + extra_indices, **kwargs)
intrinsic("bindless_image_" + name, src_comp=[-1] + src_comp,
indices=[IMAGE_DIM, IMAGE_ARRAY, FORMAT, ACCESS] + extra_indices, **kwargs)
image("load", src_comp=[4, 1, 1], extra_indices=[DEST_TYPE], dest_comp=0, flags=[CAN_ELIMINATE])
image("sparse_load", src_comp=[4, 1, 1], extra_indices=[DEST_TYPE], dest_comp=0, flags=[CAN_ELIMINATE])
image("store", src_comp=[4, 1, 0, 1], extra_indices=[SRC_TYPE])
image("atomic", src_comp=[4, 1, 1], dest_comp=1, extra_indices=[ATOMIC_OP])
image("atomic_swap", src_comp=[4, 1, 1, 1], dest_comp=1, extra_indices=[ATOMIC_OP])
image("size", dest_comp=0, src_comp=[1], flags=[CAN_ELIMINATE, CAN_REORDER])
image("samples", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
image("texel_address", dest_comp=1, src_comp=[4, 1],
flags=[CAN_ELIMINATE, CAN_REORDER])
# This returns true if all samples within the pixel have equal color values.
image("samples_identical", dest_comp=1, src_comp=[4], flags=[CAN_ELIMINATE])
# Non-uniform access is not lowered for image_descriptor_amd.
# dest_comp can be either 4 (buffer) or 8 (image).
image("descriptor_amd", dest_comp=0, src_comp=[], flags=[CAN_ELIMINATE, CAN_REORDER])
# CL-specific format queries
image("format", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
image("order", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
# Multisample fragment mask load
# src_comp[0] is same as image load src_comp[0]
image("fragment_mask_load_amd", src_comp=[4], dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE, CAN_REORDER])
# Vulkan descriptor set intrinsics
#
# The Vulkan API uses a different binding model from GL. In the Vulkan
# API, all external resources are represented by a tuple:
#
# (descriptor set, binding, array index)
#
# where the array index is the only thing allowed to be indirect. The
# vulkan_surface_index intrinsic takes the descriptor set and binding as
# its first two indices and the array index as its source. The third
# index is a nir_variable_mode in case that's useful to the backend.
#
# The intended usage is that the shader will call vulkan_surface_index to
# get an index and then pass that as the buffer index ubo/ssbo calls.
#
# The vulkan_resource_reindex intrinsic takes a resource index in src0
# (the result of a vulkan_resource_index or vulkan_resource_reindex) which
# corresponds to the tuple (set, binding, index) and computes an index
# corresponding to tuple (set, binding, idx + src1).
intrinsic("vulkan_resource_index", src_comp=[1], dest_comp=0,
indices=[DESC_SET, BINDING, DESC_TYPE],
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("vulkan_resource_reindex", src_comp=[0, 1], dest_comp=0,
indices=[DESC_TYPE], flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("load_vulkan_descriptor", src_comp=[-1], dest_comp=0,
indices=[DESC_TYPE], flags=[CAN_ELIMINATE, CAN_REORDER])
# atomic intrinsics
#
# All of these atomic memory operations read a value from memory, compute a new
# value using one of the operations below, write the new value to memory, and
# return the original value read.
#
# All variable operations take 2 sources except CompSwap that takes 3. These
# sources represent:
#
# 0: A deref to the memory on which to perform the atomic
# 1: The data parameter to the atomic function (i.e. the value to add
# in shared_atomic_add, etc).
# 2: For CompSwap only: the second data parameter.
#
# All SSBO operations take 3 sources except CompSwap that takes 4. These
# sources represent:
#
# 0: The SSBO buffer index (dynamically uniform in GLSL, possibly non-uniform
# with VK_EXT_descriptor_indexing).
# 1: The offset into the SSBO buffer of the variable that the atomic
# operation will operate on.
# 2: The data parameter to the atomic function (i.e. the value to add
# in ssbo_atomic_add, etc).
# 3: For CompSwap only: the second data parameter.
#
# All shared (and task payload) variable operations take 2 sources
# except CompSwap that takes 3.
# These sources represent:
#
# 0: The offset into the shared variable storage region that the atomic
# operation will operate on.
# 1: The data parameter to the atomic function (i.e. the value to add
# in shared_atomic_add, etc).
# 2: For CompSwap only: the second data parameter.
#
# All global operations take 2 sources except CompSwap that takes 3. These
# sources represent:
#
# 0: The memory address that the atomic operation will operate on.
# 1: The data parameter to the atomic function (i.e. the value to add
# in shared_atomic_add, etc).
# 2: For CompSwap only: the second data parameter.
#
# The 2x32 global variants use a vec2 for the memory address where component X
# has the low 32-bit and component Y has the high 32-bit.
#
# IR3 global operations take 32b vec2 as memory address. IR3 doesn't support
# float atomics.
#
# AGX global variants take a 64-bit base address plus a 32-bit offset in words.
# The offset is sign-extended or zero-extended based on the SIGN_EXTEND index.
intrinsic("deref_atomic", src_comp=[-1, 1], dest_comp=1, indices=[ACCESS, ATOMIC_OP])
intrinsic("ssbo_atomic", src_comp=[-1, 1, 1], dest_comp=1, indices=[ACCESS, ATOMIC_OP])
intrinsic("shared_atomic", src_comp=[1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("task_payload_atomic", src_comp=[1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic", src_comp=[1, 1], dest_comp=1, indices=[ATOMIC_OP])
intrinsic("global_atomic_2x32", src_comp=[2, 1], dest_comp=1, indices=[ATOMIC_OP])
intrinsic("global_atomic_amd", src_comp=[1, 1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic_ir3", src_comp=[2, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic_agx", src_comp=[1, 1, 1], dest_comp=1, indices=[ATOMIC_OP, SIGN_EXTEND])
intrinsic("deref_atomic_swap", src_comp=[-1, 1, 1], dest_comp=1, indices=[ACCESS, ATOMIC_OP])
intrinsic("ssbo_atomic_swap", src_comp=[-1, 1, 1, 1], dest_comp=1, indices=[ACCESS, ATOMIC_OP])
intrinsic("shared_atomic_swap", src_comp=[1, 1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("task_payload_atomic_swap", src_comp=[1, 1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic_swap", src_comp=[1, 1, 1], dest_comp=1, indices=[ATOMIC_OP])
intrinsic("global_atomic_swap_2x32", src_comp=[2, 1, 1], dest_comp=1, indices=[ATOMIC_OP])
intrinsic("global_atomic_swap_amd", src_comp=[1, 1, 1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic_swap_ir3", src_comp=[2, 1, 1], dest_comp=1, indices=[BASE, ATOMIC_OP])
intrinsic("global_atomic_swap_agx", src_comp=[1, 1, 1, 1], dest_comp=1, indices=[ATOMIC_OP, SIGN_EXTEND])
def system_value(name, dest_comp, indices=[], bit_sizes=[32]):
intrinsic("load_" + name, [], dest_comp, indices,
flags=[CAN_ELIMINATE, CAN_REORDER], sysval=True,
bit_sizes=bit_sizes)
system_value("frag_coord", 4)
# 16-bit integer vec2 of the pixel X/Y in the framebuffer.
system_value("pixel_coord", 2, bit_sizes=[16])
# Scalar load of frag_coord Z/W components (component=2 for Z, component=3 for
# W). Backends can lower frag_coord to pixel_coord + frag_coord_zw, in case
# X/Y is available as an integer but Z/W requires interpolation.
system_value("frag_coord_zw", 1, indices=[COMPONENT])
system_value("point_coord", 2)
system_value("line_coord", 1)
system_value("front_face", 1, bit_sizes=[1, 32])
system_value("vertex_id", 1)
system_value("vertex_id_zero_base", 1)
system_value("first_vertex", 1)
system_value("is_indexed_draw", 1)
system_value("base_vertex", 1)
system_value("instance_id", 1)
system_value("base_instance", 1)
system_value("draw_id", 1)
system_value("sample_id", 1)
# sample_id_no_per_sample is like sample_id but does not imply per-
# sample shading. See the lower_helper_invocation option.
system_value("sample_id_no_per_sample", 1)
system_value("sample_pos", 2)
# sample_pos_or_center is like sample_pos but does not imply per-sample
# shading. When per-sample dispatch is not enabled, it returns (0.5, 0.5).
system_value("sample_pos_or_center", 2)
system_value("sample_mask_in", 1)
system_value("primitive_id", 1)
system_value("invocation_id", 1)
system_value("tess_coord", 3)
# First 2 components of tess_coord only
system_value("tess_coord_xy", 2)
system_value("tess_level_outer", 4)
system_value("tess_level_inner", 2)
system_value("tess_level_outer_default", 4)
system_value("tess_level_inner_default", 2)
system_value("patch_vertices_in", 1)
system_value("local_invocation_id", 3)
system_value("local_invocation_index", 1)
# zero_base indicates it starts from 0 for the current dispatch
# non-zero_base indicates the base is included
system_value("workgroup_id", 3)
system_value("workgroup_id_zero_base", 3)
# The workgroup_index is intended for situations when a 3 dimensional
# workgroup_id is not available on the HW, but a 1 dimensional index is.
system_value("workgroup_index", 1)
system_value("base_workgroup_id", 3, bit_sizes=[32, 64])
system_value("user_clip_plane", 4, indices=[UCP_ID])
system_value("num_workgroups", 3)
system_value("num_vertices", 1)
system_value("helper_invocation", 1, bit_sizes=[1, 32])
system_value("layer_id", 1)
system_value("view_index", 1)
system_value("subgroup_size", 1)
system_value("subgroup_invocation", 1)
# These intrinsics provide a bitmask for all invocations, with one bit per
# invocation starting with the least significant bit, according to the
# following table,
#
# variable equation for bit values
# ---------------- --------------------------------
# subgroup_eq_mask bit index == subgroup_invocation
# subgroup_ge_mask bit index >= subgroup_invocation
# subgroup_gt_mask bit index > subgroup_invocation
# subgroup_le_mask bit index <= subgroup_invocation
# subgroup_lt_mask bit index < subgroup_invocation
#
# These correspond to gl_SubGroupEqMaskARB, etc. from GL_ARB_shader_ballot,
# and the above documentation is "borrowed" from that extension spec.
system_value("subgroup_eq_mask", 0, bit_sizes=[32, 64])
system_value("subgroup_ge_mask", 0, bit_sizes=[32, 64])
system_value("subgroup_gt_mask", 0, bit_sizes=[32, 64])
system_value("subgroup_le_mask", 0, bit_sizes=[32, 64])
system_value("subgroup_lt_mask", 0, bit_sizes=[32, 64])
system_value("num_subgroups", 1)
system_value("subgroup_id", 1)
system_value("workgroup_size", 3)
# note: the definition of global_invocation_id_zero_base is based on
# (workgroup_id * workgroup_size) + local_invocation_id.
# it is *not* based on workgroup_id_zero_base, meaning the work group
# base is already accounted for, and the global base is additive on top of that
system_value("global_invocation_id", 3, bit_sizes=[32, 64])
system_value("global_invocation_id_zero_base", 3, bit_sizes=[32, 64])
system_value("base_global_invocation_id", 3, bit_sizes=[32, 64])
system_value("global_invocation_index", 1, bit_sizes=[32, 64])
system_value("work_dim", 1)
system_value("line_width", 1)
system_value("aa_line_width", 1)
# BASE=0 for global/shader, BASE=1 for local/function
system_value("scratch_base_ptr", 0, bit_sizes=[32,64], indices=[BASE])
system_value("constant_base_ptr", 0, bit_sizes=[32,64])
system_value("shared_base_ptr", 0, bit_sizes=[32,64])
system_value("global_base_ptr", 0, bit_sizes=[32,64])
# Address and size of a transform feedback buffer, indexed by BASE
system_value("xfb_address", 1, bit_sizes=[32,64], indices=[BASE])
system_value("xfb_size", 1, bit_sizes=[32], indices=[BASE])
# Address of the associated index buffer in a transform feedback program for an
# indexed draw. This will be used so transform feedback can pull the gl_VertexID
# from the index buffer.
system_value("xfb_index_buffer", 1, bit_sizes=[32,64])
system_value("frag_size", 2)
system_value("frag_invocation_count", 1)
# Whether smooth lines or polygon smoothing is enabled
system_value("poly_line_smooth_enabled", 1, bit_sizes=[1])
# System values for ray tracing.
system_value("ray_launch_id", 3)
system_value("ray_launch_size", 3)
system_value("ray_world_origin", 3)
system_value("ray_world_direction", 3)
system_value("ray_object_origin", 3)
system_value("ray_object_direction", 3)
system_value("ray_t_min", 1)
system_value("ray_t_max", 1)
system_value("ray_object_to_world", 3, indices=[COLUMN])
system_value("ray_world_to_object", 3, indices=[COLUMN])
system_value("ray_hit_kind", 1)
system_value("ray_flags", 1)
system_value("ray_geometry_index", 1)
system_value("ray_instance_custom_index", 1)
system_value("shader_record_ptr", 1, bit_sizes=[64])
system_value("cull_mask", 1)
system_value("ray_triangle_vertex_positions", 3, indices=[COLUMN])
# Driver-specific viewport scale/offset parameters.
#
# VC4 and V3D need to emit a scaled version of the position in the vertex
# shaders for binning, and having system values lets us move the math for that
# into NIR.
#
# Panfrost needs to implement all coordinate transformation in the
# vertex shader; system values allow us to share this routine in NIR.
system_value("viewport_x_scale", 1)
system_value("viewport_y_scale", 1)
system_value("viewport_z_scale", 1)
system_value("viewport_x_offset", 1)
system_value("viewport_y_offset", 1)
system_value("viewport_z_offset", 1)
system_value("viewport_scale", 3)
system_value("viewport_offset", 3)
# Pack xy scale and offset into a vec4 load (used by AMD NGG primitive culling)
system_value("viewport_xy_scale_and_offset", 4)
# Blend constant color values. Float values are clamped. Vectored versions are
# provided as well for driver convenience
system_value("blend_const_color_r_float", 1)
system_value("blend_const_color_g_float", 1)
system_value("blend_const_color_b_float", 1)
system_value("blend_const_color_a_float", 1)
system_value("blend_const_color_rgba", 4)
system_value("blend_const_color_rgba8888_unorm", 1)
system_value("blend_const_color_aaaa8888_unorm", 1)
# System values for gl_Color, for radeonsi which interpolates these in the
# shader prolog to handle two-sided color without recompiles and therefore
# doesn't handle these in the main shader part like normal varyings.
system_value("color0", 4)
system_value("color1", 4)
# System value for internal compute shaders in radeonsi.
system_value("user_data_amd", 8)
# In a fragment shader, the current sample mask. At the beginning of the shader,
# this is the same as load_sample_mask_in, but as the shader is executed, it may
# be affected by writes, discards, etc.
#
# No frontend generates this, but drivers may use it for internal lowerings.
intrinsic("load_sample_mask", [], 1, [], flags=[CAN_ELIMINATE], sysval=True,
bit_sizes=[32])
# Barycentric coordinate intrinsics.
#
# These set up the barycentric coordinates for a particular interpolation.
# The first four are for the simple cases: pixel, centroid, per-sample
# (at gl_SampleID), or pull model (1/W, 1/I, 1/J) at the pixel center. The next
# two handle interpolating at a specified sample location, or interpolating
# with a vec2 offset,
#
# The interp_mode index should be either the INTERP_MODE_SMOOTH or
# INTERP_MODE_NOPERSPECTIVE enum values.
#
# The vec2 value produced by these intrinsics is intended for use as the
# barycoord source of a load_interpolated_input intrinsic.
#
# The vec3 variants are intended to be used for input barycentric coordinates
# which are system values on most hardware, compared to the vec2 variants which
# interpolates input varyings.
def barycentric(name, dst_comp, src_comp=[]):
intrinsic("load_barycentric_" + name, src_comp=src_comp, dest_comp=dst_comp,
indices=[INTERP_MODE], flags=[CAN_ELIMINATE, CAN_REORDER])
# no sources.
barycentric("pixel", 2)
barycentric("coord_pixel", 3)
barycentric("centroid", 2)
barycentric("coord_centroid", 3)
barycentric("sample", 2)
barycentric("coord_sample", 3)
barycentric("model", 3)
# src[] = { sample_id }.
barycentric("at_sample", 2, [1])
barycentric("coord_at_sample", 3, [1])
# src[] = { offset.xy }.
barycentric("at_offset", 2, [2])
barycentric("at_offset_nv", 2, [1])
barycentric("coord_at_offset", 3, [2])
# Load sample position:
#
# Takes a sample # and returns a sample position. Used for lowering
# interpolateAtSample() to interpolateAtOffset()
intrinsic("load_sample_pos_from_id", src_comp=[1], dest_comp=2,
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("load_persp_center_rhw_ir3", dest_comp=1,
flags=[CAN_ELIMINATE, CAN_REORDER])
# Load texture scaling values:
#
# Takes a sampler # and returns 1/size values for multiplying to normalize
# texture coordinates. Used for lowering rect textures.
intrinsic("load_texture_scale", src_comp=[1], dest_comp=2,
flags=[CAN_ELIMINATE, CAN_REORDER])
# Fragment shader input interpolation delta intrinsic.
#
# For hw where fragment shader input interpolation is handled in shader, the
# load_fs_input_interp deltas intrinsics can be used to load the input deltas
# used for interpolation as follows:
#
# vec3 iid = load_fs_input_interp_deltas(varying_slot)
# vec2 bary = load_barycentric_*(...)
# float result = iid.x + iid.y * bary.y + iid.z * bary.x
intrinsic("load_fs_input_interp_deltas", src_comp=[1], dest_comp=3,
indices=[BASE, COMPONENT, IO_SEMANTICS], flags=[CAN_ELIMINATE, CAN_REORDER])
# Load operations pull data from some piece of GPU memory. All load
# operations operate in terms of offsets into some piece of theoretical
# memory. Loads from externally visible memory (UBO and SSBO) simply take a
# byte offset as a source. Loads from opaque memory (uniforms, inputs, etc.)
# take a base+offset pair where the nir_intrinsic_base() gives the location
# of the start of the variable being loaded and and the offset source is a
# offset into that variable.
#
# Uniform load operations have a nir_intrinsic_range() index that specifies the
# range (starting at base) of the data from which we are loading. If
# range == 0, then the range is unknown.
#
# UBO load operations have a nir_intrinsic_range_base() and
# nir_intrinsic_range() that specify the byte range [range_base,
# range_base+range] of the UBO that the src offset access must lie within.
#
# Some load operations such as UBO/SSBO load and per_vertex loads take an
# additional source to specify which UBO/SSBO/vertex to load from.
#
# The exact address type depends on the lowering pass that generates the
# load/store intrinsics. Typically, this is vec4 units for things such as
# varying slots and float units for fragment shader inputs. UBO and SSBO
# offsets are always in bytes.
def load(name, src_comp, indices=[], flags=[]):
intrinsic("load_" + name, src_comp, dest_comp=0, indices=indices,
flags=flags)
# src[] = { offset }.
load("uniform", [1], [BASE, RANGE, DEST_TYPE], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { buffer_index, offset }.
load("ubo", [-1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET, RANGE_BASE, RANGE], flags=[CAN_ELIMINATE, CAN_REORDER])
# src[] = { buffer_index, offset in vec4 units }. base is also in vec4 units.
load("ubo_vec4", [-1, 1], [ACCESS, BASE, COMPONENT], flags=[CAN_ELIMINATE, CAN_REORDER])
# src[] = { offset }.
load("input", [1], [BASE, RANGE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { vertex_id, offset }.
load("input_vertex", [1, 1], [BASE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { vertex, offset }.
load("per_vertex_input", [1, 1], [BASE, RANGE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { barycoord, offset }.
load("interpolated_input", [2, 1], [BASE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { buffer_index, offset }.
load("ssbo", [-1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { buffer_index }
load("ssbo_address", [1], [], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { offset }.
load("output", [1], [BASE, RANGE, COMPONENT, DEST_TYPE, IO_SEMANTICS], flags=[CAN_ELIMINATE])
# src[] = { vertex, offset }.
load("per_vertex_output", [1, 1], [BASE, RANGE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE])
# src[] = { primitive, offset }.
load("per_primitive_output", [1, 1], [BASE, COMPONENT, DEST_TYPE, IO_SEMANTICS], [CAN_ELIMINATE])
# src[] = { offset }.
load("shared", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { offset }.
load("task_payload", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { offset }.
load("push_constant", [1], [BASE, RANGE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { offset }.
load("constant", [1], [BASE, RANGE, ALIGN_MUL, ALIGN_OFFSET],
[CAN_ELIMINATE, CAN_REORDER])
# src[] = { address }.
load("global", [1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { address }.
load("global_2x32", [2], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { address }.
load("global_constant", [1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET],
[CAN_ELIMINATE, CAN_REORDER])
# src[] = { base_address, offset }.
load("global_constant_offset", [1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET],
[CAN_ELIMINATE, CAN_REORDER])
# src[] = { base_address, offset, bound }.
load("global_constant_bounded", [1, 1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET],
[CAN_ELIMINATE, CAN_REORDER])
# src[] = { address }.
load("kernel_input", [1], [BASE, RANGE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE, CAN_REORDER])
# src[] = { offset }.
load("scratch", [1], [ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# Stores work the same way as loads, except now the first source is the value
# to store and the second (and possibly third) source specify where to store
# the value. SSBO and shared memory stores also have a
# nir_intrinsic_write_mask()
def store(name, srcs, indices=[], flags=[]):
intrinsic("store_" + name, [0] + srcs, indices=indices, flags=flags)
# src[] = { value, offset }.
store("output", [1], [BASE, RANGE, WRITE_MASK, COMPONENT, SRC_TYPE, IO_SEMANTICS, IO_XFB, IO_XFB2])
# src[] = { value, vertex, offset }.
store("per_vertex_output", [1, 1], [BASE, RANGE, WRITE_MASK, COMPONENT, SRC_TYPE, IO_SEMANTICS])
# src[] = { value, primitive, offset }.
store("per_primitive_output", [1, 1], [BASE, RANGE, WRITE_MASK, COMPONENT, SRC_TYPE, IO_SEMANTICS])
# src[] = { value, block_index, offset }
store("ssbo", [-1, 1], [WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, offset }.
store("shared", [1], [BASE, WRITE_MASK, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, offset }.
store("task_payload", [1], [BASE, WRITE_MASK, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, address }.
store("global", [1], [WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, address }.
store("global_2x32", [2], [WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, offset }.
store("scratch", [1], [ALIGN_MUL, ALIGN_OFFSET, WRITE_MASK])
# Intrinsic to load/store from the call stack.
# BASE is the offset relative to the current position of the stack
# src[] = { }.
intrinsic("load_stack", [], dest_comp=0,
indices=[BASE, ALIGN_MUL, ALIGN_OFFSET, CALL_IDX, VALUE_ID],
flags=[CAN_ELIMINATE])
# src[] = { value }.
intrinsic("store_stack", [0],
indices=[BASE, ALIGN_MUL, ALIGN_OFFSET, WRITE_MASK, CALL_IDX, VALUE_ID])
# A bit field to implement SPIRV FragmentShadingRateKHR
# bit | name | description
# 0 | Vertical2Pixels | Fragment invocation covers 2 pixels vertically
# 1 | Vertical4Pixels | Fragment invocation covers 4 pixels vertically
# 2 | Horizontal2Pixels | Fragment invocation covers 2 pixels horizontally
# 3 | Horizontal4Pixels | Fragment invocation covers 4 pixels horizontally
intrinsic("load_frag_shading_rate", dest_comp=1, bit_sizes=[32],
flags=[CAN_ELIMINATE, CAN_REORDER])
# Whether the rasterized fragment is fully covered by the generating primitive.
system_value("fully_covered", dest_comp=1, bit_sizes=[1])
# OpenCL printf instruction
# First source is an index to the format string (u_printf_info element of the shader)
# Second source is a deref to a struct containing the args
# Dest is success or failure
intrinsic("printf", src_comp=[1, 1], dest_comp=1, bit_sizes=[32])
# Since most drivers will want to lower to just dumping args
# in a buffer, nir_lower_printf will do that, but requires
# the driver to at least provide a base location
system_value("printf_buffer_address", 1, bit_sizes=[32,64])
# Mesh shading MultiView intrinsics
system_value("mesh_view_count", 1)
load("mesh_view_indices", [1], [BASE, RANGE], [CAN_ELIMINATE, CAN_REORDER])
# Used to pass values from the preamble to the main shader.
# This should use something similar to Vulkan push constants and load_preamble
# should be relatively cheap.
# For now we only support accesses with a constant offset.
load("preamble", [], indices=[BASE], flags=[CAN_ELIMINATE, CAN_REORDER])
store("preamble", [], indices=[BASE])
# A 64-bit bitfield indexed by I/O location storing 1 in bits corresponding to
# varyings that have the flat interpolation specifier in the fragment shader and
# 0 otherwise
system_value("flat_mask", 1, bit_sizes=[64])
# Whether provoking vertex mode is last
system_value("provoking_last", 1)
# SPV_KHR_cooperative_matrix.
#
# Cooperative matrices are referred through derefs to variables,
# the destination of the operations appears as the first source,
# ordering follows SPIR-V operation.
#
# Load/Store include an extra source for stride, since that
# can be a _dynamically_ uniform value.
#
# Length takes a type not a value, that's encoded as a MATRIX_DESC.
intrinsic("cmat_construct", src_comp=[-1, 1])
intrinsic("cmat_load", src_comp=[-1, -1, 1], indices=[MATRIX_LAYOUT])
intrinsic("cmat_store", src_comp=[-1, -1, 1], indices=[MATRIX_LAYOUT])
intrinsic("cmat_length", src_comp=[], dest_comp=1, indices=[CMAT_DESC], bit_sizes=[32])
intrinsic("cmat_muladd", src_comp=[-1, -1, -1, -1], indices=[SATURATE, CMAT_SIGNED_MASK])
intrinsic("cmat_unary_op", src_comp=[-1, -1], indices=[ALU_OP])
intrinsic("cmat_binary_op", src_comp=[-1, -1, -1], indices=[ALU_OP])
intrinsic("cmat_scalar_op", src_comp=[-1, -1, -1], indices=[ALU_OP])
intrinsic("cmat_bitcast", src_comp=[-1, -1])
intrinsic("cmat_extract", src_comp=[-1, 1], dest_comp=1)
intrinsic("cmat_insert", src_comp=[-1, 1, -1, 1])
intrinsic("cmat_copy", src_comp=[-1, -1])
# IR3-specific version of most SSBO intrinsics. The only different
# compare to the originals is that they add an extra source to hold
# the dword-offset, which is needed by the backend code apart from
# the byte-offset already provided by NIR in one of the sources.
#
# NIR lowering pass 'ir3_nir_lower_io_offset' will replace the
# original SSBO intrinsics by these, placing the computed
# dword-offset always in the last source.
#
# The float versions are not handled because those are not supported
# by the backend.
store("ssbo_ir3", [1, 1, 1],
indices=[WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
load("ssbo_ir3", [1, 1, 1],
indices=[ACCESS, ALIGN_MUL, ALIGN_OFFSET], flags=[CAN_ELIMINATE])
intrinsic("ssbo_atomic_ir3", src_comp=[1, 1, 1, 1], dest_comp=1,
indices=[ACCESS, ATOMIC_OP])
intrinsic("ssbo_atomic_swap_ir3", src_comp=[1, 1, 1, 1, 1], dest_comp=1,
indices=[ACCESS, ATOMIC_OP])
# System values for freedreno geometry shaders.
system_value("vs_primitive_stride_ir3", 1)
system_value("vs_vertex_stride_ir3", 1)
system_value("gs_header_ir3", 1)
system_value("primitive_location_ir3", 1, indices=[DRIVER_LOCATION])
# System values for freedreno tessellation shaders.
system_value("hs_patch_stride_ir3", 1)
system_value("tess_factor_base_ir3", 2)
system_value("tess_param_base_ir3", 2)
system_value("tcs_header_ir3", 1)
system_value("rel_patch_id_ir3", 1)
# System values for freedreno compute shaders.
system_value("subgroup_id_shift_ir3", 1)
# System values for freedreno fragment shaders.
intrinsic("load_frag_coord_unscaled_ir3", dest_comp=4,
flags=[CAN_ELIMINATE, CAN_REORDER], bit_sizes=[32])
# IR3-specific intrinsics for tessellation control shaders. cond_end_ir3 end
# the shader when src0 is false and is used to narrow down the TCS shader to
# just thread 0 before writing out tessellation levels.
intrinsic("cond_end_ir3", src_comp=[1])
# end_patch_ir3 is used just before thread 0 exist the TCS and presumably
# signals the TE that the patch is complete and can be tessellated.
intrinsic("end_patch_ir3")
# Per-view gl_FragSizeEXT and gl_FragCoord offset.
intrinsic("load_frag_size_ir3", src_comp=[1], dest_comp=2, indices=[RANGE],
flags=[CAN_ELIMINATE, CAN_REORDER], bit_sizes=[32])
intrinsic("load_frag_offset_ir3", src_comp=[1], dest_comp=2, indices=[RANGE],
flags=[CAN_ELIMINATE, CAN_REORDER], bit_sizes=[32])
# IR3-specific load/store intrinsics. These access a buffer used to pass data
# between geometry stages - perhaps it's explicit access to the vertex cache.
# src[] = { value, offset }.
store("shared_ir3", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { offset }.
load("shared_ir3", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# IR3-specific load/store global intrinsics. They take a 64-bit base address
# and a 32-bit offset. The hardware will add the base and the offset, which
# saves us from doing 64-bit math on the base address.
# src[] = { value, address(vec2 of hi+lo uint32_t), offset }.
# const_index[] = { write_mask, align_mul, align_offset }
store("global_ir3", [2, 1], indices=[ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { address(vec2 of hi+lo uint32_t), offset }.
# const_index[] = { access, align_mul, align_offset }
# the alignment applies to the base address
load("global_ir3", [2, 1], indices=[ACCESS, ALIGN_MUL, ALIGN_OFFSET, RANGE_BASE, RANGE], flags=[CAN_ELIMINATE])
# IR3-specific bindless handle specifier. Similar to vulkan_resource_index, but
# without the binding because the hardware expects a single flattened index
# rather than a (binding, index) pair. We may also want to use this with GL.
# Note that this doesn't actually turn into a HW instruction.
intrinsic("bindless_resource_ir3", [1], dest_comp=1, indices=[DESC_SET], flags=[CAN_ELIMINATE, CAN_REORDER])
# IR3-specific intrinsics for shader preamble. These are meant to be used like
# this:
#
# if (preamble_start()) {
# if (subgroupElect()) {
# // preamble
# ...
# preamble_end();
# }
# }
# // main shader
# ...
intrinsic("preamble_start_ir3", [], dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
barrier("preamble_end_ir3")
# IR3-specific intrinsic for stc. Should be used in the shader preamble.
store("uniform_ir3", [], indices=[BASE])
# IR3-specific intrinsic for ldc.k. Copies UBO to constant file.
# base is the const file base in components, range is the amount to copy in
# vec4's.
intrinsic("copy_ubo_to_uniform_ir3", [1, 1], indices=[BASE, RANGE])
# IR3-specific intrinsic for ldg.k.
# base is an offset to apply to the address in bytes, range_base is the
# const file base in components, range is the amount to copy in vec4's.
intrinsic("copy_global_to_uniform_ir3", [2], indices=[BASE, RANGE_BASE, RANGE])
# IR3-specific intrinsic for stsc. Loads from push consts to constant file
# Should be used in the shader preamble.
intrinsic("copy_push_const_to_uniform_ir3", [1], indices=[BASE, RANGE])
intrinsic("brcst_active_ir3", dest_comp=1, src_comp=[1, 1], bit_sizes=src0,
indices=[CLUSTER_SIZE])
intrinsic("reduce_clusters_ir3", dest_comp=1, src_comp=[1], bit_sizes=src0,
indices=[REDUCTION_OP])
intrinsic("inclusive_scan_clusters_ir3", dest_comp=1, src_comp=[1],
bit_sizes=src0, indices=[REDUCTION_OP])
intrinsic("exclusive_scan_clusters_ir3", dest_comp=1, src_comp=[1, 1],
bit_sizes=src0, indices=[REDUCTION_OP])
# Intrinsics used by the Midgard/Bifrost blend pipeline. These are defined
# within a blend shader to read/write the raw value from the tile buffer,
# without applying any format conversion in the process. If the shader needs
# usable pixel values, it must apply format conversions itself.
#
# These definitions are generic, but they are explicitly vendored to prevent
# other drivers from using them, as their semantics is defined in terms of the
# Midgard/Bifrost hardware tile buffer and may not line up with anything sane.
# One notable divergence is sRGB, which is asymmetric: raw_input_pan requires
# an sRGB->linear conversion, but linear values should be written to
# raw_output_pan and the hardware handles linear->sRGB.
#
# store_raw_output_pan is used only for blend shaders, and writes out only a
# single 128-bit chunk. To support multisampling, the BASE index specifies the
# bas sample index written out.
# src[] = { value }
store("raw_output_pan", [], [IO_SEMANTICS, BASE])
store("combined_output_pan", [1, 1, 1, 4], [IO_SEMANTICS, COMPONENT, SRC_TYPE, DEST_TYPE])
load("raw_output_pan", [1], [IO_SEMANTICS], [CAN_ELIMINATE, CAN_REORDER])
# Loads the sampler paramaters <min_lod, max_lod, lod_bias>
# src[] = { sampler_index }
load("sampler_lod_parameters_pan", [1], flags=[CAN_ELIMINATE, CAN_REORDER])
# Like load_output but using a specified render target conversion descriptor
load("converted_output_pan", [1], indices=[DEST_TYPE, IO_SEMANTICS], flags=[CAN_ELIMINATE])
# Load the render target conversion descriptor for a given render target given
# in the BASE index. Converts to a type with size given by the source type.
# Valid in fragment and blend stages.
system_value("rt_conversion_pan", 1, indices=[BASE, SRC_TYPE], bit_sizes=[32])
# Loads the sample position array on Bifrost, in a packed Arm-specific format
system_value("sample_positions_pan", 1, bit_sizes=[64])
# In a fragment shader, is the framebuffer single-sampled? 0/~0 bool
system_value("multisampled_pan", 1, bit_sizes=[32])
# R600 specific instrincs
#
# location where the tesselation data is stored in LDS
system_value("tcs_in_param_base_r600", 4)
system_value("tcs_out_param_base_r600", 4)
system_value("tcs_rel_patch_id_r600", 1)
system_value("tcs_tess_factor_base_r600", 1)
# load as many components as needed giving per-component addresses
intrinsic("load_local_shared_r600", src_comp=[0], dest_comp=0, indices = [], flags = [CAN_ELIMINATE])
store("local_shared_r600", [1], [WRITE_MASK])
store("tf_r600", [])
# AMD GCN/RDNA specific intrinsics
# This barrier is a hint that prevents moving the instruction that computes
# src after this barrier. It's a constraint for the instruction scheduler.
# Otherwise it's identical to a move instruction.
# The VGPR version forces the src value to be stored in a VGPR, while the SGPR
# version enforces an SGPR.
intrinsic("optimization_barrier_vgpr_amd", dest_comp=0, src_comp=[0],
flags=[CAN_ELIMINATE])
intrinsic("optimization_barrier_sgpr_amd", dest_comp=0, src_comp=[0],
flags=[CAN_ELIMINATE])
# These are no-op intrinsics used as a simple source and user of SSA defs for testing.
intrinsic("unit_test_amd", src_comp=[0], indices=[BASE])
intrinsic("unit_test_uniform_amd", dest_comp=0, indices=[BASE])
intrinsic("unit_test_divergent_amd", dest_comp=0, indices=[BASE])
# Untyped buffer load/store instructions of arbitrary length.
# src[] = { descriptor, vector byte offset, scalar byte offset, index offset }
# The index offset is multiplied by the stride in the descriptor.
# The vector/scalar offsets are in bytes, BASE is a constant byte offset.
intrinsic("load_buffer_amd", src_comp=[4, 1, 1, 1], dest_comp=0, indices=[BASE, MEMORY_MODES, ACCESS], flags=[CAN_ELIMINATE])
# src[] = { store value, descriptor, vector byte offset, scalar byte offset, index offset }
intrinsic("store_buffer_amd", src_comp=[0, 4, 1, 1, 1], indices=[BASE, WRITE_MASK, MEMORY_MODES, ACCESS])
# Typed buffer load of arbitrary length, using a specified format.
# src[] = { descriptor, vector byte offset, scalar byte offset, index offset }
#
# The compiler backend is responsible for emitting correct HW instructions according to alignment, range etc.
# Users of this intrinsic must ensure that the first component being loaded is really the first component
# of the specified format, because range analysis assumes this.
# The size of the specified format also determines the memory range that this instruction is allowed to access.
#
# The index offset is multiplied by the stride in the descriptor, if any.
# The vector/scalar offsets are in bytes, BASE is a constant byte offset.
intrinsic("load_typed_buffer_amd", src_comp=[4, 1, 1, 1], dest_comp=0, indices=[BASE, MEMORY_MODES, ACCESS, FORMAT, ALIGN_MUL, ALIGN_OFFSET], flags=[CAN_ELIMINATE])
# src[] = { address, unsigned 32-bit offset }.
load("global_amd", [1, 1], indices=[BASE, ACCESS, ALIGN_MUL, ALIGN_OFFSET], flags=[CAN_ELIMINATE])
# src[] = { value, address, unsigned 32-bit offset }.
store("global_amd", [1, 1], indices=[BASE, ACCESS, ALIGN_MUL, ALIGN_OFFSET, WRITE_MASK])
# Same as shared_atomic_add, but with GDS. src[] = {store_val, gds_addr, m0}
intrinsic("gds_atomic_add_amd", src_comp=[1, 1, 1], dest_comp=1, indices=[BASE])
# src[] = { sample_id, num_samples }
intrinsic("load_sample_positions_amd", src_comp=[1, 1], dest_comp=2, flags=[CAN_ELIMINATE, CAN_REORDER])
# Descriptor where TCS outputs are stored for TES
system_value("ring_tess_offchip_amd", 4)
system_value("ring_tess_offchip_offset_amd", 1)
# Descriptor where TCS outputs are stored for the HW tessellator
system_value("ring_tess_factors_amd", 4)
system_value("ring_tess_factors_offset_amd", 1)
# Descriptor where ES outputs are stored for GS to read on GFX6-8
system_value("ring_esgs_amd", 4)
system_value("ring_es2gs_offset_amd", 1)
# Address of the task shader draw ring (used for VARYING_SLOT_TASK_COUNT)
system_value("ring_task_draw_amd", 4)
# Address of the task shader payload ring (used for all other outputs)
system_value("ring_task_payload_amd", 4)
# Address of the mesh shader scratch ring (used for excess mesh shader outputs)
system_value("ring_mesh_scratch_amd", 4)
system_value("ring_mesh_scratch_offset_amd", 1)
# Pointer into the draw and payload rings
system_value("task_ring_entry_amd", 1)
# Descriptor where NGG attributes are stored on GFX11.
system_value("ring_attr_amd", 4)
system_value("ring_attr_offset_amd", 1)
# Load provoking vertex info
system_value("provoking_vtx_amd", 1)
# Load rasterization primitive
system_value("rasterization_primitive_amd", 1);
# Number of patches processed by each TCS workgroup
system_value("tcs_num_patches_amd", 1)
# Whether TCS should store tessellation level outputs for TES to read
system_value("tcs_tess_levels_to_tes_amd", dest_comp=1, bit_sizes=[1])
# Tessellation primitive mode for TCS
system_value("tcs_primitive_mode_amd", 1)
# Relative tessellation patch ID within the current workgroup
system_value("tess_rel_patch_id_amd", 1)
# Vertex offsets used for GS per-vertex inputs
system_value("gs_vertex_offset_amd", 1, [BASE])
# Number of rasterization samples
system_value("rasterization_samples_amd", 1)
# Descriptor where GS outputs are stored for GS copy shader to read on GFX6-9
system_value("ring_gsvs_amd", 4, indices=[STREAM_ID])
# Write offset in gsvs ring for legacy GS shader
system_value("ring_gs2vs_offset_amd", 1)
# Streamout configuration
system_value("streamout_config_amd", 1)
# Position to write within the streamout buffers
system_value("streamout_write_index_amd", 1)
# Offset to write within a streamout buffer
system_value("streamout_offset_amd", 1, indices=[BASE])
# AMD merged shader intrinsics
# Whether the current invocation index in the subgroup is less than the source. The source must be
# subgroup uniform and bits 0-7 must be less than or equal to the wave size.
intrinsic("is_subgroup_invocation_lt_amd", src_comp=[1], dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# AMD NGG intrinsics
# Number of initial input vertices in the current workgroup.
system_value("workgroup_num_input_vertices_amd", 1)
# Number of initial input primitives in the current workgroup.
system_value("workgroup_num_input_primitives_amd", 1)
# For NGG passthrough mode only. Pre-packed argument for export_primitive_amd.
system_value("packed_passthrough_primitive_amd", 1)
# Whether NGG should execute shader query for pipeline statistics.
system_value("pipeline_stat_query_enabled_amd", dest_comp=1, bit_sizes=[1])
# Whether NGG should execute shader query for primitive generated.
system_value("prim_gen_query_enabled_amd", dest_comp=1, bit_sizes=[1])
# Whether NGG should execute shader query for primitive streamouted.
system_value("prim_xfb_query_enabled_amd", dest_comp=1, bit_sizes=[1])
# Merged wave info. Bits 0-7 are the ES thread count, 8-15 are the GS thread count, 16-24 is the
# GS Wave ID, 24-27 is the wave index in the workgroup, and 28-31 is the workgroup size in waves.
system_value("merged_wave_info_amd", dest_comp=1)
# Global ID for GS waves on GCN/RDNA legacy GS.
system_value("gs_wave_id_amd", dest_comp=1)
# Whether the shader should clamp vertex color outputs to [0, 1].
system_value("clamp_vertex_color_amd", dest_comp=1, bit_sizes=[1])
# Whether the shader should cull front facing triangles.
intrinsic("load_cull_front_face_enabled_amd", dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# Whether the shader should cull back facing triangles.
intrinsic("load_cull_back_face_enabled_amd", dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# True if face culling should use CCW (false if CW).
intrinsic("load_cull_ccw_amd", dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# Whether the shader should cull small primitives that are not visible in a pixel.
intrinsic("load_cull_small_primitives_enabled_amd", dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# Whether any culling setting is enabled in the shader.
intrinsic("load_cull_any_enabled_amd", dest_comp=1, bit_sizes=[1], flags=[CAN_ELIMINATE])
# Small primitive culling precision
intrinsic("load_cull_small_prim_precision_amd", dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE, CAN_REORDER])
# Initial edge flags in a Vertex Shader, packed into the format the HW needs for primitive export.
intrinsic("load_initial_edgeflags_amd", src_comp=[], dest_comp=1, bit_sizes=[32], indices=[])
# Corresponds to s_sendmsg in the GCN/RDNA ISA, src[] = { m0_content }, BASE = imm
intrinsic("sendmsg_amd", src_comp=[1], indices=[BASE])
# Overwrites VS input registers, for use with vertex compaction after culling. src = {vertex_id, instance_id}.
intrinsic("overwrite_vs_arguments_amd", src_comp=[1, 1], indices=[])
# Overwrites TES input registers, for use with vertex compaction after culling. src = {tes_u, tes_v, rel_patch_id, patch_id}.
intrinsic("overwrite_tes_arguments_amd", src_comp=[1, 1, 1, 1], indices=[])
# The address of the sbt descriptors.
system_value("sbt_base_amd", 1, bit_sizes=[64])
# 1. HW descriptor
# 2. BVH node(64-bit pointer as 2x32 ...)
# 3. ray extent
# 4. ray origin
# 5. ray direction
# 6. inverse ray direction (componentwise 1.0/ray direction)
intrinsic("bvh64_intersect_ray_amd", [4, 2, 1, 3, 3, 3], 4, flags=[CAN_ELIMINATE, CAN_REORDER])
# Return of a callable in raytracing pipelines
intrinsic("rt_return_amd")
# offset into scratch for the input callable data in a raytracing pipeline.
system_value("rt_arg_scratch_offset_amd", 1)
# Whether to call the anyhit shader for an intersection in an intersection shader.
system_value("intersection_opaque_amd", 1, bit_sizes=[1])
# pointer to the next resume shader
system_value("resume_shader_address_amd", 1, bit_sizes=[64], indices=[CALL_IDX])
# Scratch base of callable stack for ray tracing.
system_value("rt_dynamic_callable_stack_base_amd", 1)
# Ray Tracing Traversal inputs
system_value("sbt_offset_amd", 1)
system_value("sbt_stride_amd", 1)
system_value("accel_struct_amd", 1, bit_sizes=[64])
system_value("cull_mask_and_flags_amd", 1)
# 0. SBT Index
# 1. Ray Tmax
# 2. Primitive Id
# 3. Instance Addr
# 4. Geometry Id and Flags
# 5. Hit Kind
intrinsic("execute_closest_hit_amd", src_comp=[1, 1, 1, 1, 1, 1])
# 0. Ray Tmax
intrinsic("execute_miss_amd", src_comp=[1])
# Used for saving and restoring hit attribute variables.
# BASE=dword index
intrinsic("load_hit_attrib_amd", dest_comp=1, bit_sizes=[32], indices=[BASE])
intrinsic("store_hit_attrib_amd", src_comp=[1], indices=[BASE])
# Load forced VRS rates.
intrinsic("load_force_vrs_rates_amd", dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("load_scalar_arg_amd", dest_comp=0, bit_sizes=[32],
indices=[BASE, ARG_UPPER_BOUND_U32_AMD],
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("load_vector_arg_amd", dest_comp=0, bit_sizes=[32],
indices=[BASE, ARG_UPPER_BOUND_U32_AMD, FLAGS],
flags=[CAN_ELIMINATE, CAN_REORDER])
store("scalar_arg_amd", [], [BASE])
store("vector_arg_amd", [], [BASE])
# src[] = { 32/64-bit base address, 32-bit offset }.
intrinsic("load_smem_amd", src_comp=[1, 1], dest_comp=0, bit_sizes=[32],
indices=[ALIGN_MUL, ALIGN_OFFSET],
flags=[CAN_ELIMINATE, CAN_REORDER])
# src[] = { offset }.
intrinsic("load_shared2_amd", [1], dest_comp=2, indices=[OFFSET0, OFFSET1, ST64], flags=[CAN_ELIMINATE])
# src[] = { value, offset }.
intrinsic("store_shared2_amd", [2, 1], indices=[OFFSET0, OFFSET1, ST64])
# Vertex stride in LS-HS buffer
system_value("lshs_vertex_stride_amd", 1)
# Vertex stride in ES-GS buffer
system_value("esgs_vertex_stride_amd", 1)
# Per patch data offset in HS VRAM output buffer
system_value("hs_out_patch_data_offset_amd", 1)
# line_width * 0.5 / abs(viewport_scale[2])
system_value("clip_half_line_width_amd", 2)
# Number of vertices in a primitive
system_value("num_vertices_per_primitive_amd", 1)
# Load streamout buffer desc
# BASE = buffer index
intrinsic("load_streamout_buffer_amd", dest_comp=4, indices=[BASE], bit_sizes=[32], flags=[CAN_ELIMINATE, CAN_REORDER])
# An ID for each workgroup ordered by primitve sequence
system_value("ordered_id_amd", 1)
# Add src1 to global streamout buffer offsets in the specified order.
# Only 1 lane must be active.
# src[] = { ordered_id, counter }
# WRITE_MASK = mask for counter channel to update
intrinsic("ordered_xfb_counter_add_gfx11_amd", dest_comp=0, src_comp=[1, 0], indices=[WRITE_MASK], bit_sizes=[32])
# Subtract from global streamout buffer offsets. Used to fix up the offsets
# when we overflow streamout buffers.
# src[] = { offsets }
# WRITE_MASK = mask of offsets to subtract
intrinsic("xfb_counter_sub_gfx11_amd", src_comp=[0], indices=[WRITE_MASK], bit_sizes=[32])
# Provoking vertex index in a primitive
system_value("provoking_vtx_in_prim_amd", 1)
# Atomically add current wave's primitive count to query result
# * GS emitted primitive is primitive emitted by any GS stream
# * generated primitive is primitive that has been produced for that stream by VS/TES/GS
# * streamout primitve is primitve that has been written to xfb buffer, may be different
# than generated primitive when xfb buffer is too small to hold more primitives
# src[] = { primitive_count }.
intrinsic("atomic_add_gs_emit_prim_count_amd", [1])
intrinsic("atomic_add_gen_prim_count_amd", [1], indices=[STREAM_ID])
intrinsic("atomic_add_xfb_prim_count_amd", [1], indices=[STREAM_ID])
# Atomically add current shader's invocation count to query result
# src[] = { invocation_count }.
intrinsic("atomic_add_shader_invocation_count_amd", [1])
# LDS offset for scratch section in NGG shader
system_value("lds_ngg_scratch_base_amd", 1)
# LDS offset for NGG GS shader vertex emit
system_value("lds_ngg_gs_out_vertex_base_amd", 1)
# AMD GPU shader output export instruction
# src[] = { export_value, row }
# BASE = export target
# FLAGS = AC_EXP_FLAG_*
intrinsic("export_amd", [0], indices=[BASE, WRITE_MASK, FLAGS])
intrinsic("export_row_amd", [0, 1], indices=[BASE, WRITE_MASK, FLAGS])
# Export dual source blend outputs with swizzle operation
# src[] = { mrt0, mrt1 }
intrinsic("export_dual_src_blend_amd", [0, 0], indices=[WRITE_MASK])
# Alpha test reference value
system_value("alpha_reference_amd", 1)
# Whether to enable barycentric optimization
system_value("barycentric_optimize_amd", dest_comp=1, bit_sizes=[1])
# Copy the input into a register which will remain valid for entire quads, even in control flow.
# This should only be used directly for texture sources.
intrinsic("strict_wqm_coord_amd", src_comp=[0], dest_comp=0, bit_sizes=[32], indices=[BASE],
flags=[CAN_ELIMINATE])
intrinsic("cmat_muladd_amd", src_comp=[16, 16, 0], dest_comp=0, bit_sizes=src2,
indices=[SATURATE, CMAT_SIGNED_MASK], flags=[CAN_ELIMINATE])
# Get the debug log buffer descriptor.
intrinsic("load_debug_log_desc_amd", bit_sizes=[32], dest_comp=4, flags=[CAN_ELIMINATE, CAN_REORDER])
system_value("ray_tracing_stack_base_lvp", 1)
system_value("shader_call_data_offset_lvp", 1)
# V3D-specific instrinc for tile buffer color reads.
#
# The hardware requires that we read the samples and components of a pixel
# in order, so we cannot eliminate or remove any loads in a sequence.
#
# src[] = { render_target }
# BASE = sample index
load("tlb_color_v3d", [1], [BASE, COMPONENT], [])
# V3D-specific instrinc for per-sample tile buffer color writes.
#
# The driver backend needs to identify per-sample color writes and emit
# specific code for them.
#
# src[] = { value, render_target }
# BASE = sample index
store("tlb_sample_color_v3d", [1], [BASE, COMPONENT, SRC_TYPE], [])
# V3D-specific intrinsic to load the number of layers attached to
# the target framebuffer
intrinsic("load_fb_layers_v3d", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
# V3D-specific intrinsic to load W coordinate from the fragment shader payload
intrinsic("load_fep_w_v3d", dest_comp=1, flags=[CAN_ELIMINATE, CAN_REORDER])
# Active invocation index within the subgroup.
# Equivalent to popcount(ballot(true) & ((1 << subgroup_invocation) - 1))
system_value("active_subgroup_invocation_agx", 1)
# With [0, 1] clipping, no transform is needed on the output z' = z. But with [-1,
# 1] clipping, we need to transform z' = (z + w) / 2. We express both cases as a
# lerp between z and w, where this is the lerp coefficient: 0 for [0, 1] and 0.5
# for [-1, 1].
system_value("clip_z_coeff_agx", 1)
# mesa_prim for the input topology (in a geometry shader)
system_value("input_topology_agx", 1)
# Load a bindless sampler handle mapping a binding table sampler.
intrinsic("load_sampler_handle_agx", [1], 1, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[16])
# Load a bindless texture handle mapping a binding table texture.
intrinsic("load_texture_handle_agx", [1], 2, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[32])
# Given a vec2 bindless texture handle, load the address of the texture
# descriptor described by that vec2. This allows inspecting the descriptor from
# the shader. This does not actually load the content of the descriptor, only
# the content of the handle (which is the address of the descriptor).
intrinsic("load_from_texture_handle_agx", [2], 1, [],
flags=[CAN_ELIMINATE, CAN_REORDER],
bit_sizes=[64])
# Load the coefficient register corresponding to a given fragment shader input.
# Coefficient registers are vec3s that are dotted with <x, y, 1> to interpolate
# the input, where x and y are relative to the 32x32 supertile.
intrinsic("load_coefficients_agx", [1],
bit_sizes = [32],
dest_comp = 3,
indices=[COMPONENT, IO_SEMANTICS, INTERP_MODE],
flags=[CAN_ELIMINATE, CAN_REORDER])
# src[] = { value, index }
# Store a vertex shader output to the Unified Vertex Store (UVS). Indexed by UVS
# index, which must be assigned by the driver based on the linked fragment
# shader's interpolation qualifiers. This corresponds to the native instruction.
store("uvs_agx", [1], [], [CAN_REORDER])
# Driver intrinsic to map a location to a UVS index. This is generated when
# lowering store_output to store_uvs_agx, and must be lowered by the driver.
intrinsic("load_uvs_index_agx", dest_comp = 1, bit_sizes=[16],
indices=[IO_SEMANTICS], flags=[CAN_ELIMINATE, CAN_REORDER])
# Load/store a pixel in local memory. This operation is formatted, with
# conversion between the specified format and the implied register format of the
# source/destination (for store/loads respectively). This mostly matters for
# converting between floating-point registers and normalized memory formats.
#
# The format is the pipe_format of the local memory (the source), see
# agx_internal_formats.h for the supported list.
#
# Logically, this loads/stores a single sample. The sample to load is
# specified by the bitfield sample mask source. However, for stores multiple
# bits of the sample mask may be set, which will replicate the value. For
# pixel rate shading, use 0xFF as the mask to store to all samples regardless of
# the sample count.
#
# All calculations are relative to an immediate byte offset into local
# memory, which acts relative to the start of the sample. These instructions
# logically access:
#
# (((((y * tile_width) + x) * nr_samples) + sample) * sample_stride) + offset
#
# src[] = { sample mask }
# base = offset
load("local_pixel_agx", [1], [BASE, FORMAT], [CAN_REORDER, CAN_ELIMINATE])
# src[] = { value, sample mask }
# base = offset
store("local_pixel_agx", [1], [BASE, WRITE_MASK, FORMAT], [CAN_REORDER])
# Combined depth/stencil emit, applying to a mask of samples. base indicates
# which to write (1 = depth, 2 = stencil, 3 = both).
#
# src[] = { sample mask, depth, stencil }
intrinsic("store_zs_agx", [1, 1, 1], indices=[BASE], flags=[])
# Store a block from local memory into a bound image. Used to write out render
# targets within the end-of-tile shader, although it is valid in general compute
# kernels.
#
# The format is the pipe_format of the local memory (the source), see
# agx_internal_formats.h for the supported list. The image format is
# specified in the PBE descriptor.
#
# The image dimension is used to distinguish multisampled images from
# non-multisampled images. It must be 2D or MS.
#
# src[] = { image index, logical offset within shared memory, layer }
intrinsic("block_image_store_agx", [1, 1, 1], bit_sizes=[32, 16, 16],
indices=[FORMAT, IMAGE_DIM, IMAGE_ARRAY], flags=[CAN_REORDER])
# Formatted load/store. The format is the pipe_format in memory (see
# agx_internal_formats.h for the supported list). This accesses:
#
# address + extend(index) << (format shift + shift)
#
# The nir_intrinsic_base() index encodes the shift. The sign_extend index
# determines whether sign- or zero-extension is used for the index.
#
# All loads and stores on AGX uses these hardware instructions, so while these are
# logically load_global_agx/load_global_constant_agx/store_global_agx, the
# _global is omitted as it adds nothing.
#
# src[] = { address, index }.
load("agx", [1, 1], [ACCESS, BASE, FORMAT, SIGN_EXTEND], [CAN_ELIMINATE])
load("constant_agx", [1, 1], [ACCESS, BASE, FORMAT, SIGN_EXTEND],
[CAN_ELIMINATE, CAN_REORDER])
# src[] = { value, address, index }.
store("agx", [1, 1], [ACCESS, BASE, FORMAT, SIGN_EXTEND])
# Logical complement of load_front_face, mapping to an AGX system value
system_value("back_face_agx", 1, bit_sizes=[1, 32])
# Load the base address of an indexed vertex attribute (for lowering).
intrinsic("load_vbo_base_agx", src_comp=[1], dest_comp=1, bit_sizes=[64],
flags=[CAN_ELIMINATE, CAN_REORDER])
# When vertex robustness is enabled, loads the maximum valid attribute index for
# a given attribute. This is unsigned: the driver ensures that at least one
# vertex is always valid to load, directing loads to a zero sink if necessary.
intrinsic("load_attrib_clamp_agx", src_comp=[1], dest_comp=1,
bit_sizes=[32], flags=[CAN_ELIMINATE, CAN_REORDER])
# Load a driver-internal system value from a given system value set at a given
# binding within the set. This is used for correctness when lowering things like
# UBOs with merged shaders.
#
# The FLAGS are used internally for loading the index of the uniform itself,
# rather than the contents, used for lowering bindless handles (which encode
# uniform indices as immediates in the NIR for technical reasons).
load("sysval_agx", [], [DESC_SET, BINDING, FLAGS], [CAN_REORDER, CAN_ELIMINATE])
# Write out a sample mask for a targeted subset of samples, specified in the two
# masks. Maps to the corresponding AGX instruction, the actual workings are
# documented elsewhere as they are too complicated for this comment.
intrinsic("sample_mask_agx", src_comp=[1, 1])
# Discard a subset of samples given by a specified sample mask. This acts like a
# per-sample discard, or an inverted accumulating gl_SampleMask write. The
# compiler will lower to sample_mask_agx, but that lowering is nontrivial as
# sample_mask_agx also triggers depth/stencil testing.
intrinsic("discard_agx", src_comp=[1])
# For a given row of the polygon stipple given as an integer source in [0, 31],
# load the 32-bit stipple pattern for that row.
intrinsic("load_polygon_stipple_agx", src_comp=[1], dest_comp=1, bit_sizes=[32],
flags=[CAN_ELIMINATE, CAN_ELIMINATE])
# The fixed-function sample mask specified in the API (e.g. glSampleMask)
system_value("api_sample_mask_agx", 1, bit_sizes=[16])
# Bit mask of samples currently being shaded. For API-level sample shading, this
# will usually equal (1 << sample_id). Multiple bits can be set when sample
# shading is only enabled due to framebuffer fetch, and the framebuffer has
# multiple samples with the same value.
#
# Used as a loop variable with dynamic sample shading.
system_value("active_samples_agx", 1, bit_sizes=[16])
# Loads the sample position array as fixed point packed into a 32-bit word
system_value("sample_positions_agx", 1, bit_sizes=[32])
# In a non-monolithic fragment shader part, returns whether this shader part is
# responsible for Z/S testing after its final discard. ~0/0 boolean.
system_value("shader_part_tests_zs_agx", 1, bit_sizes=[16])
# In a fragment shader, returns the log2 of the number of samples in the
# tilebuffer. This is the unprocessed value written in the corresponding USC
# word. Used to determine whether sample mask writes have any effect when sample
# count is dynamic.
system_value("samples_log2_agx", 1, bit_sizes=[16])
# Loads the fixed-function glPointSize() value, or zero if the
# shader-supplied value should be used.
system_value("fixed_point_size_agx", 1, bit_sizes=[32])
# Bit mask of TEX locations that are replaced with point sprites
system_value("tex_sprite_mask_agx", 1, bit_sizes=[16])
# Image loads go through the texture cache, which is not coherent with the PBE
# or memory access, so fencing is necessary for writes to become visible.
# Make writes via main memory (image atomics) visible for texturing.
barrier("fence_pbe_to_tex_agx")
# Make writes from global memory instructions (atomics) visible for texturing.
barrier("fence_mem_to_tex_agx")
# Variant of fence_pbe_to_tex_agx specialized to stores in pixel shaders that
# act like render target writes, in conjunction with fragment interlock.
barrier("fence_pbe_to_tex_pixel_agx")
# Unknown fence used in the helper program on exit.
barrier("fence_helper_exit_agx")
# Pointer to the buffer passing outputs VS->TCS, VS->GS, or TES->GS linkage.
system_value("vs_output_buffer_agx", 1, bit_sizes=[64])
# Indirect for the above, used for indirect draws.
system_value("vs_output_buffer_ptr_agx", 1, bit_sizes=[64])
# Mask of VS->TCS, VS->GS, or TES->GS outputs. This is modelled as a sysval
# directly so it can be dynamic with shader objects or constant folded with
# pipelines (including GPL)
system_value("vs_outputs_agx", 1, bit_sizes=[64])
# Address of state for AGX input assembly lowering for geometry/tessellation
system_value("input_assembly_buffer_agx", 1, bit_sizes=[64])
# Address of the parameter buffer for AGX geometry shaders
system_value("geometry_param_buffer_agx", 1, bit_sizes=[64])
# Address of the parameter buffer for AGX tessellation shaders
system_value("tess_param_buffer_agx", 1, bit_sizes=[64])
# Address of the pipeline statistic query result indexed by BASE
system_value("stat_query_address_agx", 1, bit_sizes=[64], indices=[BASE])
# Helper shader intrinsics
# src[] = { value }.
intrinsic("doorbell_agx", src_comp=[1])
# src[] = { index, stack_address }.
intrinsic("stack_map_agx", src_comp=[1, 1])
# src[] = { index }.
# dst[] = { stack_address }.
intrinsic("stack_unmap_agx", src_comp=[1], dest_comp=1, bit_sizes=[32])
# dst[] = { GPU core ID }.
system_value("core_id_agx", 1, bit_sizes=[32])
# dst[] = { Helper operation type }.
load("helper_op_id_agx", [], [], [CAN_ELIMINATE])
# dst[] = { Helper argument low 32 bits }.
load("helper_arg_lo_agx", [], [], [CAN_ELIMINATE])
# dst[] = { Helper argument high 32 bits }.
load("helper_arg_hi_agx", [], [], [CAN_ELIMINATE])
# Export a vector. At the end of the shader part, the source is copied to the
# indexed GPRs starting at BASE. Exports must not overlap within a shader part.
# Must only appear in the last block of the shader part.
intrinsic("export_agx", [0], indices=[BASE])
# Load an exported vector at the beginning of the shader part from GPRs starting
# at BASE. Must only appear in the first block of the shader part.
load("exported_agx", [], [BASE], [CAN_ELIMINATE])
# Intel-specific query for loading from the isl_image_param struct passed
# into the shader as a uniform. The variable is a deref to the image
# variable. The const index specifies which of the six parameters to load.
intrinsic("image_deref_load_param_intel", src_comp=[1], dest_comp=0,
indices=[BASE], flags=[CAN_ELIMINATE, CAN_REORDER])
image("load_raw_intel", src_comp=[1], dest_comp=0,
flags=[CAN_ELIMINATE])
image("store_raw_intel", src_comp=[1, 0])
# Intrinsic to load a block of at least 32B of constant data from a 64-bit
# global memory address. The memory address must be uniform and 32B-aligned.
# The second source is a predicate which indicates whether or not to actually
# do the load.
# src[] = { address, predicate }.
intrinsic("load_global_const_block_intel", src_comp=[1, 1], dest_comp=0,
bit_sizes=[32], indices=[BASE], flags=[CAN_ELIMINATE, CAN_REORDER])
# Number of data items being operated on for a SIMD program.
system_value("simd_width_intel", 1)
# Load a relocatable 32-bit value
intrinsic("load_reloc_const_intel", dest_comp=1, bit_sizes=[32],
indices=[PARAM_IDX], flags=[CAN_ELIMINATE, CAN_REORDER])
# 1 component 32bit surface index that can be used for bindless or BTI heaps
#
# This intrinsic is used to figure out what UBOs accesses could be promoted to
# push constants. To allow promoting a load_ubo to push constants, we need to
# know that the surface & offset are constants. If we want to use the bindless
# heap for this we have to build the surface index with a pushed constant for
# the descriptor set which prevents us from doing a nir_src_is_const() check.
# With this intrinsic, we can just check the surface_index src with
# nir_src_is_const() and ignore set_offset.
#
# src[] = { set_offset, surface_index, array_index, bindless_base_offset }
intrinsic("resource_intel", dest_comp=1, bit_sizes=[32],
src_comp=[1, 1, 1, 1],
indices=[DESC_SET, BINDING, RESOURCE_ACCESS_INTEL, RESOURCE_BLOCK_INTEL],
flags=[CAN_ELIMINATE, CAN_REORDER])
# 64-bit global address for a Vulkan descriptor set
# src[0] = { set }
intrinsic("load_desc_set_address_intel", dest_comp=1, bit_sizes=[64],
src_comp=[1], flags=[CAN_ELIMINATE, CAN_REORDER])
# Base offset for a given set in the flatten array of dynamic offsets
# src[0] = { set }
intrinsic("load_desc_set_dynamic_index_intel", dest_comp=1, bit_sizes=[32],
src_comp=[1], flags=[CAN_ELIMINATE, CAN_REORDER])
# OpSubgroupBlockReadINTEL and OpSubgroupBlockWriteINTEL from SPV_INTEL_subgroups.
intrinsic("load_deref_block_intel", dest_comp=0, src_comp=[-1],
indices=[ACCESS], flags=[CAN_ELIMINATE])
intrinsic("store_deref_block_intel", src_comp=[-1, 0], indices=[WRITE_MASK, ACCESS])
# src[] = { address }.
load("global_block_intel", [1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { buffer_index, offset }.
load("ssbo_block_intel", [-1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { offset }.
load("shared_block_intel", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# src[] = { value, address }.
store("global_block_intel", [1], [WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, block_index, offset }
store("ssbo_block_intel", [-1, 1], [WRITE_MASK, ACCESS, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { value, offset }.
store("shared_block_intel", [1], [BASE, WRITE_MASK, ALIGN_MUL, ALIGN_OFFSET])
# src[] = { address }.
load("global_constant_uniform_block_intel", [1],
[ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE, CAN_REORDER])
# Similar to load_global_const_block_intel but for UBOs
# offset should be uniform
# src[] = { buffer_index, offset }.
load("ubo_uniform_block_intel", [-1, 1],
[ACCESS, ALIGN_MUL, ALIGN_OFFSET, RANGE_BASE, RANGE], [CAN_ELIMINATE, CAN_REORDER])
# Similar to load_global_const_block_intel but for SSBOs
# offset should be uniform
# src[] = { buffer_index, offset }.
load("ssbo_uniform_block_intel", [-1, 1], [ACCESS, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# Similar to load_global_const_block_intel but for shared memory
# src[] = { offset }.
load("shared_uniform_block_intel", [1], [BASE, ALIGN_MUL, ALIGN_OFFSET], [CAN_ELIMINATE])
# Intrinsics for Intel mesh shading
system_value("mesh_inline_data_intel", 1, [ALIGN_OFFSET], bit_sizes=[32, 64])
# Intrinsics for Intel bindless thread dispatch
# BASE=brw_topoloy_id
system_value("topology_id_intel", 1, indices=[BASE])
system_value("btd_stack_id_intel", 1)
system_value("btd_global_arg_addr_intel", 1, bit_sizes=[64])
system_value("btd_local_arg_addr_intel", 1, bit_sizes=[64])
system_value("btd_resume_sbt_addr_intel", 1, bit_sizes=[64])
# src[] = { global_arg_addr, btd_record }
intrinsic("btd_spawn_intel", src_comp=[1, 1])
# RANGE=stack_size
intrinsic("btd_stack_push_intel", indices=[STACK_SIZE])
# src[] = { }
intrinsic("btd_retire_intel")
# Intel-specific ray-tracing intrinsic
# src[] = { globals, level, operation } SYNCHRONOUS=synchronous
intrinsic("trace_ray_intel", src_comp=[1, 1, 1], indices=[SYNCHRONOUS])
# System values used for ray-tracing on Intel
system_value("ray_base_mem_addr_intel", 1, bit_sizes=[64])
system_value("ray_hw_stack_size_intel", 1)
system_value("ray_sw_stack_size_intel", 1)
system_value("ray_num_dss_rt_stacks_intel", 1)
system_value("ray_hit_sbt_addr_intel", 1, bit_sizes=[64])
system_value("ray_hit_sbt_stride_intel", 1, bit_sizes=[16])
system_value("ray_miss_sbt_addr_intel", 1, bit_sizes=[64])
system_value("ray_miss_sbt_stride_intel", 1, bit_sizes=[16])
system_value("callable_sbt_addr_intel", 1, bit_sizes=[64])
system_value("callable_sbt_stride_intel", 1, bit_sizes=[16])
system_value("leaf_opaque_intel", 1, bit_sizes=[1])
system_value("leaf_procedural_intel", 1, bit_sizes=[1])
# Values :
# 0: AnyHit
# 1: ClosestHit
# 2: Miss
# 3: Intersection
system_value("btd_shader_type_intel", 1)
system_value("ray_query_global_intel", 1, bit_sizes=[64])
# Source 0: Accumulator matrix (type specified by DEST_TYPE)
# Source 1: A matrix (type specified by SRC_TYPE)
# Source 2: B matrix (type specified by SRC_TYPE)
#
# The matrix parameters are the slices owned by the invocation.
#
# The accumulator is source 0 because that is the source the intrinsic
# infrastructure in NIR uses to determine the number of components in the
# result.
intrinsic("dpas_intel", dest_comp=0, src_comp=[0, 0, 0],
indices=[DEST_TYPE, SRC_TYPE, SATURATE, SYSTOLIC_DEPTH, REPEAT_COUNT],
flags=[CAN_ELIMINATE])
# NVIDIA-specific intrinsics
intrinsic("load_sysval_nv", dest_comp=1, src_comp=[], bit_sizes=[32, 64],
indices=[ACCESS, BASE], flags=[CAN_ELIMINATE])
intrinsic("isberd_nv", dest_comp=1, src_comp=[1], bit_sizes=[32],
flags=[CAN_ELIMINATE, CAN_REORDER])
intrinsic("al2p_nv", dest_comp=1, src_comp=[1], bit_sizes=[32],
indices=[BASE, FLAGS], flags=[CAN_ELIMINATE, CAN_REORDER])
# src[] = { vtx, offset }.
# FLAGS is struct nak_nir_attr_io_flags
intrinsic("ald_nv", dest_comp=0, src_comp=[1, 1], bit_sizes=[32],
indices=[BASE, RANGE_BASE, RANGE, FLAGS, ACCESS],
flags=[CAN_ELIMINATE])
# src[] = { data, vtx, offset }.
# FLAGS is struct nak_nir_attr_io_flags
intrinsic("ast_nv", src_comp=[0, 1, 1],
indices=[BASE, RANGE_BASE, RANGE, FLAGS], flags=[])
# src[] = { inv_w, offset }.
intrinsic("ipa_nv", dest_comp=1, src_comp=[1, 1], bit_sizes=[32],
indices=[BASE, FLAGS], flags=[CAN_ELIMINATE, CAN_REORDER])
# FLAGS indicate if we load vertex_id == 2
intrinsic("ldtram_nv", dest_comp=2, bit_sizes=[32],
indices=[BASE, FLAGS], flags=[CAN_ELIMINATE, CAN_REORDER])
# NVIDIA-specific Geometry Shader intrinsics.
# These contain an additional integer source and destination with the primitive handle input/output.
intrinsic("emit_vertex_nv", dest_comp=1, src_comp=[1], indices=[STREAM_ID])
intrinsic("end_primitive_nv", dest_comp=1, src_comp=[1], indices=[STREAM_ID])
# Contains the final primitive handle and indicate the end of emission.
intrinsic("final_primitive_nv", src_comp=[1])
# src[] = { data }.
intrinsic("fs_out_nv", src_comp=[1], indices=[BASE], flags=[])
barrier("copy_fs_outputs_nv")
intrinsic("bar_set_nv", dest_comp=1, bit_sizes=[32], flags=[CAN_ELIMINATE])
intrinsic("bar_break_nv", dest_comp=1, bit_sizes=[32], src_comp=[1, 1])
# src[] = { bar, bar_set }
intrinsic("bar_sync_nv", src_comp=[1, 1])
# Stall until the given SSA value is available
intrinsic("ssa_bar_nv", src_comp=[1])
# NVIDIA-specific system values
system_value("warps_per_sm_nv", 1, bit_sizes=[32])
system_value("sm_count_nv", 1, bit_sizes=[32])
system_value("warp_id_nv", 1, bit_sizes=[32])
system_value("sm_id_nv", 1, bit_sizes=[32])
# In order to deal with flipped render targets, gl_PointCoord may be flipped
# in the shader requiring a shader key or extra instructions or it may be
# flipped in hardware based on a state bit. This version of gl_PointCoord
# is defined to be whatever thing the hardware can easily give you, so long as
# it's in normalized coordinates in the range [0, 1] across the point.
intrinsic("load_point_coord_maybe_flipped", dest_comp=2, bit_sizes=[32])
# Load texture size values:
#
# Takes a sampler # and returns width, height and depth. If texture is a array
# texture it returns width, height and array size. Used for txs lowering.
intrinsic("load_texture_size_etna", src_comp=[1], dest_comp=3,
flags=[CAN_ELIMINATE, CAN_REORDER])
# Zink specific intrinsics
# src[] = { field }.
load("push_constant_zink", [1], [COMPONENT], [CAN_ELIMINATE, CAN_REORDER])
system_value("shader_index", 1, bit_sizes=[32])
system_value("coalesced_input_count", 1, bit_sizes=[32])
# Initialize a payload array per scope
#
# 0. Payloads deref
# 1. Payload count
# 2. Node index
intrinsic("initialize_node_payloads", src_comp=[-1, 1, 1], indices=[EXECUTION_SCOPE])
# Optionally enqueue payloads after shader finished writing to them
intrinsic("enqueue_node_payloads", src_comp=[-1])
# Returns true if it has been called for every payload.
intrinsic("finalize_incoming_node_payload", src_comp=[-1], dest_comp=1)
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