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|
use super::{Block, BlockContext, Error, Instruction};
use crate::{
arena::Handle,
back::spv::{LocalType, LookupType},
TypeInner,
};
impl<'w> BlockContext<'w> {
pub(super) fn write_subgroup_ballot(
&mut self,
predicate: &Option<Handle<crate::Expression>>,
result: Handle<crate::Expression>,
block: &mut Block,
) -> Result<(), Error> {
self.writer.require_any(
"GroupNonUniformBallot",
&[spirv::Capability::GroupNonUniformBallot],
)?;
let vec4_u32_type_id = self.get_type_id(LookupType::Local(LocalType::Value {
vector_size: Some(crate::VectorSize::Quad),
scalar: crate::Scalar::U32,
pointer_space: None,
}));
let exec_scope_id = self.get_index_constant(spirv::Scope::Subgroup as u32);
let predicate = if let Some(predicate) = *predicate {
self.cached[predicate]
} else {
self.writer.get_constant_scalar(crate::Literal::Bool(true))
};
let id = self.gen_id();
block.body.push(Instruction::group_non_uniform_ballot(
vec4_u32_type_id,
id,
exec_scope_id,
predicate,
));
self.cached[result] = id;
Ok(())
}
pub(super) fn write_subgroup_operation(
&mut self,
op: &crate::SubgroupOperation,
collective_op: &crate::CollectiveOperation,
argument: Handle<crate::Expression>,
result: Handle<crate::Expression>,
block: &mut Block,
) -> Result<(), Error> {
use crate::SubgroupOperation as sg;
match *op {
sg::All | sg::Any => {
self.writer.require_any(
"GroupNonUniformVote",
&[spirv::Capability::GroupNonUniformVote],
)?;
}
_ => {
self.writer.require_any(
"GroupNonUniformArithmetic",
&[spirv::Capability::GroupNonUniformArithmetic],
)?;
}
}
let id = self.gen_id();
let result_ty = &self.fun_info[result].ty;
let result_type_id = self.get_expression_type_id(result_ty);
let result_ty_inner = result_ty.inner_with(&self.ir_module.types);
let (is_scalar, scalar) = match *result_ty_inner {
TypeInner::Scalar(kind) => (true, kind),
TypeInner::Vector { scalar: kind, .. } => (false, kind),
_ => unimplemented!(),
};
use crate::ScalarKind as sk;
let spirv_op = match (scalar.kind, *op) {
(sk::Bool, sg::All) if is_scalar => spirv::Op::GroupNonUniformAll,
(sk::Bool, sg::Any) if is_scalar => spirv::Op::GroupNonUniformAny,
(_, sg::All | sg::Any) => unimplemented!(),
(sk::Sint | sk::Uint, sg::Add) => spirv::Op::GroupNonUniformIAdd,
(sk::Float, sg::Add) => spirv::Op::GroupNonUniformFAdd,
(sk::Sint | sk::Uint, sg::Mul) => spirv::Op::GroupNonUniformIMul,
(sk::Float, sg::Mul) => spirv::Op::GroupNonUniformFMul,
(sk::Sint, sg::Max) => spirv::Op::GroupNonUniformSMax,
(sk::Uint, sg::Max) => spirv::Op::GroupNonUniformUMax,
(sk::Float, sg::Max) => spirv::Op::GroupNonUniformFMax,
(sk::Sint, sg::Min) => spirv::Op::GroupNonUniformSMin,
(sk::Uint, sg::Min) => spirv::Op::GroupNonUniformUMin,
(sk::Float, sg::Min) => spirv::Op::GroupNonUniformFMin,
(_, sg::Add | sg::Mul | sg::Min | sg::Max) => unimplemented!(),
(sk::Sint | sk::Uint, sg::And) => spirv::Op::GroupNonUniformBitwiseAnd,
(sk::Sint | sk::Uint, sg::Or) => spirv::Op::GroupNonUniformBitwiseOr,
(sk::Sint | sk::Uint, sg::Xor) => spirv::Op::GroupNonUniformBitwiseXor,
(sk::Bool, sg::And) => spirv::Op::GroupNonUniformLogicalAnd,
(sk::Bool, sg::Or) => spirv::Op::GroupNonUniformLogicalOr,
(sk::Bool, sg::Xor) => spirv::Op::GroupNonUniformLogicalXor,
(_, sg::And | sg::Or | sg::Xor) => unimplemented!(),
};
let exec_scope_id = self.get_index_constant(spirv::Scope::Subgroup as u32);
use crate::CollectiveOperation as c;
let group_op = match *op {
sg::All | sg::Any => None,
_ => Some(match *collective_op {
c::Reduce => spirv::GroupOperation::Reduce,
c::InclusiveScan => spirv::GroupOperation::InclusiveScan,
c::ExclusiveScan => spirv::GroupOperation::ExclusiveScan,
}),
};
let arg_id = self.cached[argument];
block.body.push(Instruction::group_non_uniform_arithmetic(
spirv_op,
result_type_id,
id,
exec_scope_id,
group_op,
arg_id,
));
self.cached[result] = id;
Ok(())
}
pub(super) fn write_subgroup_gather(
&mut self,
mode: &crate::GatherMode,
argument: Handle<crate::Expression>,
result: Handle<crate::Expression>,
block: &mut Block,
) -> Result<(), Error> {
self.writer.require_any(
"GroupNonUniformBallot",
&[spirv::Capability::GroupNonUniformBallot],
)?;
match *mode {
crate::GatherMode::BroadcastFirst | crate::GatherMode::Broadcast(_) => {
self.writer.require_any(
"GroupNonUniformBallot",
&[spirv::Capability::GroupNonUniformBallot],
)?;
}
crate::GatherMode::Shuffle(_) | crate::GatherMode::ShuffleXor(_) => {
self.writer.require_any(
"GroupNonUniformShuffle",
&[spirv::Capability::GroupNonUniformShuffle],
)?;
}
crate::GatherMode::ShuffleDown(_) | crate::GatherMode::ShuffleUp(_) => {
self.writer.require_any(
"GroupNonUniformShuffleRelative",
&[spirv::Capability::GroupNonUniformShuffleRelative],
)?;
}
}
let id = self.gen_id();
let result_ty = &self.fun_info[result].ty;
let result_type_id = self.get_expression_type_id(result_ty);
let exec_scope_id = self.get_index_constant(spirv::Scope::Subgroup as u32);
let arg_id = self.cached[argument];
match *mode {
crate::GatherMode::BroadcastFirst => {
block
.body
.push(Instruction::group_non_uniform_broadcast_first(
result_type_id,
id,
exec_scope_id,
arg_id,
));
}
crate::GatherMode::Broadcast(index)
| crate::GatherMode::Shuffle(index)
| crate::GatherMode::ShuffleDown(index)
| crate::GatherMode::ShuffleUp(index)
| crate::GatherMode::ShuffleXor(index) => {
let index_id = self.cached[index];
let op = match *mode {
crate::GatherMode::BroadcastFirst => unreachable!(),
// Use shuffle to emit broadcast to allow the index to
// be dynamically uniform on Vulkan 1.1. The argument to
// OpGroupNonUniformBroadcast must be a constant pre SPIR-V
// 1.5 (vulkan 1.2)
crate::GatherMode::Broadcast(_) => spirv::Op::GroupNonUniformShuffle,
crate::GatherMode::Shuffle(_) => spirv::Op::GroupNonUniformShuffle,
crate::GatherMode::ShuffleDown(_) => spirv::Op::GroupNonUniformShuffleDown,
crate::GatherMode::ShuffleUp(_) => spirv::Op::GroupNonUniformShuffleUp,
crate::GatherMode::ShuffleXor(_) => spirv::Op::GroupNonUniformShuffleXor,
};
block.body.push(Instruction::group_non_uniform_gather(
op,
result_type_id,
id,
exec_scope_id,
arg_id,
index_id,
));
}
}
self.cached[result] = id;
Ok(())
}
}
|
