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/*
* Copyright © 2016 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.
*/
#include "vtn_private.h"
static void
vtn_build_subgroup_instr(struct vtn_builder *b,
nir_intrinsic_op nir_op,
struct vtn_ssa_value *dst,
struct vtn_ssa_value *src0,
nir_ssa_def *index)
{
/* Some of the subgroup operations take an index. SPIR-V allows this to be
* any integer type. To make things simpler for drivers, we only support
* 32-bit indices.
*/
if (index && index->bit_size != 32)
index = nir_u2u32(&b->nb, index);
vtn_assert(dst->type == src0->type);
if (!glsl_type_is_vector_or_scalar(dst->type)) {
for (unsigned i = 0; i < glsl_get_length(dst->type); i++) {
vtn_build_subgroup_instr(b, nir_op, dst->elems[i],
src0->elems[i], index);
}
return;
}
nir_intrinsic_instr *intrin =
nir_intrinsic_instr_create(b->nb.shader, nir_op);
nir_ssa_dest_init_for_type(&intrin->instr, &intrin->dest,
dst->type, NULL);
intrin->num_components = intrin->dest.ssa.num_components;
intrin->src[0] = nir_src_for_ssa(src0->def);
if (index)
intrin->src[1] = nir_src_for_ssa(index);
nir_builder_instr_insert(&b->nb, &intrin->instr);
dst->def = &intrin->dest.ssa;
}
void
vtn_handle_subgroup(struct vtn_builder *b, SpvOp opcode,
const uint32_t *w, unsigned count)
{
struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
val->ssa = vtn_create_ssa_value(b, val->type->type);
switch (opcode) {
case SpvOpGroupNonUniformElect: {
vtn_fail_if(val->type->type != glsl_bool_type(),
"OpGroupNonUniformElect must return a Bool");
nir_intrinsic_instr *elect =
nir_intrinsic_instr_create(b->nb.shader, nir_intrinsic_elect);
nir_ssa_dest_init(&elect->instr, &elect->dest, 1, 32, NULL);
nir_builder_instr_insert(&b->nb, &elect->instr);
val->ssa->def = &elect->dest.ssa;
break;
}
case SpvOpGroupNonUniformBallot: {
vtn_fail_if(val->type->type != glsl_vector_type(GLSL_TYPE_UINT, 4),
"OpGroupNonUniformBallot must return a uvec4");
nir_intrinsic_instr *ballot =
nir_intrinsic_instr_create(b->nb.shader, nir_intrinsic_ballot);
ballot->src[0] = nir_src_for_ssa(vtn_ssa_value(b, w[4])->def);
nir_ssa_dest_init(&ballot->instr, &ballot->dest, 4, 32, NULL);
ballot->num_components = 4;
nir_builder_instr_insert(&b->nb, &ballot->instr);
val->ssa->def = &ballot->dest.ssa;
break;
}
case SpvOpGroupNonUniformInverseBallot: {
/* This one is just a BallotBitfieldExtract with subgroup invocation.
* We could add a NIR intrinsic but it's easier to just lower it on the
* spot.
*/
nir_intrinsic_instr *intrin =
nir_intrinsic_instr_create(b->nb.shader,
nir_intrinsic_ballot_bitfield_extract);
intrin->src[0] = nir_src_for_ssa(vtn_ssa_value(b, w[4])->def);
intrin->src[1] = nir_src_for_ssa(nir_load_subgroup_invocation(&b->nb));
nir_ssa_dest_init(&intrin->instr, &intrin->dest, 1, 32, NULL);
nir_builder_instr_insert(&b->nb, &intrin->instr);
val->ssa->def = &intrin->dest.ssa;
break;
}
case SpvOpGroupNonUniformBallotBitExtract:
case SpvOpGroupNonUniformBallotBitCount:
case SpvOpGroupNonUniformBallotFindLSB:
case SpvOpGroupNonUniformBallotFindMSB: {
nir_ssa_def *src0, *src1 = NULL;
nir_intrinsic_op op;
switch (opcode) {
case SpvOpGroupNonUniformBallotBitExtract:
op = nir_intrinsic_ballot_bitfield_extract;
src0 = vtn_ssa_value(b, w[4])->def;
src1 = vtn_ssa_value(b, w[5])->def;
break;
case SpvOpGroupNonUniformBallotBitCount:
switch ((SpvGroupOperation)w[4]) {
case SpvGroupOperationReduce:
op = nir_intrinsic_ballot_bit_count_reduce;
break;
case SpvGroupOperationInclusiveScan:
op = nir_intrinsic_ballot_bit_count_inclusive;
break;
case SpvGroupOperationExclusiveScan:
op = nir_intrinsic_ballot_bit_count_exclusive;
break;
default:
unreachable("Invalid group operation");
}
src0 = vtn_ssa_value(b, w[5])->def;
break;
case SpvOpGroupNonUniformBallotFindLSB:
op = nir_intrinsic_ballot_find_lsb;
src0 = vtn_ssa_value(b, w[4])->def;
break;
case SpvOpGroupNonUniformBallotFindMSB:
op = nir_intrinsic_ballot_find_msb;
src0 = vtn_ssa_value(b, w[4])->def;
break;
default:
unreachable("Unhandled opcode");
}
nir_intrinsic_instr *intrin =
nir_intrinsic_instr_create(b->nb.shader, op);
intrin->src[0] = nir_src_for_ssa(src0);
if (src1)
intrin->src[1] = nir_src_for_ssa(src1);
nir_ssa_dest_init(&intrin->instr, &intrin->dest, 1, 32, NULL);
nir_builder_instr_insert(&b->nb, &intrin->instr);
val->ssa->def = &intrin->dest.ssa;
break;
}
case SpvOpGroupNonUniformBroadcastFirst:
vtn_build_subgroup_instr(b, nir_intrinsic_read_first_invocation,
val->ssa, vtn_ssa_value(b, w[4]), NULL);
break;
case SpvOpGroupNonUniformBroadcast:
vtn_build_subgroup_instr(b, nir_intrinsic_read_invocation,
val->ssa, vtn_ssa_value(b, w[4]),
vtn_ssa_value(b, w[5])->def);
break;
case SpvOpGroupNonUniformAll:
case SpvOpGroupNonUniformAny:
case SpvOpGroupNonUniformAllEqual: {
vtn_fail_if(val->type->type != glsl_bool_type(),
"OpGroupNonUniform(All|Any|AllEqual) must return a bool");
nir_intrinsic_op op;
switch (opcode) {
case SpvOpGroupNonUniformAll:
op = nir_intrinsic_vote_all;
break;
case SpvOpGroupNonUniformAny:
op = nir_intrinsic_vote_any;
break;
case SpvOpGroupNonUniformAllEqual: {
switch (glsl_get_base_type(val->type->type)) {
case GLSL_TYPE_FLOAT:
case GLSL_TYPE_DOUBLE:
op = nir_intrinsic_vote_feq;
break;
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
case GLSL_TYPE_UINT64:
case GLSL_TYPE_INT64:
case GLSL_TYPE_BOOL:
op = nir_intrinsic_vote_ieq;
break;
default:
unreachable("Unhandled type");
}
break;
}
default:
unreachable("Unhandled opcode");
}
nir_ssa_def *src0 = vtn_ssa_value(b, w[4])->def;
nir_intrinsic_instr *intrin =
nir_intrinsic_instr_create(b->nb.shader, op);
intrin->num_components = src0->num_components;
intrin->src[0] = nir_src_for_ssa(src0);
nir_ssa_dest_init(&intrin->instr, &intrin->dest, 1, 32, NULL);
nir_builder_instr_insert(&b->nb, &intrin->instr);
val->ssa->def = &intrin->dest.ssa;
break;
}
case SpvOpGroupNonUniformShuffle:
case SpvOpGroupNonUniformShuffleXor:
case SpvOpGroupNonUniformShuffleUp:
case SpvOpGroupNonUniformShuffleDown:
case SpvOpGroupNonUniformIAdd:
case SpvOpGroupNonUniformFAdd:
case SpvOpGroupNonUniformIMul:
case SpvOpGroupNonUniformFMul:
case SpvOpGroupNonUniformSMin:
case SpvOpGroupNonUniformUMin:
case SpvOpGroupNonUniformFMin:
case SpvOpGroupNonUniformSMax:
case SpvOpGroupNonUniformUMax:
case SpvOpGroupNonUniformFMax:
case SpvOpGroupNonUniformBitwiseAnd:
case SpvOpGroupNonUniformBitwiseOr:
case SpvOpGroupNonUniformBitwiseXor:
case SpvOpGroupNonUniformLogicalAnd:
case SpvOpGroupNonUniformLogicalOr:
case SpvOpGroupNonUniformLogicalXor:
case SpvOpGroupNonUniformQuadBroadcast:
case SpvOpGroupNonUniformQuadSwap:
default:
unreachable("Invalid SPIR-V opcode");
}
}
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