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spirv: Add subgroup shuffle support

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Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
This commit is contained in:
Jason Ekstrand 2017-08-29 09:44:44 -07:00
parent 149b92ccf2
commit 8256ee3fa3
3 changed files with 29 additions and 1 deletions
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1
src/compiler/shader_info.h
View file

@ -47,6 +47,7 @@ struct spirv_supported_capabilities {
bool shader_viewport_index_layer;
bool subgroup_ballot;
bool subgroup_basic;
bool subgroup_shuffle;
bool subgroup_vote;
};

5
src/compiler/spirv/spirv_to_nir.c
View file

@ -3305,6 +3305,11 @@ vtn_handle_preamble_instruction(struct vtn_builder *b, SpvOp opcode,
spv_check_supported(subgroup_ballot, cap);
break;
case SpvCapabilityGroupNonUniformShuffle:
case SpvCapabilityGroupNonUniformShuffleRelative:
spv_check_supported(subgroup_shuffle, cap);
break;
case SpvCapabilityVariablePointersStorageBuffer:
case SpvCapabilityVariablePointers:
spv_check_supported(variable_pointers, cap);

24
src/compiler/spirv/vtn_subgroup.c
View file

@ -229,7 +229,29 @@ vtn_handle_subgroup(struct vtn_builder *b, SpvOp opcode,
case SpvOpGroupNonUniformShuffle:
case SpvOpGroupNonUniformShuffleXor:
case SpvOpGroupNonUniformShuffleUp:
case SpvOpGroupNonUniformShuffleDown:
case SpvOpGroupNonUniformShuffleDown: {
nir_intrinsic_op op;
switch (opcode) {
case SpvOpGroupNonUniformShuffle:
op = nir_intrinsic_shuffle;
break;
case SpvOpGroupNonUniformShuffleXor:
op = nir_intrinsic_shuffle_xor;
break;
case SpvOpGroupNonUniformShuffleUp:
op = nir_intrinsic_shuffle_up;
break;
case SpvOpGroupNonUniformShuffleDown:
op = nir_intrinsic_shuffle_down;
break;
default:
unreachable("Invalid opcode");
}
vtn_build_subgroup_instr(b, op, val->ssa, vtn_ssa_value(b, w[4]),
vtn_ssa_value(b, w[5])->def);
break;
}
case SpvOpGroupNonUniformIAdd:
case SpvOpGroupNonUniformFAdd:
case SpvOpGroupNonUniformIMul: