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gallivm: add subgroup system values support

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This just adds support for retrieving subgroup system values.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9645>
This commit is contained in:
Dave Airlie 2021-03-19 11:59:33 +10:00 • committed by Marge Bot
parent 1b8145eee9
commit 52415cd39e
3 changed files with 18 additions and 0 deletions
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3
src/gallium/auxiliary/gallivm/lp_bld_nir.c
View file

@ -1676,6 +1676,9 @@ static void visit_intrinsic(struct lp_build_nir_context *bld_base,
case nir_intrinsic_load_sample_pos:
case nir_intrinsic_load_sample_mask_in:
case nir_intrinsic_load_view_index:
case nir_intrinsic_load_subgroup_invocation:
case nir_intrinsic_load_subgroup_id:
case nir_intrinsic_load_num_subgroups:
bld_base->sysval_intrin(bld_base, instr, result);
break;
case nir_intrinsic_load_helper_invocation:

13
src/gallium/auxiliary/gallivm/lp_bld_nir_soa.c
View file

@ -1590,6 +1590,19 @@ static void emit_sysval_intrin(struct lp_build_nir_context *bld_base,
case nir_intrinsic_load_view_index:
result[0] = lp_build_broadcast_scalar(&bld_base->uint_bld, bld->system_values.view_index);
break;
case nir_intrinsic_load_subgroup_invocation: {
LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
for(unsigned i = 0; i < bld->bld_base.base.type.length; ++i)
elems[i] = lp_build_const_int32(gallivm, i);
result[0] = LLVMConstVector(elems, bld->bld_base.base.type.length);
break;
}
case nir_intrinsic_load_subgroup_id:
result[0] = lp_build_broadcast_scalar(&bld_base->uint_bld, bld->system_values.subgroup_id);
break;
case nir_intrinsic_load_num_subgroups:
result[0] = lp_build_broadcast_scalar(&bld_base->uint_bld, bld->system_values.num_subgroups);
break;
}
}

2
src/gallium/auxiliary/gallivm/lp_bld_tgsi.h
View file

@ -188,6 +188,8 @@ struct lp_bld_tgsi_system_values {
LLVMValueRef sample_pos;
LLVMValueRef sample_mask_in;
LLVMValueRef view_index;
LLVMValueRef subgroup_id;
LLVMValueRef num_subgroups;
};