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nir: Add support for lowering load/stores of shared variables

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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jordan Justen
2016-01-18 09:44:31 -08:00
parent 683c359c54
commit e3cbb9d37c
5 changed files with 32 additions and 8 deletions
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35
src/compiler/nir/nir_lower_io.c
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@@ -160,6 +160,29 @@ load_op(struct lower_io_state *state,
case nir_var_uniform:
op = nir_intrinsic_load_uniform;
break;
case nir_var_shared:
op = nir_intrinsic_load_shared;
break;
default:
unreachable("Unknown variable mode");
}
return op;
}
static nir_intrinsic_op
store_op(struct lower_io_state *state,
nir_variable_mode mode, bool per_vertex)
{
nir_intrinsic_op op;
switch (mode) {
case nir_var_shader_in:
case nir_var_shader_out:
op = per_vertex ? nir_intrinsic_store_per_vertex_output :
nir_intrinsic_store_output;
break;
case nir_var_shared:
op = nir_intrinsic_store_shared;
break;
default:
unreachable("Unknown variable mode");
}
@@ -190,6 +213,7 @@ nir_lower_io_block(nir_block *block, void *void_state)
if (mode != nir_var_shader_in &&
mode != nir_var_shader_out &&
mode != nir_var_shared &&
mode != nir_var_uniform)
continue;
@@ -236,7 +260,7 @@ nir_lower_io_block(nir_block *block, void *void_state)
}
case nir_intrinsic_store_var: {
assert(mode == nir_var_shader_out);
assert(mode == nir_var_shader_out || mode == nir_var_shared);
nir_ssa_def *offset;
nir_ssa_def *vertex_index;
@@ -248,12 +272,9 @@ nir_lower_io_block(nir_block *block, void *void_state)
per_vertex ? &vertex_index : NULL,
state->type_size);
nir_intrinsic_op store_op =
per_vertex ? nir_intrinsic_store_per_vertex_output :
nir_intrinsic_store_output;
nir_intrinsic_instr *store = nir_intrinsic_instr_create(state->mem_ctx,
store_op);
nir_intrinsic_instr *store =
nir_intrinsic_instr_create(state->mem_ctx,
store_op(state, mode, per_vertex));
store->num_components = intrin->num_components;
nir_src_copy(&store->src[0], &intrin->src[0], store);