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nir/lower_atomics: Multiply array offsets by ATOMIC_COUNTER_SIZE

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Reviewed-by: Connor Abbott <cwabbott0@gmail.com>
This commit is contained in:
Jason Ekstrand 2014-10-16 09:56:14 -07:00
parent 95fbd6e1ee
commit 6e46c98ec1
1 changed files with 17 additions and 1 deletions
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18
src/glsl/nir/nir_lower_atomics.c
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@ -87,11 +87,27 @@ lower_instr(nir_intrinsic_instr *instr, nir_function_impl *impl)
offset_const->value.u[0] += deref_array->base_offset;
if (deref_array->has_indirect) {
nir_load_const_instr *atomic_counter_size =
nir_load_const_instr_create(mem_ctx);
atomic_counter_size->num_components = 1;
atomic_counter_size->value.u[0] = ATOMIC_COUNTER_SIZE;
atomic_counter_size->dest.reg.reg = nir_local_reg_create(impl);
atomic_counter_size->dest.reg.reg->num_components = 1;
nir_instr_insert_before(&instr->instr, &atomic_counter_size->instr);
nir_alu_instr *mul = nir_alu_instr_create(mem_ctx, nir_op_imul);
mul->dest.dest.reg.reg = nir_local_reg_create(impl);
mul->dest.dest.reg.reg->num_components = 1;
mul->dest.write_mask = 0x1;
mul->src[0].src = nir_src_copy(deref_array->indirect, mem_ctx);
mul->src[1].src.reg.reg = atomic_counter_size->dest.reg.reg;
nir_instr_insert_before(&instr->instr, &mul->instr);
nir_alu_instr *add = nir_alu_instr_create(mem_ctx, nir_op_iadd);
add->dest.dest.reg.reg = nir_local_reg_create(impl);
add->dest.dest.reg.reg->num_components = 1;
add->dest.write_mask = 0x1;
add->src[0].src = nir_src_copy(deref_array->indirect, mem_ctx);
add->src[0].src.reg.reg = mul->dest.dest.reg.reg;
add->src[1].src.reg.reg = offset_const->dest.reg.reg;
nir_instr_insert_before(&instr->instr, &add->instr);