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i965/fs: set rounding mode when emitting fadd, fmul and ffma instructions

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v2:
- Updated to renamed shader info member (Andres).

Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
This commit is contained in:
Samuel Iglesias Gonsálvez 2019-02-12 16:13:59 +01:00 • committed by Andres Gomez
parent 9da56ffc52
commit ba1e25e1aa
1 changed files with 34 additions and 1 deletions
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35
src/intel/compiler/brw_fs_nir.cpp
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@ -686,6 +686,16 @@ brw_rnd_mode_from_nir_op (const nir_op op) {
}
}
static brw_rnd_mode
brw_rnd_mode_from_execution_mode(unsigned execution_mode)
{
if (nir_has_any_rounding_mode_rtne(execution_mode))
return BRW_RND_MODE_RTNE;
if (nir_has_any_rounding_mode_rtz(execution_mode))
return BRW_RND_MODE_RTZ;
return BRW_RND_MODE_UNSPECIFIED;
}
fs_reg
fs_visitor::prepare_alu_destination_and_sources(const fs_builder &bld,
nir_alu_instr *instr,
@ -989,6 +999,8 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
{
struct brw_wm_prog_key *fs_key = (struct brw_wm_prog_key *) this->key;
fs_inst *inst;
unsigned execution_mode =
bld.shader->nir->info.float_controls_execution_mode;
fs_reg op[4];
fs_reg result = prepare_alu_destination_and_sources(bld, instr, op, need_dest);
@ -1198,8 +1210,15 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
inst->saturate = instr->dest.saturate;
break;
case nir_op_iadd:
case nir_op_fadd:
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
/* fallthrough */
case nir_op_iadd:
inst = bld.ADD(result, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
@ -1217,6 +1236,13 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
}
}
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
inst = bld.MUL(result, op[0], op[1]);
inst->saturate = instr->dest.saturate;
break;
@ -1750,6 +1776,13 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr,
break;
case nir_op_ffma:
if (nir_has_any_rounding_mode_enabled(execution_mode)) {
brw_rnd_mode rnd =
brw_rnd_mode_from_execution_mode(execution_mode);
bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(rnd));
}
inst = bld.MAD(result, op[2], op[1], op[0]);
inst->saturate = instr->dest.saturate;
break;