From: Alejandro Piñeiro <[email protected]>
By default we don't set the rounding mode. We only set
round-to-near-even or round-to-zero mode if explicitly set from nir.
v2: Use a single SHADER_OPCODE_RND_MODE opcode taking an immediate
with the rounding mode (Curro)
Signed-off-by: Jose Maria Casanova Crespo <[email protected]>
Signed-off-by: Alejandro Piñeiro <[email protected]>
---
src/intel/compiler/brw_fs_nir.cpp | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/intel/compiler/brw_fs_nir.cpp
b/src/intel/compiler/brw_fs_nir.cpp
index 6908c7ea02..b356836e80 100644
--- a/src/intel/compiler/brw_fs_nir.cpp
+++ b/src/intel/compiler/brw_fs_nir.cpp
@@ -693,6 +693,14 @@ fs_visitor::nir_emit_alu(const fs_builder &bld,
nir_alu_instr *instr)
inst->saturate = instr->dest.saturate;
break;
+ case nir_op_f2f16_rtne:
+ case nir_op_f2f16_rtz:
+ if (instr->op == nir_op_f2f16_rtz)
+ bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(BRW_RND_MODE_RTZ));
+ else if (instr->op == nir_op_f2f16_rtne)
+ bld.emit(SHADER_OPCODE_RND_MODE, bld.null_reg_ud(),
brw_imm_d(BRW_RND_MODE_RTNE));
+ /* fallthrough */
+
/* In theory, it would be better to use BRW_OPCODE_F32TO16. Depending
* on the HW gen, it is a special hw opcode or just a MOV, and
* brw_F32TO16 (at brw_eu_emit) would do the work to chose.
--
2.13.6
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