i965/fs/nir: translate double pack/unpack

v2 (Sam):
- Fix line overflow (Topi).

v3: Use subscript() instead of stride() (Curro)

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 60335c3..5b5a766 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -1098,6 +1098,18 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr)
       inst->saturate = instr->dest.saturate;
       break;
 
+   case nir_op_pack_double_2x32_split:
+      bld.emit(FS_OPCODE_PACK, result, op[0], op[1]);
+      break;
+
+   case nir_op_unpack_double_2x32_split_x:
+      bld.MOV(result, subscript(op[0], BRW_REGISTER_TYPE_UD, 0));
+      break;
+
+   case nir_op_unpack_double_2x32_split_y:
+      bld.MOV(result, subscript(op[0], BRW_REGISTER_TYPE_UD, 1));
+      break;
+
    case nir_op_fpow:
       inst = bld.emit(SHADER_OPCODE_POW, result, op[0], op[1]);
       inst->saturate = instr->dest.saturate;