2 * Copyright © 2015 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
26 #include "nir_builder.h"
31 * packDouble2x32(foo) -> packDouble2x32Split(foo.x, foo.y)
32 * unpackDouble2x32(foo) -> vec2(unpackDouble2x32_x(foo), unpackDouble2x32_y(foo))
36 lower_pack_double(nir_builder
*b
, nir_ssa_def
*src
)
38 return nir_pack_double_2x32_split(b
, nir_channel(b
, src
, 0),
39 nir_channel(b
, src
, 1));
43 lower_unpack_double(nir_builder
*b
, nir_ssa_def
*src
)
45 return nir_vec2(b
, nir_unpack_double_2x32_split_x(b
, src
),
46 nir_unpack_double_2x32_split_y(b
, src
));
50 lower_double_pack_impl(nir_function_impl
*impl
)
53 nir_builder_init(&b
, impl
);
55 nir_foreach_block(block
, impl
) {
56 nir_foreach_instr_safe(instr
, block
) {
57 if (instr
->type
!= nir_instr_type_alu
)
60 nir_alu_instr
*alu_instr
= (nir_alu_instr
*) instr
;
62 if (alu_instr
->op
!= nir_op_pack_double_2x32
&&
63 alu_instr
->op
!= nir_op_unpack_double_2x32
)
66 b
.cursor
= nir_before_instr(&alu_instr
->instr
);
68 nir_ssa_def
*src
= nir_ssa_for_alu_src(&b
, alu_instr
, 0);
70 alu_instr
->op
== nir_op_pack_double_2x32
?
71 lower_pack_double(&b
, src
) :
72 lower_unpack_double(&b
, src
);
74 nir_ssa_def_rewrite_uses(&alu_instr
->dest
.dest
.ssa
, nir_src_for_ssa(dest
));
75 nir_instr_remove(&alu_instr
->instr
);
81 nir_lower_double_pack(nir_shader
*shader
)
83 nir_foreach_function(function
, shader
) {
85 lower_double_pack_impl(function
->impl
);