2 * Copyright © 2014 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
24 * Connor Abbott (cwabbott0@gmail.com)
29 #include "main/mtypes.h"
32 convert_instr(nir_intrinsic_instr
*instr
)
34 if (instr
->intrinsic
!= nir_intrinsic_load_var
)
37 nir_variable
*var
= instr
->variables
[0]->var
;
38 if (var
->data
.mode
!= nir_var_system_value
)
41 void *mem_ctx
= ralloc_parent(instr
);
45 switch (var
->data
.location
) {
46 case SYSTEM_VALUE_FRONT_FACE
:
47 op
= nir_intrinsic_load_front_face
;
49 case SYSTEM_VALUE_VERTEX_ID
:
50 op
= nir_intrinsic_load_vertex_id
;
52 case SYSTEM_VALUE_INSTANCE_ID
:
53 op
= nir_intrinsic_load_instance_id
;
55 case SYSTEM_VALUE_SAMPLE_ID
:
56 op
= nir_intrinsic_load_sample_id
;
58 case SYSTEM_VALUE_SAMPLE_POS
:
59 op
= nir_intrinsic_load_sample_pos
;
61 case SYSTEM_VALUE_SAMPLE_MASK_IN
:
62 op
= nir_intrinsic_load_sample_mask_in
;
64 case SYSTEM_VALUE_INVOCATION_ID
:
65 op
= nir_intrinsic_load_invocation_id
;
68 unreachable("not reached");
71 nir_intrinsic_instr
*new_instr
= nir_intrinsic_instr_create(mem_ctx
, op
);
73 if (instr
->dest
.is_ssa
) {
74 nir_ssa_dest_init(&new_instr
->instr
, &new_instr
->dest
,
75 instr
->dest
.ssa
.num_components
, NULL
);
76 nir_ssa_def_rewrite_uses(&instr
->dest
.ssa
,
77 nir_src_for_ssa(&new_instr
->dest
.ssa
),
80 nir_dest_copy(&new_instr
->dest
, &instr
->dest
, mem_ctx
);
83 nir_instr_insert_before(&instr
->instr
, &new_instr
->instr
);
84 nir_instr_remove(&instr
->instr
);
88 convert_block(nir_block
*block
, void *state
)
92 nir_foreach_instr_safe(block
, instr
) {
93 if (instr
->type
== nir_instr_type_intrinsic
)
94 convert_instr(nir_instr_as_intrinsic(instr
));
101 convert_impl(nir_function_impl
*impl
)
103 nir_foreach_block(impl
, convert_block
, NULL
);
104 nir_metadata_preserve(impl
, nir_metadata_block_index
|
105 nir_metadata_dominance
);
109 nir_lower_system_values(nir_shader
*shader
)
111 nir_foreach_overload(shader
, overload
) {
113 convert_impl(overload
->impl
);
116 exec_list_make_empty(&shader
->system_values
);