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
27 gather_intrinsic_info(nir_intrinsic_instr
*instr
, nir_shader
*shader
)
29 switch (instr
->intrinsic
) {
30 case nir_intrinsic_discard
:
31 assert(shader
->stage
== MESA_SHADER_FRAGMENT
);
32 shader
->info
.fs
.uses_discard
= true;
35 case nir_intrinsic_load_front_face
:
36 case nir_intrinsic_load_vertex_id
:
37 case nir_intrinsic_load_vertex_id_zero_base
:
38 case nir_intrinsic_load_base_vertex
:
39 case nir_intrinsic_load_instance_id
:
40 case nir_intrinsic_load_sample_id
:
41 case nir_intrinsic_load_sample_pos
:
42 case nir_intrinsic_load_sample_mask_in
:
43 case nir_intrinsic_load_primitive_id
:
44 case nir_intrinsic_load_invocation_id
:
45 case nir_intrinsic_load_local_invocation_id
:
46 case nir_intrinsic_load_work_group_id
:
47 case nir_intrinsic_load_num_work_groups
:
48 shader
->info
.system_values_read
|=
49 (1 << nir_system_value_from_intrinsic(instr
->intrinsic
));
52 case nir_intrinsic_end_primitive
:
53 assert(shader
->stage
== MESA_SHADER_GEOMETRY
);
54 shader
->info
.gs
.uses_end_primitive
= 1;
63 gather_tex_info(nir_tex_instr
*instr
, nir_shader
*shader
)
65 if (instr
->op
== nir_texop_tg4
)
66 shader
->info
.uses_texture_gather
= true;
70 gather_info_block(nir_block
*block
, void *shader
)
72 nir_foreach_instr(block
, instr
) {
73 switch (instr
->type
) {
74 case nir_instr_type_intrinsic
:
75 gather_intrinsic_info(nir_instr_as_intrinsic(instr
), shader
);
77 case nir_instr_type_tex
:
78 gather_tex_info(nir_instr_as_tex(instr
), shader
);
80 case nir_instr_type_call
:
81 assert(!"nir_shader_gather_info only works if functions are inlined");
92 nir_shader_gather_info(nir_shader
*shader
, nir_function_impl
*entrypoint
)
94 shader
->info
.inputs_read
= 0;
95 foreach_list_typed(nir_variable
, var
, node
, &shader
->inputs
)
96 shader
->info
.inputs_read
|= nir_variable_get_io_mask(var
, shader
->stage
);
98 /* TODO: Some day we may need to add stream support to NIR */
99 shader
->info
.outputs_written
= 0;
100 foreach_list_typed(nir_variable
, var
, node
, &shader
->outputs
)
101 shader
->info
.outputs_written
|= nir_variable_get_io_mask(var
, shader
->stage
);
103 shader
->info
.system_values_read
= 0;
104 foreach_list_typed(nir_variable
, var
, node
, &shader
->system_values
)
105 shader
->info
.system_values_read
|= nir_variable_get_io_mask(var
, shader
->stage
);
107 nir_foreach_block(entrypoint
, gather_info_block
, shader
);