2 * Copyright © 2019 Red Hat Inc.
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
21 * DEALINGS IN THE SOFTWARE.
27 * Lower image operations by turning the image_deref_* into a image_* on an
28 * index number or bindless_image_* intrinsic on a load_deref of the previous
29 * deref source. All applicable indicies are also set so that fetching the
30 * variable in the backend wouldn't be needed anymore.
33 #include "compiler/nir/nir.h"
34 #include "compiler/nir/nir_builder.h"
35 #include "compiler/nir/nir_deref.h"
37 #include "compiler/glsl/gl_nir.h"
40 type_size_align_1(const struct glsl_type
*type
, unsigned *size
, unsigned *align
)
47 lower_impl(nir_builder
*b
, nir_instr
*instr
, bool bindless_only
)
49 if (instr
->type
!= nir_instr_type_intrinsic
)
52 nir_intrinsic_instr
*intrinsic
= nir_instr_as_intrinsic(instr
);
54 nir_deref_instr
*deref
;
57 switch (intrinsic
->intrinsic
) {
58 case nir_intrinsic_image_deref_atomic_add
:
59 case nir_intrinsic_image_deref_atomic_imin
:
60 case nir_intrinsic_image_deref_atomic_umin
:
61 case nir_intrinsic_image_deref_atomic_imax
:
62 case nir_intrinsic_image_deref_atomic_umax
:
63 case nir_intrinsic_image_deref_atomic_and
:
64 case nir_intrinsic_image_deref_atomic_or
:
65 case nir_intrinsic_image_deref_atomic_xor
:
66 case nir_intrinsic_image_deref_atomic_exchange
:
67 case nir_intrinsic_image_deref_atomic_comp_swap
:
68 case nir_intrinsic_image_deref_atomic_fadd
:
69 case nir_intrinsic_image_deref_load
:
70 case nir_intrinsic_image_deref_samples
:
71 case nir_intrinsic_image_deref_size
:
72 case nir_intrinsic_image_deref_store
: {
73 deref
= nir_src_as_deref(intrinsic
->src
[0]);
74 var
= nir_deref_instr_get_variable(deref
);
81 bool bindless
= deref
->mode
!= nir_var_uniform
|| var
->data
.bindless
;
82 if (bindless_only
&& !bindless
)
85 b
->cursor
= nir_before_instr(instr
);
89 src
= nir_load_deref(b
, deref
);
92 nir_build_deref_offset(b
, deref
, type_size_align_1
),
93 var
->data
.driver_location
);
95 nir_rewrite_image_intrinsic(intrinsic
, src
, bindless
);
101 gl_nir_lower_images(nir_shader
*shader
, bool bindless_only
)
103 bool progress
= false;
105 nir_foreach_function(function
, shader
) {
106 if (function
->impl
) {
108 nir_builder_init(&b
, function
->impl
);
110 nir_foreach_block(block
, function
->impl
)
111 nir_foreach_instr(instr
, block
)
112 progress
|= lower_impl(&b
, instr
, bindless_only
);