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 bindless image operations by turning the image_deref_* into a
28 * bindless_image_* intrinsic and adding a load_deref on the previous deref
29 * source. All applicable indicies are also set so that fetching the variable
30 * 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 lower_impl(nir_builder
*b
, nir_instr
*instr
) {
41 if (instr
->type
!= nir_instr_type_intrinsic
)
44 nir_intrinsic_instr
*intrinsic
= nir_instr_as_intrinsic(instr
);
46 nir_deref_instr
*deref
;
49 switch (intrinsic
->intrinsic
) {
50 case nir_intrinsic_image_deref_atomic_add
:
51 case nir_intrinsic_image_deref_atomic_imin
:
52 case nir_intrinsic_image_deref_atomic_umin
:
53 case nir_intrinsic_image_deref_atomic_imax
:
54 case nir_intrinsic_image_deref_atomic_umax
:
55 case nir_intrinsic_image_deref_atomic_and
:
56 case nir_intrinsic_image_deref_atomic_or
:
57 case nir_intrinsic_image_deref_atomic_xor
:
58 case nir_intrinsic_image_deref_atomic_exchange
:
59 case nir_intrinsic_image_deref_atomic_comp_swap
:
60 case nir_intrinsic_image_deref_atomic_fadd
:
61 case nir_intrinsic_image_deref_load
:
62 case nir_intrinsic_image_deref_samples
:
63 case nir_intrinsic_image_deref_size
:
64 case nir_intrinsic_image_deref_store
: {
65 deref
= nir_src_as_deref(intrinsic
->src
[0]);
66 var
= nir_deref_instr_get_variable(deref
);
73 if (deref
->mode
== nir_var_uniform
&& !var
->data
.bindless
)
76 b
->cursor
= nir_before_instr(instr
);
77 nir_ssa_def
*handle
= nir_load_deref(b
, deref
);
78 nir_rewrite_image_intrinsic(intrinsic
, handle
, true);
83 gl_nir_lower_bindless_images(nir_shader
*shader
)
85 bool progress
= false;
87 nir_foreach_function(function
, shader
) {
90 nir_builder_init(&b
, function
->impl
);
92 nir_foreach_block(block
, function
->impl
)
93 nir_foreach_instr(instr
, block
)
94 progress
|= lower_impl(&b
, instr
);