1 /*
2 * Copyright (C) 2024 Collabora, Ltd.
3 *
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:
10 *
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
13 * Software.
14 *
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
21 * IN THE SOFTWARE.
22 *
23 * Authors (Collabora):
24 * Eric Smith <eric.smith@collabora.com>
25 */
26
27 #include "compiler/nir/nir.h"
28 #include "compiler/nir/nir_builder.h"
29 #include "pan_ir.h"
30
31 static bool
nir_lower_image_ms(nir_builder * b,nir_intrinsic_instr * intr,UNUSED void * data)32 nir_lower_image_ms(nir_builder *b, nir_intrinsic_instr *intr,
33 UNUSED void *data)
34 {
35 switch (intr->intrinsic) {
36 case nir_intrinsic_image_load:
37 case nir_intrinsic_image_deref_load:
38 case nir_intrinsic_image_store:
39 case nir_intrinsic_image_deref_store:
40 case nir_intrinsic_image_texel_address:
41 break;
42 default:
43 return false;
44 }
45
46 if (nir_intrinsic_image_dim(intr) != GLSL_SAMPLER_DIM_MS)
47 return false;
48
49 b->cursor = nir_before_instr(&intr->instr);
50
51 nir_def *coord = intr->src[1].ssa;
52 nir_def *index = intr->src[2].ssa;
53
54 /* image2DMS is treated by panfrost as if it were a 3D image, so
55 * the sample index is in src[2]. We need to put this into the coordinates
56 * in the Z component
57 */
58 nir_src_rewrite(&intr->src[1],
59 nir_vector_insert_imm(b, coord,
60 nir_channel(b, index, 0),
61 2) );
62 nir_intrinsic_set_image_dim(intr, GLSL_SAMPLER_DIM_3D);
63 return true;
64 }
65
66 bool
pan_nir_lower_image_ms(nir_shader * shader)67 pan_nir_lower_image_ms(nir_shader *shader)
68 {
69 return nir_shader_intrinsics_pass(
70 shader, nir_lower_image_ms,
71 nir_metadata_block_index | nir_metadata_dominance, NULL);
72 }
73