1 /*
2 * Copyright © 2023 Igalia S.L.
3 * SPDX-License-Identifier: MIT
4 */
5
6 #include "etnaviv_nir.h"
7
8 static bool
lower_txs(nir_builder * b,nir_instr * instr,UNUSED void * data)9 lower_txs(nir_builder *b, nir_instr *instr, UNUSED void *data)
10 {
11 if (instr->type != nir_instr_type_tex)
12 return false;
13
14 nir_tex_instr *tex = nir_instr_as_tex(instr);
15
16 if (tex->op != nir_texop_txs)
17 return false;
18
19 b->cursor = nir_instr_remove(instr);
20
21 nir_def *idx = nir_imm_int(b, tex->texture_index);
22 nir_def *sizes = nir_load_texture_size_etna(b, 32, idx);
23
24 nir_def_rewrite_uses(&tex->def, sizes);
25
26 return true;
27 }
28
29 bool
etna_nir_lower_texture(nir_shader * s,struct etna_shader_key * key)30 etna_nir_lower_texture(nir_shader *s, struct etna_shader_key *key)
31 {
32 bool progress = false;
33
34 nir_lower_tex_options lower_tex_options = {
35 .lower_txp = ~0u,
36 .lower_txs_lod = true,
37 .lower_invalid_implicit_lod = true,
38 };
39
40 NIR_PASS(progress, s, nir_lower_tex, &lower_tex_options);
41
42 if (key->has_sample_tex_compare)
43 NIR_PASS(progress, s, nir_lower_tex_shadow, key->num_texture_states,
44 key->tex_compare_func,
45 key->tex_swizzle,
46 true);
47
48 NIR_PASS(progress, s, nir_shader_instructions_pass, lower_txs,
49 nir_metadata_control_flow, NULL);
50
51 return progress;
52 }
53