1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* This file is part of libplacebo.
*
* libplacebo is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* libplacebo is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with libplacebo. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <shaderc/shaderc.h>
#include "hash.h"
#include "spirv.h"
#include "utils.h"
const struct spirv_compiler pl_spirv_shaderc;
struct priv {
shaderc_compiler_t compiler;
};
static void shaderc_destroy(pl_spirv spirv)
{
struct priv *p = PL_PRIV(spirv);
shaderc_compiler_release(p->compiler);
pl_free((void *) spirv);
}
static pl_spirv shaderc_create(pl_log log, struct pl_spirv_version spirv_ver)
{
struct pl_spirv_t *spirv = pl_alloc_obj(NULL, spirv, struct priv);
*spirv = (struct pl_spirv_t) {
.signature = pl_str0_hash(pl_spirv_shaderc.name),
.impl = &pl_spirv_shaderc,
.version = spirv_ver,
.log = log,
};
struct priv *p = PL_PRIV(spirv);
p->compiler = shaderc_compiler_initialize();
if (!p->compiler)
goto error;
unsigned int ver = 0, rev = 0;
shaderc_get_spv_version(&ver, &rev);
PL_INFO(spirv, "shaderc SPIR-V version %u.%u rev %u",
ver >> 16, (ver >> 8) & 0xff, rev);
// Clamp to supported version by shaderc
if (ver < spirv->version.spv_version) {
spirv->version.spv_version = ver;
spirv->version.env_version = pl_spirv_version_to_vulkan(ver);
}
pl_hash_merge(&spirv->signature, (uint64_t) spirv->version.spv_version << 32 |
spirv->version.env_version);
pl_hash_merge(&spirv->signature, (uint64_t) ver << 32 | rev);
return spirv;
error:
shaderc_destroy(spirv);
return NULL;
}
static pl_str shaderc_compile(pl_spirv spirv, void *alloc,
struct pl_glsl_version glsl_ver,
enum glsl_shader_stage stage,
const char *shader)
{
struct priv *p = PL_PRIV(spirv);
const size_t len = strlen(shader);
shaderc_compile_options_t opts = shaderc_compile_options_initialize();
if (!opts)
return (pl_str) {0};
shaderc_compile_options_set_optimization_level(opts,
shaderc_optimization_level_performance);
shaderc_compile_options_set_target_spirv(opts, spirv->version.spv_version);
shaderc_compile_options_set_target_env(opts, shaderc_target_env_vulkan,
spirv->version.env_version);
for (int i = 0; i < 3; i++) {
shaderc_compile_options_set_limit(opts,
shaderc_limit_max_compute_work_group_size_x + i,
glsl_ver.max_group_size[i]);
}
shaderc_compile_options_set_limit(opts,
shaderc_limit_min_program_texel_offset,
glsl_ver.min_gather_offset);
shaderc_compile_options_set_limit(opts,
shaderc_limit_max_program_texel_offset,
glsl_ver.max_gather_offset);
static const shaderc_shader_kind kinds[] = {
[GLSL_SHADER_VERTEX] = shaderc_glsl_vertex_shader,
[GLSL_SHADER_FRAGMENT] = shaderc_glsl_fragment_shader,
[GLSL_SHADER_COMPUTE] = shaderc_glsl_compute_shader,
};
static const char * const file_name = "input";
static const char * const entry_point = "main";
shaderc_compilation_result_t res;
res = shaderc_compile_into_spv(p->compiler, shader, len, kinds[stage],
file_name, entry_point, opts);
int errs = shaderc_result_get_num_errors(res),
warn = shaderc_result_get_num_warnings(res);
enum pl_log_level lev = errs ? PL_LOG_ERR : warn ? PL_LOG_INFO : PL_LOG_DEBUG;
int s = shaderc_result_get_compilation_status(res);
bool success = s == shaderc_compilation_status_success;
if (!success)
lev = PL_LOG_ERR;
const char *msg = shaderc_result_get_error_message(res);
if (msg[0])
PL_MSG(spirv, lev, "shaderc output:\n%s", msg);
static const char *results[] = {
[shaderc_compilation_status_success] = "success",
[shaderc_compilation_status_invalid_stage] = "invalid stage",
[shaderc_compilation_status_compilation_error] = "error",
[shaderc_compilation_status_internal_error] = "internal error",
[shaderc_compilation_status_null_result_object] = "no result",
[shaderc_compilation_status_invalid_assembly] = "invalid assembly",
};
const char *status = s < PL_ARRAY_SIZE(results) ? results[s] : "unknown";
PL_MSG(spirv, lev, "shaderc compile status '%s' (%d errors, %d warnings)",
status, errs, warn);
pl_str ret = {0};
if (success) {
void *bytes = (void *) shaderc_result_get_bytes(res);
pl_assert(bytes);
ret.len = shaderc_result_get_length(res);
ret.buf = pl_memdup(alloc, bytes, ret.len);
if (pl_msg_test(spirv->log, PL_LOG_TRACE)) {
shaderc_compilation_result_t dis;
dis = shaderc_compile_into_spv_assembly(p->compiler, shader, len,
kinds[stage], file_name,
entry_point, opts);
PL_TRACE(spirv, "Generated SPIR-V:\n%.*s",
(int) shaderc_result_get_length(dis),
shaderc_result_get_bytes(dis));
shaderc_result_release(dis);
}
}
shaderc_result_release(res);
shaderc_compile_options_release(opts);
return ret;
}
const struct spirv_compiler pl_spirv_shaderc = {
.name = "shaderc",
.destroy = shaderc_destroy,
.create = shaderc_create,
.compile = shaderc_compile,
};
|
