1 /*
2 * Copyright © 2014 Rob Clark <robclark@freedesktop.org>
3 * SPDX-License-Identifier: MIT
4 *
5 * Authors:
6 * Rob Clark <robclark@freedesktop.org>
7 */
8
9 #include <err.h>
10 #include <fcntl.h>
11 #include <getopt.h>
12 #include <stdint.h>
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <sys/mman.h>
16 #include <sys/stat.h>
17 #include <sys/types.h>
18
19 #include "nir/tgsi_to_nir.h"
20 #include "tgsi/tgsi_dump.h"
21 #include "tgsi/tgsi_text.h"
22
23 #include "ir3/instr-a3xx.h"
24 #include "ir3/ir3.h"
25 #include "ir3/ir3_compiler.h"
26 #include "ir3/ir3_gallium.h"
27 #include "ir3/ir3_nir.h"
28
29 #include "main/mtypes.h"
30
31 #include "compiler/glsl_types.h"
32 #include "compiler/glsl/gl_nir.h"
33 #include "compiler/glsl/glsl_to_nir.h"
34 #include "compiler/glsl/standalone.h"
35 #include "compiler/spirv/nir_spirv.h"
36 #include "compiler/spirv/spirv_info.h"
37
38 #include "pipe/p_context.h"
39
40 static void
dump_info(struct ir3_shader_variant * so,const char * str)41 dump_info(struct ir3_shader_variant *so, const char *str)
42 {
43 uint32_t *bin;
44 const char *type = ir3_shader_stage(so);
45 bin = ir3_shader_assemble(so);
46 printf("; %s: %s\n", type, str);
47 ir3_shader_disasm(so, bin, stdout);
48 }
49
50 static void
insert_sorted(struct exec_list * var_list,nir_variable * new_var)51 insert_sorted(struct exec_list *var_list, nir_variable *new_var)
52 {
53 nir_foreach_variable_in_list (var, var_list) {
54 if (var->data.location > new_var->data.location) {
55 exec_node_insert_node_before(&var->node, &new_var->node);
56 return;
57 }
58 }
59 exec_list_push_tail(var_list, &new_var->node);
60 }
61
62 static void
sort_varyings(nir_shader * nir,nir_variable_mode mode)63 sort_varyings(nir_shader *nir, nir_variable_mode mode)
64 {
65 struct exec_list new_list;
66 exec_list_make_empty(&new_list);
67 nir_foreach_variable_with_modes_safe (var, nir, mode) {
68 exec_node_remove(&var->node);
69 insert_sorted(&new_list, var);
70 }
71 exec_list_append(&nir->variables, &new_list);
72 }
73
74 static void
fixup_varying_slots(nir_shader * nir,nir_variable_mode mode)75 fixup_varying_slots(nir_shader *nir, nir_variable_mode mode)
76 {
77 nir_foreach_variable_with_modes (var, nir, mode) {
78 if (var->data.location >= VARYING_SLOT_VAR0) {
79 var->data.location += 9;
80 } else if ((var->data.location >= VARYING_SLOT_TEX0) &&
81 (var->data.location <= VARYING_SLOT_TEX7)) {
82 var->data.location += VARYING_SLOT_VAR0 - VARYING_SLOT_TEX0;
83 }
84 }
85 }
86
87 static struct ir3_compiler *compiler;
88
89 static nir_shader *
load_glsl(unsigned num_files,char * const * files,gl_shader_stage stage)90 load_glsl(unsigned num_files, char *const *files, gl_shader_stage stage)
91 {
92 static const struct standalone_options options = {
93 .glsl_version = 310,
94 .do_link = true,
95 .lower_precision = true,
96 };
97 struct gl_shader_program *prog;
98 const nir_shader_compiler_options *nir_options =
99 ir3_get_compiler_options(compiler);
100 static struct gl_context local_ctx;
101
102 prog = standalone_compile_shader(&options, num_files, files, &local_ctx);
103 if (!prog)
104 errx(1, "couldn't parse `%s'", files[0]);
105
106 nir_shader *nir = prog->_LinkedShaders[stage]->Program->nir;
107
108 /* required NIR passes: */
109 if (nir_options->lower_all_io_to_temps ||
110 nir->info.stage == MESA_SHADER_VERTEX ||
111 nir->info.stage == MESA_SHADER_GEOMETRY) {
112 NIR_PASS_V(nir, nir_lower_io_to_temporaries,
113 nir_shader_get_entrypoint(nir), true, true);
114 } else if (nir->info.stage == MESA_SHADER_TESS_EVAL ||
115 nir->info.stage == MESA_SHADER_FRAGMENT) {
116 NIR_PASS_V(nir, nir_lower_io_to_temporaries,
117 nir_shader_get_entrypoint(nir), true, false);
118 }
119
120 NIR_PASS_V(nir, nir_lower_global_vars_to_local);
121 NIR_PASS_V(nir, nir_split_var_copies);
122 NIR_PASS_V(nir, nir_lower_var_copies);
123
124 NIR_PASS_V(nir, nir_split_var_copies);
125 NIR_PASS_V(nir, nir_lower_var_copies);
126 nir_print_shader(nir, stdout);
127 NIR_PASS_V(nir, gl_nir_lower_atomics, prog, true);
128 NIR_PASS_V(nir, gl_nir_lower_buffers, prog);
129 NIR_PASS_V(nir, nir_lower_atomics_to_ssbo, 0);
130 nir_print_shader(nir, stdout);
131
132 switch (stage) {
133 case MESA_SHADER_VERTEX:
134 nir_assign_var_locations(nir, nir_var_shader_in, &nir->num_inputs,
135 ir3_glsl_type_size);
136
137 /* Re-lower global vars, to deal with any dead VS inputs. */
138 NIR_PASS_V(nir, nir_lower_global_vars_to_local);
139
140 sort_varyings(nir, nir_var_shader_out);
141 nir_assign_var_locations(nir, nir_var_shader_out, &nir->num_outputs,
142 ir3_glsl_type_size);
143 fixup_varying_slots(nir, nir_var_shader_out);
144 break;
145 case MESA_SHADER_FRAGMENT:
146 sort_varyings(nir, nir_var_shader_in);
147 nir_assign_var_locations(nir, nir_var_shader_in, &nir->num_inputs,
148 ir3_glsl_type_size);
149 fixup_varying_slots(nir, nir_var_shader_in);
150 nir_assign_var_locations(nir, nir_var_shader_out, &nir->num_outputs,
151 ir3_glsl_type_size);
152 break;
153 case MESA_SHADER_COMPUTE:
154 case MESA_SHADER_KERNEL:
155 break;
156 default:
157 errx(1, "unhandled shader stage: %d", stage);
158 }
159
160 nir_assign_var_locations(nir, nir_var_uniform, &nir->num_uniforms,
161 ir3_glsl_type_size);
162
163 NIR_PASS_V(nir, nir_lower_system_values);
164 NIR_PASS_V(nir, nir_lower_compute_system_values, NULL);
165
166 NIR_PASS_V(nir, nir_lower_frexp);
167 NIR_PASS_V(nir, nir_lower_io,
168 nir_var_shader_in | nir_var_shader_out | nir_var_uniform,
169 ir3_glsl_type_size,
170 nir_lower_io_use_interpolated_input_intrinsics);
171 NIR_PASS_V(nir, gl_nir_lower_samplers, prog);
172
173 return nir;
174 }
175
176 static int
read_file(const char * filename,void ** ptr,size_t * size)177 read_file(const char *filename, void **ptr, size_t *size)
178 {
179 int fd, ret;
180 struct stat st;
181
182 *ptr = MAP_FAILED;
183
184 fd = open(filename, O_RDONLY);
185 if (fd == -1) {
186 warnx("couldn't open `%s'", filename);
187 return 1;
188 }
189
190 ret = fstat(fd, &st);
191 if (ret)
192 errx(1, "couldn't stat `%s'", filename);
193
194 *size = st.st_size;
195 *ptr = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
196 if (*ptr == MAP_FAILED)
197 errx(1, "couldn't map `%s'", filename);
198
199 close(fd);
200
201 return 0;
202 }
203
204 static void
debug_func(void * priv,enum nir_spirv_debug_level level,size_t spirv_offset,const char * message)205 debug_func(void *priv, enum nir_spirv_debug_level level, size_t spirv_offset,
206 const char *message)
207 {
208 // printf("%s\n", message);
209 }
210
211 static nir_shader *
load_spirv(const char * filename,const char * entry,gl_shader_stage stage)212 load_spirv(const char *filename, const char *entry, gl_shader_stage stage)
213 {
214 const struct spirv_capabilities spirv_caps = {
215 /* these caps are just make-believe */
216 .DrawParameters = true,
217 .Float64 = true,
218 .StorageImageReadWithoutFormat = true,
219 .StorageImageWriteWithoutFormat = true,
220 .Int64 = true,
221 .VariablePointers = true,
222 };
223 const struct spirv_to_nir_options spirv_options = {
224 .capabilities = &spirv_caps,
225 .debug = {
226 .func = debug_func,
227 }
228 };
229 nir_shader *nir;
230 void *buf;
231 size_t size;
232
233 read_file(filename, &buf, &size);
234
235 nir = spirv_to_nir(buf, size / 4, NULL, 0, /* spec_entries */
236 stage, entry, &spirv_options,
237 ir3_get_compiler_options(compiler));
238
239 const struct nir_lower_sysvals_to_varyings_options sysvals_to_varyings = {
240 .frag_coord = true,
241 .point_coord = true,
242 };
243 NIR_PASS_V(nir, nir_lower_sysvals_to_varyings, &sysvals_to_varyings);
244
245 nir_print_shader(nir, stdout);
246
247 return nir;
248 }
249
250 static const char *shortopts = "g:hv";
251
252 static const struct option longopts[] = {
253 {"gpu", required_argument, 0, 'g'},
254 {"help", no_argument, 0, 'h'},
255 {"verbose", no_argument, 0, 'v'},
256 };
257
258 static void
print_usage(void)259 print_usage(void)
260 {
261 printf("Usage: ir3_compiler [OPTIONS]... <file.tgsi | file.spv entry_point "
262 "| (file.vert | file.frag)*>\n");
263 printf(" -g, --gpu GPU_ID - specify gpu-id (default 320)\n");
264 printf(" -h, --help - show this message\n");
265 printf(" -v, --verbose - verbose compiler/debug messages\n");
266 }
267
268 int
main(int argc,char ** argv)269 main(int argc, char **argv)
270 {
271 int ret = 0, opt;
272 char *filenames[2];
273 int num_files = 0;
274 unsigned stage = 0;
275 struct ir3_shader_key key = {};
276 unsigned gpu_id = 320;
277 const char *info;
278 const char *spirv_entry = NULL;
279 void *ptr;
280 bool from_tgsi = false;
281 size_t size;
282
283 while ((opt = getopt_long_only(argc, argv, shortopts, longopts, NULL)) !=
284 -1) {
285 switch (opt) {
286 case 'g':
287 gpu_id = strtol(optarg, NULL, 0);
288 break;
289 case 'v':
290 ir3_shader_debug |= IR3_DBG_OPTMSGS | IR3_DBG_DISASM;
291 break;
292 default:
293 printf("unrecognized arg: %c\n", opt);
294 FALLTHROUGH;
295 case 'h':
296 print_usage();
297 return 0;
298 }
299 }
300
301 if (optind >= argc) {
302 fprintf(stderr, "no file specified!\n");
303 print_usage();
304 return 0;
305 }
306
307 unsigned n = optind;
308 while (n < argc) {
309 char *filename = argv[n];
310 char *ext = strrchr(filename, '.');
311
312 if (strcmp(ext, ".tgsi") == 0) {
313 if (num_files != 0)
314 errx(1, "in TGSI mode, only a single file may be specified");
315 from_tgsi = true;
316 } else if (strcmp(ext, ".spv") == 0) {
317 if (num_files != 0)
318 errx(1, "in SPIR-V mode, only a single file may be specified");
319 stage = MESA_SHADER_COMPUTE;
320 filenames[num_files++] = filename;
321 n++;
322 if (n == argc)
323 errx(1, "in SPIR-V mode, an entry point must be specified");
324 spirv_entry = argv[n];
325 n++;
326 } else if (strcmp(ext, ".comp") == 0) {
327 if (from_tgsi || spirv_entry)
328 errx(1, "cannot mix GLSL/TGSI/SPIRV");
329 if (num_files >= ARRAY_SIZE(filenames))
330 errx(1, "too many GLSL files");
331 stage = MESA_SHADER_COMPUTE;
332 } else if (strcmp(ext, ".frag") == 0) {
333 if (from_tgsi || spirv_entry)
334 errx(1, "cannot mix GLSL/TGSI/SPIRV");
335 if (num_files >= ARRAY_SIZE(filenames))
336 errx(1, "too many GLSL files");
337 stage = MESA_SHADER_FRAGMENT;
338 } else if (strcmp(ext, ".vert") == 0) {
339 if (from_tgsi)
340 errx(1, "cannot mix GLSL and TGSI");
341 if (num_files >= ARRAY_SIZE(filenames))
342 errx(1, "too many GLSL files");
343 stage = MESA_SHADER_VERTEX;
344 } else {
345 print_usage();
346 return -1;
347 }
348
349 filenames[num_files++] = filename;
350
351 n++;
352 }
353
354 nir_shader *nir;
355
356 struct fd_dev_id dev_id = {
357 .gpu_id = gpu_id,
358 };
359 compiler = ir3_compiler_create(NULL, &dev_id, fd_dev_info_raw(&dev_id),
360 &(struct ir3_compiler_options) {});
361
362 if (from_tgsi) {
363 struct tgsi_token toks[65536];
364 const nir_shader_compiler_options *nir_options =
365 ir3_get_compiler_options(compiler);
366
367 ret = read_file(filenames[0], &ptr, &size);
368 if (ret) {
369 print_usage();
370 return ret;
371 }
372
373 if (ir3_shader_debug & IR3_DBG_OPTMSGS)
374 printf("%s\n", (char *)ptr);
375
376 if (!tgsi_text_translate(ptr, toks, ARRAY_SIZE(toks)))
377 errx(1, "could not parse `%s'", filenames[0]);
378
379 if (ir3_shader_debug & IR3_DBG_OPTMSGS)
380 tgsi_dump(toks, 0);
381
382 nir = tgsi_to_nir_noscreen(toks, nir_options);
383 NIR_PASS_V(nir, nir_lower_global_vars_to_local);
384 } else if (spirv_entry) {
385 nir = load_spirv(filenames[0], spirv_entry, stage);
386
387 NIR_PASS_V(nir, nir_lower_io, nir_var_shader_in | nir_var_shader_out,
388 ir3_glsl_type_size,
389 nir_lower_io_use_interpolated_input_intrinsics);
390
391 /* TODO do this somewhere else */
392 nir_lower_int64(nir);
393 nir_lower_system_values(nir);
394 nir_lower_compute_system_values(nir, NULL);
395 } else if (num_files > 0) {
396 nir = load_glsl(num_files, filenames, stage);
397 } else {
398 print_usage();
399 return -1;
400 }
401
402 const struct ir3_shader_nir_options options = {};
403
404 ir3_nir_lower_io_to_temporaries(nir);
405 ir3_finalize_nir(compiler, &options, nir);
406
407 struct ir3_shader *shader = rzalloc_size(NULL, sizeof(*shader));
408 shader->compiler = compiler;
409 shader->type = stage;
410 shader->nir = nir;
411
412 ir3_nir_post_finalize(shader);
413
414 struct ir3_shader_variant *v = rzalloc_size(shader, sizeof(*v));
415 v->type = shader->type;
416 v->compiler = compiler;
417 v->key = key;
418 v->const_state = rzalloc_size(v, sizeof(*v->const_state));
419
420 shader->variants = v;
421 shader->variant_count = 1;
422
423 ir3_nir_lower_variant(v, &options, nir);
424
425 info = "NIR compiler";
426 ret = ir3_compile_shader_nir(compiler, shader, v);
427 if (ret) {
428 fprintf(stderr, "compiler failed!\n");
429 return ret;
430 }
431 dump_info(v, info);
432
433 return 0;
434 }
435