src/gallium/drivers/freedreno/ir3/ir3_cmdline.c

   1 /*
   2  * Copyright (C) 2014 Rob Clark <robclark@freedesktop.org>
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <sys/mman.h>
  30 #include <fcntl.h>
  31 #include <stdint.h>
  32 #include <stdlib.h>
  33 #include <err.h>
  34
  35 #include "tgsi/tgsi_parse.h"
  36 #include "tgsi/tgsi_text.h"
  37 #include "tgsi/tgsi_dump.h"
  38
  39 #include "freedreno_util.h"
  40
  41 #include "ir3_compiler.h"
  42 #include "instr-a3xx.h"
  43 #include "ir3.h"
  44
  45 static void dump_reg(const char *name, uint32_t r)
  46 {
  47         if (r != regid(63,0))
  48                 debug_printf("; %s: r%d.%c\n", name, r >> 2, "xyzw"[r & 0x3]);
  49 }
  50
  51 static void dump_semantic(struct ir3_shader_variant *so,
  52                 unsigned sem, const char *name)
  53 {
  54         uint32_t regid;
  55         regid = ir3_find_output_regid(so, ir3_semantic_name(sem, 0));
  56         dump_reg(name, regid);
  57 }
  58
  59 static void dump_info(struct ir3_shader_variant *so, const char *str)
  60 {
  61         uint32_t *bin;
  62         const char *type = (so->type == SHADER_VERTEX) ? "VERT" : "FRAG";
  63
  64         // for debug, dump some before/after info:
  65         // TODO make gpu_id configurable on cmdline
  66         bin = ir3_shader_assemble(so, 320);
  67         if (fd_mesa_debug & FD_DBG_DISASM) {
  68                 struct ir3_block *block = so->ir->block;
  69                 struct ir3_register *reg;
  70                 uint8_t regid;
  71                 unsigned i;
  72
  73                 debug_printf("; %s: %s\n", type, str);
  74
  75                 for (i = 0; i < block->ninputs; i++) {
  76                         if (!block->inputs[i]) {
  77                                 debug_printf("; in%d unused\n", i);
  78                                 continue;
  79                         }
  80                         reg = block->inputs[i]->regs[0];
  81                         regid = reg->num;
  82                         debug_printf("@in(%sr%d.%c)\tin%d\n",
  83                                         (reg->flags & IR3_REG_HALF) ? "h" : "",
  84                                         (regid >> 2), "xyzw"[regid & 0x3], i);
  85                 }
  86
  87                 for (i = 0; i < block->noutputs; i++) {
  88                         if (!block->outputs[i]) {
  89                                 debug_printf("; out%d unused\n", i);
  90                                 continue;
  91                         }
  92                         /* kill shows up as a virtual output.. skip it! */
  93                         if (is_kill(block->outputs[i]))
  94                                 continue;
  95                         reg = block->outputs[i]->regs[0];
  96                         regid = reg->num;
  97                         debug_printf("@out(%sr%d.%c)\tout%d\n",
  98                                         (reg->flags & IR3_REG_HALF) ? "h" : "",
  99                                         (regid >> 2), "xyzw"[regid & 0x3], i);
 100                 }
 101
 102                 disasm_a3xx(bin, so->info.sizedwords, 0, so->type);
 103
 104                 debug_printf("; %s: outputs:", type);
 105                 for (i = 0; i < so->outputs_count; i++) {
 106                         uint8_t regid = so->outputs[i].regid;
 107                         ir3_semantic sem = so->outputs[i].semantic;
 108                         debug_printf(" r%d.%c (%u:%u)",
 109                                         (regid >> 2), "xyzw"[regid & 0x3],
 110                                         sem2name(sem), sem2idx(sem));
 111                 }
 112                 debug_printf("\n");
 113                 debug_printf("; %s: inputs:", type);
 114                 for (i = 0; i < so->inputs_count; i++) {
 115                         uint8_t regid = so->inputs[i].regid;
 116                         ir3_semantic sem = so->inputs[i].semantic;
 117                         debug_printf(" r%d.%c (%u:%u,cm=%x,il=%u,b=%u)",
 118                                         (regid >> 2), "xyzw"[regid & 0x3],
 119                                         sem2name(sem), sem2idx(sem),
 120                                         so->inputs[i].compmask,
 121                                         so->inputs[i].inloc,
 122                                         so->inputs[i].bary);
 123                 }
 124                 debug_printf("\n");
 125         }
 126
 127         /* print generic shader info: */
 128         debug_printf("; %s: %u instructions, %d half, %d full\n", type,
 129                         so->info.instrs_count,
 130                         so->info.max_half_reg + 1,
 131                         so->info.max_reg + 1);
 132
 133         /* print shader type specific info: */
 134         switch (so->type) {
 135         case SHADER_VERTEX:
 136                 dump_semantic(so, TGSI_SEMANTIC_POSITION, "pos");
 137                 dump_semantic(so, TGSI_SEMANTIC_PSIZE, "psize");
 138                 break;
 139         case SHADER_FRAGMENT:
 140                 dump_reg("pos (bary)", so->pos_regid);
 141                 dump_semantic(so, TGSI_SEMANTIC_POSITION, "posz");
 142                 dump_semantic(so, TGSI_SEMANTIC_COLOR, "color");
 143                 /* these two are hard-coded since we don't know how to
 144                  * program them to anything but all 0's...
 145                  */
 146                 if (so->frag_coord)
 147                         debug_printf("; fragcoord: r0.x\n");
 148                 if (so->frag_face)
 149                         debug_printf("; fragface: hr0.x\n");
 150                 break;
 151         case SHADER_COMPUTE:
 152                 break;
 153         }
 154         free(bin);
 155
 156         debug_printf("\n");
 157 }
 158
 159
 160 static int
 161 read_file(const char *filename, void **ptr, size_t *size)
 162 {
 163         int fd, ret;
 164         struct stat st;
 165
 166         *ptr = MAP_FAILED;
 167
 168         fd = open(filename, O_RDONLY);
 169         if (fd == -1) {
 170                 warnx("couldn't open `%s'", filename);
 171                 return 1;
 172         }
 173
 174         ret = fstat(fd, &st);
 175         if (ret)
 176                 errx(1, "couldn't stat `%s'", filename);
 177
 178         *size = st.st_size;
 179         *ptr = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
 180         if (*ptr == MAP_FAILED)
 181                 errx(1, "couldn't map `%s'", filename);
 182
 183         close(fd);
 184
 185         return 0;
 186 }
 187
 188 static void reset_variant(struct ir3_shader_variant *v, const char *msg)
 189 {
 190         printf("; %s\n", msg);
 191         v->inputs_count = 0;
 192         v->outputs_count = 0;
 193         v->total_in = 0;
 194         v->has_samp = false;
 195         v->immediates_count = 0;
 196 }
 197
 198 static void print_usage(void)
 199 {
 200         printf("Usage: ir3_compiler [OPTIONS]... FILE\n");
 201         printf("    --verbose         - verbose compiler/debug messages\n");
 202         printf("    --binning-pass    - generate binning pass shader (VERT)\n");
 203         printf("    --color-two-side  - emulate two-sided color (FRAG)\n");
 204         printf("    --half-precision  - use half-precision\n");
 205         printf("    --saturate-s MASK - bitmask of samplers to saturate S coord\n");
 206         printf("    --saturate-t MASK - bitmask of samplers to saturate T coord\n");
 207         printf("    --saturate-r MASK - bitmask of samplers to saturate R coord\n");
 208         printf("    --nocp            - disable copy propagation\n");
 209         printf("    --help            - show this message\n");
 210 }
 211
 212 int main(int argc, char **argv)
 213 {
 214         int ret = 0, n = 1;
 215         const char *filename;
 216         struct tgsi_token toks[65536];
 217         struct tgsi_parse_context parse;
 218         struct ir3_shader_variant v;
 219         struct ir3_shader_key key = {};
 220         const char *info;
 221         void *ptr;
 222         size_t size;
 223
 224         fd_mesa_debug |= FD_DBG_DISASM;
 225
 226         /* cmdline args which impact shader variant get spit out in a
 227          * comment on the first line..  a quick/dirty way to preserve
 228          * that info so when ir3test recompiles the shader with a new
 229          * compiler version, we use the same shader-key settings:
 230          */
 231         debug_printf("; options:");
 232
 233         while (n < argc) {
 234                 if (!strcmp(argv[n], "--verbose")) {
 235                         fd_mesa_debug |=  FD_DBG_OPTDUMP | FD_DBG_MSGS | FD_DBG_OPTMSGS;
 236                         n++;
 237                         continue;
 238                 }
 239
 240                 if (!strcmp(argv[n], "--binning-pass")) {
 241                         debug_printf(" %s", argv[n]);
 242                         key.binning_pass = true;
 243                         n++;
 244                         continue;
 245                 }
 246
 247                 if (!strcmp(argv[n], "--color-two-side")) {
 248                         debug_printf(" %s", argv[n]);
 249                         key.color_two_side = true;
 250                         n++;
 251                         continue;
 252                 }
 253
 254                 if (!strcmp(argv[n], "--half-precision")) {
 255                         debug_printf(" %s", argv[n]);
 256                         key.half_precision = true;
 257                         n++;
 258                         continue;
 259                 }
 260
 261                 if (!strcmp(argv[n], "--saturate-s")) {
 262                         debug_printf(" %s %s", argv[n], argv[n+1]);
 263                         key.vsaturate_s = key.fsaturate_s = strtol(argv[n+1], NULL, 0);
 264                         n += 2;
 265                         continue;
 266                 }
 267
 268                 if (!strcmp(argv[n], "--saturate-t")) {
 269                         debug_printf(" %s %s", argv[n], argv[n+1]);
 270                         key.vsaturate_t = key.fsaturate_t = strtol(argv[n+1], NULL, 0);
 271                         n += 2;
 272                         continue;
 273                 }
 274
 275                 if (!strcmp(argv[n], "--saturate-r")) {
 276                         debug_printf(" %s %s", argv[n], argv[n+1]);
 277                         key.vsaturate_r = key.fsaturate_r = strtol(argv[n+1], NULL, 0);
 278                         n += 2;
 279                         continue;
 280                 }
 281
 282                 if (!strcmp(argv[n], "--nocp")) {
 283                         fd_mesa_debug |= FD_DBG_NOCP;
 284                         n++;
 285                         continue;
 286                 }
 287
 288                 if (!strcmp(argv[n], "--help")) {
 289                         print_usage();
 290                         return 0;
 291                 }
 292
 293                 break;
 294         }
 295         debug_printf("\n");
 296
 297         filename = argv[n];
 298
 299         memset(&v, 0, sizeof(v));
 300         v.key = key;
 301
 302         ret = read_file(filename, &ptr, &size);
 303         if (ret) {
 304                 print_usage();
 305                 return ret;
 306         }
 307
 308         if (fd_mesa_debug & FD_DBG_OPTMSGS)
 309                 debug_printf("%s\n", (char *)ptr);
 310
 311         if (!tgsi_text_translate(ptr, toks, Elements(toks)))
 312                 errx(1, "could not parse `%s'", filename);
 313
 314         tgsi_parse_init(&parse, toks);
 315         switch (parse.FullHeader.Processor.Processor) {
 316         case TGSI_PROCESSOR_FRAGMENT:
 317                 v.type = SHADER_FRAGMENT;
 318                 break;
 319         case TGSI_PROCESSOR_VERTEX:
 320                 v.type = SHADER_VERTEX;
 321                 break;
 322         case TGSI_PROCESSOR_COMPUTE:
 323                 v.type = SHADER_COMPUTE;
 324                 break;
 325         }
 326
 327         info = "compiler";
 328         ret = ir3_compile_shader(&v, toks, key, true);
 329
 330         if (ret) {
 331                 reset_variant(&v, "compiler failed, trying without copy propagation!");
 332                 info = "compiler (no copy propagation)";
 333                 ret = ir3_compile_shader(&v, toks, key, false);
 334         }
 335
 336         if (ret) {
 337                 fprintf(stderr, "compiler failed!\n");
 338                 return ret;
 339         }
 340         dump_info(&v, info);
 341 }