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                 for (i = 0; i < so->immediates_count; i++) {
 103                         debug_printf("@const(c%d.x)\t", so->first_immediate + i);
 104                         debug_printf("0x%08x, 0x%08x, 0x%08x, 0x%08x\n",
 105                                         so->immediates[i].val[0],
 106                                         so->immediates[i].val[1],
 107                                         so->immediates[i].val[2],
 108                                         so->immediates[i].val[3]);
 109                 }
 110
 111                 disasm_a3xx(bin, so->info.sizedwords, 0, so->type);
 112
 113                 debug_printf("; %s: outputs:", type);
 114                 for (i = 0; i < so->outputs_count; i++) {
 115                         uint8_t regid = so->outputs[i].regid;
 116                         ir3_semantic sem = so->outputs[i].semantic;
 117                         debug_printf(" r%d.%c (%u:%u)",
 118                                         (regid >> 2), "xyzw"[regid & 0x3],
 119                                         sem2name(sem), sem2idx(sem));
 120                 }
 121                 debug_printf("\n");
 122                 debug_printf("; %s: inputs:", type);
 123                 for (i = 0; i < so->inputs_count; i++) {
 124                         uint8_t regid = so->inputs[i].regid;
 125                         ir3_semantic sem = so->inputs[i].semantic;
 126                         debug_printf(" r%d.%c (%u:%u,cm=%x,il=%u,b=%u)",
 127                                         (regid >> 2), "xyzw"[regid & 0x3],
 128                                         sem2name(sem), sem2idx(sem),
 129                                         so->inputs[i].compmask,
 130                                         so->inputs[i].inloc,
 131                                         so->inputs[i].bary);
 132                 }
 133                 debug_printf("\n");
 134         }
 135
 136         /* print generic shader info: */
 137         debug_printf("; %s: %u instructions, %d half, %d full\n", type,
 138                         so->info.instrs_count,
 139                         so->info.max_half_reg + 1,
 140                         so->info.max_reg + 1);
 141
 142         /* print shader type specific info: */
 143         switch (so->type) {
 144         case SHADER_VERTEX:
 145                 dump_semantic(so, TGSI_SEMANTIC_POSITION, "pos");
 146                 dump_semantic(so, TGSI_SEMANTIC_PSIZE, "psize");
 147                 break;
 148         case SHADER_FRAGMENT:
 149                 dump_reg("pos (bary)", so->pos_regid);
 150                 dump_semantic(so, TGSI_SEMANTIC_POSITION, "posz");
 151                 dump_semantic(so, TGSI_SEMANTIC_COLOR, "color");
 152                 /* these two are hard-coded since we don't know how to
 153                  * program them to anything but all 0's...
 154                  */
 155                 if (so->frag_coord)
 156                         debug_printf("; fragcoord: r0.x\n");
 157                 if (so->frag_face)
 158                         debug_printf("; fragface: hr0.x\n");
 159                 break;
 160         case SHADER_COMPUTE:
 161                 break;
 162         }
 163         free(bin);
 164
 165         debug_printf("\n");
 166 }
 167
 168
 169 static int
 170 read_file(const char *filename, void **ptr, size_t *size)
 171 {
 172         int fd, ret;
 173         struct stat st;
 174
 175         *ptr = MAP_FAILED;
 176
 177         fd = open(filename, O_RDONLY);
 178         if (fd == -1) {
 179                 warnx("couldn't open `%s'", filename);
 180                 return 1;
 181         }
 182
 183         ret = fstat(fd, &st);
 184         if (ret)
 185                 errx(1, "couldn't stat `%s'", filename);
 186
 187         *size = st.st_size;
 188         *ptr = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
 189         if (*ptr == MAP_FAILED)
 190                 errx(1, "couldn't map `%s'", filename);
 191
 192         close(fd);
 193
 194         return 0;
 195 }
 196
 197 static void reset_variant(struct ir3_shader_variant *v, const char *msg)
 198 {
 199         printf("; %s\n", msg);
 200         v->inputs_count = 0;
 201         v->outputs_count = 0;
 202         v->total_in = 0;
 203         v->has_samp = false;
 204         v->immediates_count = 0;
 205 }
 206
 207 static void print_usage(void)
 208 {
 209         printf("Usage: ir3_compiler [OPTIONS]... FILE\n");
 210         printf("    --verbose         - verbose compiler/debug messages\n");
 211         printf("    --binning-pass    - generate binning pass shader (VERT)\n");
 212         printf("    --color-two-side  - emulate two-sided color (FRAG)\n");
 213         printf("    --half-precision  - use half-precision\n");
 214         printf("    --saturate-s MASK - bitmask of samplers to saturate S coord\n");
 215         printf("    --saturate-t MASK - bitmask of samplers to saturate T coord\n");
 216         printf("    --saturate-r MASK - bitmask of samplers to saturate R coord\n");
 217         printf("    --nocp            - disable copy propagation\n");
 218         printf("    --help            - show this message\n");
 219 }
 220
 221 int main(int argc, char **argv)
 222 {
 223         int ret = 0, n = 1;
 224         const char *filename;
 225         struct tgsi_token toks[65536];
 226         struct tgsi_parse_context parse;
 227         struct ir3_shader_variant v;
 228         struct ir3_shader_key key = {};
 229         const char *info;
 230         void *ptr;
 231         size_t size;
 232
 233         fd_mesa_debug |= FD_DBG_DISASM;
 234
 235         /* cmdline args which impact shader variant get spit out in a
 236          * comment on the first line..  a quick/dirty way to preserve
 237          * that info so when ir3test recompiles the shader with a new
 238          * compiler version, we use the same shader-key settings:
 239          */
 240         debug_printf("; options:");
 241
 242         while (n < argc) {
 243                 if (!strcmp(argv[n], "--verbose")) {
 244                         fd_mesa_debug |=  FD_DBG_OPTDUMP | FD_DBG_MSGS | FD_DBG_OPTMSGS;
 245                         n++;
 246                         continue;
 247                 }
 248
 249                 if (!strcmp(argv[n], "--binning-pass")) {
 250                         debug_printf(" %s", argv[n]);
 251                         key.binning_pass = true;
 252                         n++;
 253                         continue;
 254                 }
 255
 256                 if (!strcmp(argv[n], "--color-two-side")) {
 257                         debug_printf(" %s", argv[n]);
 258                         key.color_two_side = true;
 259                         n++;
 260                         continue;
 261                 }
 262
 263                 if (!strcmp(argv[n], "--half-precision")) {
 264                         debug_printf(" %s", argv[n]);
 265                         key.half_precision = true;
 266                         n++;
 267                         continue;
 268                 }
 269
 270                 if (!strcmp(argv[n], "--saturate-s")) {
 271                         debug_printf(" %s %s", argv[n], argv[n+1]);
 272                         key.vsaturate_s = key.fsaturate_s = strtol(argv[n+1], NULL, 0);
 273                         n += 2;
 274                         continue;
 275                 }
 276
 277                 if (!strcmp(argv[n], "--saturate-t")) {
 278                         debug_printf(" %s %s", argv[n], argv[n+1]);
 279                         key.vsaturate_t = key.fsaturate_t = strtol(argv[n+1], NULL, 0);
 280                         n += 2;
 281                         continue;
 282                 }
 283
 284                 if (!strcmp(argv[n], "--saturate-r")) {
 285                         debug_printf(" %s %s", argv[n], argv[n+1]);
 286                         key.vsaturate_r = key.fsaturate_r = strtol(argv[n+1], NULL, 0);
 287                         n += 2;
 288                         continue;
 289                 }
 290
 291                 if (!strcmp(argv[n], "--nocp")) {
 292                         fd_mesa_debug |= FD_DBG_NOCP;
 293                         n++;
 294                         continue;
 295                 }
 296
 297                 if (!strcmp(argv[n], "--help")) {
 298                         print_usage();
 299                         return 0;
 300                 }
 301
 302                 break;
 303         }
 304         debug_printf("\n");
 305
 306         filename = argv[n];
 307
 308         memset(&v, 0, sizeof(v));
 309         v.key = key;
 310
 311         ret = read_file(filename, &ptr, &size);
 312         if (ret) {
 313                 print_usage();
 314                 return ret;
 315         }
 316
 317         if (fd_mesa_debug & FD_DBG_OPTMSGS)
 318                 debug_printf("%s\n", (char *)ptr);
 319
 320         if (!tgsi_text_translate(ptr, toks, Elements(toks)))
 321                 errx(1, "could not parse `%s'", filename);
 322
 323         tgsi_parse_init(&parse, toks);
 324         switch (parse.FullHeader.Processor.Processor) {
 325         case TGSI_PROCESSOR_FRAGMENT:
 326                 v.type = SHADER_FRAGMENT;
 327                 break;
 328         case TGSI_PROCESSOR_VERTEX:
 329                 v.type = SHADER_VERTEX;
 330                 break;
 331         case TGSI_PROCESSOR_COMPUTE:
 332                 v.type = SHADER_COMPUTE;
 333                 break;
 334         }
 335
 336         info = "compiler";
 337         ret = ir3_compile_shader(&v, toks, key, true);
 338
 339         if (ret) {
 340                 reset_variant(&v, "compiler failed, trying without copy propagation!");
 341                 info = "compiler (no copy propagation)";
 342                 ret = ir3_compile_shader(&v, toks, key, false);
 343         }
 344
 345         if (ret) {
 346                 fprintf(stderr, "compiler failed!\n");
 347                 return ret;
 348         }
 349         dump_info(&v, info);
 350 }