src/glsl/main.cpp

   1 /*
   2  * Copyright © 2008, 2009 Intel Corporation
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <getopt.h>
  24
  25 /** @file main.cpp
  26  *
  27  * This file is the main() routine and scaffolding for producing
  28  * builtin_compiler (which doesn't include builtins itself and is used
  29  * to generate the profile information for builtin_function.cpp), and
  30  * for glsl_compiler (which does include builtins and can be used to
  31  * offline compile GLSL code and examine the resulting GLSL IR.
  32  */
  33
  34 #include "ast.h"
  35 #include "glsl_parser_extras.h"
  36 #include "ir_optimization.h"
  37 #include "program.h"
  38 #include "program/hash_table.h"
  39 #include "loop_analysis.h"
  40 #include "standalone_scaffolding.h"
  41
  42 static int glsl_version = 330;
  43
  44 extern "C" void
  45 _mesa_error_no_memory(const char *caller)
  46 {
  47    fprintf(stderr, "Mesa error: out of memory in %s", caller);
  48 }
  49
  50 static void
  51 initialize_context(struct gl_context *ctx, gl_api api)
  52 {
  53    initialize_context_to_defaults(ctx, api);
  54
  55    /* The standalone compiler needs to claim support for almost
  56     * everything in order to compile the built-in functions.
  57     */
  58    ctx->Const.GLSLVersion = glsl_version;
  59    ctx->Extensions.ARB_ES3_compatibility = true;
  60    ctx->Const.MaxComputeWorkGroupCount[0] = 65535;
  61    ctx->Const.MaxComputeWorkGroupCount[1] = 65535;
  62    ctx->Const.MaxComputeWorkGroupCount[2] = 65535;
  63    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
  64    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
  65    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
  66    ctx->Const.MaxComputeWorkGroupInvocations = 1024;
  67    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
  68    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
  69    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */
  70    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxOutputComponents = 0; /* not used */
  71
  72    switch (ctx->Const.GLSLVersion) {
  73    case 100:
  74       ctx->Const.MaxClipPlanes = 0;
  75       ctx->Const.MaxCombinedTextureImageUnits = 8;
  76       ctx->Const.MaxDrawBuffers = 2;
  77       ctx->Const.MinProgramTexelOffset = 0;
  78       ctx->Const.MaxProgramTexelOffset = 0;
  79       ctx->Const.MaxLights = 0;
  80       ctx->Const.MaxTextureCoordUnits = 0;
  81       ctx->Const.MaxTextureUnits = 8;
  82
  83       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 8;
  84       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
  85       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 128 * 4;
  86       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
  87       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
  88
  89       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
  90          ctx->Const.MaxCombinedTextureImageUnits;
  91       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 16 * 4;
  92       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
  93          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
  94       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
  95
  96       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
  97       break;
  98    case 110:
  99    case 120:
 100       ctx->Const.MaxClipPlanes = 6;
 101       ctx->Const.MaxCombinedTextureImageUnits = 2;
 102       ctx->Const.MaxDrawBuffers = 1;
 103       ctx->Const.MinProgramTexelOffset = 0;
 104       ctx->Const.MaxProgramTexelOffset = 0;
 105       ctx->Const.MaxLights = 8;
 106       ctx->Const.MaxTextureCoordUnits = 2;
 107       ctx->Const.MaxTextureUnits = 2;
 108
 109       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 110       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
 111       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 512;
 112       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 113       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
 114
 115       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
 116          ctx->Const.MaxCombinedTextureImageUnits;
 117       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 64;
 118       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 119          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 120       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 121
 122       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
 123       break;
 124    case 130:
 125    case 140:
 126       ctx->Const.MaxClipPlanes = 8;
 127       ctx->Const.MaxCombinedTextureImageUnits = 16;
 128       ctx->Const.MaxDrawBuffers = 8;
 129       ctx->Const.MinProgramTexelOffset = -8;
 130       ctx->Const.MaxProgramTexelOffset = 7;
 131       ctx->Const.MaxLights = 8;
 132       ctx->Const.MaxTextureCoordUnits = 8;
 133       ctx->Const.MaxTextureUnits = 2;
 134
 135       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 136       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 137       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 138       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 139       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
 140
 141       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 142       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
 143       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 144          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 145       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 146
 147       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
 148       break;
 149    case 150:
 150    case 330:
 151       ctx->Const.MaxClipPlanes = 8;
 152       ctx->Const.MaxDrawBuffers = 8;
 153       ctx->Const.MinProgramTexelOffset = -8;
 154       ctx->Const.MaxProgramTexelOffset = 7;
 155       ctx->Const.MaxLights = 8;
 156       ctx->Const.MaxTextureCoordUnits = 8;
 157       ctx->Const.MaxTextureUnits = 2;
 158
 159       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 160       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 161       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 162       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 163       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
 164
 165       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = 16;
 166       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents = 1024;
 167       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents =
 168          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 169       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = 128;
 170
 171       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 172       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
 173       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 174          ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
 175       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 176
 177       ctx->Const.MaxCombinedTextureImageUnits =
 178          ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits
 179          + ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits
 180          + ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
 181
 182       ctx->Const.MaxGeometryOutputVertices = 256;
 183       ctx->Const.MaxGeometryTotalOutputComponents = 1024;
 184
 185       ctx->Const.MaxVarying = 60 / 4;
 186       break;
 187    case 300:
 188       ctx->Const.MaxClipPlanes = 8;
 189       ctx->Const.MaxCombinedTextureImageUnits = 32;
 190       ctx->Const.MaxDrawBuffers = 4;
 191       ctx->Const.MinProgramTexelOffset = -8;
 192       ctx->Const.MaxProgramTexelOffset = 7;
 193       ctx->Const.MaxLights = 0;
 194       ctx->Const.MaxTextureCoordUnits = 0;
 195       ctx->Const.MaxTextureUnits = 0;
 196
 197       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 198       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 199       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 200       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 201       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 16 * 4;
 202
 203       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 204       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 224;
 205       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 15 * 4;
 206       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 207
 208       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents / 4;
 209       break;
 210    }
 211
 212    ctx->Const.GenerateTemporaryNames = true;
 213    ctx->Driver.NewShader = _mesa_new_shader;
 214 }
 215
 216 /* Returned string will have 'ctx' as its ralloc owner. */
 217 static char *
 218 load_text_file(void *ctx, const char *file_name)
 219 {
 220         char *text = NULL;
 221         size_t size;
 222         size_t total_read = 0;
 223         FILE *fp = fopen(file_name, "rb");
 224
 225         if (!fp) {
 226                 return NULL;
 227         }
 228
 229         fseek(fp, 0L, SEEK_END);
 230         size = ftell(fp);
 231         fseek(fp, 0L, SEEK_SET);
 232
 233         text = (char *) ralloc_size(ctx, size + 1);
 234         if (text != NULL) {
 235                 do {
 236                         size_t bytes = fread(text + total_read,
 237                                              1, size - total_read, fp);
 238                         if (bytes < size - total_read) {
 239                                 free(text);
 240                                 text = NULL;
 241                                 goto error;
 242                         }
 243
 244                         if (bytes == 0) {
 245                                 break;
 246                         }
 247
 248                         total_read += bytes;
 249                 } while (total_read < size);
 250
 251                 text[total_read] = '\0';
 252 error:;
 253         }
 254
 255         fclose(fp);
 256
 257         return text;
 258 }
 259
 260 int dump_ast = 0;
 261 int dump_hir = 0;
 262 int dump_lir = 0;
 263 int do_link = 0;
 264
 265 const struct option compiler_opts[] = {
 266    { "dump-ast", no_argument, &dump_ast, 1 },
 267    { "dump-hir", no_argument, &dump_hir, 1 },
 268    { "dump-lir", no_argument, &dump_lir, 1 },
 269    { "link",     no_argument, &do_link,  1 },
 270    { "version",  required_argument, NULL, 'v' },
 271    { NULL, 0, NULL, 0 }
 272 };
 273
 274 /**
 275  * \brief Print proper usage and exit with failure.
 276  */
 277 void
 278 usage_fail(const char *name)
 279 {
 280
 281    const char *header =
 282       "usage: %s [options] <file.vert | file.geom | file.frag>\n"
 283       "\n"
 284       "Possible options are:\n";
 285    printf(header, name, name);
 286    for (const struct option *o = compiler_opts; o->name != 0; ++o) {
 287       printf("    --%s\n", o->name);
 288    }
 289    exit(EXIT_FAILURE);
 290 }
 291
 292
 293 void
 294 compile_shader(struct gl_context *ctx, struct gl_shader *shader)
 295 {
 296    struct _mesa_glsl_parse_state *state =
 297       new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
 298
 299    _mesa_glsl_compile_shader(ctx, shader, dump_ast, dump_hir);
 300
 301    /* Print out the resulting IR */
 302    if (!state->error && dump_lir) {
 303       _mesa_print_ir(stdout, shader->ir, state);
 304    }
 305
 306    return;
 307 }
 308
 309 int
 310 main(int argc, char **argv)
 311 {
 312    int status = EXIT_SUCCESS;
 313    struct gl_context local_ctx;
 314    struct gl_context *ctx = &local_ctx;
 315    bool glsl_es = false;
 316
 317    int c;
 318    int idx = 0;
 319    while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1) {
 320       switch (c) {
 321       case 'v':
 322          glsl_version = strtol(optarg, NULL, 10);
 323          switch (glsl_version) {
 324          case 100:
 325          case 300:
 326             glsl_es = true;
 327             break;
 328          case 110:
 329          case 120:
 330          case 130:
 331          case 140:
 332          case 150:
 333          case 330:
 334             glsl_es = false;
 335             break;
 336          default:
 337             fprintf(stderr, "Unrecognized GLSL version `%s'\n", optarg);
 338             usage_fail(argv[0]);
 339             break;
 340          }
 341          break;
 342       default:
 343          break;
 344       }
 345    }
 346
 347
 348    if (argc <= optind)
 349       usage_fail(argv[0]);
 350
 351    initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL_COMPAT);
 352
 353    struct gl_shader_program *whole_program;
 354
 355    whole_program = rzalloc (NULL, struct gl_shader_program);
 356    assert(whole_program != NULL);
 357    whole_program->InfoLog = ralloc_strdup(whole_program, "");
 358
 359    /* Created just to avoid segmentation faults */
 360    whole_program->AttributeBindings = new string_to_uint_map;
 361    whole_program->FragDataBindings = new string_to_uint_map;
 362    whole_program->FragDataIndexBindings = new string_to_uint_map;
 363
 364    for (/* empty */; argc > optind; optind++) {
 365       whole_program->Shaders =
 366          reralloc(whole_program, whole_program->Shaders,
 367                   struct gl_shader *, whole_program->NumShaders + 1);
 368       assert(whole_program->Shaders != NULL);
 369
 370       struct gl_shader *shader = rzalloc(whole_program, gl_shader);
 371
 372       whole_program->Shaders[whole_program->NumShaders] = shader;
 373       whole_program->NumShaders++;
 374
 375       const unsigned len = strlen(argv[optind]);
 376       if (len < 6)
 377          usage_fail(argv[0]);
 378
 379       const char *const ext = & argv[optind][len - 5];
 380       if (strncmp(".vert", ext, 5) == 0 || strncmp(".glsl", ext, 5) == 0)
 381          shader->Type = GL_VERTEX_SHADER;
 382       else if (strncmp(".geom", ext, 5) == 0)
 383          shader->Type = GL_GEOMETRY_SHADER;
 384       else if (strncmp(".frag", ext, 5) == 0)
 385          shader->Type = GL_FRAGMENT_SHADER;
 386       else if (strncmp(".comp", ext, 5) == 0)
 387          shader->Type = GL_COMPUTE_SHADER;
 388       else
 389          usage_fail(argv[0]);
 390       shader->Stage = _mesa_shader_enum_to_shader_stage(shader->Type);
 391
 392       shader->Source = load_text_file(whole_program, argv[optind]);
 393       if (shader->Source == NULL) {
 394          printf("File \"%s\" does not exist.\n", argv[optind]);
 395          exit(EXIT_FAILURE);
 396       }
 397
 398       compile_shader(ctx, shader);
 399
 400       if (strlen(shader->InfoLog) > 0)
 401          printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
 402
 403       if (!shader->CompileStatus) {
 404          status = EXIT_FAILURE;
 405          break;
 406       }
 407    }
 408
 409    if ((status == EXIT_SUCCESS) && do_link)  {
 410       _mesa_clear_shader_program_data(whole_program);
 411
 412       link_shaders(ctx, whole_program);
 413       status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
 414
 415       if (strlen(whole_program->InfoLog) > 0)
 416          printf("Info log for linking:\n%s\n", whole_program->InfoLog);
 417    }
 418
 419    for (unsigned i = 0; i < MESA_SHADER_STAGES; i++)
 420       ralloc_free(whole_program->_LinkedShaders[i]);
 421
 422    delete whole_program->AttributeBindings;
 423    delete whole_program->FragDataBindings;
 424    delete whole_program->FragDataIndexBindings;
 425
 426    ralloc_free(whole_program);
 427    _mesa_glsl_release_types();
 428    _mesa_glsl_release_builtin_functions();
 429
 430    return status;
 431 }