src/compiler/glsl/standalone.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 standalone.cpp
  26  *
  27  * Standalone compiler helper lib.  Used by standalone glsl_compiler and
  28  * also available to drivers to implement their own standalone compiler
  29  * with driver backend.
  30  */
  31
  32 #include "ast.h"
  33 #include "glsl_parser_extras.h"
  34 #include "ir_optimization.h"
  35 #include "program.h"
  36 #include "loop_analysis.h"
  37 #include "standalone_scaffolding.h"
  38 #include "standalone.h"
  39 #include "string_to_uint_map.h"
  40 #include "util/set.h"
  41 #include "linker.h"
  42 #include "glsl_parser_extras.h"
  43 #include "ir_builder_print_visitor.h"
  44 #include "builtin_functions.h"
  45 #include "opt_add_neg_to_sub.h"
  46 #include "main/mtypes.h"
  47
  48 class dead_variable_visitor : public ir_hierarchical_visitor {
  49 public:
  50    dead_variable_visitor()
  51    {
  52       variables = _mesa_set_create(NULL,
  53                                    _mesa_hash_pointer,
  54                                    _mesa_key_pointer_equal);
  55    }
  56
  57    virtual ~dead_variable_visitor()
  58    {
  59       _mesa_set_destroy(variables, NULL);
  60    }
  61
  62    virtual ir_visitor_status visit(ir_variable *ir)
  63    {
  64       /* If the variable is auto or temp, add it to the set of variables that
  65        * are candidates for removal.
  66        */
  67       if (ir->data.mode != ir_var_auto && ir->data.mode != ir_var_temporary)
  68          return visit_continue;
  69
  70       _mesa_set_add(variables, ir);
  71
  72       return visit_continue;
  73    }
  74
  75    virtual ir_visitor_status visit(ir_dereference_variable *ir)
  76    {
  77       struct set_entry *entry = _mesa_set_search(variables, ir->var);
  78
  79       /* If a variable is dereferenced at all, remove it from the set of
  80        * variables that are candidates for removal.
  81        */
  82       if (entry != NULL)
  83          _mesa_set_remove(variables, entry);
  84
  85       return visit_continue;
  86    }
  87
  88    void remove_dead_variables()
  89    {
  90       struct set_entry *entry;
  91
  92       set_foreach(variables, entry) {
  93          ir_variable *ir = (ir_variable *) entry->key;
  94
  95          assert(ir->ir_type == ir_type_variable);
  96          ir->remove();
  97       }
  98    }
  99
 100 private:
 101    set *variables;
 102 };
 103
 104 static void
 105 init_gl_program(struct gl_program *prog, bool is_arb_asm)
 106 {
 107    prog->RefCount = 1;
 108    prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
 109    prog->is_arb_asm = is_arb_asm;
 110 }
 111
 112 static struct gl_program *
 113 new_program(UNUSED struct gl_context *ctx, GLenum target,
 114             UNUSED GLuint id, bool is_arb_asm)
 115 {
 116    switch (target) {
 117    case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
 118    case GL_GEOMETRY_PROGRAM_NV:
 119    case GL_TESS_CONTROL_PROGRAM_NV:
 120    case GL_TESS_EVALUATION_PROGRAM_NV:
 121    case GL_FRAGMENT_PROGRAM_ARB:
 122    case GL_COMPUTE_PROGRAM_NV: {
 123       struct gl_program *prog = rzalloc(NULL, struct gl_program);
 124       init_gl_program(prog, is_arb_asm);
 125       return prog;
 126    }
 127    default:
 128       printf("bad target in new_program\n");
 129       return NULL;
 130    }
 131 }
 132
 133 static const struct standalone_options *options;
 134
 135 static void
 136 initialize_context(struct gl_context *ctx, gl_api api)
 137 {
 138    initialize_context_to_defaults(ctx, api);
 139
 140    /* The standalone compiler needs to claim support for almost
 141     * everything in order to compile the built-in functions.
 142     */
 143    ctx->Const.GLSLVersion = options->glsl_version;
 144    ctx->Extensions.ARB_ES3_compatibility = true;
 145    ctx->Const.MaxComputeWorkGroupCount[0] = 65535;
 146    ctx->Const.MaxComputeWorkGroupCount[1] = 65535;
 147    ctx->Const.MaxComputeWorkGroupCount[2] = 65535;
 148    ctx->Const.MaxComputeWorkGroupSize[0] = 1024;
 149    ctx->Const.MaxComputeWorkGroupSize[1] = 1024;
 150    ctx->Const.MaxComputeWorkGroupSize[2] = 64;
 151    ctx->Const.MaxComputeWorkGroupInvocations = 1024;
 152    ctx->Const.MaxComputeSharedMemorySize = 32768;
 153    ctx->Const.MaxComputeVariableGroupSize[0] = 512;
 154    ctx->Const.MaxComputeVariableGroupSize[1] = 512;
 155    ctx->Const.MaxComputeVariableGroupSize[2] = 64;
 156    ctx->Const.MaxComputeVariableGroupInvocations = 512;
 157    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxTextureImageUnits = 16;
 158    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformComponents = 1024;
 159    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxCombinedUniformComponents = 1024;
 160    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxInputComponents = 0; /* not used */
 161    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxOutputComponents = 0; /* not used */
 162    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicBuffers = 8;
 163    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxAtomicCounters = 8;
 164    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxImageUniforms = 8;
 165    ctx->Const.Program[MESA_SHADER_COMPUTE].MaxUniformBlocks = 12;
 166
 167    switch (ctx->Const.GLSLVersion) {
 168    case 100:
 169       ctx->Const.MaxClipPlanes = 0;
 170       ctx->Const.MaxCombinedTextureImageUnits = 8;
 171       ctx->Const.MaxDrawBuffers = 2;
 172       ctx->Const.MinProgramTexelOffset = 0;
 173       ctx->Const.MaxProgramTexelOffset = 0;
 174       ctx->Const.MaxLights = 0;
 175       ctx->Const.MaxTextureCoordUnits = 0;
 176       ctx->Const.MaxTextureUnits = 8;
 177
 178       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 8;
 179       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
 180       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 128 * 4;
 181       ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 128 * 4;
 182       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 183       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
 184
 185       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
 186          ctx->Const.MaxCombinedTextureImageUnits;
 187       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 16 * 4;
 188       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 16 * 4;
 189       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 190          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 191       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 192
 193       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
 194       break;
 195    case 110:
 196    case 120:
 197       ctx->Const.MaxClipPlanes = 6;
 198       ctx->Const.MaxCombinedTextureImageUnits = 2;
 199       ctx->Const.MaxDrawBuffers = 1;
 200       ctx->Const.MinProgramTexelOffset = 0;
 201       ctx->Const.MaxProgramTexelOffset = 0;
 202       ctx->Const.MaxLights = 8;
 203       ctx->Const.MaxTextureCoordUnits = 2;
 204       ctx->Const.MaxTextureUnits = 2;
 205
 206       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 207       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 0;
 208       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 512;
 209       ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 512;
 210       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 211       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 32;
 212
 213       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits =
 214          ctx->Const.MaxCombinedTextureImageUnits;
 215       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 64;
 216       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 64;
 217       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 218          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 219       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 220
 221       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
 222       break;
 223    case 130:
 224    case 140:
 225       ctx->Const.MaxClipPlanes = 8;
 226       ctx->Const.MaxCombinedTextureImageUnits = 16;
 227       ctx->Const.MaxDrawBuffers = 8;
 228       ctx->Const.MinProgramTexelOffset = -8;
 229       ctx->Const.MaxProgramTexelOffset = 7;
 230       ctx->Const.MaxLights = 8;
 231       ctx->Const.MaxTextureCoordUnits = 8;
 232       ctx->Const.MaxTextureUnits = 2;
 233       ctx->Const.MaxUniformBufferBindings = 84;
 234       ctx->Const.MaxVertexStreams = 4;
 235       ctx->Const.MaxTransformFeedbackBuffers = 4;
 236
 237       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 238       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 239       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 240       ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
 241       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 242       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
 243
 244       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 245       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
 246       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 1024;
 247       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 248          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 249       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 250
 251       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents / 4;
 252       break;
 253    case 150:
 254    case 330:
 255    case 400:
 256    case 410:
 257    case 420:
 258    case 430:
 259    case 440:
 260    case 450:
 261    case 460:
 262       ctx->Const.MaxClipPlanes = 8;
 263       ctx->Const.MaxDrawBuffers = 8;
 264       ctx->Const.MinProgramTexelOffset = -8;
 265       ctx->Const.MaxProgramTexelOffset = 7;
 266       ctx->Const.MaxLights = 8;
 267       ctx->Const.MaxTextureCoordUnits = 8;
 268       ctx->Const.MaxTextureUnits = 2;
 269       ctx->Const.MaxUniformBufferBindings = 84;
 270       ctx->Const.MaxVertexStreams = 4;
 271       ctx->Const.MaxTransformFeedbackBuffers = 4;
 272
 273       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 274       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 275       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 276       ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
 277       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 278       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 64;
 279
 280       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits = 16;
 281       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxUniformComponents = 1024;
 282       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxCombinedUniformComponents = 1024;
 283       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxInputComponents =
 284          ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents;
 285       ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents = 128;
 286
 287       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 288       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 1024;
 289       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 1024;
 290       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents =
 291          ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxOutputComponents;
 292       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 293
 294       ctx->Const.MaxCombinedTextureImageUnits =
 295          ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits
 296          + ctx->Const.Program[MESA_SHADER_GEOMETRY].MaxTextureImageUnits
 297          + ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
 298
 299       ctx->Const.MaxGeometryOutputVertices = 256;
 300       ctx->Const.MaxGeometryTotalOutputComponents = 1024;
 301
 302       ctx->Const.MaxVarying = 60 / 4;
 303       break;
 304    case 300:
 305       ctx->Const.MaxClipPlanes = 8;
 306       ctx->Const.MaxCombinedTextureImageUnits = 32;
 307       ctx->Const.MaxDrawBuffers = 4;
 308       ctx->Const.MinProgramTexelOffset = -8;
 309       ctx->Const.MaxProgramTexelOffset = 7;
 310       ctx->Const.MaxLights = 0;
 311       ctx->Const.MaxTextureCoordUnits = 0;
 312       ctx->Const.MaxTextureUnits = 0;
 313       ctx->Const.MaxUniformBufferBindings = 84;
 314       ctx->Const.MaxVertexStreams = 4;
 315       ctx->Const.MaxTransformFeedbackBuffers = 4;
 316
 317       ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs = 16;
 318       ctx->Const.Program[MESA_SHADER_VERTEX].MaxTextureImageUnits = 16;
 319       ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents = 1024;
 320       ctx->Const.Program[MESA_SHADER_VERTEX].MaxCombinedUniformComponents = 1024;
 321       ctx->Const.Program[MESA_SHADER_VERTEX].MaxInputComponents = 0; /* not used */
 322       ctx->Const.Program[MESA_SHADER_VERTEX].MaxOutputComponents = 16 * 4;
 323
 324       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits = 16;
 325       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents = 224;
 326       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxCombinedUniformComponents = 224;
 327       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents = 15 * 4;
 328       ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxOutputComponents = 0; /* not used */
 329
 330       ctx->Const.MaxVarying = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxInputComponents / 4;
 331       break;
 332    }
 333
 334    ctx->Const.GenerateTemporaryNames = true;
 335    ctx->Const.MaxPatchVertices = 32;
 336
 337    /* GL_ARB_explicit_uniform_location, GL_MAX_UNIFORM_LOCATIONS */
 338    ctx->Const.MaxUserAssignableUniformLocations =
 339       4 * MESA_SHADER_STAGES * MAX_UNIFORMS;
 340
 341    ctx->Driver.NewProgram = new_program;
 342 }
 343
 344 /* Returned string will have 'ctx' as its ralloc owner. */
 345 static char *
 346 load_text_file(void *ctx, const char *file_name)
 347 {
 348    char *text = NULL;
 349    size_t size;
 350    size_t total_read = 0;
 351    FILE *fp = fopen(file_name, "rb");
 352
 353    if (!fp) {
 354       return NULL;
 355    }
 356
 357    fseek(fp, 0L, SEEK_END);
 358    size = ftell(fp);
 359    fseek(fp, 0L, SEEK_SET);
 360
 361    text = (char *) ralloc_size(ctx, size + 1);
 362    if (text != NULL) {
 363       do {
 364          size_t bytes = fread(text + total_read,
 365                1, size - total_read, fp);
 366          if (bytes < size - total_read) {
 367             free(text);
 368             text = NULL;
 369             goto error;
 370          }
 371
 372          if (bytes == 0) {
 373             break;
 374          }
 375
 376          total_read += bytes;
 377       } while (total_read < size);
 378
 379       text[total_read] = '\0';
 380       error:;
 381    }
 382
 383    fclose(fp);
 384
 385    return text;
 386 }
 387
 388 static void
 389 compile_shader(struct gl_context *ctx, struct gl_shader *shader)
 390 {
 391    struct _mesa_glsl_parse_state *state =
 392       new(shader) _mesa_glsl_parse_state(ctx, shader->Stage, shader);
 393
 394    _mesa_glsl_compile_shader(ctx, shader, options->dump_ast,
 395                              options->dump_hir, true);
 396
 397    /* Print out the resulting IR */
 398    if (!state->error && options->dump_lir) {
 399       _mesa_print_ir(stdout, shader->ir, state);
 400    }
 401
 402    return;
 403 }
 404
 405 extern "C" struct gl_shader_program *
 406 standalone_compile_shader(const struct standalone_options *_options,
 407       unsigned num_files, char* const* files)
 408 {
 409    int status = EXIT_SUCCESS;
 410    static struct gl_context local_ctx;
 411    struct gl_context *ctx = &local_ctx;
 412    bool glsl_es = false;
 413
 414    options = _options;
 415
 416    switch (options->glsl_version) {
 417    case 100:
 418    case 300:
 419       glsl_es = true;
 420       break;
 421    case 110:
 422    case 120:
 423    case 130:
 424    case 140:
 425    case 150:
 426    case 330:
 427    case 400:
 428    case 410:
 429    case 420:
 430    case 430:
 431    case 440:
 432    case 450:
 433    case 460:
 434       glsl_es = false;
 435       break;
 436    default:
 437       fprintf(stderr, "Unrecognized GLSL version `%d'\n", options->glsl_version);
 438       return NULL;
 439    }
 440
 441    if (glsl_es) {
 442       initialize_context(ctx, API_OPENGLES2);
 443    } else {
 444       initialize_context(ctx, options->glsl_version > 130 ? API_OPENGL_CORE : API_OPENGL_COMPAT);
 445    }
 446
 447    struct gl_shader_program *whole_program;
 448
 449    whole_program = rzalloc (NULL, struct gl_shader_program);
 450    assert(whole_program != NULL);
 451    whole_program->data = rzalloc(whole_program, struct gl_shader_program_data);
 452    assert(whole_program->data != NULL);
 453    whole_program->data->InfoLog = ralloc_strdup(whole_program->data, "");
 454
 455    /* Created just to avoid segmentation faults */
 456    whole_program->AttributeBindings = new string_to_uint_map;
 457    whole_program->FragDataBindings = new string_to_uint_map;
 458    whole_program->FragDataIndexBindings = new string_to_uint_map;
 459
 460    for (unsigned i = 0; i < num_files; i++) {
 461       whole_program->Shaders =
 462             reralloc(whole_program, whole_program->Shaders,
 463                   struct gl_shader *, whole_program->NumShaders + 1);
 464       assert(whole_program->Shaders != NULL);
 465
 466       struct gl_shader *shader = rzalloc(whole_program, gl_shader);
 467
 468       whole_program->Shaders[whole_program->NumShaders] = shader;
 469       whole_program->NumShaders++;
 470
 471       const unsigned len = strlen(files[i]);
 472       if (len < 6)
 473          goto fail;
 474
 475       const char *const ext = & files[i][len - 5];
 476       /* TODO add support to read a .shader_test */
 477       if (strncmp(".vert", ext, 5) == 0 || strncmp(".glsl", ext, 5) == 0)
 478          shader->Type = GL_VERTEX_SHADER;
 479       else if (strncmp(".tesc", ext, 5) == 0)
 480          shader->Type = GL_TESS_CONTROL_SHADER;
 481       else if (strncmp(".tese", ext, 5) == 0)
 482          shader->Type = GL_TESS_EVALUATION_SHADER;
 483       else if (strncmp(".geom", ext, 5) == 0)
 484          shader->Type = GL_GEOMETRY_SHADER;
 485       else if (strncmp(".frag", ext, 5) == 0)
 486          shader->Type = GL_FRAGMENT_SHADER;
 487       else if (strncmp(".comp", ext, 5) == 0)
 488          shader->Type = GL_COMPUTE_SHADER;
 489       else
 490          goto fail;
 491       shader->Stage = _mesa_shader_enum_to_shader_stage(shader->Type);
 492
 493       shader->Source = load_text_file(whole_program, files[i]);
 494       if (shader->Source == NULL) {
 495          printf("File \"%s\" does not exist.\n", files[i]);
 496          exit(EXIT_FAILURE);
 497       }
 498
 499       compile_shader(ctx, shader);
 500
 501       if (strlen(shader->InfoLog) > 0) {
 502          if (!options->just_log)
 503             printf("Info log for %s:\n", files[i]);
 504
 505          printf("%s", shader->InfoLog);
 506          if (!options->just_log)
 507             printf("\n");
 508       }
 509
 510       if (!shader->CompileStatus) {
 511          status = EXIT_FAILURE;
 512          break;
 513       }
 514    }
 515
 516    if (status == EXIT_SUCCESS) {
 517       _mesa_clear_shader_program_data(ctx, whole_program);
 518
 519       if (options->do_link)  {
 520          link_shaders(ctx, whole_program);
 521       } else {
 522          const gl_shader_stage stage = whole_program->Shaders[0]->Stage;
 523
 524          whole_program->data->LinkStatus = LINKING_SUCCESS;
 525          whole_program->_LinkedShaders[stage] =
 526             link_intrastage_shaders(whole_program /* mem_ctx */,
 527                                     ctx,
 528                                     whole_program,
 529                                     whole_program->Shaders,
 530                                     1,
 531                                     true);
 532
 533          /* Par-linking can fail, for example, if there are undefined external
 534           * references.
 535           */
 536          if (whole_program->_LinkedShaders[stage] != NULL) {
 537             assert(whole_program->data->LinkStatus);
 538
 539             struct gl_shader_compiler_options *const compiler_options =
 540                &ctx->Const.ShaderCompilerOptions[stage];
 541
 542             exec_list *const ir =
 543                whole_program->_LinkedShaders[stage]->ir;
 544
 545             bool progress;
 546             do {
 547                progress = do_function_inlining(ir);
 548
 549                progress = do_common_optimization(ir,
 550                                                  false,
 551                                                  false,
 552                                                  compiler_options,
 553                                                  true)
 554                   && progress;
 555             } while(progress);
 556          }
 557       }
 558
 559       status = (whole_program->data->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
 560
 561       if (strlen(whole_program->data->InfoLog) > 0) {
 562          printf("\n");
 563          if (!options->just_log)
 564             printf("Info log for linking:\n");
 565          printf("%s", whole_program->data->InfoLog);
 566          if (!options->just_log)
 567             printf("\n");
 568       }
 569
 570       for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
 571          struct gl_linked_shader *shader = whole_program->_LinkedShaders[i];
 572
 573          if (!shader)
 574             continue;
 575
 576          add_neg_to_sub_visitor v;
 577          visit_list_elements(&v, shader->ir);
 578
 579          dead_variable_visitor dv;
 580          visit_list_elements(&dv, shader->ir);
 581          dv.remove_dead_variables();
 582       }
 583
 584       if (options->dump_builder) {
 585          for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
 586             struct gl_linked_shader *shader = whole_program->_LinkedShaders[i];
 587
 588             if (!shader)
 589                continue;
 590
 591             _mesa_print_builder_for_ir(stdout, shader->ir);
 592          }
 593       }
 594    }
 595
 596    return whole_program;
 597
 598 fail:
 599    for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
 600       if (whole_program->_LinkedShaders[i])
 601          ralloc_free(whole_program->_LinkedShaders[i]->Program);
 602    }
 603
 604    ralloc_free(whole_program);
 605    return NULL;
 606 }
 607
 608 extern "C" void
 609 standalone_compiler_cleanup(struct gl_shader_program *whole_program)
 610 {
 611    for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
 612       if (whole_program->_LinkedShaders[i])
 613          ralloc_free(whole_program->_LinkedShaders[i]->Program);
 614    }
 615
 616    delete whole_program->AttributeBindings;
 617    delete whole_program->FragDataBindings;
 618    delete whole_program->FragDataIndexBindings;
 619
 620    ralloc_free(whole_program);
 621    _mesa_glsl_release_types();
 622    _mesa_glsl_release_builtin_functions();
 623 }