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  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 <stdlib.h>
  24. #include <stdio.h>
  25. #include <getopt.h>
  26.  
  27. #include <sys/types.h>
  28. #include <sys/stat.h>
  29. #include <fcntl.h>
  30. #include <unistd.h>
  31.  
  32. #include "ast.h"
  33. #include "glsl_parser_extras.h"
  34. #include "glsl_parser.h"
  35. #include "ir_optimization.h"
  36. #include "ir_print_visitor.h"
  37. #include "program.h"
  38. #include "loop_analysis.h"
  39.  
  40. extern "C" struct gl_shader *
  41. _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type);
  42.  
  43. extern "C" void
  44. _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  45.                        struct gl_shader *sh);
  46.  
  47. /* Copied from shader_api.c for the stand-alone compiler.
  48.  */
  49. void
  50. _mesa_reference_shader(struct gl_context *ctx, struct gl_shader **ptr,
  51.                        struct gl_shader *sh)
  52. {
  53.    *ptr = sh;
  54. }
  55.  
  56. struct gl_shader *
  57. _mesa_new_shader(struct gl_context *ctx, GLuint name, GLenum type)
  58. {
  59.    struct gl_shader *shader;
  60.  
  61.    (void) ctx;
  62.  
  63.    assert(type == GL_FRAGMENT_SHADER || type == GL_VERTEX_SHADER);
  64.    shader = rzalloc(NULL, struct gl_shader);
  65.    if (shader) {
  66.       shader->Type = type;
  67.       shader->Name = name;
  68.       shader->RefCount = 1;
  69.    }
  70.    return shader;
  71. }
  72.  
  73. static void
  74. initialize_context(struct gl_context *ctx, gl_api api)
  75. {
  76.    memset(ctx, 0, sizeof(*ctx));
  77.  
  78.    ctx->API = api;
  79.  
  80.    ctx->Extensions.ARB_ES2_compatibility = GL_TRUE;
  81.    ctx->Extensions.ARB_draw_buffers = GL_TRUE;
  82.    ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
  83.    ctx->Extensions.EXT_texture_array = GL_TRUE;
  84.    ctx->Extensions.NV_texture_rectangle = GL_TRUE;
  85.  
  86.    /* GLSL 1.30 isn't fully supported, but we need to advertise 1.30 so that
  87.     * the built-in functions for 1.30 can be built.
  88.     */
  89.    ctx->Const.GLSLVersion = 130;
  90.  
  91.    /* 1.10 minimums. */
  92.    ctx->Const.MaxLights = 8;
  93.    ctx->Const.MaxClipPlanes = 8;
  94.    ctx->Const.MaxTextureUnits = 2;
  95.  
  96.    /* More than the 1.10 minimum to appease parser tests taken from
  97.     * apps that (hopefully) already checked the number of coords.
  98.     */
  99.    ctx->Const.MaxTextureCoordUnits = 4;
  100.  
  101.    ctx->Const.VertexProgram.MaxAttribs = 16;
  102.    ctx->Const.VertexProgram.MaxUniformComponents = 512;
  103.    ctx->Const.MaxVarying = 8;
  104.    ctx->Const.MaxVertexTextureImageUnits = 0;
  105.    ctx->Const.MaxCombinedTextureImageUnits = 2;
  106.    ctx->Const.MaxTextureImageUnits = 2;
  107.    ctx->Const.FragmentProgram.MaxUniformComponents = 64;
  108.  
  109.    ctx->Const.MaxDrawBuffers = 2;
  110.  
  111.    ctx->Driver.NewShader = _mesa_new_shader;
  112. }
  113.  
  114. /* Returned string will have 'ctx' as its ralloc owner. */
  115. static char *
  116. load_text_file(void *ctx, const char *file_name)
  117. {
  118.         char *text = NULL;
  119.         struct stat st;
  120.         ssize_t total_read = 0;
  121.         int fd = open(file_name, O_RDONLY);
  122.  
  123.         if (fd < 0) {
  124.                 return NULL;
  125.         }
  126.  
  127.         if (fstat(fd, & st) == 0) {
  128.            text = (char *) ralloc_size(ctx, st.st_size + 1);
  129.                 if (text != NULL) {
  130.                         do {
  131.                                 ssize_t bytes = read(fd, text + total_read,
  132.                                                      st.st_size - total_read);
  133.                                 if (bytes < 0) {
  134.                                         free(text);
  135.                                         text = NULL;
  136.                                         break;
  137.                                 }
  138.  
  139.                                 if (bytes == 0) {
  140.                                         break;
  141.                                 }
  142.  
  143.                                 total_read += bytes;
  144.                         } while (total_read < st.st_size);
  145.  
  146.                         text[total_read] = '\0';
  147.                 }
  148.         }
  149.  
  150.         close(fd);
  151.  
  152.         return text;
  153. }
  154.  
  155. int glsl_es = 0;
  156. int dump_ast = 0;
  157. int dump_hir = 0;
  158. int dump_lir = 0;
  159. int do_link = 0;
  160.  
  161. const struct option compiler_opts[] = {
  162.    { "glsl-es",  0, &glsl_es,  1 },
  163.    { "dump-ast", 0, &dump_ast, 1 },
  164.    { "dump-hir", 0, &dump_hir, 1 },
  165.    { "dump-lir", 0, &dump_lir, 1 },
  166.    { "link",     0, &do_link,  1 },
  167.    { NULL, 0, NULL, 0 }
  168. };
  169.  
  170. /**
  171.  * \brief Print proper usage and exit with failure.
  172.  */
  173. void
  174. usage_fail(const char *name)
  175. {
  176.  
  177.    const char *header =
  178.       "usage: %s [options] <file.vert | file.geom | file.frag>\n"
  179.       "\n"
  180.       "Possible options are:\n";
  181.    printf(header, name, name);
  182.    for (const struct option *o = compiler_opts; o->name != 0; ++o) {
  183.       printf("    --%s\n", o->name);
  184.    }
  185.    exit(EXIT_FAILURE);
  186. }
  187.  
  188.  
  189. void
  190. compile_shader(struct gl_context *ctx, struct gl_shader *shader)
  191. {
  192.    struct _mesa_glsl_parse_state *state =
  193.       new(shader) _mesa_glsl_parse_state(ctx, shader->Type, shader);
  194.  
  195.    const char *source = shader->Source;
  196.    state->error = preprocess(state, &source, &state->info_log,
  197.                              state->extensions, ctx->API);
  198.  
  199.    if (!state->error) {
  200.       _mesa_glsl_lexer_ctor(state, source);
  201.       _mesa_glsl_parse(state);
  202.       _mesa_glsl_lexer_dtor(state);
  203.    }
  204.  
  205.    if (dump_ast) {
  206.       foreach_list_const(n, &state->translation_unit) {
  207.          ast_node *ast = exec_node_data(ast_node, n, link);
  208.          ast->print();
  209.       }
  210.       printf("\n\n");
  211.    }
  212.  
  213.    shader->ir = new(shader) exec_list;
  214.    if (!state->error && !state->translation_unit.is_empty())
  215.       _mesa_ast_to_hir(shader->ir, state);
  216.  
  217.    /* Print out the unoptimized IR. */
  218.    if (!state->error && dump_hir) {
  219.       validate_ir_tree(shader->ir);
  220.       _mesa_print_ir(shader->ir, state);
  221.    }
  222.  
  223.    /* Optimization passes */
  224.    if (!state->error && !shader->ir->is_empty()) {
  225.       bool progress;
  226.       do {
  227.          progress = do_common_optimization(shader->ir, false, 32);
  228.       } while (progress);
  229.  
  230.       validate_ir_tree(shader->ir);
  231.    }
  232.  
  233.  
  234.    /* Print out the resulting IR */
  235.    if (!state->error && dump_lir) {
  236.       _mesa_print_ir(shader->ir, state);
  237.    }
  238.  
  239.    shader->symbols = state->symbols;
  240.    shader->CompileStatus = !state->error;
  241.    shader->Version = state->language_version;
  242.    memcpy(shader->builtins_to_link, state->builtins_to_link,
  243.           sizeof(shader->builtins_to_link[0]) * state->num_builtins_to_link);
  244.    shader->num_builtins_to_link = state->num_builtins_to_link;
  245.  
  246.    if (shader->InfoLog)
  247.       ralloc_free(shader->InfoLog);
  248.  
  249.    shader->InfoLog = state->info_log;
  250.  
  251.    /* Retain any live IR, but trash the rest. */
  252.    reparent_ir(shader->ir, shader);
  253.  
  254.    ralloc_free(state);
  255.  
  256.    return;
  257. }
  258.  
  259. int
  260. main(int argc, char **argv)
  261. {
  262.    int status = EXIT_SUCCESS;
  263.    struct gl_context local_ctx;
  264.    struct gl_context *ctx = &local_ctx;
  265.  
  266.    int c;
  267.    int idx = 0;
  268.    while ((c = getopt_long(argc, argv, "", compiler_opts, &idx)) != -1)
  269.       /* empty */ ;
  270.  
  271.  
  272.    if (argc <= optind)
  273.       usage_fail(argv[0]);
  274.  
  275.    initialize_context(ctx, (glsl_es) ? API_OPENGLES2 : API_OPENGL);
  276.  
  277.    struct gl_shader_program *whole_program;
  278.  
  279.    whole_program = rzalloc (NULL, struct gl_shader_program);
  280.    assert(whole_program != NULL);
  281.  
  282.    for (/* empty */; argc > optind; optind++) {
  283.       whole_program->Shaders =
  284.          reralloc(whole_program, whole_program->Shaders,
  285.                   struct gl_shader *, whole_program->NumShaders + 1);
  286.       assert(whole_program->Shaders != NULL);
  287.  
  288.       struct gl_shader *shader = rzalloc(whole_program, gl_shader);
  289.  
  290.       whole_program->Shaders[whole_program->NumShaders] = shader;
  291.       whole_program->NumShaders++;
  292.  
  293.       const unsigned len = strlen(argv[optind]);
  294.       if (len < 6)
  295.          usage_fail(argv[0]);
  296.  
  297.       const char *const ext = & argv[optind][len - 5];
  298.       if (strncmp(".vert", ext, 5) == 0)
  299.          shader->Type = GL_VERTEX_SHADER;
  300.       else if (strncmp(".geom", ext, 5) == 0)
  301.          shader->Type = GL_GEOMETRY_SHADER;
  302.       else if (strncmp(".frag", ext, 5) == 0)
  303.          shader->Type = GL_FRAGMENT_SHADER;
  304.       else
  305.          usage_fail(argv[0]);
  306.  
  307.       shader->Source = load_text_file(whole_program, argv[optind]);
  308.       if (shader->Source == NULL) {
  309.          printf("File \"%s\" does not exist.\n", argv[optind]);
  310.          exit(EXIT_FAILURE);
  311.       }
  312.  
  313.       compile_shader(ctx, shader);
  314.  
  315.       if (!shader->CompileStatus) {
  316.          printf("Info log for %s:\n%s\n", argv[optind], shader->InfoLog);
  317.          status = EXIT_FAILURE;
  318.          break;
  319.       }
  320.    }
  321.  
  322.    if ((status == EXIT_SUCCESS) && do_link)  {
  323.       link_shaders(ctx, whole_program);
  324.       status = (whole_program->LinkStatus) ? EXIT_SUCCESS : EXIT_FAILURE;
  325.  
  326.       if (strlen(whole_program->InfoLog) > 0)
  327.          printf("Info log for linking:\n%s\n", whole_program->InfoLog);
  328.    }
  329.  
  330.    for (unsigned i = 0; i < MESA_SHADER_TYPES; i++)
  331.       ralloc_free(whole_program->_LinkedShaders[i]);
  332.  
  333.    ralloc_free(whole_program);
  334.    _mesa_glsl_release_types();
  335.    _mesa_glsl_release_functions();
  336.  
  337.    return status;
  338. }
  339.