1 /* Copyright © 2013, Intel Corporation
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 typedef struct options {
35 char *shading_language_version;
37 char *extensions_whitelist;
38 char *extensions_blacklist;
42 export_options (options_t *options)
45 glaze_set_first_gl_call_callback ("glenv_query");
49 setenv ("GLENV_GL_VENDOR", options->vendor, 1);
51 unsetenv ("GLENV_GL_VENDOR");
53 if (options->renderer)
54 setenv ("GLENV_GL_RENDERER", options->renderer, 1);
56 unsetenv ("GLENV_GL_RENDERER");
59 setenv ("GLENV_GL_VERSION", options->version, 1);
61 unsetenv ("GLENV_GL_VERSION");
63 if (options->shading_language_version)
64 setenv ("GLENV_GL_SHADING_LANGUAGE_VERSION",
65 options->shading_language_version, 1);
67 unsetenv ("GLENV_GL_SHADING_LANGUAGE_VERSION");
69 if (options->extensions)
70 setenv ("GLENV_EXTENSIONS", options->extensions, 1);
72 unsetenv ("GLENV_EXTENSIONS");
74 if (options->extensions_whitelist)
75 setenv ("GLENV_EXTENSIONS_WHITELIST", options->extensions_whitelist, 1);
77 unsetenv ("GLENV_EXTENSIONS_WHITELIST");
79 if (options->extensions_blacklist)
80 setenv ("GLENV_EXTENSIONS_BLACKLIST", options->extensions_blacklist, 1);
82 unsetenv ("GLENV_EXTENSIONS_BLACKLIST");
88 printf ("Usage: glenv [OPTIONS...] <program> [program args...]\n"
90 "Execute <program> with alternate OpenGL environment.\n"
93 " -h, --help Show this help message.\n"
94 " -q, --query Query and report current environment\n"
95 " then terminate program.\n"
96 " --vendor=STR Set GL_VENDOR to STR.\n"
97 " --renderer=STR Set GL_RENDERER to STR.\n"
98 " --version=STR Set GL_VERSION to STR.\n"
99 " --shading-language-version=STR Set GL_SHADING_LANGUAGE_VERSION to STR.\n"
100 " --extensions=STR Set GL_EXTENSIONS to STR.\n"
101 " --extensions-whitelist=STR Remove from GL_EXTENSIONS all names\n"
102 " not appearing in STR (space-separated).\n"
103 " --extensions-blacklist=STR Remove from GL_EXTENSIONS any names\n"
104 " appearing in STR (space-separated).\n");
108 VENDOR_OPT = CHAR_MAX + 1,
111 SHADING_LANGUAGE_VERSION_OPT,
113 EXTENSIONS_WHITELIST_OPT,
114 EXTENSIONS_BLACKLIST_OPT
118 main (int argc, char *argv[])
121 options_t options = {
126 .shading_language_version = NULL,
128 .extensions_whitelist = NULL,
129 .extensions_blacklist = NULL
132 const char *short_options="hq";
133 const struct option long_options[] = {
134 {"help", no_argument, 0, 'h'},
135 {"query", no_argument, 0, 'q'},
136 {"vendor", required_argument, 0, VENDOR_OPT},
137 {"renderer", required_argument, 0, RENDERER_OPT},
138 {"version", required_argument, 0, VERSION_OPT},
139 {"shading-language-version", required_argument, 0, SHADING_LANGUAGE_VERSION_OPT},
140 {"extensions", required_argument, 0, EXTENSIONS_OPT},
141 {"extensions-whitelist", required_argument, 0, EXTENSIONS_WHITELIST_OPT},
142 {"extensions-blacklist", required_argument, 0, EXTENSIONS_BLACKLIST_OPT},
148 opt = getopt_long (argc, argv, short_options, long_options, NULL);
160 options.query = true;
163 options.vendor = optarg;
166 options.renderer = optarg;
169 options.version = optarg;
171 case SHADING_LANGUAGE_VERSION_OPT:
172 options.shading_language_version = optarg;
175 options.extensions = optarg;
177 case EXTENSIONS_WHITELIST_OPT:
178 options.extensions_whitelist = optarg;
180 case EXTENSIONS_BLACKLIST_OPT:
181 options.extensions_blacklist = optarg;
184 fprintf (stderr, "Internal error: "
185 "unexpected getopt value: %d\n", opt);
190 if (optind >= argc) {
191 fprintf (stderr, "Error: No program name provided, "
192 "see (glenv --help)\n");
196 export_options (&options);
198 glaze_execute (argc - optind, &argv[optind], "libglenv.so");
200 /* If glaze_execute returns then something went wrong. */