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 invalid_combination (const char *second, const char *first)
120 fprintf (stderr, "Error: Option %s cannot be specified after %s\n",
126 main (int argc, char *argv[])
129 options_t options = {
134 .shading_language_version = NULL,
136 .extensions_whitelist = NULL,
137 .extensions_blacklist = NULL
140 const char *short_options="hq";
141 const struct option long_options[] = {
142 {"help", no_argument, 0, 'h'},
143 {"query", no_argument, 0, 'q'},
144 {"vendor", required_argument, 0, VENDOR_OPT},
145 {"renderer", required_argument, 0, RENDERER_OPT},
146 {"version", required_argument, 0, VERSION_OPT},
147 {"shading-language-version", required_argument, 0, SHADING_LANGUAGE_VERSION_OPT},
148 {"extensions", required_argument, 0, EXTENSIONS_OPT},
149 {"extensions-whitelist", required_argument, 0, EXTENSIONS_WHITELIST_OPT},
150 {"extensions-blacklist", required_argument, 0, EXTENSIONS_BLACKLIST_OPT},
156 opt = getopt_long (argc, argv, short_options, long_options, NULL);
168 options.query = true;
171 options.vendor = optarg;
174 options.renderer = optarg;
177 options.version = optarg;
179 case SHADING_LANGUAGE_VERSION_OPT:
180 options.shading_language_version = optarg;
183 if (options.extensions_whitelist)
184 invalid_combination ("--extensions", "--extensions-whitelist");
185 if (options.extensions_blacklist)
186 invalid_combination ("--extensions", "--extensions-blacklist");
187 options.extensions = optarg;
189 case EXTENSIONS_WHITELIST_OPT:
190 if (options.extensions)
191 invalid_combination ("--extensions-whitelist", "--extensions");
192 if (options.extensions_blacklist)
193 invalid_combination ("--extensions-whitelist", "--extensions-blacklist");
194 options.extensions_whitelist = optarg;
196 case EXTENSIONS_BLACKLIST_OPT:
197 if (options.extensions)
198 invalid_combination ("--extensions-blacklist", "--extensions");
199 if (options.extensions_whitelist)
200 invalid_combination ("--extensions-blacklist", "--extensions-whitelist");
201 options.extensions_blacklist = optarg;
204 fprintf (stderr, "Internal error: "
205 "unexpected getopt value: %d\n", opt);
210 if (optind >= argc) {
211 fprintf (stderr, "Error: No program name provided, "
212 "see (glenv --help)\n");
216 export_options (&options);
218 glaze_execute (argc - optind, &argv[optind], "libglenv.so");
220 /* If glaze_execute returns then something went wrong. */