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 setenv ("GLENV_QUERY", "1", 1);
47 unsetenv ("GLENV_QUERY");
50 setenv ("GLENV_GL_VENDOR", options->vendor, 1);
52 unsetenv ("GLENV_GL_VENDOR");
54 if (options->renderer)
55 setenv ("GLENV_GL_RENDERER", options->renderer, 1);
57 unsetenv ("GLENV_GL_RENDERER");
60 setenv ("GLENV_GL_VERSION", options->version, 1);
62 unsetenv ("GLENV_GL_VERSION");
64 if (options->shading_language_version)
65 setenv ("GLENV_GL_SHADING_LANGUAGE_VERSION",
66 options->shading_language_version, 1);
68 unsetenv ("GLENV_GL_SHADING_LANGUAGE_VERSION");
70 if (options->extensions)
71 setenv ("GLENV_GL_EXTENSIONS", options->extensions, 1);
73 unsetenv ("GLENV_GL_EXTENSIONS");
75 if (options->extensions_whitelist)
76 setenv ("GLENV_GL_EXTENSIONS_WHITELIST", options->extensions_whitelist, 1);
78 unsetenv ("GLENV_GL_EXTENSIONS_WHITELIST");
80 if (options->extensions_blacklist)
81 setenv ("GLENV_GL_EXTENSIONS_BLACKLIST", options->extensions_blacklist, 1);
83 unsetenv ("GLENV_GL_EXTENSIONS_BLACKLIST");
89 printf ("Usage: glenv [OPTIONS...] <program> [program args...]\n"
91 "Execute <program> with alternate OpenGL environment.\n"
94 " -h, --help Show this help message.\n"
95 " -q, --query Query and report current environment\n"
96 " then terminate program.\n"
97 " --vendor=STR Set GL_VENDOR to STR.\n"
98 " --renderer=STR Set GL_RENDERER to STR.\n"
99 " --version=STR Set GL_VERSION to STR.\n"
100 " --shading-language-version=STR Set GL_SHADING_LANGUAGE_VERSION to STR.\n"
101 " --extensions=STR Set GL_EXTENSIONS to STR.\n"
102 " --extensions-whitelist=STR Remove from GL_EXTENSIONS all names\n"
103 " not appearing in STR (space-separated).\n"
104 " --extensions-blacklist=STR Remove from GL_EXTENSIONS any names\n"
105 " appearing in STR (space-separated).\n");
109 VENDOR_OPT = CHAR_MAX + 1,
112 SHADING_LANGUAGE_VERSION_OPT,
114 EXTENSIONS_WHITELIST_OPT,
115 EXTENSIONS_BLACKLIST_OPT
119 invalid_combination (const char *second, const char *first)
121 fprintf (stderr, "Error: Option %s cannot be specified after %s\n",
127 main (int argc, char *argv[])
130 options_t options = {
135 .shading_language_version = NULL,
137 .extensions_whitelist = NULL,
138 .extensions_blacklist = NULL
141 const char *short_options="hq";
142 const struct option long_options[] = {
143 {"help", no_argument, 0, 'h'},
144 {"query", no_argument, 0, 'q'},
145 {"vendor", required_argument, 0, VENDOR_OPT},
146 {"renderer", required_argument, 0, RENDERER_OPT},
147 {"version", required_argument, 0, VERSION_OPT},
148 {"shading-language-version", required_argument, 0, SHADING_LANGUAGE_VERSION_OPT},
149 {"extensions", required_argument, 0, EXTENSIONS_OPT},
150 {"extensions-whitelist", required_argument, 0, EXTENSIONS_WHITELIST_OPT},
151 {"extensions-blacklist", required_argument, 0, EXTENSIONS_BLACKLIST_OPT},
157 opt = getopt_long (argc, argv, short_options, long_options, NULL);
169 options.query = true;
172 options.vendor = optarg;
175 options.renderer = optarg;
178 options.version = optarg;
180 case SHADING_LANGUAGE_VERSION_OPT:
181 options.shading_language_version = optarg;
184 if (options.extensions_whitelist)
185 invalid_combination ("--extensions", "--extensions-whitelist");
186 if (options.extensions_blacklist)
187 invalid_combination ("--extensions", "--extensions-blacklist");
188 options.extensions = optarg;
190 case EXTENSIONS_WHITELIST_OPT:
191 if (options.extensions)
192 invalid_combination ("--extensions-whitelist", "--extensions");
193 if (options.extensions_blacklist)
194 invalid_combination ("--extensions-whitelist", "--extensions-blacklist");
195 options.extensions_whitelist = optarg;
197 case EXTENSIONS_BLACKLIST_OPT:
198 if (options.extensions)
199 invalid_combination ("--extensions-blacklist", "--extensions");
200 if (options.extensions_whitelist)
201 invalid_combination ("--extensions-blacklist", "--extensions-whitelist");
202 options.extensions_blacklist = optarg;
205 fprintf (stderr, "Internal error: "
206 "unexpected getopt value: %d\n", opt);
211 if (optind >= argc) {
212 fprintf (stderr, "Error: No program name provided, "
213 "see (glenv --help)\n");
217 export_options (&options);
219 glaze_set_first_gl_call_callback ("glenv_first_gl_call");
221 glaze_execute (argc - optind, &argv[optind], "libglenv.so");
223 /* If glaze_execute returns then something went wrong. */