diff options
| -rw-r--r-- | progs/trivial/tri-query.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/progs/trivial/tri-query.c b/progs/trivial/tri-query.c index 85e39df2dfa..94956a86f33 100644 --- a/progs/trivial/tri-query.c +++ b/progs/trivial/tri-query.c @@ -39,6 +39,11 @@ GLenum doubleBuffer; static void Init(void) { + if (!glutExtensionSupported("GL_ARB_occlusion_query")) { + fprintf(stderr, "Sorry, this program requires GL_ARB_occlusion_query\n"); + exit(1); + } + fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER)); fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION)); fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR)); |