1 files changed, 5 insertions, 1 deletions
diff --git a/progs/osdemos/ostest1.c b/progs/osdemos/ostest1.c
index 000b8c4a781..5a00fdb246e 100644
--- a/progs/osdemos/ostest1.c
+++ b/progs/osdemos/ostest1.c
@@ -399,7 +399,11 @@ test(GLenum type, GLint bits, const char *filename)
 
    /* sanity checks */
    glGetIntegerv(GL_RED_BITS, &cBits);
-   assert(cBits == bits);
+   if (cBits != bits) {
+      fprintf(stderr, "Unable to create %d-bit/channel renderbuffer.\n", bits);
+      fprintf(stderr, "May need to recompile Mesa with CHAN_BITS=16 or 32.\n");
+      return 0;
+   }
    glGetIntegerv(GL_GREEN_BITS, &cBits);
    assert(cBits == bits);
    glGetIntegerv(GL_BLUE_BITS, &cBits);