Tests that check frontbuffer contents after drawing may fail because
the X server touch the front contents between drawing and checking. In those
cases, there's typically a pending expose event. So check for that
situation and optionally rerun the test.
Signed-off-by: Thomas Hellstrom <thellst...@vmware.com>
---
tests/util/piglit-glx-util.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/tests/util/piglit-glx-util.c b/tests/util/piglit-glx-util.c
index 95e33ae..85f7eef 100644
--- a/tests/util/piglit-glx-util.c
+++ b/tests/util/piglit-glx-util.c
@@ -212,6 +212,20 @@ piglit_glx_event_loop(Display *dpy, enum piglit_result
(*draw)(Display *dpy))
enum piglit_result result = draw(dpy);
if (piglit_automatic) {
+ /*
+ * Rerun if we have failed and have a
+ * pending expose event, which might be an
+ * indication of invalid front buffer
+ * contents.
+ */
+ if (result == PIGLIT_FAIL &&
+ XCheckTypedEvent(dpy, Expose, &event)) {
+ fprintf(stderr,
+ "Pending expose event- "
+ "rerunning.\n");
+ XPutBackEvent(dpy, &event);
+ continue;
+ }
XCloseDisplay(dpy);
piglit_report_result(result);
break;
--
2.7.4
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