Demos (master): rubberband: add a glFlush() call to display the front-buffer drawing

[Brian Paul]

Module: Demos
Branch: master
Commit: 4a11ba55bc80129e36f76c77933c73212e4bf014
URL:    http://cgit.freedesktop.org/mesa/demos/commit/?id=4a11ba55bc80129e36f76c77933c73212e4bf014

Author: Brian Paul <brianp at vmware.com>
Date:   Fri Aug 31 13:07:08 2012 -0600

rubberband: add a glFlush() call to display the front-buffer drawing

---

 src/tests/rubberband.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/src/tests/rubberband.c b/src/tests/rubberband.c
index 43772e7..3825826 100644
--- a/src/tests/rubberband.c
+++ b/src/tests/rubberband.c
@@ -67,6 +67,9 @@ DrawRect(const struct rect *r)
    glDisable(GL_COLOR_LOGIC_OP);
    glDisable(GL_BLEND);
 
+   /* Need this to ensure the front buffer drawing is actually displayed */
+   glFlush();
+
    glDrawBuffer(GL_BACK);
 }