glFlush() might be necessary

2004-02-20 02:00:44 +00:00 · 2004-02-20 02:00:44 +00:00 · b0de5200b0
parent d1b921ee1a
commit b0de5200b0
1 changed files with 7 additions and 0 deletions
--- a/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
+++ b/panda/src/glstuff/glGraphicsStateGuardian_src.cxx
@ -616,6 +616,13 @@ begin_frame() {
 void CLP(GraphicsStateGuardian)::
 end_frame() {
  GraphicsStateGuardian::end_frame();
+
+  // Calling glFlush() at the end of the frame is particularly
+  // necessary if this is a single-buffered visual, so that the frame
+  // will be finished drawing before we return to the application.
+  // It's not clear what effect this has on our total frame time.
+  GLP(Flush)();
+
  report_my_gl_errors();
 }