diff options
| -rw-r--r-- | src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java b/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java index 0b66c51a7..a8308cf13 100644 --- a/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java +++ b/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java @@ -92,8 +92,25 @@ public class X11OnscreenGLDrawable extends X11GLDrawable { public void swapBuffers() throws GLException { lockAWT(); - GLX.glXSwapBuffers(display, drawable); + try { + boolean didLock = false; + + if (drawable == 0) { + if (lockSurface() == LOCK_SURFACE_NOT_READY) { + return; + } + + didLock = true; + } + + GLX.glXSwapBuffers(display, drawable); + + if (didLock) { + unlockSurface(); + } + } finally { unlockAWT(); + } } public int lockSurface() throws GLException { |