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fix crash on shutdown

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This commit is contained in:
David Rose 2009-03-06 22:17:57 +00:00
parent 30671d09a8
commit e52bf51058
1 changed files with 8 additions and 0 deletions
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8
panda/src/tinydisplay/tinyXGraphicsWindow.cxx
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@ -150,6 +150,10 @@ bool TinyXGraphicsWindow::
begin_frame(FrameMode mode, Thread *current_thread) { begin_frame(FrameMode mode, Thread *current_thread) {
PStatTimer timer(_make_current_pcollector, current_thread); PStatTimer timer(_make_current_pcollector, current_thread);
if (_xwindow == (Window)NULL) {
return false;
}
begin_frame_spam(mode); begin_frame_spam(mode);
if (_gsg == (GraphicsStateGuardian *)NULL) { if (_gsg == (GraphicsStateGuardian *)NULL) {
return false; return false;
@ -218,6 +222,10 @@ end_frame(FrameMode mode, Thread *current_thread) {
//////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////
void TinyXGraphicsWindow:: void TinyXGraphicsWindow::
begin_flip() { begin_flip() {
if (_xwindow == (Window)NULL) {
return;
}
if (_reduced_frame_buffer != (ZBuffer *)NULL) { if (_reduced_frame_buffer != (ZBuffer *)NULL) {
// Zoom the reduced buffer onto the full buffer. // Zoom the reduced buffer onto the full buffer.
ZB_zoomFrameBuffer(_full_frame_buffer, 0, 0, ZB_zoomFrameBuffer(_full_frame_buffer, 0, 0,