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Fix crash that may occur when handle_reshape in called before the window is fully created.

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Not sure if this affects any renderer but the tinydisplay renderer.
This commit is contained in:
rdb 2015-01-05 22:38:09 +01:00
parent 8a5f07f9c3
commit b19ff5b10e
3 changed files with 148 additions and 143 deletions
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6
panda/src/tinydisplay/tinyWinGraphicsWindow.cxx
View File

@ -251,8 +251,10 @@ open_window() {
void TinyWinGraphicsWindow::
handle_reshape() {
WinGraphicsWindow::handle_reshape();
ZB_resize(_frame_buffer, NULL, _properties.get_x_size(), _properties.get_y_size());
setup_bitmap_info();
if (_frame_buffer != NULL) {
ZB_resize(_frame_buffer, NULL, _properties.get_x_size(), _properties.get_y_size());
setup_bitmap_info();
}
}
////////////////////////////////////////////////////////////////////

2
panda/src/tinydisplay/zbuffer.cxx
View File

@ -107,6 +107,8 @@ void
ZB_resize(ZBuffer * zb, void *frame_buffer, int xsize, int ysize) {
int size;
nassertv(zb != NULL);
/* xsize must be a multiple of 4 */
xsize = (xsize + 3) & ~3;

7
panda/src/windisplay/winGraphicsWindow.cxx
View File

@ -26,8 +26,6 @@
#include <tchar.h>
TypeHandle WinGraphicsWindow::_type_handle;
TypeHandle WinGraphicsWindow::WinWindowHandle::_type_handle;
@ -1489,7 +1487,10 @@ window_proc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) {
<< "WM_SIZE: " << hwnd << ", " << wparam << "\n";
}
handle_reshape();
// Resist calling handle_reshape before the window has opened.
if (_hWnd == NULL) {
handle_reshape();
}
break;
case WM_EXITSIZEMOVE: