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Couriersud fixed bug #603
Using the following sequence
SDL_Init(..:)
SDL_CreateWindow(..., SDL_WINDOW_OPENGL)
SDL_DestroyWindow
SDL_CreateWindow(..., SDL_WINDOW_OPENGL)
SDL will crash in X11_GL_GetVisual. This is due to the fact that
during SDL_DestroyWindow X11_GL_Shutdown was called because the last window
has been closed.
On the next call to SDL_CreateWindow the library is still loaded and only the
memory is reinitialized. Function pointers such as gl_data->glXChooseVisual
will not be reinitialized.
Consequently, SDL will crash due to a NULL pointer access.
The attached patch corrects the behaviour.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 26 Aug 2008 02:47:26 +0000 |
| parents | e6cd882e3ac0 |
| children | 3e3724fb829e |
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These are test programs for the SDL library: checkkeys Watch the key events to check the keyboard graywin Display a gray gradient and center mouse on spacebar loopwave Audio test -- loop playing a WAV file testalpha Display an alpha faded icon -- paint with mouse testaudioinfo Lists audio device capabilities testbitmap Test displaying 1-bit bitmaps testblitspeed Tests performance of SDL's blitters and converters. testcdrom Sample audio CD control program testcursor Tests custom mouse cursor testdyngl Tests dynamically loading OpenGL library testerror Tests multi-threaded error handling testfile Tests RWops layer testgamma Tests video device gamma ramp testgl A very simple example of using OpenGL with SDL testgl2 Improved version of testgl testhread Hacked up test of multi-threading testiconv Tests international string conversion testjoystick List joysticks and watch joystick events testkeys List the available keyboard keys testloadso Tests the loadable library layer testlock Hacked up test of multi-threading and locking testmultiaudio Tests using several audio devices testoverlay Tests the software/hardware overlay functionality. testoverlay2 Tests the overlay flickering/scaling during playback. testpalette Tests palette color cycling testplatform Tests types, endianness and cpu capabilities testsem Tests SDL's semaphore implementation testsprite Example of fast sprite movement on the screen testsprite2 Improved version of testsprite testtimer Test the timer facilities testver Check the version and dynamic loading and endianness testvidinfo Show the pixel format of the display and perfom the benchmark testwin Display a BMP image at various depths testwm Test window manager -- title, icon, events testwm2 Improved version of testwm threadwin Test multi-threaded event handling torturethread Simple test for thread creation/destruction