mirror of
https://github.com/Relintai/sdl2_frt.git
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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
154 lines
3.8 KiB
C++
154 lines
3.8 KiB
C++
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_DRIVER_WINRT
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/*
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* Windows includes:
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*/
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#include <Windows.h>
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using namespace Windows::UI::Core;
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using Windows::UI::Core::CoreCursor;
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/*
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* SDL includes:
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*/
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#include "SDL_winrtevents_c.h"
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#include "../../core/winrt/SDL_winrtapp_common.h"
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#include "../../core/winrt/SDL_winrtapp_direct3d.h"
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#include "../../core/winrt/SDL_winrtapp_xaml.h"
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#include "SDL_assert.h"
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#include "SDL_system.h"
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extern "C" {
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#include "../SDL_sysvideo.h"
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#include "../../events/SDL_events_c.h"
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}
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/* Forward declarations */
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static void WINRT_YieldXAMLThread();
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/* Global event management */
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void
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WINRT_PumpEvents(_THIS)
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{
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if (SDL_WinRTGlobalApp) {
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SDL_WinRTGlobalApp->PumpEvents();
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} else if (WINRT_XAMLWasEnabled) {
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WINRT_YieldXAMLThread();
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}
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}
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/* XAML Thread management */
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enum SDL_XAMLAppThreadState
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{
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ThreadState_NotLaunched = 0,
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ThreadState_Running,
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ThreadState_Yielding
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};
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static SDL_XAMLAppThreadState _threadState = ThreadState_NotLaunched;
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static SDL_Thread * _XAMLThread = nullptr;
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static SDL_mutex * _mutex = nullptr;
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static SDL_cond * _cond = nullptr;
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static void
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WINRT_YieldXAMLThread()
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{
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SDL_LockMutex(_mutex);
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SDL_assert(_threadState == ThreadState_Running);
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_threadState = ThreadState_Yielding;
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SDL_UnlockMutex(_mutex);
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SDL_CondSignal(_cond);
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SDL_LockMutex(_mutex);
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while (_threadState != ThreadState_Running) {
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SDL_CondWait(_cond, _mutex);
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}
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SDL_UnlockMutex(_mutex);
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}
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static int
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WINRT_XAMLThreadMain(void * userdata)
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{
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// TODO, WinRT: pass the C-style main() a reasonably realistic
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// representation of command line arguments.
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int argc = 0;
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char **argv = NULL;
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return WINRT_SDLAppEntryPoint(argc, argv);
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}
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void
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WINRT_CycleXAMLThread()
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{
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switch (_threadState) {
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case ThreadState_NotLaunched:
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{
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_cond = SDL_CreateCond();
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_mutex = SDL_CreateMutex();
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_threadState = ThreadState_Running;
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_XAMLThread = SDL_CreateThread(WINRT_XAMLThreadMain, "SDL/XAML App Thread", nullptr);
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SDL_LockMutex(_mutex);
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while (_threadState != ThreadState_Yielding) {
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SDL_CondWait(_cond, _mutex);
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}
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SDL_UnlockMutex(_mutex);
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break;
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}
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case ThreadState_Running:
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{
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SDL_assert(false);
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break;
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}
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case ThreadState_Yielding:
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{
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SDL_LockMutex(_mutex);
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SDL_assert(_threadState == ThreadState_Yielding);
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_threadState = ThreadState_Running;
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SDL_UnlockMutex(_mutex);
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SDL_CondSignal(_cond);
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SDL_LockMutex(_mutex);
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while (_threadState != ThreadState_Yielding) {
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SDL_CondWait(_cond, _mutex);
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}
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SDL_UnlockMutex(_mutex);
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}
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}
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}
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#endif /* SDL_VIDEO_DRIVER_WINRT */
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/* vi: set ts=4 sw=4 expandtab: */
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