void PlatformDisplay::initializeEGLDisplay()
{
m_eglDisplayInitialized = true;
if (m_eglDisplay == EGL_NO_DISPLAY) {
// EGL is optionally soft linked on Windows.
#if PLATFORM(WIN)
auto eglGetDisplay = eglGetDisplayPtr();
if (!eglGetDisplay)
return;
#endif
m_eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (m_eglDisplay == EGL_NO_DISPLAY)
return;
}
EGLint majorVersion, minorVersion;
if (eglInitialize(m_eglDisplay, &majorVersion, &minorVersion) == EGL_FALSE) {
LOG_ERROR("EGLDisplay Initialization failed.");
terminateEGLDisplay();
return;
}
m_eglMajorVersion = majorVersion;
m_eglMinorVersion = minorVersion;
eglDisplays().add(this);
static bool eglAtexitHandlerInitialized = false;
if (!eglAtexitHandlerInitialized) {
// EGL registers atexit handlers to cleanup its global display list.
// Since the global PlatformDisplay instance is created before,
// when the PlatformDisplay destructor is called, EGL has already removed the
// display from the list, causing eglTerminate() to crash. So, here we register
// our own atexit handler, after EGL has been initialized and after the global
// instance has been created to ensure we call eglTerminate() before the other
// EGL atexit handlers and the PlatformDisplay destructor.
// See https://bugs.webkit.org/show_bug.cgi?id=157973.
eglAtexitHandlerInitialized = true;
std::atexit([] {
while (!eglDisplays().isEmpty()) {
auto* display = eglDisplays().takeAny();
display->terminateEGLDisplay();
}
});
}
}
void PlatformDisplay::initializeEGLDisplay()
{
m_eglDisplayInitialized = true;
if (m_eglDisplay == EGL_NO_DISPLAY) {
// EGL is optionally soft linked on Windows.
#if PLATFORM(WIN)
auto eglGetDisplay = eglGetDisplayPtr();
if (!eglGetDisplay)
return;
#endif
m_eglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (m_eglDisplay == EGL_NO_DISPLAY)
return;
}
if (eglInitialize(m_eglDisplay, 0, 0) == EGL_FALSE) {
LOG_ERROR("EGLDisplay Initialization failed.");
terminateEGLDisplay();
return;
}
#if USE(OPENGL_ES_2)
static const EGLenum eglAPIVersion = EGL_OPENGL_ES_API;
#else
static const EGLenum eglAPIVersion = EGL_OPENGL_API;
#endif
if (eglBindAPI(eglAPIVersion) == EGL_FALSE) {
LOG_ERROR("Failed to set EGL API(%d).", eglGetError());
terminateEGLDisplay();
return;
}
// EGL registers atexit handlers to cleanup its global display list.
// Since the global PlatformDisplay instance is created before,
// when the PlatformDisplay destructor is called, EGL has already removed the
// display from the list, causing eglTerminate() to crash. So, here we register
// our own atexit handler, after EGL has been initialized and after the global
// instance has been created to ensure we call eglTerminate() before the other
// EGL atexit handlers and the PlatformDisplay destructor.
// See https://bugs.webkit.org/show_bug.cgi?id=157973.
std::atexit([] { PlatformDisplay::sharedDisplay().terminateEGLDisplay(); });
}
