public UseOpenGLCreationContext(GraphicsDevice graphicsDevice)
: this()
{
#if SILICONSTUDIO_PLATFORM_ANDROID
// Unfortunately, android seems to not use GraphicsContext.CurrentContext to register its AndroidGraphicsContext,
// so let's query EGL directly.
if (GraphicsDevice.EglGetCurrentContext() == IntPtr.Zero)
#elif SILICONSTUDIO_PLATFORM_IOS
if (OpenGLES.EAGLContext.CurrentContext == null)
#else
if (GraphicsContext.CurrentContext == null)
#endif
{
needUnbindContext = true;
useDeviceCreationContext = true;
#if SILICONSTUDIO_PLATFORM_ANDROID
tegraWorkaround = graphicsDevice.Workaround_Context_Tegra2_Tegra3;
// Notify main rendering thread there is some pending async work to do
if (tegraWorkaround)
{
useDeviceCreationContext = false; // We actually use real main context, so states will be kept
graphicsDevice.AsyncPendingTaskWaiting = true;
}
#endif
// Lock, since there is only one deviceCreationContext.
// TODO: Support multiple deviceCreationContext (TLS creation of context was crashing, need to investigate why)
asyncCreationLockObject = graphicsDevice.asyncCreationLockObject;
Monitor.Enter(graphicsDevice.asyncCreationLockObject, ref asyncCreationLockTaken);
#if SILICONSTUDIO_PLATFORM_ANDROID
if (tegraWorkaround)
{
graphicsDevice.AsyncPendingTaskWaiting = false;
}
// On android, bind the actual android context
// The deviceCreationContext is a dummy one, so that CurrentContext works.
androidDeviceCreationContext = graphicsDevice.androidAsyncDeviceCreationContext;
if (androidDeviceCreationContext != null)
{
androidDeviceCreationContext.MakeCurrent(graphicsDevice.deviceCreationWindowInfo);
}
#endif
// Bind the context
deviceCreationContext = graphicsDevice.deviceCreationContext;
deviceCreationContext.MakeCurrent(graphicsDevice.deviceCreationWindowInfo);
}
}