RFR: 8313648: JavaFX application continues to show a black screen after graphic card driver crash

[Marius Hanl]

On Sat, 5 Aug 2023 12:28:16 GMT, Thorsten Fischer <duke at openjdk.org> wrote:

> Hi,
> 
> I did open the bug report. Some notes to this PR:
> 
> My colleagues and I are able to reproduce this bug regularly, even though it takes sometimes up to 3 or 4 weeks until the D3DERR_DEVICEHUNG error shows up. We are currently evaluating two versions of fixes, but until now we do not have any results. I will post them as soon as I got them.
> 
> Version 1 (this version): Based on the observation, that the TestCooperativeLevel/CheckDeviceState method returns D3D_OK again after about 20 - 60 seconds, the reinitialize is called after the first time the state is returning D3D_OK. The 'isHung' flag stores the information until then.
> 
> Version 2: calls reinitialize directly after D3DERR_DEVICEHUNG has been returned. Basically
> if (hr == D3DERR_DEVICEREMOVED || hr == D3DERR_DEVICEHUNG  ) { .. }
> 
> I did not modify the validatePresent method, as for our workaround (see ticket) it was not necessary. At least the native call swapchain->present dows not return that error code (https://learn.microsoft.com/en-us/windows/win32/api/d3d9/nf-d3d9-idirect3dswapchain9-present). I did not look decisively into all the native calls behind D3DRTTexture#readPixels.
> 
> As I said I will post the results (prism.verbose output) for the 2 versions later as a base for discussions.

As I also worked/checked this classes in https://github.com/openjdk/jfx/pull/1200, I now have a much better understanding of the code (and the communication with Direct3d9) and agree, this looks like the right thing to do in this situation.

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PR Comment: https://git.openjdk.org/jfx/pull/1199#issuecomment-1670054446