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Stop crash on window snap by preventing torn device resources state (#1768)

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* Stop crash on window snap by preventing torn device resources state when quick on-the-fly resizing operations happen. #1572

(cherry picked from commit d8485079cd)
This commit is contained in:
Michael Niksa 2019-07-02 12:51:28 -07:00 committed by Dustin L. Howett (MSFT)
parent 0f3d25cea3
commit d624070755
1 changed files with 15 additions and 1 deletions
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16
src/renderer/dx/DxRenderer.cpp
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@ -690,10 +690,24 @@ void DxEngine::_InvalidOr(RECT rc) noexcept
else if (_displaySizePixels.cy != clientSize.cy ||
_displaySizePixels.cx != clientSize.cx)
{
// OK, we're going to play a dangerous game here for the sake of optimizing resize
// First, set up a complete clear of all device resources if something goes terribly wrong.
auto resetDeviceResourcesOnFailure = wil::scope_exit([&] {
_ReleaseDeviceResources();
});
// Now let go of a few of the device resources that get in the way of resizing buffers in the swap chain
_dxgiSurface.Reset();
_d2dRenderTarget.Reset();
_dxgiSwapChain->ResizeBuffers(2, clientSize.cx, clientSize.cy, DXGI_FORMAT_B8G8R8A8_UNORM, 0);
// Change the buffer size and recreate the render target (and surface)
RETURN_IF_FAILED(_dxgiSwapChain->ResizeBuffers(2, clientSize.cx, clientSize.cy, DXGI_FORMAT_B8G8R8A8_UNORM, 0));
RETURN_IF_FAILED(_PrepareRenderTarget());
// OK we made it past the parts that can cause errors. We can release our failure handler.
resetDeviceResourcesOnFailure.release();
// And persist the new size.
_displaySizePixels = clientSize;
}