D3D depth issue and D2D render flash after update device from Lumia Black to Lumia Denim

Question

Hi,
Yestoday I updated my lumia 929 device from Lumia Black to Lumia Denim. I develope game on this device.
My game is D2D and D3D Interop with silverlight 8.1 program. Then problem occured. The depth of 3D objects become wrong. And the d2d content will flash time to time. I use d2d to render text.
However, I solved the depth problem by setting up DepthStencilState. But the d2d content flash problem doesn't solved. 
Not only Lumia 929, but 930, 638 and many devices.
In lumia 525 and 520t, my game still works fine.
Can anyone help me ?
Any help will be appliciated, thank you.

Answer 1

Hello,
Can you provide more detail concerning how you are rendering your text with D2D? Are you doing the D2D update on the UI thread? I think we just need more detail before we can offer any suggestions.
Thanks,
James
Windows SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/
Hi, thank you for your reply.
What do you mean D2D update?I draw D2D content on the UI thread.
I render text like below
void YHMText::DrawCustom(wstring str, float scale, float posX, float posY, float layoutX, float layoutY, float opacity, float rotationAngle, int colorID)
mText = str;
if (mIsResourceLoaded && opacity > 0.0f)
mText = str;
DX::ThrowIfFailed(m_dwriteFactory->CreateTextLayout(mText.c_str(), (uint32) mText.length(), mTextFormat.Get(), layoutX / scale, layoutY / scale, &mTextLayout));
DWRITE_TEXT_RANGE range = { 0 };
range.length = static_cast<uint32>(mText.length());
DX::ThrowIfFailed(mTextLayout->SetFontCollection(mFontCollection.Get(), range));
#ifdef YHMWINRT
Windows::Foundation::Size logicalSize = mDeviceResources->GetLogicalSize();
#endif
#ifdef YHMSILVERLIGHT
Windows::Foundation::Size logicalSize = mDeviceResources->GetRenderTargetSize();
#endif
float dpiScale = 1.0f;
#if (NTDDI_VERSION == NTDDI_WIN8)
dpiScale = 96.0f / mDeviceResources->GetDPI();
#endif
D2D1::Matrix3x2F screenTranslation;
D2D1::Matrix3x2F screenScale;
D2D1::Matrix3x2F globelScale = D2D1::Matrix3x2F::Scale(scale, scale);
D2D1_POINT_2F center;
center.x = posX * logicalSize.Width / 1920.0f * dpiScale;
center.y = posY * logicalSize.Height / 1080.0f * dpiScale;
D2D1::Matrix3x2F rotation = D2D1::Matrix3x2F::Rotation(rotationAngle, center);
if (gScreenMode == YHMScreenMode::Portrait)
screenTranslation = D2D1::Matrix3x2F::Translation(posX * logicalSize.Width / 1080.0f * dpiScale, posY * logicalSize.Width / 1080.0f * dpiScale);
screenScale = D2D1::Matrix3x2F::Scale(logicalSize.Width / 1080.0f * dpiScale, logicalSize.Width / 1080.0f * dpiScale);
if (gScreenMode == YHMScreenMode::Landerscape)
screenTranslation = D2D1::Matrix3x2F::Translation(posX * logicalSize.Width / 1920.0f * dpiScale, posY * logicalSize.Height / 1080.0f * dpiScale);
screenScale = D2D1::Matrix3x2F::Scale(logicalSize.Width / 1920.0f * dpiScale, logicalSize.Height / 1080.0f * dpiScale);
m_d2dContext->SetTransform(screenScale * globelScale * screenTranslation * mDeviceResources->GetOrientationTransform2D() * rotation);
DX::ThrowIfFailed(mTextFormat->SetTextAlignment(mTextAlignment));
mDeviceResources->BeginDrawD2D();
mBrush[colorID]->SetOpacity(opacity);
m_d2dContext->DrawTextLayout(D2D1::Point2F(0.f, 0.f), mTextLayout.Get(), mBrush[colorID].Get(), D2D1_DRAW_TEXT_OPTIONS_NO_SNAP);
mBrush[colorID]->SetOpacity(1.0f);
mDeviceResources->EndDrawD2D();
This works fine with Lumia Black. But in Lumia Denim, my d2d text may flash.
I noticed that the flash problem usually occured when D3D content draw first. In my render methods, d3d content and d2d content are place together.