I have been programming on DirectX12 since last year, and I've experienced DX10 and 11. There is something bizarre I found in my application DX12 and i am not able to find why or a solution. I cannot show my original code, but it's ok, because it happens in any simply DX12 sample.
We can use directly the Triangle Sample (provided by DirectX12 officials) for example. I integrate it without modifying anything basic in a MFC SDI application, and until now everything works fine. But after I change the Swap Chain format to DXGI_FORMAT_R16G16B16A16_FLOAT, the application produces flickers when other windows or apps are staying/moving on the top of it but without entirely covering it. You can find here the video I made (sorry for the quality) to show the flickering, and also here the visual c++ 2015 mfc sample.
I tried something like changing erasebackground method, but still can't find a solution... Is this a programming level problem? but in which level, MFC, DirectX12, or DXGI? Or is this a os or hardware level problem??
I have already give the whole project vc++, so i suppose I can jump the step of giving the "Minimal, Complete, and Verifiable example". I dont show the code, because I dont know which part of code may be the cause of the problem, and also I am not sure if it is coding problem. And I would like to mention that the problem arises only when I replace the DXGI_FORMAT_R8G8B8A8_UNORM by DXGI_FORMAT_R16G16B16A16_FLOAT. And by the way, the flickering does not happen with DirectX11 if i do the same "integration to MFC" thing.
PS. There is no error or warning when debugging in VC2015.
PS. the same thing happens when I integrate the sample (by making it dll) into an C# Winforms apps.