Interoperability Direct3D9 Direct3D11

Question

Interoperability Direct3D9 Direct3D11

Ceb 1

I currently have a program which displays a 4k Video by processing and rendering video data (using a DXGISwapChain) exclusively with Direct3D11. But I would like to do the "process part" with D3D11 and do the rendering with Direct3D9. So am I on the right track by caring about D3D9ExDXGISharedSurface? Is this article https://learn.microsoft.com/en-us/windows/win32/direct3darticles/surface-sharing-between-windows-graphics-apis really the solution of my problem ? And if it is, is it still supported on Windows modern API's? (since we can't find code samples about this anymore...)

If you have an other solution to my purpose, I'm very interested to hear it !

Xiaopo Yang - MSFT 12,736 Reputation points Microsoft External Staff

2021-07-28T01:15:10.767+00:00

Perhaps Surface sharing between Windows graphics APIs isn't the right track.
Process with D3D11 and Render with Direct3D9 as if there is no other graphics APIs.
Capucine Bois 1 Reputation point

2021-07-28T09:04:19.187+00:00

Im' not sure to understand well :/ This would imply to copy data from one surface to another ? So it would be CPU bound... The first solution would be to convert D3D11Texture2D into IDirect3DSurface9 and the second one would be directly working on the surfaces' data and pass the data between the two types of surfaces. Since I want D3D11 and D3D9 to work on the same data, I don't see others solutions ...
Xiaopo Yang - MSFT 12,736 Reputation points Microsoft External Staff

2021-07-29T05:48:00.643+00:00

You‘d better have a try. Hope the direct3d9ex sample is helpful.