How can I copy nvEncode input buffer to a Direct3d11 Texture?

Question

I am using nvencode api for video encoding. My capture card copies frames to pre allocated input buffers (NV_ENC_INPUT_PTR) using direct dma transfers (GpuDirect). the sequence looks like so:

nvEncodeApi->nvEncLockInputBuffer(_encoder, &lockInputBufferParams); // lock input buffer
DmaCopy(lockInputBufferParams.bufferDataPtr); // initiate dma transfer
nvEncodeApi->nvEncUnlockInputBuffer(_encoder, lockInputBufferParams.inputBuffer);

and later I initiate the encoding process.

This works fine, but in order to present the captured frame I need to copy it to a texture.

Is there a method to issue a copy form NV_ENC_INPUT_PTR inputBuffer to a Direct3d11 texture once it is unlocked?

Note: I know I can use Direct3D texture as an input buffer to nvencode and use Map/Unmap API. But my capture card can't seems to be able to perform DMA transfers directly to a mapped texture.

Answer 1

Cuda Map/Unmap API is interoperability between a Cuda Frame resource and a DirectX texture, for example. Everything resides inside the GPU.

So, I would say, do DmaCopy and then do Map/Unmap of the new resource to a directx texture.