How can I resize texture2d of SharpDX? I'm using SharpDX to Duplicate the screen and I use MediaFoundation to encode the texture into a video file. My problem is when I open an application into fullscreen and has a different resolution from system resolution I got a blank screen on my recording. Is there a better way I can resize the texture before encoding to mediafoundation without suffering performance? I'm using hardware accelerated. Thanks.
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It depends on how exactly you use Media Foundation, but you can use the Video Processor MFT explicitly. You need to add this MFT to the topology if you use IMFMediaSession/IMFTopology. Or initialize and process the samples with this MFT if you use Sink Writer. In this case you need to supply the DX manager to the MFT, using MFT_MESSAGE_SET_D3D_MANAGER.
This MFT is only available on Windows 8 and higher. So if you need to support an older Windows version you can use Video Resizer, but it is not hardware accelerated.
Another option to resize the texture would be to create a render target of the desired size and draw the texture to it. After that you need to feed that render target to the encoder.
