Get image data for Direct3d rendering stream

Question

I would like to get at the raw image data, as in a pointed to a byte array or something like that, of the image output from a direct3d app without actually rendering it to the monitor.

I need to do this so that I can render direct3d as a directshow source filter

Visual studio 2008 c++

Answer 1

Use a render target?

Answer 2

Create a surface to which you're going to render as an instance of IDirect3DSurface9. Set it as the target for your rendering with IDirect3DDevice9::SetRenderTarget.

Answer 3

You can also lock the back buffer.