Resizing a DXGI Resource or Texture2D in SharpDX

Question

I want to resize a screen captured using the Desktop Duplication API in SharpDX. I am using the Screen Capture sample code from the SharpDX Samples repository, relevant port

Answer 1

Here is a pixelate example...

d2d_device_context_h()->BeginDraw();
d2d_device_context_h()->SetTarget(mp_ppBitmap1.Get());
D2D1_SIZE_F rtSize = mp_ppBitmap1->GetSize();
rtSize.height *= (1.0f / cbpx.iPixelsize.y);
rtSize.width *= (1.0f / cbpx.iPixelsize.x);
D2D1_RECT_F rtRect = { 0.0f, 0.0f, rtSize.width, rtSize.height };
D2D1_SIZE_F rsSize = mp_ppBitmap0->GetSize();
D2D1_RECT_F rsRect = { 0.0f, 0.0f, rsSize.width, rsSize.height };
d2d_device_context_h()->DrawBitmap(mp_ppBitmap0.Get(), &rtRect, 1.0f, 
D2D1_BITMAP_INTERPOLATION_MODE_LINEAR, &rsRect);
d2d_device_context_h()->SetTarget(mp_ppBitmap0.Get());
d2d_device_context_h()->DrawBitmap(mp_ppBitmap1.Get(), &rsRect, 1.0f, 
D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR, &rtRect);
d2d_device_context_h()->EndDraw();

Where iPixelsize.xy is the size of the "pixelated pixel", note that i just use linear interpolation when shrinking the bmp and NOT when i reenlarge. This will generate a pixelation effect.