Question

i am trying to copy the pixels of a Bitmap into a DirectX texture. its simple to get the IntPtr’s from both, but how do i copy the pixel data efficiently?

   var data = FBitmap.LockBits(..)
   var rect = texture.LockRectangle(0, LockFlags.None);

   IntPtr from = data.Scan0;
   IntPtr to = rect.Data.DataPointer;

   //copy data  

   texture.UnlockRectangle(0);
   FBitmap.UnlockBits(data);

i tried to use Marshal.Copy but it need the pixels as an array and i would like to avoid another copy of course.

Answer 1

You could use the Windows API CopyMemory – Alias “RtlMoveMemory”. Much faster than all of that LockBits stuff…

http://www.pinvoke.net/default.aspx/urlmon/CopyMemory.html