gistfile1.txt

  public void Paint(IntPtr srcBuffer, int srcRowSpan, AweRect srcRect, AweRect destRect)
        {
            var context = GraphicsManager.Current.Device.ImmediateContext;

            var dataBox = context.MapSubresource(TempTexture, 0, MapMode.Write, MapFlags.None);
            unsafe
            {
                var destPerDepthPtr = (byte*) dataBox.DataPointer;
                var sourcePtr = (byte*) srcBuffer;


                sourcePtr += srcRect.Y*srcRowSpan;

                var destPtr = destPerDepthPtr;
                // Iterate on each line
                for (int i = 0; i < srcRect.Height; i++)
                {
                    SharpDX.Utilities.CopyMemory((IntPtr) destPtr, (IntPtr) sourcePtr + srcRect.X * 4, srcRowSpan);
                    destPtr += dataBox.RowPitch;
                    sourcePtr += srcRowSpan;
                }
            }


            context.CopySubresourceRegion(TempTexture, 0,
                 new ResourceRegion(0, 0, 0,  srcRect.Width,  srcRect.Height, 1),
                 Texture, 0, destRect.X, destRect.Y, 0);

            context.UnmapSubresource(TempTexture, 0);
}