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Particularly: Is Marshal safer? Are pointers faster?
int pixel = Marshal.ReadInt32(bitmapData.Scan0, x * 4 + y * bitmapData.Stride);
int pixel = ((int*)bitmapData.Scan0)[x + y * bitmapData.Stride / 4];
There is no difference. If you look at the code from
Marshal.ReadInt32you will see it uses pointers to perform the same thing.The only ‘benefit’ with
Marshalis that you not have to explicitly allow unsafe code. IIRC, you also require FullTrust to run unsafe code, so that may be a consideration.