| ␊ |
| ␉␉␉// Now we get to do a software-based flip! Yes, really! -flibit␊ |
| ␉␉␉int pitch = w * 4;␊ |
| ␉␉␉byte[] tempRow = new byte[pitch];␊ |
| ␉␉␉GCHandle handle = GCHandle.Alloc(tempRow, GCHandleType.Pinned);␊ |
| ␉␉␉IntPtr temp = handle.AddrOfPinnedObject();␊ |
| ␉␉␉IntPtr temp = Marshal.AllocHGlobal(pitch);␊ |
| ␉␉␉for (int row = 0; row < h / 2; row += 1)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉// Top to temp, bottom to top, temp to bottom␊ |
|
| ␉␉␉␉memcpy(data + (row * pitch), data + ((h - row - 1) * pitch), (IntPtr) pitch);␊ |
| ␉␉␉␉memcpy(data + ((h - row - 1) * pitch), temp, (IntPtr) pitch);␊ |
| ␉␉␉}␊ |
| ␉␉␉handle.Free();␊ |
| ␉␉␉Marshal.FreeHGlobal(temp);␊ |
| ␉␉}␊ |
| ␉␉[DllImport("msvcrt.dll", CallingConvention = CallingConvention.Cdecl)]␊ |
| ␉␉private static extern void memcpy(IntPtr dst, IntPtr src, IntPtr len);␊ |
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