Axiom.Media.DDSCodec.UnpackDXTAlpha C# (CSharp) Method

        private void UnpackDXTAlpha( DXTExplicitAlphaBlock block, ColorEx[] pCol )
        {
			// Note - we assume all values have already been endian swapped
    		int colorIndex = 0;
			// This is an explicit alpha block, 4 bits per pixel, LSB first
			for (int row = 0; row < 4; ++row)
			{
				for (int x = 0; x < 4; ++x)
				{
					// Shift and mask off to 4 bits
					int val = (block.AlphaRow[row] >> (x * 4) & 0xF);
					// Convert to [0,1]
					pCol[colorIndex++].a = (Real)val / 0xF;
				}
			}
        }