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DDS decoder

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I'm using source code from Nvidia's Decompress_DXTC.cpp library (C:\Dev\devrel\Nv_sdk_4\Direct3D\Decompress_DXTC) to decode DDS files, but I think there's something wrong with it. It doesn't decode the alpha channel for DXT5. All I get back is 255 for all alpha values. DXT5 format does save alpha values, and I do see my alpha channel in DirectX's DxTex.exe program, so my texture data is correct. Is there something wrong with this DDS library when it comes to alpha channels?

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