I am encoding a TYPE_INT_BGR image using BMP Writer with all the compression types supported. I have set the SourceSubsampling value to 3,3,0,0. When encoding with BI_RGB or BI_BITFIELDS compression types, some of the colors in the image are altered completely. This is incorrect. Setting subsampling should never alter the colors in the image.

This is reproducible only for BMP, only with the above compression types on all platforms. This is reproducible since Tiger.

I have attached a sample test and the image. I have also attached the screenshot of the output.
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