Function bitReplicationScale

encoder/3rdparty/android_astc_decomp.cpp:269–279

}

inline deUint32 bitReplicationScale (deUint32 src, int numSrcBits, int numDstBits)
{
    DE_ASSERT(numSrcBits <= numDstBits);
    DE_ASSERT((src & ((1<<numSrcBits)-1)) == src);

    deUint32 dst = 0;
    for (int shift = numDstBits-numSrcBits; shift > -numSrcBits; shift -= numSrcBits)
        dst |= (shift >= 0) ? (src << shift) : (src >> -shift);

    return dst;
}

inline deInt32 signExtend (deInt32 src, int numSrcBits)
{