override redirect, obey ximage rgb masks, restore completion event

[retrobench] / src / util.c

#include "util.h"

int mask_to_shift(unsigned int mask)
{
        int s = 0;
        if(mask) {
                while(!(mask & 1)) {
                        mask >>= 1;
                        s++;
                }
        }
        return s;
}