gpu-xorshift-kernel.c

__kernel void xorshift(
    uint s1, // seed(base) 1
    uint s2, // seed(base) 2
    const int bufferSize,
    __global float2* rngBuffer)
{
    uint st;

    for(int i = 0; i < bufferSize; i++) {
        st = s1 ^ (s1 << 11);
        s1 = s2;
        s2 = s2 ^ (s2 >> 19) ^ ( st ^ (st >> 18));
        rngBuffer[i] = (float2)((float)st / UINT_MAX, (float)s1 / UINT_MAX);
    }
}