Random Information

Just a random page containing random information to be used later. Don't read this page if you don't need random things.

uint wang_hash(uint seed)
{
               seed = (seed ^ 61) ^ (seed >> 16);
               seed *= 9;
               seed = seed ^ (seed >> 4);
               seed *= 0x27d4eb2d;
               seed = seed ^ (seed >> 15);
               return seed;
}
            
void wang_rnd_0(__global unsigned int * intSeeds,int id)                
{
               uint maxint=0;
               maxint--;
               uint rndint=wang_hash(id);
               intSeeds[id]=rndint;
}

float wang_rnd(__global unsigned int * intSeeds,int id)                
{
               uint maxint=0;
               maxint--;
               uint rndint=wang_hash(intSeeds[id]);
               intSeeds[id]=rndint;
               return ((float)rndint)/(float)maxint;
}


// initialize each thread's own random number seed
__kernel void rnd_0(__global unsigned int * intSeeds)
{
               int id=get_global_id(0);
               wang_rnd_0(intSeeds,id);     
}

// get a new random value by each thread
__kernel void rnd_1(__global unsigned int * intSeeds)
{
               int id=get_global_id(0);
               float randomFloat=wang_rnd(intSeeds,id);
}