bayer-gen.c

#include <stdio.h>

#define MAG 3
#define SIZE (1 << MAG)
const int seed[2][2] = {{0, 2}, {3, 1}};

int main()
{
	int x, y;
	for (y = 0; y < SIZE; ++y, putchar('\n'))
		for (x = 0; x < SIZE; ++x) {
			int i, v = 0;
			for (i = 0; i < MAG; ++i)
				v = 4 * v + seed[(x >> i) & 1][(y >> i) & 1];
			printf("%2d ", v);
		}
	return 0;
}