blob: f534f3bddf396cfd6273e9929c2a168fe47bc781 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
void node_tex_checker(
vec3 co, vec4 color1, vec4 color2, float scale, out vec4 color, out float fac)
{
vec3 p = co * scale;
/* Prevent precision issues on unit coordinates. */
p = (p + 0.000001) * 0.999999;
int xi = int(abs(floor(p.x)));
int yi = int(abs(floor(p.y)));
int zi = int(abs(floor(p.z)));
bool check = ((mod(xi, 2) == mod(yi, 2)) == bool(mod(zi, 2)));
color = check ? color1 : color2;
fac = check ? 1.0 : 0.0;
}
|