抄了一个杂色
/// 3 out, 3 in...
vec3 hash33(vec3 p3)
{
p3 = fract(p3 * vec3(.1031, .1030, .0973));
p3 += dot(p3, p3.yxz+33.33);
return fract((p3.xxy + p3.yxx)*p3.zyx);
}
#define ITERATIONS 6
//----------------------------------------------------------------------------------------
void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
vec2 position = fragCoord.xy;
vec2 uv = fragCoord.xy / iResolution.xy;
vec3 a = vec3(0.0), b = a;
for (int t = 0; t < ITERATIONS; t++)
{
float v = float(t+1)*.132;
vec3 pos = vec3(position, .3) + 500. + 50.0;
a += hash33(pos);
}
// vec3 col = vec3(mix(b, a, 1.0));
vec3 xx = vec3(a.r);
fragColor = vec4(xx, 1.0);
}
image.png
