leadedge / shadermaker Goto Github PK

void mainImage( out vec4 fragColor, in vec2 fragCoord )
{
        vec3 col = texture2D(iChannel0, fragCoord.xy / iResolution.xy);
        fragColor = vec4(col, 1.0);
}

float t (iGlobalTime * 0.25 + 10.0)

float hash(float n) { return fract(sin(n) * 1e4); }
float rand(vec2 n) {
	return fract(sin(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);
}

const int nbMeta = 30;
vec3 meta[nbMeta];
float map(in vec2 p)
{
	float d = 0.0;
	for (int i = 0; i<nbMeta; i++)
	{
		d += meta[i].z / (length(p - meta[i].xy));
	}
	return d;
}

vec3 normal(in vec2 p)
{
	vec2 eps = vec2(0.1, 0.0);
	vec3 n;
	n.x = map(p) - map(p + eps.xy);
	n.y = eps.x * 2.0;
	n.z = map(p) - map(p + eps.yx);

	n = normalize(n);
	return n;
}


vec3 bckground(in vec2 uv)
{
	vec3 c = texture(iChannel0, vec2(uv.y / uv.x, t * 0.2 + uv.y * 0.05)).rgb;
	return pow(c, vec3(2.2)) + pow(c * 1.3, vec3(10.2));
}

vec3 bckground2(in vec2 uv)
{
	vec3 c = texture(iChannel1, vec2(uv.y / uv.x, t * 0.2 + uv.y * 0.05)).rgb;
	return pow(c, vec3(2.2)) + pow(c *1.3, vec3(10.2));
}

void mainImage(out vec4 fragColor, in vec2 fragCoord)
{
	vec2 q = fragCoord.xy / iResolution.xy;
	vec2 uv = fragCoord.xy / iResolution.xy * 2.0 - 1.0;
	uv.x *= iResolution.x / iResolution.y;
	vec3 col = vec3(0.0);


	for (int i = 0; i<nbMeta; i++)
	{
		meta[i].x = cos(t*hash(float(i)) * 2.0) * hash(float(i) + 0.1) * 2.0;
		meta[i].y = sin(t*hash(float(i))) * hash(float(i) + 0.2);
		meta[i].z = abs(hash(float(i))) * 5.0 + 0.01;
	}


	float d = map(uv);
	vec3 n = normal(uv);

	vec2 p = uv + n.rb;
	p = mix(uv, p, clamp(pow(q.x*q.y*(1.0 - q.x) * (1.0 - q.y) * 20.0, 2.5), 0.0, 1.0));
	col.r = bckground(p + vec2(0.01, 0.0)).r;
	col.g = bckground(p + vec2(0.0, 0.01)).g;
	col.b = bckground(p + vec2(0.0, 0.01)).b;
	col = pow(col, vec3(1.0 / 2.2));

	col = mix(bckground2(uv + vec2(0.0, 0.2)).rgb, col, clamp(pow(q.x*q.y*(1.0 - q.x)*(1.0 - q.y) * 30.0, 2.5), 0.0, 1.0));
	//

	col *= 0.5 + 0.5 * pow(q.x*q.y * (1.0 - q.x) * (1.0 - q.y) * 50.0, 0.5);

	fragColor = vec4(col, 1.0);
}