vanta.clouds2.min.js

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iResolution;\nuniform vec2 iMouse;\nuniform float iTime;\nuniform sampler2D iTex;\nuniform float speed;\nuniform vec3 skyColor;\nuniform vec3 cloudColor;\nuniform vec3 lightColor;\n\n# define T texture2D(iTex, fract((s*p.zw + ceil(s*p.x)) / 200.0)).y / (s += s) * 4.0\n\nvoid main(){\n    vec2 coord = gl_FragCoord.xy;\n    vec4 p, d = vec4(0.8, 0, coord / iResolution.y - 0.65);\n    vec3 out1 = skyColor - d.w; // sky gradient\n    float s, f, t = 200.0 + sin(dot(coord,coord));\n    const float MAX_ITER = 100.0;\n    for (float i = 1.0; i <= MAX_ITER; i += 1.0) {\n      t -= 2.0; if (t < 0.0) { break; } // march step\n      p = 0.05 * t * d;\n      p.xz += iTime * 0.50000 * speed; // movement through space\n      p.x += sin(iTime * 0.25 * speed) * 0.25;\n      s = 2.0;\n      f = p.w + 1.0-T-T-T-T;\n      // f = p.w + 1.0 - 0.25*noise(p.xyz * 2.0) - 0.25*noise(p.zxy * 2.01) - 0.25*noise(p.yzx * 2.03);\n      if (f < 0.0) {\n        vec3 cloudColorShading = mix(lightColor, cloudColor, -f);\n        out1 = mix(out1, cloudColorShading, -f * 0.4);\n      }\n    }\n    gl_FragColor = vec4(out1, 1.0);\n}"}])}));